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webkit / WebKit / 799edd534b8fe5cb7d2ac0319b8742ff4626b1dd / . / Source / WebCore / bindings / scripts / CodeGeneratorJS.pm
blob: 1f4f755c46078a908b4789ebf3ce7bb8aad8fbd0 [file] [log] [blame]
#
# Copyright (C) 2005, 2006, 2007, 2008 Nikolas Zimmermann <zimmermann@kde.org>
# Copyright (C) 2006 Anders Carlsson <andersca@mac.com>
# Copyright (C) 2006, 2007 Samuel Weinig <sam@webkit.org>
# Copyright (C) 2006 Alexey Proskuryakov <ap@webkit.org>
# Copyright (C) 2006-2019 Apple Inc. All rights reserved.
# Copyright (C) 2009 Cameron McCormack <cam@mcc.id.au>
# Copyright (C) Research In Motion Limited 2010. All rights reserved.
# Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
# Copyright (C) 2011 Patrick Gansterer <paroga@webkit.org>
# Copyright (C) 2012 Ericsson AB. All rights reserved.
# Copyright (C) 2007, 2008, 2009, 2012 Google Inc.
# Copyright (C) 2013 Samsung Electronics. All rights reserved.
# Copyright (C) 2015, 2016 Canon Inc. All rights reserved.
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Library General Public
# License as published by the Free Software Foundation; either
# version 2 of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Library General Public License for more details.
#
# You should have received a copy of the GNU Library General Public License
# along with this library; see the file COPYING.LIB. If not, write to
# the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
# Boston, MA 02110-1301, USA.
package CodeGeneratorJS;
use strict;
use constant FileNamePrefix => "JS";
use Carp qw<longmess>;
use Data::Dumper;
use Hasher;
my $codeGenerator;
my $writeDependencies;
my @headerContentHeader = ();
my @headerContent = ();
my %headerIncludes = ();
my %headerTrailingIncludes = ();
my @implContentHeader = ();
my @implContent = ();
my %implIncludes = ();
my @depsContent = ();
my $numCachedAttributes = 0;
my $beginAppleCopyrightForHeaderFiles = <<END;
// ------- Begin Apple Copyright -------
/*
* Copyright (C) 2008 Apple Inc. All rights reserved.
*
* Permission is granted by Apple to use this file to the extent
* necessary to relink with LGPL WebKit files.
*
* No license or rights are granted by Apple expressly or by
* implication, estoppel, or otherwise, to Apple patents and
* trademarks. For the sake of clarity, no license or rights are
* granted by Apple expressly or by implication, estoppel, or otherwise,
* under any Apple patents, copyrights and trademarks to underlying
* implementations of any application programming interfaces (APIs)
* or to any functionality that is invoked by calling any API.
*/
END
my $beginAppleCopyrightForSourceFiles = <<END;
// ------- Begin Apple Copyright -------
/*
* Copyright (C) 2008 Apple Inc. All rights reserved.
*
* No license or rights are granted by Apple expressly or by implication,
* estoppel, or otherwise, to Apple copyrights, patents, trademarks, trade
* secrets or other rights.
*/
END
my $endAppleCopyright = <<END;
// ------- End Apple Copyright -------
END
# Default .h template
my $headerTemplate = << "EOF";
/*
This file is part of the WebKit open source project.
This file has been generated by generate-bindings.pl. DO NOT MODIFY!
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
EOF
sub assert
{
my $message = shift;
my $mess = longmess();
print Dumper($mess);
die $message;
}
# Default constructor
sub new
{
my $object = shift;
my $reference = { };
$codeGenerator = shift;
$writeDependencies = shift;
bless($reference, $object);
return $reference;
}
sub GenerateEnumeration
{
my ($object, $enumeration) = @_;
my $className = GetEnumerationClassName($enumeration->type);
$object->GenerateEnumerationHeader($enumeration, $className);
$object->GenerateEnumerationImplementation($enumeration, $className);
}
sub GenerateDictionary
{
my ($object, $dictionary, $enumerations, $otherDictionaries) = @_;
my $className = GetDictionaryClassName($dictionary->type);
$object->GenerateDictionaryHeader($dictionary, $className, $enumerations, $otherDictionaries);
$object->GenerateDictionaryImplementation($dictionary, $className, $enumerations, $otherDictionaries);
}
sub GenerateCallbackFunction
{
my ($object, $callbackFunction, $enumerations, $dictionaries) = @_;
$object->GenerateCallbackFunctionHeader($callbackFunction, $enumerations, $dictionaries);
$object->GenerateCallbackFunctionImplementation($callbackFunction, $enumerations, $dictionaries);
}
sub GenerateInterface
{
my ($object, $interface, $defines, $enumerations, $dictionaries) = @_;
$codeGenerator->LinkOverloadedOperations($interface);
AddStringifierOperationIfNeeded($interface);
AddLegacyCallerOperationIfNeeded($interface);
if ($interface->isCallback) {
$object->GenerateCallbackInterfaceHeader($interface, $enumerations, $dictionaries);
$object->GenerateCallbackInterfaceImplementation($interface, $enumerations, $dictionaries);
} else {
$object->GenerateHeader($interface, $enumerations, $dictionaries);
$object->GenerateImplementation($interface, $enumerations, $dictionaries);
}
}
sub AddStringifierOperationIfNeeded
{
my $interface = shift;
foreach my $property (@{$interface->attributes}, @{$interface->operations}, @{$interface->anonymousOperations}) {
next unless $property->isStringifier;
if (ref($property) eq "IDLAttribute") {
assert("stringifier can only be used on attributes with type DOMString or USVString") unless $property->type->name eq "DOMString" || $property->type->name eq "USVString";
}
if (ref($property) eq "IDLOperation") {
assert("stringifier can only be used on operations with a return type of DOMString") unless $property->type->name eq "DOMString";
assert("stringifier can only be used on operations with zero arguments") unless scalar(@{$property->arguments}) == 0;
# Don't duplicate the operation if it was declared with the name 'toString'.
return if $property->name eq "toString";
}
my $stringifier = IDLOperation->new();
$stringifier->name("toString");
$stringifier->type(IDLParser::cloneType($property->type));
$stringifier->isStringifier(1);
IDLParser::copyExtendedAttributes($stringifier->extendedAttributes, $property->extendedAttributes);
if ($property->name && !$stringifier->extendedAttributes->{ImplementedAs}) {
$stringifier->extendedAttributes->{ImplementedAs} = $property->name;
}
# If the stringifier was declared as read-write attribute and had [CEReactions], we need to remove
# it from the operation, as the operation should act like attribute getter, which doesn't respect
# [CEReactions].
if (ref($property) eq "IDLAttribute" && !$property->isReadOnly && $stringifier->extendedAttributes->{CEReactions}) {
delete $stringifier->extendedAttributes->{CEReactions};
}
push(@{$interface->operations}, $stringifier);
return;
}
}
sub AddLegacyCallerOperationIfNeeded
{
my $interface = shift;
foreach my $operation (@{$interface->operations}, @{$interface->anonymousOperations}) {
my $isLegacyCaller = grep { $_ eq "legacycaller" } @{$operation->specials};
if ($isLegacyCaller) {
$interface->{LegacyCallers} = [] if !exists $interface->{LegacyCallers};
my $clonedOperation = IDLParser::cloneOperation($operation);
push(@{$interface->{LegacyCallers}}, $clonedOperation);
$clonedOperation->{overloads} = $interface->{LegacyCallers};
$clonedOperation->{overloadIndex} = @{$interface->{LegacyCallers}};
}
}
}
sub EventHandlerAttributeEventName
{
my $attribute = shift;
my $eventType = $attribute->extendedAttributes->{ImplementedAs} || $attribute->name;
# Remove the "on" prefix.
$eventType = substr($eventType, 2);
return "eventNames().${eventType}Event";
}
sub GetParentClassName
{
my $interface = shift;
return $interface->extendedAttributes->{JSLegacyParent} if $interface->extendedAttributes->{JSLegacyParent};
return "JSDOMObject" unless NeedsImplementationClass($interface);
return "JSDOMWrapper<" . GetImplClassName($interface) . ">" unless $interface->parentType;
return "JS" . $interface->parentType->name;
}
sub GetCallbackClassName
{
my $className = shift;
return "JS$className";
}
sub GetExportMacroForJSClass
{
my $interface = shift;
return $interface->extendedAttributes->{ExportMacro} . " " if $interface->extendedAttributes->{ExportMacro};
return "";
}
sub AddIncludesForImplementationTypeInImpl
{
my $implementationType = shift;
AddIncludesForImplementationType($implementationType, \%implIncludes);
}
sub AddIncludesForImplementationTypeInHeader
{
my $implementationType = shift;
AddIncludesForImplementationType($implementationType, \%headerIncludes);
}
sub AddIncludesForImplementationType
{
my ($implementationType, $includesRef) = @_;
$includesRef->{"${implementationType}.h"} = 1;
}
sub AddToImplIncludesForIDLType
{
my ($type, $conditional) = @_;
return AddToIncludesForIDLType($type, \%implIncludes, $conditional)
}
sub AddToIncludesForIDLType
{
my ($type, $includesRef, $conditional) = @_;
if ($type->isNullable) {
AddToIncludes("JSDOMConvertNullable.h", $includesRef, $conditional);
}
if ($type->extendedAttributes->{OverrideIDLType}) {
my $overrideTypeName = $type->extendedAttributes->{OverrideIDLType};
if ($overrideTypeName eq "IDLIDBKey") {
AddToIncludes("JSDOMConvertIndexedDB.h", $includesRef, $conditional);
return;
}
if ($overrideTypeName eq "IDLWebGLAny" || $overrideTypeName eq "IDLWebGLExtension") {
AddToIncludes("JSDOMConvertWebGL.h", $includesRef, $conditional);
return;
}
}
if ($type->name eq "any") {
AddToIncludes("JSDOMConvertAny.h", $includesRef, $conditional);
return;
}
if ($type->name eq "boolean") {
AddToIncludes("JSDOMConvertBoolean.h", $includesRef, $conditional);
return;
}
if ($codeGenerator->IsBufferSourceType($type)) {
AddToIncludes("JSDOMConvertBufferSource.h", $includesRef, $conditional);
return;
}
if ($codeGenerator->IsCallbackFunction($type) || $codeGenerator->IsCallbackInterface($type)) {
AddToIncludes("JS" . $type->name . ".h", $includesRef, $conditional);
AddToIncludes("JSDOMConvertCallbacks.h", $includesRef, $conditional);
return;
}
if ($type->name eq "Date") {
AddToIncludes("JSDOMConvertDate.h", $includesRef, $conditional);
return;
}
if ($codeGenerator->IsExternalDictionaryType($type)) {
AddToIncludes("JS" . $type->name . ".h", $includesRef, $conditional);
AddToIncludes("JSDOMConvertDictionary.h", $includesRef, $conditional);
return;
}
if ($codeGenerator->IsExternalEnumType($type)) {
AddToIncludes("JS" . $type->name . ".h", $includesRef, $conditional);
AddToIncludes("JSDOMConvertEnumeration.h", $includesRef, $conditional);
return;
}
if ($type->name eq "EventListener") {
AddToIncludes("JSEventListener.h", $includesRef, $conditional);
AddToIncludes("JSDOMConvertEventListener.h", $includesRef, $conditional);
return;
}
if ($codeGenerator->IsInterfaceType($type)) {
AddToIncludes("JS" . $type->name . ".h", $includesRef, $conditional);
AddToIncludes("JSDOMConvertInterface.h", $includesRef, $conditional);
return;
}
if ($type->name eq "JSON") {
AddToIncludes("JSDOMConvertJSON.h", $includesRef, $conditional);
return;
}
if ($codeGenerator->IsNumericType($type)) {
AddToIncludes("JSDOMConvertNumbers.h", $includesRef, $conditional);
return;
}
if ($type->name eq "object") {
AddToIncludes("JSDOMConvertObject.h", $includesRef, $conditional);
return;
}
if ($codeGenerator->IsPromiseType($type)) {
AddToIncludes("DOMPromiseProxy.h", $includesRef, $conditional);
AddToIncludes("JSDOMConvertPromise.h", $includesRef, $conditional);
AddToIncludesForIDLType(@{$type->subtypes}[0], $includesRef, $conditional);
return;
}
if ($codeGenerator->IsRecordType($type)) {
AddToIncludes("<wtf/Vector.h>", $includesRef, $conditional);
AddToIncludes("JSDOMConvertRecord.h", $includesRef, $conditional);
AddToIncludesForIDLType(@{$type->subtypes}[0], $includesRef, $conditional);
AddToIncludesForIDLType(@{$type->subtypes}[1], $includesRef, $conditional);
return;
}
if ($codeGenerator->IsSequenceOrFrozenArrayType($type)) {
AddToIncludes("<JavaScriptCore/JSArray.h>", $includesRef, $conditional);
AddToIncludes("JSDOMConvertSequences.h", $includesRef, $conditional);
AddToIncludesForIDLType(@{$type->subtypes}[0], $includesRef, $conditional);
return;
}
if ($type->name eq "ScheduledAction") {
AddToIncludes("JSDOMConvertScheduledAction.h", $includesRef, $conditional);
return;
}
if ($type->name eq "SerializedScriptValue") {
AddToIncludes("SerializedScriptValue.h", $includesRef, $conditional);
AddToIncludes("JSDOMConvertSerializedScriptValue.h", $includesRef, $conditional);
return;
}
if ($codeGenerator->IsStringType($type)) {
AddToIncludes("JSDOMConvertStrings.h", $includesRef, $conditional);
return;
}
if ($type->isUnion) {
AddToIncludes("<wtf/Variant.h>", $includesRef, $conditional);
AddToIncludes("JSDOMConvertUnion.h", $includesRef, $conditional);
foreach my $memberType (@{$type->subtypes}) {
AddToIncludesForIDLType($memberType, $includesRef, $conditional);
}
return;
}
if ($type->name eq "XPathNSResolver") {
AddToIncludes("JSXPathNSResolver.h", $includesRef, $conditional);
AddToIncludes("JSDOMConvertXPathNSResolver.h", $includesRef, $conditional);
return;
}
}
sub AddToImplIncludes
{
my ($header, $conditional) = @_;
AddToIncludes($header, \%implIncludes, $conditional);
}
sub AddToIncludes
{
my ($header, $includesRef, $conditional) = @_;
if (not $conditional) {
$includesRef->{$header} = 1;
} elsif (not exists($includesRef->{$header})) {
$includesRef->{$header} = $conditional;
} else {
my $oldValue = $includesRef->{$header};
$includesRef->{$header} = "$oldValue|$conditional" if $oldValue ne 1;
}
}
sub IsReadonly
{
my $attribute = shift;
return $attribute->isReadOnly && !$attribute->extendedAttributes->{Replaceable} && !$attribute->extendedAttributes->{PutForwards};
}
sub AddClassForwardIfNeeded
{
my $type = shift;
# SVGAnimatedLength/Number/etc. are not classes so they can't be forward declared as classes.
return if $codeGenerator->IsSVGAnimatedType($type);
return if $codeGenerator->IsBufferSourceType($type);
push(@headerContent, "class " . $type->name . ";\n\n");
}
sub GetGenerateIsReachable
{
my $interface = shift;
return $interface->extendedAttributes->{GenerateIsReachable};
}
sub GetCustomIsReachable
{
my $interface = shift;
return $interface->extendedAttributes->{CustomIsReachable};
}
sub IsDOMGlobalObject
{
my $interface = shift;
return $interface->type->name eq "DOMWindow" || $interface->type->name eq "RemoteDOMWindow" || $codeGenerator->InheritsInterface($interface, "WorkerGlobalScope") || $codeGenerator->InheritsInterface($interface, "WorkletGlobalScope") || $interface->type->name eq "TestGlobalObject";
}
sub ShouldUseGlobalObjectPrototype
{
my $interface = shift;
# For workers, the global object is a DedicatedWorkerGlobalScope.
return 0 if $interface->type->name eq "WorkerGlobalScope";
# For worklets, the global object is a PaintWorkletGlobalScope.
return 0 if $interface->type->name eq "WorkletGlobalScope";
return IsDOMGlobalObject($interface);
}
sub GenerateIndexedGetter
{
my ($interface, $indexedGetterOperation, $indexExpression) = @_;
# NOTE: This abstractly implements steps 1.2.1 - 1.2.8 of the LegacyPlatformObjectGetOwnProperty
# algorithm. Returing the conversion expression and attributes expression for use
# by the caller.
# 1.2.1 Let operation be the operation used to declare the indexed property getter.
# 1.2.2 Let value be an uninitialized variable.
# 1.2.3 If operation was defined without an identifier, then set value to the result
# of performing the steps listed in the interface description to determine the
# value of an indexed property with index as the index.
# 1.2.4 Otherwise, operation was defined with an identifier. Set value to the result
# of performing the steps listed in the description of operation with index as
# the only argument value.
# 1.2.5 Let desc be a newly created Property Descriptor with no fields.
# 1.2.6 Set desc.[[Value]] to the result of converting value to an ECMAScript value.
# 1.2.7 If O implements an interface with an indexed property setter, then set
# desc.[[Writable]] to true, otherwise set it to false.
# 1.2.8 Return desc.
my @attributes = ();
push(@attributes, "JSC::PropertyAttribute::ReadOnly") if !GetIndexedSetterOperation($interface) && !$interface->extendedAttributes->{Plugin};
my $attributeString = "static_cast<unsigned>(" . ((@attributes > 0) ? join(" | ", @attributes) : "0") . ")";
my $indexedGetterFunctionName = $indexedGetterOperation->extendedAttributes->{ImplementedAs} || $indexedGetterOperation->name || "item";
my $nativeToJSConversion = NativeToJSValueUsingPointers($indexedGetterOperation, $interface, "thisObject->wrapped().${indexedGetterFunctionName}(${indexExpression})", "*thisObject->globalObject()");
return ($nativeToJSConversion, $attributeString);
}
sub GenerateNamedGetter
{
my ($interface, $namedGetterOperation, $namedPropertyExpression) = @_;
# NOTE: This abstractly implements steps 2.1 - 2.10 of the LegacyPlatformObjectGetOwnProperty
# algorithm. Returing the conversion expression and attributes expression for use
# by the caller.
# 2.1 Let operation be the operation used to declare the named property getter.
# 2.2 Let value be an uninitialized variable.
# 2.3 If operation was defined without an identifier, then set value to the result
# of performing the steps listed in the interface description to determine the
# value of a named property with P as the name.
# 2.4 Otherwise, operation was defined with an identifier. Set value to the result
# of performing the steps listed in the description of operation with P as the
# only argument value..
# 2.5 Let desc be a newly created Property Descriptor with no fields.
# 2.6 Set desc.[[Value]] to the result of converting value to an ECMAScript value.
# 2.7 If O implements an interface with a named property setter, then set desc.[[Writable]]
# to true, otherwise set it to false.
# 2.8 If O implements an interface with the [LegacyUnenumerableNamedProperties]
# extended attribute, then set desc.[[Enumerable]] to false, otherwise set it
# to true.
# 2.9 Set desc.[[Configurable]] to true.
# 2.10 Return desc.
my @attributes = ();
push(@attributes, "JSC::PropertyAttribute::ReadOnly") if !GetNamedSetterOperation($interface) && !$interface->extendedAttributes->{Plugin};
push(@attributes, "JSC::PropertyAttribute::DontEnum") if $interface->extendedAttributes->{LegacyUnenumerableNamedProperties};
my $attributeString = "static_cast<unsigned>(" . ((@attributes > 0) ? join(" | ", @attributes) : "0") . ")";
my $nativeToJSConversion = NativeToJSValueUsingPointers($namedGetterOperation, $interface, $namedPropertyExpression, "*thisObject->globalObject()");
return ($nativeToJSConversion, $attributeString);
}
sub GenerateNamedGetterLambda
{
my ($outputArray, $interface, $namedGetterOperation, $namedGetterFunctionName, $IDLType) = @_;
# NOTE: Named getters are little odd. To avoid doing duplicate lookups (once when checking if
# the property name is a 'supported property name' and once to get the value) we signal
# that a property is supported by whether or not it is 'null' (where what null means is
# dependant on the IDL type). This is based on the assumption that no named getter will
# ever actually want to return null as an actual return value, which seems like an ok
# assumption to make (should it turn out this doesn't hold in the future, we have lots
# of options; do two lookups, add an extra layer of Optional, etc.).
my $resultType = "typename ${IDLType}::ImplementationType";
$resultType = "ExceptionOr<" . $resultType . ">" if $namedGetterOperation->extendedAttributes->{MayThrowException};
my $returnType = "Optional<" . $resultType . ">";
push(@$outputArray, " auto getterFunctor = [] (auto& thisObject, auto propertyName) -> ${returnType} {\n");
my @arguments = GenerateCallWithUsingReferences($namedGetterOperation->extendedAttributes->{CallWith}, $outputArray, "WTF::nullopt", "thisObject", " ");
push(@arguments, "propertyNameToAtomString(propertyName)");
push(@$outputArray, " auto result = thisObject.wrapped().${namedGetterFunctionName}(" . join(", ", @arguments) . ");\n");
if ($namedGetterOperation->extendedAttributes->{MayThrowException}) {
push(@$outputArray, " if (result.hasException())\n");
push(@$outputArray, " return ${resultType} { result.releaseException() };\n");
push(@$outputArray, " if (!${IDLType}::isNullValue(result.returnValue()))\n");
push(@$outputArray, " return ${resultType} { ${IDLType}::extractValueFromNullable(result.releaseReturnValue()) };\n");
push(@$outputArray, " return WTF::nullopt;\n");
} else {
push(@$outputArray, " if (!${IDLType}::isNullValue(result))\n");
push(@$outputArray, " return ${resultType} { ${IDLType}::extractValueFromNullable(result) };\n");
push(@$outputArray, " return WTF::nullopt;\n");
}
push(@$outputArray, " };\n");
}
# https://heycam.github.io/webidl/#legacy-platform-object-getownproperty
sub GenerateGetOwnPropertySlot
{
my ($outputArray, $interface, $className) = @_;
return if $interface->extendedAttributes->{CustomGetOwnPropertySlot};
push(@$outputArray, "bool ${className}::getOwnPropertySlot(JSObject* object, ExecState* state, PropertyName propertyName, PropertySlot& slot)\n");
push(@$outputArray, "{\n");
push(@$outputArray, " auto* thisObject = jsCast<${className}*>(object);\n");
push(@$outputArray, " ASSERT_GC_OBJECT_INHERITS(thisObject, info());\n");
my $namedGetterOperation = GetNamedGetterOperation($interface);
my $indexedGetterOperation = GetIndexedGetterOperation($interface);
if (($namedGetterOperation && $namedGetterOperation->extendedAttributes->{MayThrowException}) || ($indexedGetterOperation && $indexedGetterOperation->extendedAttributes->{MayThrowException})) {
push(@$outputArray, " auto throwScope = DECLARE_THROW_SCOPE(state->vm());\n");
}
# NOTE: The alogithm for [[GetOwnProperty]] contains only the following step:
# 1. Return LegacyPlatformObjectGetOwnProperty(O, P, false).
# Therefore, the following steps are from the LegacyPlatformObjectGetOwnProperty algorithm
# https://heycam.github.io/webidl/#LegacyPlatformObjectGetOwnProperty
# 1. If O supports indexed properties and P is an array index property name, then:
if ($indexedGetterOperation) {
# 1.1. Let index be the result of calling ToUint32(P).
push(@$outputArray, " if (auto index = parseIndex(propertyName)) {\n");
# 1.2. If index is a supported property index, then:
# FIXME: This should support non-contiguous indices.
push(@$outputArray, " if (index.value() < thisObject->wrapped().length()) {\n");
# NOTE: GenerateIndexedGetter implements steps 1.2.1 - 1.2.8.
my ($nativeToJSConversion, $attributeString) = GenerateIndexedGetter($interface, $indexedGetterOperation, "index.value()");
push(@$outputArray, " auto value = ${nativeToJSConversion};\n");
push(@$outputArray, " RETURN_IF_EXCEPTION(throwScope, false);\n") if $indexedGetterOperation->extendedAttributes->{MayThrowException};
push(@$outputArray, " slot.setValue(thisObject, ${attributeString}, value);\n");
push(@$outputArray, " return true;\n");
push(@$outputArray, " }\n");
# 1.3. Set ignoreNamedProps to true.
# NOTE: Setting ignoreNamedProps has the effect of skipping step 2, so we can early return here
# rather than going through the paces of having an actual ignoreNamedProps update.
if ($namedGetterOperation || $interface->extendedAttributes->{Plugin}) {
push(@$outputArray, " return JSObject::getOwnPropertySlot(object, state, propertyName, slot);\n");
}
push(@$outputArray, " }\n");
}
# 2. If O supports named properties, the result of running the named property visibility
# algorithm with property name P and object O is true, and ignoreNamedProps is false, then:
if ($namedGetterOperation) {
# NOTE: ignoreNamedProps is guarenteed to be false here, as it is initially false, and never set
# to true, due to the early return in step 1.3
AddToImplIncludes("JSDOMAbstractOperations.h");
my $namedGetterFunctionName = $namedGetterOperation->extendedAttributes->{ImplementedAs} || $namedGetterOperation->name || "namedItem";
my $IDLType = GetIDLTypeExcludingNullability($interface, $namedGetterOperation->type);
push(@$outputArray, " using GetterIDLType = ${IDLType};\n");
GenerateNamedGetterLambda($outputArray, $interface, $namedGetterOperation, $namedGetterFunctionName, "GetterIDLType");
my $overrideBuiltin = $codeGenerator->InheritsExtendedAttribute($interface, "OverrideBuiltins") ? "OverrideBuiltins::Yes" : "OverrideBuiltins::No";
push(@$outputArray, " if (auto namedProperty = accessVisibleNamedProperty<${overrideBuiltin}>(*state, *thisObject, propertyName, getterFunctor)) {\n");
# NOTE: GenerateNamedGetter implements steps 2.1 - 2.10.
my ($nativeToJSConversion, $attributeString) = GenerateNamedGetter($interface, $namedGetterOperation, "WTFMove(namedProperty.value())");
push(@$outputArray, " auto value = ${nativeToJSConversion};\n");
push(@$outputArray, " RETURN_IF_EXCEPTION(throwScope, false);\n") if $namedGetterOperation->extendedAttributes->{MayThrowException};
push(@$outputArray, " slot.setValue(thisObject, ${attributeString}, value);\n");
push(@$outputArray, " return true;\n");
push(@$outputArray, " }\n");
}
if ($interface->extendedAttributes->{Plugin}) {
AddToImplIncludes("JSPluginElementFunctions.h");
push(@$outputArray, " if (pluginElementCustomGetOwnPropertySlot(thisObject, state, propertyName, slot))\n");
push(@$outputArray, " return true;\n");
}
# 3. Return OrdinaryGetOwnProperty(O, P).
push(@$outputArray, " return JSObject::getOwnPropertySlot(object, state, propertyName, slot);\n");
push(@$outputArray, "}\n\n");
}
# https://heycam.github.io/webidl/#legacy-platform-object-getownproperty
sub GenerateGetOwnPropertySlotByIndex
{
my ($outputArray, $interface, $className) = @_;
return if $interface->extendedAttributes->{CustomGetOwnPropertySlot};
# Sink the int-to-string conversion that happens when we create a PropertyName
# to the point where we actually need it.
my $didGeneratePropertyName = 0;
my $propertyNameGeneration = sub {
return if $didGeneratePropertyName;
push(@$outputArray, " auto propertyName = Identifier::from(vm, index);\n");
$didGeneratePropertyName = 1;
};
my $namedGetterOperation = GetNamedGetterOperation($interface);
my $indexedGetterOperation = GetIndexedGetterOperation($interface);
push(@$outputArray, "bool ${className}::getOwnPropertySlotByIndex(JSObject* object, ExecState* state, unsigned index, PropertySlot& slot)\n");
push(@$outputArray, "{\n");
if ($namedGetterOperation || $interface->extendedAttributes->{Plugin} || ($indexedGetterOperation && $indexedGetterOperation->extendedAttributes->{MayThrowException})) {
push(@$outputArray, " VM& vm = state->vm();\n");
}
push(@$outputArray, " auto* thisObject = jsCast<${className}*>(object);\n");
push(@$outputArray, " ASSERT_GC_OBJECT_INHERITS(thisObject, info());\n");
if (($namedGetterOperation && $namedGetterOperation->extendedAttributes->{MayThrowException}) || ($indexedGetterOperation && $indexedGetterOperation->extendedAttributes->{MayThrowException})) {
push(@$outputArray, " auto throwScope = DECLARE_THROW_SCOPE(vm);\n");
}
# NOTE: The alogithm for [[GetOwnProperty]] contains only the following step:
# 1. Return LegacyPlatformObjectGetOwnProperty(O, P, false).
# Therefore, the following steps are from the LegacyPlatformObjectGetOwnProperty algorithm
# https://heycam.github.io/webidl/#LegacyPlatformObjectGetOwnProperty
# 1. If O supports indexed properties and P is an array index property name, then:
if ($indexedGetterOperation) {
# 1.1. Let index be the result of calling ToUint32(P).
push(@$outputArray, " if (LIKELY(index <= MAX_ARRAY_INDEX)) {\n");
# 1.2. If index is a supported property index, then:
# FIXME: This should support non-contiguous indices.
push(@$outputArray, " if (index < thisObject->wrapped().length()) {\n");
# NOTE: GenerateIndexedGetter implements steps 1.2.1 - 1.2.8.
my ($nativeToJSConversion, $attributeString) = GenerateIndexedGetter($interface, $indexedGetterOperation, "index");
push(@$outputArray, " auto value = ${nativeToJSConversion};\n");
push(@$outputArray, " RETURN_IF_EXCEPTION(throwScope, false);\n") if $indexedGetterOperation->extendedAttributes->{MayThrowException};
push(@$outputArray, " slot.setValue(thisObject, ${attributeString}, value);\n");
push(@$outputArray, " return true;\n");
push(@$outputArray, " }\n");
# 1.3. Set ignoreNamedProps to true.
# NOTE: Setting ignoreNamedProps has the effect of skipping step 2, so we can early return here
# rather than going through the paces of having an actual ignoreNamedProps update.
if ($namedGetterOperation || $interface->extendedAttributes->{Plugin}) {
push(@$outputArray, " return JSObject::getOwnPropertySlotByIndex(object, state, index, slot);\n");
}
push(@$outputArray, " }\n");
}
# 2. If O supports named properties, the result of running the named property visibility
# algorithm with property name P and object O is true, and ignoreNamedProps is false, then:
if ($namedGetterOperation) {
# NOTE: ignoreNamedProps is guarenteed to be false here, as it is initially false, and never set
# to true, due to the early return in step 1.3
AddToImplIncludes("JSDOMAbstractOperations.h");
&$propertyNameGeneration();
my $namedGetterFunctionName = $namedGetterOperation->extendedAttributes->{ImplementedAs} || $namedGetterOperation->name || "namedItem";
my $IDLType = GetIDLTypeExcludingNullability($interface, $namedGetterOperation->type);
push(@$outputArray, " using GetterIDLType = ${IDLType};\n");
GenerateNamedGetterLambda($outputArray, $interface, $namedGetterOperation, $namedGetterFunctionName, "GetterIDLType");
my $overrideBuiltin = $codeGenerator->InheritsExtendedAttribute($interface, "OverrideBuiltins") ? "OverrideBuiltins::Yes" : "OverrideBuiltins::No";
push(@$outputArray, " if (auto namedProperty = accessVisibleNamedProperty<${overrideBuiltin}>(*state, *thisObject, propertyName, getterFunctor)) {\n");
# NOTE: GenerateNamedGetter implements steps 2.1 - 2.10.
my ($nativeToJSConversion, $attributeString) = GenerateNamedGetter($interface, $namedGetterOperation, "WTFMove(namedProperty.value())");
push(@$outputArray, " auto value = ${nativeToJSConversion};\n");
push(@$outputArray, " RETURN_IF_EXCEPTION(throwScope, false);\n") if $namedGetterOperation->extendedAttributes->{MayThrowException};
push(@$outputArray, " slot.setValue(thisObject, ${attributeString}, value);\n");
push(@$outputArray, " return true;\n");
push(@$outputArray, " }\n");
}
if ($interface->extendedAttributes->{Plugin}) {
&$propertyNameGeneration();
AddToImplIncludes("JSPluginElementFunctions.h");
push(@$outputArray, " if (pluginElementCustomGetOwnPropertySlot(thisObject, state, propertyName, slot))\n");
push(@$outputArray, " return true;\n");
}
# 3. Return OrdinaryGetOwnProperty(O, P).
push(@$outputArray, " return JSObject::getOwnPropertySlotByIndex(object, state, index, slot);\n");
push(@$outputArray, "}\n\n");
}
# https://heycam.github.io/webidl/#legacy-platform-object-property-enumeration
sub GenerateGetOwnPropertyNames
{
my ($outputArray, $interface, $className) = @_;
return if $interface->extendedAttributes->{CustomGetOwnPropertyNames};
my $namedGetterOperation = GetNamedGetterOperation($interface);
my $indexedGetterOperation = GetIndexedGetterOperation($interface);
push(@$outputArray, "void ${className}::getOwnPropertyNames(JSObject* object, ExecState* state, PropertyNameArray& propertyNames, EnumerationMode mode)\n");
push(@$outputArray, "{\n");
if ($indexedGetterOperation || $namedGetterOperation) {
push(@$outputArray, " VM& vm = state->vm();\n");
}
push(@$outputArray, " auto* thisObject = jsCast<${className}*>(object);\n");
push(@$outputArray, " ASSERT_GC_OBJECT_INHERITS(object, info());\n");
# 1. If the object supports indexed properties, then the object’s supported
# property indices are enumerated first, in numerical order.
# FIXME: This should support non-contiguous indices.
if ($indexedGetterOperation) {
push(@$outputArray, " for (unsigned i = 0, count = thisObject->wrapped().length(); i < count; ++i)\n");
push(@$outputArray, " propertyNames.add(Identifier::from(vm, i));\n");
}
# 2. If the object supports named properties and doesn’t implement an interface
# with the [LegacyUnenumerableNamedProperties] extended attribute, then the
# object’s supported property names that are visible according to the named
# property visibility algorithm are enumerated next, in the order given in
# the definition of the set of supported property names.
if ($namedGetterOperation) {
if (!$interface->extendedAttributes->{LegacyUnenumerableNamedProperties}) {
push(@$outputArray, " for (auto& propertyName : thisObject->wrapped().supportedPropertyNames())\n");
push(@$outputArray, " propertyNames.add(Identifier::fromString(vm, propertyName));\n");
} else {
push(@$outputArray, " if (mode.includeDontEnumProperties()) {\n");
push(@$outputArray, " for (auto& propertyName : thisObject->wrapped().supportedPropertyNames())\n");
push(@$outputArray, " propertyNames.add(Identifier::fromString(vm, propertyName));\n");
push(@$outputArray, " }\n");
}
}
# 3. Finally, any enumerable own properties or properties from the object’s
# prototype chain are then enumerated, in no defined order.
push(@$outputArray, " JSObject::getOwnPropertyNames(object, state, propertyNames, mode);\n");
push(@$outputArray, "}\n\n");
}
# https://heycam.github.io/webidl/#invoke-indexed-setter
sub GenerateInvokeIndexedPropertySetter
{
my ($outputArray, $indent, $interface, $indexedSetterOperation, $indexExpression, $value) = @_;
# The second argument of the indexed setter operation is the argument being converted.
my $argument = @{$indexedSetterOperation->arguments}[1];
my $nativeValue = JSValueToNative($interface, $argument, $value, $indexedSetterOperation->extendedAttributes->{Conditional}, "state", "*state", "thisObject", "", "");
push(@$outputArray, $indent . "auto throwScope = DECLARE_THROW_SCOPE(state->vm());\n");
push(@$outputArray, $indent . "auto nativeValue = ${nativeValue};\n");
push(@$outputArray, $indent . "RETURN_IF_EXCEPTION(throwScope, true);\n");
my $indexedSetterFunctionName = $indexedSetterOperation->name || "setItem";
my $nativeValuePassExpression = PassArgumentExpression("nativeValue", $argument);
my $functionString = "thisObject->wrapped().${indexedSetterFunctionName}(${indexExpression}, ${nativeValuePassExpression})";
$functionString = "propagateException(*state, throwScope, ${functionString})" if NeedsExplicitPropagateExceptionCall($indexedSetterOperation);
push(@$outputArray, $indent . $functionString . ";\n");
}
# https://heycam.github.io/webidl/#invoke-named-setter
sub GenerateInvokeNamedPropertySetter
{
my ($outputArray, $indent, $interface, $namedSetterOperation, $value) = @_;
my $argument = @{$namedSetterOperation->arguments}[1];
my $nativeValue = JSValueToNative($interface, $argument, $value, $namedSetterOperation->extendedAttributes->{Conditional}, "state", "*state", "thisObject", "", "");
push(@$outputArray, $indent . "auto throwScope = DECLARE_THROW_SCOPE(state->vm());\n");
push(@$outputArray, $indent . "auto nativeValue = ${nativeValue};\n");
push(@$outputArray, $indent . "RETURN_IF_EXCEPTION(throwScope, true);\n");
push(@$outputArray, $indent . "bool isPropertySupported = true;\n") if $namedSetterOperation->extendedAttributes->{CallNamedSetterOnlyForSupportedProperties};
my $namedSetterFunctionName = $namedSetterOperation->name || "setNamedItem";
my $nativeValuePassExpression = PassArgumentExpression("nativeValue", $argument);
my @arguments = ();
push(@arguments, "propertyNameToString(propertyName)");
push(@arguments, $nativeValuePassExpression);
push(@arguments, "isPropertySupported") if $namedSetterOperation->extendedAttributes->{CallNamedSetterOnlyForSupportedProperties};
my $functionString = "thisObject->wrapped().${namedSetterFunctionName}(" . join(", ", @arguments) . ")";
$functionString = "propagateException(*state, throwScope, ${functionString})" if NeedsExplicitPropagateExceptionCall($namedSetterOperation);
push(@$outputArray, $indent . $functionString . ";\n");
}
sub GeneratePut
{
my ($outputArray, $interface, $className) = @_;
return if $interface->extendedAttributes->{CustomPut};
my $namedSetterOperation = GetNamedSetterOperation($interface);
my $indexedSetterOperation = GetIndexedSetterOperation($interface);
push(@$outputArray, "bool ${className}::put(JSCell* cell, ExecState* state, PropertyName propertyName, JSValue value, PutPropertySlot& putPropertySlot)\n");
push(@$outputArray, "{\n");
push(@$outputArray, " auto* thisObject = jsCast<${className}*>(cell);\n");
push(@$outputArray, " ASSERT_GC_OBJECT_INHERITS(thisObject, info());\n\n");
assert("CEReactions is not supported on having both named setters and indexed setters") if $namedSetterOperation && $namedSetterOperation->extendedAttributes->{CEReactions}
&& $indexedSetterOperation && $indexedSetterOperation->extendedAttributes->{CEReactions};
if ($namedSetterOperation) {
GenerateCustomElementReactionsStackIfNeeded($outputArray, $namedSetterOperation, "*state");
}
if ($indexedSetterOperation) {
GenerateCustomElementReactionsStackIfNeeded($outputArray, $indexedSetterOperation, "*state");
}
if ($indexedSetterOperation) {
push(@$outputArray, " if (auto index = parseIndex(propertyName)) {\n");
GenerateInvokeIndexedPropertySetter($outputArray, " ", $interface, $indexedSetterOperation, "index.value()", "value");
push(@$outputArray, " return true;\n");
push(@$outputArray, " }\n\n");
}
if ($namedSetterOperation) {
# FIMXE: We need a more comprehensive story for Symbols.
push(@$outputArray, " if (!propertyName.isSymbol()) {\n");
my $additionalIndent = "";
my $overrideBuiltins = $codeGenerator->InheritsExtendedAttribute($interface, "OverrideBuiltins");
if (!$overrideBuiltins) {
push(@$outputArray, " PropertySlot slot { thisObject, PropertySlot::InternalMethodType::VMInquiry };\n");
push(@$outputArray, " JSValue prototype = thisObject->getPrototypeDirect(state->vm());\n");
push(@$outputArray, " if (!(prototype.isObject() && asObject(prototype)->getPropertySlot(state, propertyName, slot))) {\n");
$additionalIndent .= " ";
}
GenerateInvokeNamedPropertySetter($outputArray, $additionalIndent . " ", $interface, $namedSetterOperation, "value");
if ($namedSetterOperation->extendedAttributes->{CallNamedSetterOnlyForSupportedProperties}) {
push(@$outputArray, $additionalIndent . " if (!isPropertySupported)\n");
push(@$outputArray, $additionalIndent . " return JSObject::put(thisObject, state, propertyName, value, putPropertySlot);\n");
}
push(@$outputArray, $additionalIndent . " return true;\n");
if (!$overrideBuiltins) {
push(@$outputArray, " }\n");
}
push(@$outputArray, " }\n\n");
}
assert("Using both a named property setter and [Plugin] together is not supported.") if $namedSetterOperation && $interface->extendedAttributes->{Plugin};
if ($interface->extendedAttributes->{Plugin}) {
AddToImplIncludes("JSPluginElementFunctions.h");
push(@$outputArray, " bool putResult = false;\n");
push(@$outputArray, " if (pluginElementCustomPut(thisObject, state, propertyName, value, putPropertySlot, putResult))\n");
push(@$outputArray, " return putResult;\n\n");
}
push(@$outputArray, " return JSObject::put(thisObject, state, propertyName, value, putPropertySlot);\n");
push(@$outputArray, "}\n\n");
}
sub GeneratePutByIndex
{
my ($outputArray, $interface, $className) = @_;
return if $interface->extendedAttributes->{CustomPut};
my $namedSetterOperation = GetNamedSetterOperation($interface);
my $indexedSetterOperation = GetIndexedSetterOperation($interface);
my $overrideBuiltins = $codeGenerator->InheritsExtendedAttribute($interface, "OverrideBuiltins");
my $ellidesCallsToBase = ($namedSetterOperation && $overrideBuiltins) && !$interface->extendedAttributes->{Plugin} && !$namedSetterOperation->extendedAttributes->{CallNamedSetterOnlyForSupportedProperties};
push(@$outputArray, "bool ${className}::putByIndex(JSCell* cell, ExecState* state, unsigned index, JSValue value, bool" . (!$ellidesCallsToBase ? " shouldThrow" : "") . ")\n");
push(@$outputArray, "{\n");
if ($namedSetterOperation || $interface->extendedAttributes->{Plugin}) {
push(@$outputArray, " VM& vm = state->vm();\n");
}
push(@$outputArray, " auto* thisObject = jsCast<${className}*>(cell);\n");
push(@$outputArray, " ASSERT_GC_OBJECT_INHERITS(thisObject, info());\n\n");
assert("CEReactions is not supported on having both named setters and indexed setters") if $namedSetterOperation && $namedSetterOperation->extendedAttributes->{CEReactions}
&& $indexedSetterOperation && $indexedSetterOperation->extendedAttributes->{CEReactions};
if ($namedSetterOperation) {
GenerateCustomElementReactionsStackIfNeeded($outputArray, $namedSetterOperation, "*state");
}
if ($indexedSetterOperation) {
GenerateCustomElementReactionsStackIfNeeded($outputArray, $indexedSetterOperation, "*state");
}
if ($indexedSetterOperation) {
push(@$outputArray, " if (LIKELY(index <= MAX_ARRAY_INDEX)) {\n");
GenerateInvokeIndexedPropertySetter($outputArray, " ", $interface, $indexedSetterOperation, "index", "value");
push(@$outputArray, " return true;\n");
push(@$outputArray, " }\n\n");
}
if ($namedSetterOperation) {
push(@$outputArray, " auto propertyName = Identifier::from(vm, index);\n");
my $additionalIndent = "";
if (!$overrideBuiltins) {
push(@$outputArray, " PropertySlot slot { thisObject, PropertySlot::InternalMethodType::VMInquiry };\n");
push(@$outputArray, " JSValue prototype = thisObject->getPrototypeDirect(vm);\n");
push(@$outputArray, " if (!(prototype.isObject() && asObject(prototype)->getPropertySlot(state, propertyName, slot))) {\n");
$additionalIndent .= " ";
}
GenerateInvokeNamedPropertySetter($outputArray, $additionalIndent . " ", $interface, $namedSetterOperation, "value");
if ($namedSetterOperation->extendedAttributes->{CallNamedSetterOnlyForSupportedProperties}) {
push(@$outputArray, $additionalIndent . " if (!isPropertySupported)\n");
push(@$outputArray, $additionalIndent . " return JSObject::putByIndex(cell, state, index, value, shouldThrow);\n");
}
push(@$outputArray, $additionalIndent . " return true;\n");
if (!$overrideBuiltins) {
push(@$outputArray, " }\n\n");
}
}
assert("Using both a named property setter and [Plugin] together is not supported.") if $namedSetterOperation && $interface->extendedAttributes->{Plugin};
if ($interface->extendedAttributes->{Plugin}) {
AddToImplIncludes("JSPluginElementFunctions.h");
push(@$outputArray, " auto propertyName = Identifier::from(vm, index);\n");
push(@$outputArray, " PutPropertySlot putPropertySlot(thisObject, shouldThrow);\n");
push(@$outputArray, " bool putResult = false;\n");
push(@$outputArray, " if (pluginElementCustomPut(thisObject, state, propertyName, value, putPropertySlot, putResult))\n");
push(@$outputArray, " return putResult;\n\n");
}
if (!$ellidesCallsToBase) {
push(@$outputArray, " return JSObject::putByIndex(cell, state, index, value, shouldThrow);\n");
}
push(@$outputArray, "}\n\n");
}
sub GenerateIsUnforgeablePropertyName
{
my ($outputArray, $interface) = @_;
my @unforgeablePropertyNames = ();
foreach my $property (@{$interface->attributes}, @{$interface->operations}) {
next if $property->isStatic;
if (IsUnforgeable($interface, $property)) {
push(@unforgeablePropertyNames, $property->name);
}
}
return 0 if (scalar(@unforgeablePropertyNames) == 0);
my $condition = join(" || ", map { "propertyName == \"" . $_ . "\"" } @unforgeablePropertyNames);
push(@$outputArray, "static bool isUnforgeablePropertyName(PropertyName propertyName)\n");
push(@$outputArray, "{\n");
push(@$outputArray, " return ${condition};\n");
push(@$outputArray, "}\n\n");
return 1;
}
# https://heycam.github.io/webidl/#legacy-platform-object-defineownproperty
sub GenerateDefineOwnProperty
{
my ($outputArray, $interface, $className) = @_;
return if $interface->extendedAttributes->{CustomDefineOwnProperty};
my $namedSetterOperation = GetNamedSetterOperation($interface);
my $indexedSetterOperation = GetIndexedSetterOperation($interface);
return if !$namedSetterOperation && !$indexedSetterOperation;
push(@$outputArray, "bool ${className}::defineOwnProperty(JSObject* object, ExecState* state, PropertyName propertyName, const PropertyDescriptor& propertyDescriptor, bool shouldThrow)\n");
push(@$outputArray, "{\n");
push(@$outputArray, " auto* thisObject = jsCast<${className}*>(object);\n");
push(@$outputArray, " ASSERT_GC_OBJECT_INHERITS(thisObject, info());\n\n");
assert("CEReactions is not supported on having both named setters and indexed setters") if $namedSetterOperation && $namedSetterOperation->extendedAttributes->{CEReactions}
&& $indexedSetterOperation && $indexedSetterOperation->extendedAttributes->{CEReactions};
if ($namedSetterOperation) {
GenerateCustomElementReactionsStackIfNeeded($outputArray, $namedSetterOperation, "*state");
}
if ($indexedSetterOperation) {
GenerateCustomElementReactionsStackIfNeeded($outputArray, $indexedSetterOperation, "*state");
}
# 1. If O supports indexed properties and P is an array index property name, then:
if (GetIndexedGetterOperation($interface)) {
# NOTE: The numbers are out of order because there is no reason doing steps 1, 3, and 4 if there
# is no indexed property setter.
if (!$indexedSetterOperation) {
# 2. If O does not implement an interface with an indexed property setter, then return false.
push(@$outputArray, " if (parseIndex(propertyName))\n");
push(@$outputArray, " return false;\n\n");
} else {
push(@$outputArray, " if (auto index = parseIndex(propertyName)) {\n");
# 1. If the result of calling IsDataDescriptor(Desc) is false, then return false.
push(@$outputArray, " if (!propertyDescriptor.isDataDescriptor())\n");
push(@$outputArray, " return false;\n");
# 3. Invoke the indexed property setter with P and Desc.[[Value]].
GenerateInvokeIndexedPropertySetter($outputArray, " ", $interface, $indexedSetterOperation, "index.value()", "propertyDescriptor.value()");
# 4. Return true.
push(@$outputArray, " return true;\n");
push(@$outputArray, " }\n\n");
}
}
# 2. If O supports named properties, O does not implement an interface with the [Global] or [PrimaryGlobal]
# extended attribute and P is not an unforgeable property name of O, then:
if (GetNamedGetterOperation($interface) && !IsGlobalOrPrimaryGlobalInterface($interface)) {
# FIMXE: We need a more comprehensive story for Symbols.
push(@$outputArray, " if (!propertyName.isSymbol()) {\n");
my $additionalIndent = "";
my $hasUnforgableProperties = GenerateIsUnforgeablePropertyName($outputArray, $interface);
if ($hasUnforgableProperties) {
push(@$outputArray, " if (!isUnforgeablePropertyName(propertyName)) {\n");
$additionalIndent .= " ";
}
# 1. Let creating be true if P is not a supported property name, and false otherwise.
# NOTE: This step is strength reduced into the only use of 'creating' in step 2.2.1
# 2. If O implements an interface with the [OverrideBuiltins] extended attribute or O
# does not have an own property named P, then:
my $overrideBuiltins = $codeGenerator->InheritsExtendedAttribute($interface, "OverrideBuiltins");
if (!$overrideBuiltins) {
# FIXME: Is JSObject::getOwnPropertySlot the right function to call? Is there a function that will
# only look at the actual properties, and not call into our implementation of the
# [[GetOwnProperty]] hook?
push(@$outputArray, $additionalIndent. " PropertySlot slot { thisObject, PropertySlot::InternalMethodType::VMInquiry };\n");
push(@$outputArray, $additionalIndent. " if (!JSObject::getOwnPropertySlot(thisObject, state, propertyName, slot)) {\n");
$additionalIndent .= " ";
}
if (!$namedSetterOperation) {
# 2.1. If creating is false and O does not implement an interface with a named property setter, then return false.
push(@$outputArray, $additionalIndent . " if (thisObject->wrapped().isSupportedPropertyName(propertyNameToString(propertyName)))\n");
push(@$outputArray, $additionalIndent . " return false;\n");
} else {
# 2.2. If O implements an interface with a named property setter, then:
# 2.2.1. If the result of calling IsDataDescriptor(Desc) is false, then return false.
push(@$outputArray, $additionalIndent . " if (!propertyDescriptor.isDataDescriptor())\n");
push(@$outputArray, $additionalIndent . " return false;\n");
# 2.2.2. Invoke the named property setter with P and Desc.[[Value]].
GenerateInvokeNamedPropertySetter($outputArray, $additionalIndent . " ", $interface, $namedSetterOperation, "propertyDescriptor.value()");
if ($namedSetterOperation->extendedAttributes->{CallNamedSetterOnlyForSupportedProperties}) {
push(@$outputArray, $additionalIndent . " if (!isPropertySupported)\n");
push(@$outputArray, $additionalIndent . " return JSObject::defineOwnProperty(object, state, propertyName, propertyDescriptor, shouldThrow);\n");
}
# 2.2.3. Return true.
push(@$outputArray, $additionalIndent . " return true;\n");
}
if (!$overrideBuiltins) {
push(@$outputArray, $additionalIndent . " }\n");
}
if ($hasUnforgableProperties) {
push(@$outputArray, " }\n");
}
# Close the !propertyName.isSymbol() condition.
push(@$outputArray, " }\n\n");
}
push(@$outputArray, " PropertyDescriptor newPropertyDescriptor = propertyDescriptor;\n");
# 3. If O does not implement an interface with the [Global] or [PrimaryGlobal] extended attribute,
# then set Desc.[[Configurable]] to true.
if (!IsGlobalOrPrimaryGlobalInterface($interface)) {
push(@$outputArray, " newPropertyDescriptor.setConfigurable(true);\n");
}
# 4. Return OrdinaryDefineOwnProperty(O, P, Desc).
# FIXME: Does this do the same thing?
push(@$outputArray, " return JSObject::defineOwnProperty(object, state, propertyName, newPropertyDescriptor, shouldThrow);\n");
push(@$outputArray, "}\n\n");
}
sub GenerateDeletePropertyCommon
{
my ($outputArray, $interface, $className, $operation, $conditional) = @_;
# This implements step 2 of https://heycam.github.io/webidl/#legacy-platform-object-delete
# so it can be shared between the generation of deleteProperty and deletePropertyByIndex.
# 2. If O supports named properties, O does not implement an interface with the
# [Global] or [PrimaryGlobal] extended attribute and the result of calling the
# named property visibility algorithm with property name P and object O is true,
# then:
assert("Named property deleters are not allowed without a corresponding named property getter.") if !GetNamedGetterOperation($interface);
assert("Named property deleters are not allowed on global object interfaces.") if IsGlobalOrPrimaryGlobalInterface($interface);
AddToImplIncludes("JSDOMAbstractOperations.h", $conditional);
my $overrideBuiltin = $codeGenerator->InheritsExtendedAttribute($interface, "OverrideBuiltins") ? "OverrideBuiltins::Yes" : "OverrideBuiltins::No";
push(@$outputArray, " if (isVisibleNamedProperty<${overrideBuiltin}>(*state, thisObject, propertyName)) {\n");
GenerateCustomElementReactionsStackIfNeeded($outputArray, $operation, "*state");
# 2.1. If O does not implement an interface with a named property deleter, then return false.
# 2.2. Let operation be the operation used to declare the named property deleter.
# NOTE: We only add a deleteProperty implementation of we have a named property deleter.
# 2.3. If operation was defined without an identifier, then:
# 1. Perform the steps listed in the interface description to delete an existing named
# property with P as the name.
# 2. If the steps indicated that the deletion failed, then return false.
# 2.4. Otherwise, operation was defined with an identifier:
# 1. Perform the steps listed in the description of operation with P as the only argument
# value.
# 2. If operation was declared with a return type of boolean and the steps returned false,
# then return false.
my $functionImplementationName = $operation->extendedAttributes->{ImplementedAs} || $codeGenerator->WK_lcfirst($operation->name) || "deleteNamedProperty";
my $functionCall = "impl." . $functionImplementationName . "(propertyNameToString(propertyName))";
# NOTE: We expect the implementation function of named deleters without an identifier to
# return either bool or ExceptionOr<bool>. the implementation function of named deleters
# with an identifier have no restriction, but if the return value of the operation is
# boolean, we return that value, otherwise it is ignored (as per section 4.2).
if ($operation->extendedAttributes->{MayThrowException}) {
push(@$outputArray, " auto result = ${functionCall};\n");
push(@$outputArray, " if (result.hasException()) {\n");
push(@$outputArray, " auto throwScope = DECLARE_THROW_SCOPE(state->vm());\n");
push(@$outputArray, " propagateException(*state, throwScope, result.releaseException());\n");
push(@$outputArray, " return true;\n");
push(@$outputArray, " }\n\n");
if (!$operation->name || $operation->name && $operation->type->name eq "boolean") {
push(@$outputArray, " return result.releaseReturnValue();\n");
} else {
push(@$outputArray, " return true;\n");
}
} else {
if (!$operation->name || $operation->name && $operation->type->name eq "boolean") {
push(@$outputArray, " return ${functionCall};\n");
} else {
push(@$outputArray, " ${functionCall};\n");
push(@$outputArray, " return true;\n");
}
}
push(@$outputArray, " }\n");
}
sub GenerateDeleteProperty
{
my ($outputArray, $interface, $className, $operation, $conditional) = @_;
# This implements https://heycam.github.io/webidl/#legacy-platform-object-delete for the
# for the deleteProperty override hook.
push(@$outputArray, "bool ${className}::deleteProperty(JSCell* cell, ExecState* state, PropertyName propertyName)\n");
push(@$outputArray, "{\n");
push(@$outputArray, " auto& thisObject = *jsCast<${className}*>(cell);\n");
push(@$outputArray, " auto& impl = thisObject.wrapped();\n");
# 1. If O supports indexed properties and P is an array index property name, then:
# 1. Let index be the result of calling ToUint32(P).
# 2. If index is not a supported property index, then return true.
# 3. Return false.
if (GetIndexedGetterOperation($interface)) {
push(@$outputArray, " if (auto index = parseIndex(propertyName))\n");
push(@$outputArray, " return !impl.isSupportedPropertyIndex(index.value());\n");
}
# GenerateDeletePropertyCommon implements step 2.
GenerateDeletePropertyCommon($outputArray, $interface, $className, $operation, $conditional);
# FIXME: Instead of calling down JSObject::deleteProperty, perhaps we should implement
# the remained of the algorithm ourselves.
push(@$outputArray, " return JSObject::deleteProperty(cell, state, propertyName);\n");
push(@$outputArray, "}\n\n");
}
sub GenerateDeletePropertyByIndex
{
my ($outputArray, $interface, $className, $operation, $conditional) = @_;
# This implements https://heycam.github.io/webidl/#legacy-platform-object-delete for the
# for the deletePropertyByIndex override hook.
push(@$outputArray, "bool ${className}::deletePropertyByIndex(JSCell* cell, ExecState* state, unsigned index)\n");
push(@$outputArray, "{\n");
push(@$outputArray, " auto& thisObject = *jsCast<${className}*>(cell);\n");
push(@$outputArray, " auto& impl = thisObject.wrapped();\n");
# 1. If O supports indexed properties and P is an array index property name, then:
# 1. Let index be the result of calling ToUint32(P).
# 2. If index is not a supported property index, then return true.
# 3. Return false.
# NOTE: For deletePropertyByIndex, if there is an indexed getter, checking isSupportedPropertyIndex()
# is all that needs to be done, no need to generate the .
if (GetIndexedGetterOperation($interface)) {
push(@$outputArray, " return !impl.isSupportedPropertyIndex(index);\n");
} else {
push(@$outputArray, " VM& vm = state->vm();\n");
push(@$outputArray, " auto propertyName = Identifier::from(vm, index);\n");
# GenerateDeletePropertyCommon implements step 2.
GenerateDeletePropertyCommon($outputArray, $interface, $className, $operation, $conditional);
# FIXME: Instead of calling down JSObject::deletePropertyByIndex, perhaps we should implement
# the remaineder of the algoritm (steps 3 and 4) ourselves.
# 3. If O has an own property with name P, then:
# 1. If the property is not configurable, then return false.
# 2. Otherwise, remove the property from O.
# 3. Return true.
push(@$outputArray, " return JSObject::deletePropertyByIndex(cell, state, index);\n");
}
push(@$outputArray, "}\n\n");
}
sub GenerateNamedDeleterDefinition
{
my ($outputArray, $interface, $className) = @_;
return if $interface->extendedAttributes->{CustomDeleteProperty};
my $namedDeleterOperation = GetNamedDeleterOperation($interface);
# This implements https://heycam.github.io/webidl/#legacy-platform-object-delete using
# the deleteProperty and deletePropertyByIndex override hooks.
assert("Named property deleters are not allowed without a corresponding named property getter.") if !GetNamedGetterOperation($interface);
assert("Named property deleters are not allowed on global object interfaces.") if IsGlobalOrPrimaryGlobalInterface($interface);
my $conditional = $namedDeleterOperation->extendedAttributes->{Conditional};
if ($conditional) {
my $conditionalString = $codeGenerator->GenerateConditionalStringFromAttributeValue($conditional);
push(@$outputArray, "#if ${conditionalString}\n\n");;
}
GenerateDeleteProperty($outputArray, $interface, $className, $namedDeleterOperation, $conditional);
GenerateDeletePropertyByIndex($outputArray, $interface, $className, $namedDeleterOperation, $conditional);
push(@implContent, "#endif\n\n") if $conditional;
}
sub GenerateHeaderContentHeader
{
my $interface = shift;
my $className = "JS" . $interface->type->name;
my @headerContentHeader;
if ($interface->extendedAttributes->{AppleCopyright}) {
@headerContentHeader = split("\r", $beginAppleCopyrightForHeaderFiles);
} else {
@headerContentHeader = split("\r", $headerTemplate);
}
push(@headerContentHeader, "\n#pragma once\n\n");
my $conditionalString = $codeGenerator->GenerateConditionalString($interface);
push(@headerContentHeader, "#if ${conditionalString}\n\n") if $conditionalString;
return @headerContentHeader;
}
sub GenerateImplementationContentHeader
{
my $interface = shift;
my $className = "JS" . $interface->type->name;
my @implContentHeader;
if ($interface->extendedAttributes->{AppleCopyright}) {
@implContentHeader = split("\r", $beginAppleCopyrightForSourceFiles);
} else {
@implContentHeader = split("\r", $headerTemplate);
}
push(@implContentHeader, "\n#include \"config.h\"\n");
my $conditionalString = $codeGenerator->GenerateConditionalString($interface);
push(@implContentHeader, "\n#if ${conditionalString}\n\n") if $conditionalString;
push(@implContentHeader, "#include \"$className.h\"\n\n");
return @implContentHeader;
}
sub NeedsImplementationClass
{
my ($interface) = @_;
return 0 if $interface->extendedAttributes->{JSBuiltin};
return 1;
}
sub ShouldGenerateToWrapped
{
my ($hasParent, $interface) = @_;
return 0 if not NeedsImplementationClass($interface);
return 1 if !$hasParent or $interface->extendedAttributes->{JSGenerateToNativeObject};
return 1 if $interface->parentType && $interface->parentType->name eq "EventTarget";
return 0;
}
sub ShouldGenerateWrapperOwnerCode
{
my ($hasParent, $interface) = @_;
return 0 if not NeedsImplementationClass($interface);
return 1 if !$hasParent;
return 1 if GetGenerateIsReachable($interface);
return 1 if GetCustomIsReachable($interface);
return 1 if $interface->extendedAttributes->{JSCustomFinalize};
return 1 if $codeGenerator->InheritsExtendedAttribute($interface, "ActiveDOMObject");
return 0;
}
sub ShouldGenerateToJSDeclaration
{
my ($hasParent, $interface) = @_;
return 0 if ($interface->extendedAttributes->{SuppressToJSObject});
return 0 if not NeedsImplementationClass($interface);
return 0 if $interface->extendedAttributes->{CustomProxyToJSObject};
return 1 if (!$hasParent or $interface->extendedAttributes->{JSGenerateToJSObject} or $interface->extendedAttributes->{CustomToJSObject});
return 1 if $interface->parentType && $interface->parentType->name eq "EventTarget";
return 1 if $interface->extendedAttributes->{Constructor} or $interface->extendedAttributes->{NamedConstructor};
return 0;
}
sub ShouldGenerateToJSImplementation
{
my ($hasParent, $interface) = @_;
return 0 if not ShouldGenerateToJSDeclaration($hasParent, $interface);
return 1 if not $interface->extendedAttributes->{CustomToJSObject};
return 0;
}
sub GetTypeNameForDisplayInException
{
my ($type) = @_;
# FIXME: Add more type specializations.
return "(" . join(" or ", map { $_->name } GetFlattenedMemberTypes($type)) . ")" if $type->isUnion;
return $type->name;
}
sub GetArgumentExceptionFunction
{
my ($interface, $argument, $argumentIndex, $quotedFunctionName) = @_;
my $name = $argument->name;
my $visibleInterfaceName = $codeGenerator->GetVisibleInterfaceName($interface);
my $typeName = GetTypeNameForDisplayInException($argument->type);
if ($codeGenerator->IsCallbackInterface($argument->type) || $codeGenerator->IsCallbackFunction($argument->type)) {
# FIXME: We should have specialized messages for callback interfaces vs. callback functions.
return "throwArgumentMustBeFunctionError(state, scope, ${argumentIndex}, \"${name}\", \"${visibleInterfaceName}\", ${quotedFunctionName});";
}
if ($codeGenerator->IsWrapperType($argument->type) || $codeGenerator->IsBufferSourceType($argument->type)) {
return "throwArgumentTypeError(state, scope, ${argumentIndex}, \"${name}\", \"${visibleInterfaceName}\", ${quotedFunctionName}, \"${typeName}\");";
}
if ($codeGenerator->IsEnumType($argument->type)) {
my $className = GetEnumerationClassName($argument->type, $interface);
return "throwArgumentMustBeEnumError(state, scope, ${argumentIndex}, \"${name}\", \"${visibleInterfaceName}\", ${quotedFunctionName}, expectedEnumerationValues<${className}>());";
}
return undef;
}
sub GetArgumentExceptionThrower
{
my ($interface, $argument, $argumentIndex, $quotedFunctionName) = @_;
my $functionCall = GetArgumentExceptionFunction($interface, $argument, $argumentIndex, $quotedFunctionName);
return "[](JSC::ExecState& state, JSC::ThrowScope& scope) { " . $functionCall . " }" if $functionCall;
}
sub GetAttributeExceptionFunction
{
my ($interface, $attribute) = @_;
my $name = $attribute->name;
my $visibleInterfaceName = $codeGenerator->GetVisibleInterfaceName($interface);
my $typeName = GetTypeNameForDisplayInException($attribute->type);
if ($codeGenerator->IsWrapperType($attribute->type) || $codeGenerator->IsBufferSourceType($attribute->type)) {
return "throwAttributeTypeError(state, scope, \"${visibleInterfaceName}\", \"${name}\", \"${typeName}\");";
}
}
sub GetAttributeExceptionThrower
{
my ($interface, $attribute) = @_;
my $functionCall = GetAttributeExceptionFunction($interface, $attribute);
return "[](JSC::ExecState& state, JSC::ThrowScope& scope) { " . $functionCall . " }" if $functionCall;
}
sub PassArgumentExpression
{
my ($name, $context) = @_;
my $type = $context->type;
return "WTFMove(${name})" if $type->isNullable;
if ($codeGenerator->IsBufferSourceType($type)) {
return "*${name}" if $type->name eq "ArrayBuffer";
return "${name}.releaseNonNull()";
}
return "${name}.releaseNonNull()" if $codeGenerator->IsCallbackInterface($type) || $codeGenerator->IsCallbackFunction($type) || ($codeGenerator->IsPromiseType($type) && (ref($context) ne "IDLArgument" || !$context->isOptional));
return "*${name}" if $codeGenerator->IsWrapperType($type);
return "WTFMove(${name})";
}
sub GetAttributeGetterName
{
my ($interface, $className, $attribute) = @_;
return $codeGenerator->WK_lcfirst($className) . "Constructor" . $codeGenerator->WK_ucfirst($attribute->name) if $attribute->isStatic;
return GetJSBuiltinFunctionName($className, $attribute) if IsJSBuiltin($interface, $attribute);
return "js" . $interface->type->name . $codeGenerator->WK_ucfirst($attribute->name) . ($codeGenerator->IsConstructorType($attribute->type) ? "Constructor" : "");
}
sub GetAttributeSetterName
{
my ($interface, $className, $attribute) = @_;
return "set" . $codeGenerator->WK_ucfirst($className) . "Constructor" . $codeGenerator->WK_ucfirst($attribute->name) if $attribute->isStatic;
return "set" . $codeGenerator->WK_ucfirst(GetJSBuiltinFunctionName($className, $attribute)) if IsJSBuiltin($interface, $attribute);
return "setJS" . $interface->type->name . $codeGenerator->WK_ucfirst($attribute->name) . ($codeGenerator->IsConstructorType($attribute->type) ? "Constructor" : "");
}
sub GetFunctionName
{
my ($interface, $className, $operation) = @_;
return GetJSBuiltinFunctionName($className, $operation) if IsJSBuiltin($interface, $operation);
my $functionName = $operation->name;
$functionName = "SymbolIterator" if $functionName eq "[Symbol.Iterator]";
my $kind = $operation->isStatic ? "Constructor" : (OperationShouldBeOnInstance($interface, $operation) ? "Instance" : "Prototype");
return $codeGenerator->WK_lcfirst($className) . $kind . "Function" . $codeGenerator->WK_ucfirst($functionName);
}
sub GetFullyQualifiedImplementationCallName
{
my ($interface, $property, $implementationName, $implExpression, $conditional) = @_;
my $implementedBy = $property->extendedAttributes->{ImplementedBy};
if ($implementedBy) {
AddToImplIncludes("${implementedBy}.h", $conditional);
return "WebCore::${implementedBy}::${implementationName}";
}
if ($property->isStatic || $property->extendedAttributes->{Constructor} || $property->extendedAttributes->{NamedConstructor}) {
return $interface->type->name . "::${implementationName}";
}
if ($property->isMapLike) {
return "forward" . $codeGenerator->WK_ucfirst($property->name) . "ToMapLike";
}
return "${implExpression}.${implementationName}";
}
sub AddAdditionalArgumentsForImplementationCall
{
my ($arguments, $interface, $property, $implExpression, $stateExpression, $thisObjectExpression) = @_;
if ($property->extendedAttributes->{ImplementedBy} && !$property->isStatic) {
unshift(@$arguments, $implExpression);
}
if ($property->isMapLike) {
push(@$arguments, $stateExpression);
push(@$arguments, $thisObjectExpression);
}
}
sub GetSpecialAccessorOperationForType
{
my ($interface, $special, $firstParameterType, $numberOfParameters) = @_;
foreach my $operation (@{$interface->operations}, @{$interface->anonymousOperations}) {
my $specials = $operation->specials;
my $specialExists = grep { $_ eq $special } @$specials;
my $arguments = $operation->arguments;
if ($specialExists and scalar(@$arguments) == $numberOfParameters and $arguments->[0]->type->name eq $firstParameterType) {
return $operation;
}
}
return 0;
}
sub IsGlobalOrPrimaryGlobalInterface
{
my $interface = shift;
return $interface->extendedAttributes->{Global} || $interface->extendedAttributes->{PrimaryGlobal};
}
sub AttributeShouldBeOnInstance
{
my $interface = shift;
my $attribute = shift;
return 1 if IsGlobalOrPrimaryGlobalInterface($interface);
return 1 if $codeGenerator->IsConstructorType($attribute->type);
# [Unforgeable] attributes should be on the instance.
# https://heycam.github.io/webidl/#Unforgeable
return 1 if IsUnforgeable($interface, $attribute);
if ($interface->extendedAttributes->{CheckSecurity}) {
return 0 if $attribute->extendedAttributes->{DoNotCheckSecurity};
return 0 if $attribute->extendedAttributes->{DoNotCheckSecurityOnGetter};
return 1;
}
return 0;
}
sub IsAlwaysExposedOnInterface
{
my ($interfaceExposures, $contextExposures) = @_;
my %contextExposureSet = ();
if (ref($contextExposures) eq "ARRAY") {
foreach my $contextExposure (@$contextExposures) {
$contextExposureSet{$contextExposure} = 1;
}
} else {
$contextExposureSet{$contextExposures} = 1;
}
if (ref($interfaceExposures) ne "ARRAY") {
$interfaceExposures = [$interfaceExposures];
}
foreach my $interfaceExposure (@$interfaceExposures) {
return 0 unless exists $contextExposureSet{$interfaceExposure};
}
return 1;
}
sub NeedsRuntimeCheck
{
my ($interface, $context) = @_;
if ($context->extendedAttributes->{Exposed}) {
my $interfaceExposures = $interface->extendedAttributes->{Exposed} || "Window";
return 1 if !IsAlwaysExposedOnInterface($interfaceExposures, $context->extendedAttributes->{Exposed});
}
return $context->extendedAttributes->{EnabledAtRuntime}
|| $context->extendedAttributes->{EnabledForContext}
|| $context->extendedAttributes->{EnabledForWorld}
|| $context->extendedAttributes->{EnabledBySetting}
|| $context->extendedAttributes->{DisabledByQuirk}
|| $context->extendedAttributes->{SecureContext}
|| $context->extendedAttributes->{ContextHasServiceWorkerScheme}
|| $context->extendedAttributes->{CustomEnabled};
}
# https://heycam.github.io/webidl/#es-operations
sub OperationShouldBeOnInstance
{
my ($interface, $operation) = @_;
return 1 if IsGlobalOrPrimaryGlobalInterface($interface);
# [Unforgeable] operations should be on the instance. https://heycam.github.io/webidl/#Unforgeable
if (IsUnforgeable($interface, $operation)) {
assert("The bindings generator does not support putting runtime-enabled operations on the instance yet (except for global objects):[" . $interface->type->name . "::" . $operation->name . "]") if NeedsRuntimeCheck($interface, $operation);
return 1;
}
return 0;
}
sub OperationHasForcedReturnValue
{
my ($operation) = @_;
foreach my $argument (@{$operation->arguments}) {
return 1 if $argument->extendedAttributes->{ReturnValue};
}
return 0;
}
sub IsAcceleratedDOMAttribute
{
my ($interface, $attribute) = @_;
# If we use CustomGetterSetter in IDL code generator we cannot skip type check.
return 0 if NeedsRuntimeCheck($interface, $attribute) and AttributeShouldBeOnInstance($interface, $attribute);
return 0 if $attribute->extendedAttributes->{PrivateIdentifier} and AttributeShouldBeOnInstance($interface, $attribute);
# If the interface has special logic for casting we cannot hoist type check to JSC.
return 0 if $interface->extendedAttributes->{ImplicitThis};
return 0 if $interface->extendedAttributes->{CustomProxyToJSObject};
return 0 if $attribute->isStatic;
return 0 if $attribute->isMapLike;
return 0 if $codeGenerator->IsConstructorType($attribute->type);
return 0 if IsJSBuiltin($interface, $attribute);
return 0 if $attribute->extendedAttributes->{LenientThis};
return 0 if $codeGenerator->IsPromiseType($attribute->type);
return 0 if $attribute->extendedAttributes->{DOMJIT};
return 1;
}
sub GetJSCAttributesForAttribute
{
my $interface = shift;
my $attribute = shift;
my @specials = ();
push(@specials, "JSC::PropertyAttribute::DontDelete") if IsUnforgeable($interface, $attribute);
# As per Web IDL specification, constructor properties on the ECMAScript global object should not be enumerable.
my $isGlobalConstructor = $codeGenerator->IsConstructorType($attribute->type);
push(@specials, "JSC::PropertyAttribute::DontEnum") if ($attribute->extendedAttributes->{NotEnumerable} || $isGlobalConstructor);
push(@specials, "JSC::PropertyAttribute::ReadOnly") if IsReadonly($attribute);
push(@specials, "JSC::PropertyAttribute::CustomAccessor") unless $isGlobalConstructor or IsJSBuiltin($interface, $attribute);
push(@specials, "JSC::PropertyAttribute::DOMAttribute") if IsAcceleratedDOMAttribute($interface, $attribute);
push(@specials, "JSC::PropertyAttribute::DOMJITAttribute") if $attribute->extendedAttributes->{DOMJIT};
push(@specials, "JSC::PropertyAttribute::Accessor | JSC::PropertyAttribute::Builtin") if IsJSBuiltin($interface, $attribute);
return "static_cast<unsigned>(" . ((@specials > 0) ? join(" | ", @specials) : "0") . ")";
}
sub GetIndexedGetterOperation
{
my $interface = shift;
return GetSpecialAccessorOperationForType($interface, "getter", "unsigned long", 1);
}
sub GetIndexedSetterOperation
{
my $interface = shift;
return GetSpecialAccessorOperationForType($interface, "setter", "unsigned long", 2);
}
sub GetNamedGetterOperation
{
my $interface = shift;
return GetSpecialAccessorOperationForType($interface, "getter", "DOMString", 1);
}
sub GetNamedSetterOperation
{
my $interface = shift;
return GetSpecialAccessorOperationForType($interface, "setter", "DOMString", 2);
}
sub GetNamedDeleterOperation
{
my $interface = shift;
return GetSpecialAccessorOperationForType($interface, "deleter", "DOMString", 1);
}
sub InstanceOperationCount
{
my $interface = shift;
my $count = 0;
foreach my $operation (@{$interface->operations}) {
$count++ if OperationShouldBeOnInstance($interface, $operation);
}
return $count;
}
sub PrototypeOperationCount
{
my $interface = shift;
my $count = 0;
foreach my $operation (@{$interface->operations}) {
$count++ if !$operation->isStatic && !OperationShouldBeOnInstance($interface, $operation);
}
$count += scalar @{$interface->iterable->operations} if $interface->iterable;
$count += scalar @{$interface->mapLike->operations} if $interface->mapLike;
$count += scalar @{$interface->serializable->operations} if $interface->serializable;
return $count;
}
sub InstancePropertyCount
{
my $interface = shift;
my $count = 0;
foreach my $attribute (@{$interface->attributes}) {
$count++ if AttributeShouldBeOnInstance($interface, $attribute);
}
$count += InstanceOperationCount($interface);
return $count;
}
sub PrototypePropertyCount
{
my $interface = shift;
my $count = 0;
foreach my $attribute (@{$interface->attributes}) {
$count++ if !AttributeShouldBeOnInstance($interface, $attribute);
}
$count += PrototypeOperationCount($interface);
$count++ if NeedsConstructorProperty($interface);
return $count;
}
sub InstanceOverridesGetOwnPropertySlot
{
my $interface = shift;
return $interface->extendedAttributes->{CustomGetOwnPropertySlot}
|| $interface->extendedAttributes->{Plugin}
|| GetIndexedGetterOperation($interface)
|| GetNamedGetterOperation($interface);
}
sub InstanceOverridesGetOwnPropertyNames
{
my $interface = shift;
return $interface->extendedAttributes->{CustomGetOwnPropertyNames}
|| GetIndexedGetterOperation($interface)
|| GetNamedGetterOperation($interface);
}
sub InstanceOverridesPut
{
my $interface = shift;
return $interface->extendedAttributes->{CustomPut}
|| $interface->extendedAttributes->{Plugin}
|| GetIndexedSetterOperation($interface)
|| GetNamedSetterOperation($interface);
}
sub InstanceOverridesDefineOwnProperty
{
my $interface = shift;
return 0 if $interface->extendedAttributes->{DefaultDefineOwnProperty};
return $interface->extendedAttributes->{CustomDefineOwnProperty}
|| GetIndexedSetterOperation($interface)
|| GetNamedSetterOperation($interface);
}
sub InstanceOverridesDeleteProperty
{
my $interface = shift;
return $interface->extendedAttributes->{CustomDeleteProperty}
|| GetNamedDeleterOperation($interface);
}
sub PrototypeHasStaticPropertyTable
{
my $interface = shift;
my $numConstants = @{$interface->constants};
return $numConstants > 0 || PrototypePropertyCount($interface) > 0;
}
sub InstanceNeedsVisitChildren
{
my $interface = shift;
foreach my $attribute (@{$interface->attributes}) {
return 1 if $attribute->extendedAttributes->{CachedAttribute};
}
return 1 if $interface->extendedAttributes->{JSCustomMarkFunction};
return 1 if $interface->extendedAttributes->{ReportExtraMemoryCost};
return 0;
}
sub InstanceNeedsEstimatedSize
{
my $interface = shift;
return $interface->extendedAttributes->{ReportExtraMemoryCost};
}
sub GetImplClassName
{
my $interface = shift;
return $interface->type->name;
}
sub IsClassNameWordBoundary
{
my ($name, $i) = @_;
# Interpret negative numbers as distance from end of string, just as the substr function does.
$i += length($name) if $i < 0;
return 0 if $i < 0;
return 1 if $i == 0;
return 1 if $i == length($name);
return 0 if $i > length($name);
my $checkString = substr($name, $i - 1);
return $checkString =~ /^[^A-Z][A-Z]/ || $checkString =~ /^[A-Z][A-Z][^A-Z]/;
}
sub IsPrefixRemovable
{
my ($class, $name, $i) = @_;
return IsClassNameWordBoundary($name, $i)
&& (IsClassNameWordBoundary($class, $i) && substr($class, 0, $i) eq substr($name, 0, $i)
|| IsClassNameWordBoundary($class, -$i) && substr($class, -$i) eq substr($name, 0, $i));
}
sub GetNestedClassName
{
my ($interface, $name) = @_;
my $class = GetImplClassName($interface);
my $member = $codeGenerator->WK_ucfirst($name);
# Since the enumeration name will be nested in the class name's namespace, remove any words
# that happen to match the start or end of the class name. If an enumeration is named TrackType or
# TextTrackType, and the class is named TextTrack, then we will get a name like TextTrack::Type.
my $memberLength = length($member);
my $longestPrefixLength = 0;
if ($member =~ /^[A-Z]./) {
for (my $i = 2; $i < $memberLength - 1; $i++) {
$longestPrefixLength = $i if IsPrefixRemovable($class, $member, $i);
}
}
$member = substr($member, $longestPrefixLength);
return "${class}::$member";
}
sub GetEnumerationClassName
{
my ($type, $interface) = @_;
assert("Not a type") if ref($type) ne "IDLType";
if ($codeGenerator->HasEnumImplementationNameOverride($type)) {
return $codeGenerator->GetEnumImplementationNameOverride($type);
}
my $name = $type->name;
return $name if $codeGenerator->IsExternalEnumType($type);
return $name unless defined($interface);
return GetNestedClassName($interface, $name);
}
sub GetEnumerationValueName
{
my ($name) = @_;
return "EmptyString" if $name eq "";
$name = join("", map { $codeGenerator->WK_ucfirst($_) } split("-", $name));
$name = "_$name" if $name =~ /^\d/;
return $name;
}
sub GenerateEnumerationHeader
{
my ($object, $enumeration, $className) = @_;
# - Add default header template and header protection.
push(@headerContentHeader, GenerateHeaderContentHeader($enumeration));
$headerIncludes{"${className}.h"} = 1;
push(@headerContent, "\nnamespace WebCore {\n\n");
push(@headerContent, GenerateEnumerationHeaderContent($enumeration, $className));
push(@headerContent, "} // namespace WebCore\n");
my $conditionalString = $codeGenerator->GenerateConditionalString($enumeration);
push(@headerContent, "\n#endif // ${conditionalString}\n") if $conditionalString;
}
sub GenerateEnumerationImplementation
{
my ($object, $enumeration, $className) = @_;
# - Add default header template
push(@implContentHeader, GenerateImplementationContentHeader($enumeration));
push(@implContent, "\n\nnamespace WebCore {\n");
push(@implContent, "using namespace JSC;\n\n");
push(@implContent, GenerateEnumerationImplementationContent($enumeration, $className));
push(@implContent, "} // namespace WebCore\n");
my $conditionalString = $codeGenerator->GenerateConditionalString($enumeration);
push(@implContent, "\n#endif // ${conditionalString}\n") if $conditionalString;
}
sub GenerateEnumerationImplementationContent
{
my ($enumeration, $className, $interface, $conditionalString) = @_;
# FIXME: A little ugly to have this be a side effect instead of a return value.
AddToImplIncludes("<JavaScriptCore/JSString.h>");
AddToImplIncludes("<JavaScriptCore/JSCInlines.h>");
AddToImplIncludes("JSDOMConvertEnumeration.h");
my $result = "";
$result .= "#if ${conditionalString}\n\n" if $conditionalString;
$result .= "String convertEnumerationToString($className enumerationValue)\n";
$result .= "{\n";
AddToImplIncludes("<wtf/NeverDestroyed.h>");
$result .= " static const NeverDestroyed<String> values[] = {\n";
foreach my $value (@{$enumeration->values}) {
if ($value eq "") {
$result .= " emptyString(),\n";
} else {
$result .= " MAKE_STATIC_STRING_IMPL(\"$value\"),\n";
}
}
$result .= " };\n";
my $index = 0;
foreach my $value (@{$enumeration->values}) {
my $enumerationValueName = GetEnumerationValueName($value);
$result .= " static_assert(static_cast<size_t>(${className}::$enumerationValueName) == $index, \"${className}::$enumerationValueName is not $index as expected\");\n";
$index++;
}
$result .= " ASSERT(static_cast<size_t>(enumerationValue) < WTF_ARRAY_LENGTH(values));\n";
$result .= " return values[static_cast<size_t>(enumerationValue)];\n";
$result .= "}\n\n";
# FIXME: Change to take VM& instead of ExecState*.
$result .= "template<> JSString* convertEnumerationToJS(ExecState& state, $className enumerationValue)\n";
$result .= "{\n";
$result .= " return jsStringWithCache(&state, convertEnumerationToString(enumerationValue));\n";
$result .= "}\n\n";
# FIXME: Change to take VM& instead of ExecState&.
# FIXME: Consider using toStringOrNull to make exception checking faster.
# FIXME: Consider finding a more efficient way to match against all the strings quickly.
$result .= "template<> Optional<$className> parseEnumeration<$className>(ExecState& state, JSValue value)\n";
$result .= "{\n";
$result .= " auto stringValue = value.toWTFString(&state);\n";
foreach my $value (@{$enumeration->values}) {
my $enumerationValueName = GetEnumerationValueName($value);
if ($value eq "") {
$result .= " if (stringValue.isEmpty())\n";
} else {
$result .= " if (stringValue == \"$value\")\n";
}
$result .= " return ${className}::${enumerationValueName};\n";
}
$result .= " return WTF::nullopt;\n";
$result .= "}\n\n";
$result .= "template<> const char* expectedEnumerationValues<$className>()\n";
$result .= "{\n";
$result .= " return \"\\\"" . join ("\\\", \\\"", @{$enumeration->values}) . "\\\"\";\n";
$result .= "}\n\n";
$result .= "#endif\n\n" if $conditionalString;
return $result;
}
sub GenerateEnumerationsImplementationContent
{
my ($interface, $enumerations) = @_;
return "" unless @$enumerations;
my $result = "";
foreach my $enumeration (@$enumerations) {
my $className = GetEnumerationClassName($enumeration->type, $interface);
my $conditionalString = $codeGenerator->GenerateConditionalString($enumeration);
$result .= GenerateEnumerationImplementationContent($enumeration, $className, $interface, $conditionalString);
}
return $result;
}
sub GenerateEnumerationHeaderContent
{
my ($enumeration, $className, $conditionalString) = @_;
$headerIncludes{"JSDOMConvertEnumeration.h"} = 1;
my $result = "";
$result .= "#if ${conditionalString}\n\n" if $conditionalString;
my $exportMacro = GetExportMacroForJSClass($enumeration);
$result .= "${exportMacro}String convertEnumerationToString($className);\n";
$result .= "template<> ${exportMacro}JSC::JSString* convertEnumerationToJS(JSC::ExecState&, $className);\n\n";
$result .= "template<> ${exportMacro}Optional<$className> parseEnumeration<$className>(JSC::ExecState&, JSC::JSValue);\n";
$result .= "template<> ${exportMacro}const char* expectedEnumerationValues<$className>();\n\n";
$result .= "#endif\n\n" if $conditionalString;
return $result;
}
sub GenerateEnumerationsHeaderContent
{
my ($interface, $enumerations) = @_;
return "" unless @$enumerations;
# FIXME: Could optimize this to only generate the parts of each enumeration that are actually
# used, which would require iterating over everything in the interface.
my $result = "";
foreach my $enumeration (@$enumerations) {
my $className = GetEnumerationClassName($enumeration->type, $interface);
my $conditionalString = $codeGenerator->GenerateConditionalString($enumeration);
$result .= GenerateEnumerationHeaderContent($enumeration, $className, $conditionalString);
}
return $result;
}
sub GetDictionaryClassName
{
my ($type, $interface) = @_;
if ($codeGenerator->HasDictionaryImplementationNameOverride($type)) {
return $codeGenerator->GetDictionaryImplementationNameOverride($type);
}
my $name = $type->name;
return $name if $codeGenerator->IsExternalDictionaryType($type);
return $name unless defined($interface);
return GetNestedClassName($interface, $name);
}
sub GenerateDefaultValue
{
my ($typeScope, $context, $type, $defaultValue) = @_;
if ($codeGenerator->IsStringType($type)) {
my $useAtomString = $type->extendedAttributes->{AtomString};
if ($defaultValue eq "null") {
return $useAtomString ? "nullAtom()" : "String()";
} elsif ($defaultValue eq "\"\"") {
return $useAtomString ? "emptyAtom()" : "emptyString()";
} else {
return $useAtomString ? "AtomString(${defaultValue}, AtomString::ConstructFromLiteral)" : "${defaultValue}_s";
}
}
if ($codeGenerator->IsEnumType($type)) {
# FIXME: Would be nice to report an error if the value does not have quote marks around it.
# FIXME: Would be nice to report an error if the value is not one of the enumeration values.
if ($defaultValue eq "null") {
die if !$type->isNullable;
return "WTF::nullopt";
}
my $className = GetEnumerationClassName($type, $typeScope);
my $enumerationValueName = GetEnumerationValueName(substr($defaultValue, 1, -1));
return $className . "::" . $enumerationValueName;
}
if ($defaultValue eq "null") {
if ($type->isUnion) {
return "WTF::nullopt" if $type->isNullable;
my $IDLType = GetIDLType($typeScope, $type);
return "convert<${IDLType}>(state, jsNull());";
}
return "jsNull()" if $type->name eq "any";
return "nullptr" if $codeGenerator->IsWrapperType($type) || $codeGenerator->IsBufferSourceType($type);
return "String()" if $codeGenerator->IsStringType($type);
return "WTF::nullopt";
}
if ($defaultValue eq "[]") {
my $IDLType = GetIDLType($typeScope, $type);
return "Converter<${IDLType}>::ReturnType{ }";
}
return "jsUndefined()" if $defaultValue eq "undefined";
return "PNaN" if $defaultValue eq "NaN";
return $defaultValue;
}
sub GenerateDictionaryHeaderContent
{
my ($dictionary, $className, $conditionalString) = @_;
$headerIncludes{"JSDOMConvertDictionary.h"} = 1;
my $exportMacro = GetExportMacroForJSClass($dictionary);
my $result = "";
$result .= "#if ${conditionalString}\n\n" if $conditionalString;
$result .= "template<> ${exportMacro}${className} convertDictionary<${className}>(JSC::ExecState&, JSC::JSValue);\n\n";
if ($dictionary->extendedAttributes->{JSGenerateToJSObject}) {
$result .= "${exportMacro}JSC::JSObject* convertDictionaryToJS(JSC::ExecState&, JSDOMGlobalObject&, const ${className}&);\n\n";
}
$result .= "#endif\n\n" if $conditionalString;
return $result;
}
sub GenerateDictionariesHeaderContent
{
my ($typeScope, $allDictionaries) = @_;
return "" unless @$allDictionaries;
my $result = "";
foreach my $dictionary (@$allDictionaries) {
$headerIncludes{$typeScope->type->name . ".h"} = 1 if $typeScope;
my $className = GetDictionaryClassName($dictionary->type, $typeScope);
my $conditionalString = $codeGenerator->GenerateConditionalString($dictionary);
$result .= GenerateDictionaryHeaderContent($dictionary, $className, $conditionalString);
}
return $result;
}
sub GenerateDictionaryImplementationContent
{
my ($dictionary, $className, $interface) = @_;
my $result = "";
my $name = $dictionary->type->name;
my $typeScope = $interface || $dictionary;
my $conditional = $dictionary->extendedAttributes->{Conditional};
if ($conditional) {
my $conditionalString = $codeGenerator->GenerateConditionalStringFromAttributeValue($conditional);
$result .= "#if ${conditionalString}\n\n";
}
# FIXME: A little ugly to have this be a side effect instead of a return value.
AddToImplIncludes("<JavaScriptCore/JSCInlines.h>");
AddToImplIncludes("JSDOMConvertDictionary.h");
# https://heycam.github.io/webidl/#es-dictionary
$result .= "template<> $className convertDictionary<$className>(ExecState& state, JSValue value)\n";
$result .= "{\n";
$result .= " VM& vm = state.vm();\n";
$result .= " auto throwScope = DECLARE_THROW_SCOPE(vm);\n";
$result .= " bool isNullOrUndefined = value.isUndefinedOrNull();\n";
$result .= " auto* object = isNullOrUndefined ? nullptr : value.getObject();\n";
# 1. If Type(V) is not Undefined, Null or Object, then throw a TypeError.
$result .= " if (UNLIKELY(!isNullOrUndefined && !object)) {\n";
$result .= " throwTypeError(&state, throwScope);\n";
$result .= " return { };\n";
$result .= " }\n";
# 2. Let dict be an empty dictionary value of type D; every dictionary member is initially considered to be not present.
# 3. Let dictionaries be a list consisting of D and all of D’s inherited dictionaries, in order from least to most derived.
my @dictionaries;
push(@dictionaries, $dictionary);
my $parentType = $dictionary->parentType;
while (defined($parentType)) {
my $parentDictionary = $codeGenerator->GetDictionaryByType($parentType);
assert("Unable to find definition for dictionary named '" . $parentType->name . "'!") unless defined($parentDictionary);
unshift(@dictionaries, $parentDictionary);
$parentType = $parentDictionary->parentType;
}
my $arguments = "";
my $comma = "";
$result .= " $className result;\n";
# 4. For each dictionary dictionary in dictionaries, in order:
foreach my $dictionary (@dictionaries) {
# For each dictionary member member declared on dictionary, in lexicographical order:
my @sortedMembers = sort { $a->name cmp $b->name } @{$dictionary->members};
foreach my $member (@sortedMembers) {
$member->default("undefined") if $member->type->name eq "any" and !defined($member->default); # Use undefined as default value for member of type 'any' unless specified otherwise.
my $type = $member->type;
AddToImplIncludesForIDLType($type);
my $conditional = $member->extendedAttributes->{Conditional};
if ($conditional) {
my $conditionalString = $codeGenerator->GenerateConditionalStringFromAttributeValue($conditional);
$result .= "#if ${conditionalString}\n";
}
# 4.1. Let key be the identifier of member.
my $key = $member->name;
my $implementedAsKey = $member->extendedAttributes->{ImplementedAs} || $key;
# 4.2. Let value be an ECMAScript value, depending on Type(V):
$result .= " JSValue ${key}Value;\n";
$result .= " if (isNullOrUndefined)\n";
$result .= " ${key}Value = jsUndefined();\n";
$result .= " else {\n";
$result .= " ${key}Value = object->get(&state, Identifier::fromString(vm, \"${key}\"));\n";
$result .= " RETURN_IF_EXCEPTION(throwScope, { });\n";
$result .= " }\n";
my $IDLType = GetIDLType($typeScope, $type);
# 4.3. If value is not undefined, then:
$result .= " if (!${key}Value.isUndefined()) {\n";
my $nativeValue = JSValueToNative($typeScope, $member, "${key}Value", $member->extendedAttributes->{Conditional}, "&state", "state", "", "*jsCast<JSDOMGlobalObject*>(state.lexicalGlobalObject())");
$result .= " result.$implementedAsKey = $nativeValue;\n";
$result .= " RETURN_IF_EXCEPTION(throwScope, { });\n";
# Value is undefined.
# 4.4. Otherwise, if value is undefined but the dictionary member has a default value, then:
if (!$member->isRequired && defined $member->default) {
$result .= " } else\n";
$result .= " result.$implementedAsKey = " . GenerateDefaultValue($typeScope, $member, $member->type, $member->default) . ";\n";
} elsif ($member->isRequired) {
# 4.5. Otherwise, if value is undefined and the dictionary member is a required dictionary member, then throw a TypeError.
$result .= " } else {\n";
$result .= " throwRequiredMemberTypeError(state, throwScope, \"". $member->name ."\", \"$name\", \"". GetTypeNameForDisplayInException($type) ."\");\n";
$result .= " return { };\n";
$result .= " }\n";
} else {
$result .= " }\n";
}
$result .= "#endif\n" if $conditional;
}
}
# 5. Return dict.
$result .= " return result;\n";
$result .= "}\n\n";
if ($dictionary->extendedAttributes->{JSGenerateToJSObject}) {
AddToImplIncludes("JSDOMGlobalObject.h");
AddToImplIncludes("<JavaScriptCore/ObjectConstructor.h>");
$result .= "JSC::JSObject* convertDictionaryToJS(JSC::ExecState& state, JSDOMGlobalObject& globalObject, const ${className}& dictionary)\n";
$result .= "{\n";
$result .= " auto& vm = state.vm();\n\n";
# 1. Let O be ! ObjectCreate(%ObjectPrototype%).
$result .= " auto result = constructEmptyObject(&state, globalObject.objectPrototype());\n\n";
# 2. Let dictionaries be a list consisting of D and all of D’s inherited dictionaries,
# in order from least to most derived.
# NOTE: This was done above.
# 3. For each dictionary dictionary in dictionaries, in order:
foreach my $dictionary (@dictionaries) {
# 3.1. For each dictionary member member declared on dictionary, in lexicographical order:
my @sortedMembers = sort { $a->name cmp $b->name } @{$dictionary->members};
foreach my $member (@sortedMembers) {
my $key = $member->name;
my $implementedAsKey = $member->extendedAttributes->{ImplementedAs} || $key;
my $valueExpression = "dictionary.${implementedAsKey}";
my $conditional = $member->extendedAttributes->{Conditional};
if ($conditional) {
my $conditionalString = $codeGenerator->GenerateConditionalStringFromAttributeValue($conditional);
$result .= "#if ${conditionalString}\n";
}
# 1. Let key be the identifier of member.
# 2. If the dictionary member named key is present in V, then:
# 1. Let idlValue be the value of member on V.
# 2. Let value be the result of converting idlValue to an ECMAScript value.
# 3. Perform ! CreateDataProperty(O, key, value).
my $needsRuntimeCheck = NeedsRuntimeCheck($dictionary, $member);
my $indent = "";
if ($needsRuntimeCheck) {
my $runtimeEnableConditionalString = GenerateRuntimeEnableConditionalString($dictionary, $member, "true");
$result .= " if (${runtimeEnableConditionalString}) {\n";
$indent = " ";
}
if (!$member->isRequired && not defined $member->default) {
my $IDLType = GetIDLType($typeScope, $member->type);
my $conversionExpression = NativeToJSValueUsingReferences($member, $typeScope, "${IDLType}::extractValueFromNullable(${valueExpression})", "globalObject");
$result .= "${indent} if (!${IDLType}::isNullValue(${valueExpression})) {\n";
$result .= "${indent} auto ${key}Value = ${conversionExpression};\n";
$result .= "${indent} result->putDirect(vm, JSC::Identifier::fromString(vm, \"${key}\"), ${key}Value);\n";
$result .= "${indent} }\n";
} else {
my $conversionExpression = NativeToJSValueUsingReferences($member, $typeScope, $valueExpression, "globalObject");
$result .= "${indent} auto ${key}Value = ${conversionExpression};\n";
$result .= "${indent} result->putDirect(vm, JSC::Identifier::fromString(vm, \"${key}\"), ${key}Value);\n";
}
if ($needsRuntimeCheck) {
$result .= " }\n";
}
$result .= "#endif\n" if $conditional;
}
}
$result .= " return result;\n";
$result .= "}\n\n";
}
$result .= "#endif\n\n" if $conditional;
return $result;
}
sub GenerateDictionariesImplementationContent
{
my ($typeScope, $allDictionaries) = @_;
my $result = "";
foreach my $dictionary (@$allDictionaries) {
my $className = GetDictionaryClassName($dictionary->type, $typeScope);
$result .= GenerateDictionaryImplementationContent($dictionary, $className, $typeScope);
}
return $result;
}
sub GetJSTypeForNode
{
my ($interface) = @_;
if ($codeGenerator->InheritsInterface($interface, "Document")) {
return "JSDocumentWrapperType";
}
if ($codeGenerator->InheritsInterface($interface, "DocumentFragment")) {
return "JSDocumentFragmentNodeType";
}
if ($codeGenerator->InheritsInterface($interface, "DocumentType")) {
return "JSDocumentTypeNodeType";
}
if ($codeGenerator->InheritsInterface($interface, "ProcessingInstruction")) {
return "JSProcessingInstructionNodeType";
}
if ($codeGenerator->InheritsInterface($interface, "CDATASection")) {
return "JSCDATASectionNodeType";
}
if ($codeGenerator->InheritsInterface($interface, "Attr")) {
return "JSAttrNodeType";
}
if ($codeGenerator->InheritsInterface($interface, "Comment")) {
return "JSCommentNodeType";
}
if ($codeGenerator->InheritsInterface($interface, "Text")) {
return "JSTextNodeType";
}
if ($codeGenerator->InheritsInterface($interface, "Element")) {
return "JSElementType";
}
return "JSNodeType";
}
sub GenerateHeader
{
my ($object, $interface, $enumerations, $dictionaries) = @_;
my $interfaceName = $interface->type->name;
my $className = "JS$interfaceName";
my %structureFlags = ();
my $hasParent = $interface->parentType || $interface->extendedAttributes->{JSLegacyParent};
my $parentClassName = GetParentClassName($interface);
my $needsVisitChildren = InstanceNeedsVisitChildren($interface);
# - Add default header template and header protection
push(@headerContentHeader, GenerateHeaderContentHeader($interface));
if ($hasParent) {
$headerIncludes{"$parentClassName.h"} = 1;
} else {
$headerIncludes{"JSDOMWrapper.h"} = 1;
if ($interface->isException) {
$headerIncludes{"<JavaScriptCore/ErrorPrototype.h>"} = 1;
}
}
$headerIncludes{"SVGElement.h"} = 1 if $className =~ /^JSSVG/;
my $implType = GetImplClassName($interface);
my $numConstants = @{$interface->constants};
my $numAttributes = @{$interface->attributes};
my $numOperations = @{$interface->operations};
push(@headerContent, "\nnamespace WebCore {\n\n");
if ($codeGenerator->IsSVGAnimatedType($interface->type)) {
$headerIncludes{"SVGAnimatedPropertyImpl.h"} = 1;
} elsif ($codeGenerator->IsSVGPathSegType($interface->type)) {
$headerIncludes{"SVGPathSegImpl.h"} = 1;
} else {
$headerIncludes{"$interfaceName.h"} = 1 if $hasParent && $interface->extendedAttributes->{JSGenerateToNativeObject};
# Implementation class forward declaration
if (IsDOMGlobalObject($interface)) {
AddClassForwardIfNeeded($interface->type);
}
}
push(@headerContent, "class JSWindowProxy;\n\n") if $interfaceName eq "DOMWindow" or $interfaceName eq "RemoteDOMWindow";
my $exportMacro = GetExportMacroForJSClass($interface);
# Class declaration
push(@headerContent, "class $exportMacro$className : public $parentClassName {\n");
# Static create methods
push(@headerContent, "public:\n");
push(@headerContent, " using Base = $parentClassName;\n");
push(@headerContent, " using DOMWrapped = $implType;\n") if $hasParent;
if ($interfaceName eq "DOMWindow" || $interfaceName eq "RemoteDOMWindow") {
push(@headerContent, " static $className* create(JSC::VM& vm, JSC::Structure* structure, Ref<$implType>&& impl, JSWindowProxy* proxy)\n");
push(@headerContent, " {\n");
push(@headerContent, " $className* ptr = new (NotNull, JSC::allocateCell<$className>(vm.heap)) ${className}(vm, structure, WTFMove(impl), proxy);\n");
push(@headerContent, " ptr->finishCreation(vm, proxy);\n");
push(@headerContent, " return ptr;\n");
push(@headerContent, " }\n\n");
} elsif ($codeGenerator->InheritsInterface($interface, "WorkerGlobalScope") || $codeGenerator->InheritsInterface($interface, "WorkletGlobalScope")) {
push(@headerContent, " static $className* create(JSC::VM& vm, JSC::Structure* structure, Ref<$implType>&& impl, JSC::JSProxy* proxy)\n");
push(@headerContent, " {\n");
push(@headerContent, " $className* ptr = new (NotNull, JSC::allocateCell<$className>(vm.heap)) ${className}(vm, structure, WTFMove(impl));\n");
push(@headerContent, " ptr->finishCreation(vm, proxy);\n");
push(@headerContent, " return ptr;\n");
push(@headerContent, " }\n\n");
} elsif ($interface->extendedAttributes->{MasqueradesAsUndefined}) {
AddIncludesForImplementationTypeInHeader($implType);
push(@headerContent, " static $className* create(JSC::Structure* structure, JSDOMGlobalObject* globalObject, Ref<$implType>&& impl)\n");
push(@headerContent, " {\n");
push(@headerContent, " globalObject->masqueradesAsUndefinedWatchpoint()->fireAll(globalObject->vm(), \"Allocated masquerading object\");\n");
push(@headerContent, " $className* ptr = new (NotNull, JSC::allocateCell<$className>(globalObject->vm().heap)) $className(structure, *globalObject, WTFMove(impl));\n");
push(@headerContent, " ptr->finishCreation(globalObject->vm());\n");
push(@headerContent, " return ptr;\n");
push(@headerContent, " }\n\n");
} elsif (!NeedsImplementationClass($interface)) {
push(@headerContent, " static $className* create(JSC::Structure* structure, JSDOMGlobalObject* globalObject)\n");
push(@headerContent, " {\n");
push(@headerContent, " $className* ptr = new (NotNull, JSC::allocateCell<$className>(globalObject->vm().heap)) $className(structure, *globalObject);\n");
push(@headerContent, " ptr->finishCreation(globalObject->vm());\n");
push(@headerContent, " return ptr;\n");
push(@headerContent, " }\n\n");
} else {
if (!$codeGenerator->IsSVGAnimatedType($interface->type) && !$codeGenerator->IsSVGPathSegType($interface->type)) {
AddIncludesForImplementationTypeInHeader($implType);
}
push(@headerContent, " static $className* create(JSC::Structure* structure, JSDOMGlobalObject* globalObject, Ref<$implType>&& impl)\n");
push(@headerContent, " {\n");
push(@headerContent, " $className* ptr = new (NotNull, JSC::allocateCell<$className>(globalObject->vm().heap)) $className(structure, *globalObject, WTFMove(impl));\n");
push(@headerContent, " ptr->finishCreation(globalObject->vm());\n");
push(@headerContent, " return ptr;\n");
push(@headerContent, " }\n\n");
}
push(@headerContent, " static constexpr bool needsDestruction = false;\n\n") if IsDOMGlobalObject($interface);
$structureFlags{"JSC::HasStaticPropertyTable"} = 1 if InstancePropertyCount($interface) > 0;
$structureFlags{"JSC::NewImpurePropertyFiresWatchpoints"} = 1 if $interface->extendedAttributes->{NewImpurePropertyFiresWatchpoints};
$structureFlags{"JSC::IsImmutablePrototypeExoticObject"} = 1 if $interface->extendedAttributes->{IsImmutablePrototypeExoticObject};
$structureFlags{"JSC::MasqueradesAsUndefined"} = 1 if $interface->extendedAttributes->{MasqueradesAsUndefined};
$structureFlags{"JSC::ImplementsHasInstance | JSC::ImplementsDefaultHasInstance"} = 1 if $interfaceName eq "DOMWindow";
# Prototype
unless (ShouldUseGlobalObjectPrototype($interface)) {
push(@headerContent, " static JSC::JSObject* createPrototype(JSC::VM&, JSDOMGlobalObject&);\n");
push(@headerContent, " static JSC::JSObject* prototype(JSC::VM&, JSDOMGlobalObject&);\n");
}
# JSValue to implementation type
if (ShouldGenerateToWrapped($hasParent, $interface)) {
# FIXME: Add extended attribute for this.
my @toWrappedArguments = ();
push(@toWrappedArguments, "JSC::VM&");
push(@toWrappedArguments, "JSC::ExecState&") if $interface->type->name eq "XPathNSResolver";
push(@toWrappedArguments, "JSC::JSValue");
my $toWrappedType = $interface->type->name eq "XPathNSResolver" ? "RefPtr<${implType}>" : "${implType}*";
my $export = "";
$export = "WEBCORE_EXPORT " if $interface->extendedAttributes->{ExportToWrappedFunction};
push(@headerContent, " static ${export}${toWrappedType} toWrapped(" . join(", ", @toWrappedArguments) . ");\n");
}
$headerTrailingIncludes{"${className}Custom.h"} = 1 if $interface->extendedAttributes->{JSCustomHeader};
my $namedGetterOperation = GetNamedGetterOperation($interface);
my $indexedGetterOperation = GetIndexedGetterOperation($interface);
# FIXME: Why doesn't this also include Indexed Getters and [CustomGetOwnPropertySlot]
if ($namedGetterOperation) {
if ($codeGenerator->InheritsExtendedAttribute($interface, "OverrideBuiltins")) {
$structureFlags{"JSC::GetOwnPropertySlotIsImpure"} = 1;
} else {
$structureFlags{"JSC::GetOwnPropertySlotIsImpureForPropertyAbsence"} = 1;
}
}
# ClassInfo MethodTable declarations.
if (InstanceOverridesGetOwnPropertySlot($interface)) {
push(@headerContent, " static bool getOwnPropertySlot(JSC::JSObject*, JSC::ExecState*, JSC::PropertyName, JSC::PropertySlot&);\n");
$structureFlags{"JSC::OverridesGetOwnPropertySlot"} = 1;
push(@headerContent, " static bool getOwnPropertySlotByIndex(JSC::JSObject*, JSC::ExecState*, unsigned propertyName, JSC::PropertySlot&);\n");
$structureFlags{"JSC::InterceptsGetOwnPropertySlotByIndexEvenWhenLengthIsNotZero"} = 1;
}
if ($interface->extendedAttributes->{CheckSecurity}) {
push(@headerContent, " static void doPutPropertySecurityCheck(JSC::JSObject*, JSC::ExecState*, JSC::PropertyName, JSC::PutPropertySlot&);\n");
$structureFlags{"JSC::HasPutPropertySecurityCheck"} = 1;
}
if (InstanceOverridesGetOwnPropertyNames($interface)) {
push(@headerContent, " static void getOwnPropertyNames(JSC::JSObject*, JSC::ExecState*, JSC::PropertyNameArray&, JSC::EnumerationMode = JSC::EnumerationMode());\n");
$structureFlags{"JSC::OverridesGetPropertyNames"} = 1;
}
if (InstanceOverridesPut($interface)) {
push(@headerContent, " static bool put(JSC::JSCell*, JSC::ExecState*, JSC::PropertyName, JSC::JSValue, JSC::PutPropertySlot&);\n");
push(@headerContent, " static bool putByIndex(JSC::JSCell*, JSC::ExecState*, unsigned propertyName, JSC::JSValue, bool shouldThrow);\n");
}
if (InstanceOverridesDefineOwnProperty($interface)) {
push(@headerContent, " static bool defineOwnProperty(JSC::JSObject*, JSC::ExecState*, JSC::PropertyName, const JSC::PropertyDescriptor&, bool shouldThrow);\n");
}
if (InstanceOverridesDeleteProperty($interface)) {
push(@headerContent, " static bool deleteProperty(JSC::JSCell*, JSC::ExecState*, JSC::PropertyName);\n");
push(@headerContent, " static bool deletePropertyByIndex(JSC::JSCell*, JSC::ExecState*, unsigned);\n");
}
if (InstanceOverridesGetCallData($interface)) {
push(@headerContent, " static JSC::CallType getCallData(JSC::JSCell*, JSC::CallData&);\n\n");
$headerIncludes{"<JavaScriptCore/CallData.h>"} = 1;
$structureFlags{"JSC::OverridesGetCallData"} = 1;
}
if ($interface->extendedAttributes->{CustomGetPrototype}) {
push(@headerContent, " static JSC::JSValue getPrototype(JSC::JSObject*, JSC::ExecState*);\n");
}
if ($interface->extendedAttributes->{CustomToStringName}) {
push(@headerContent, " static String toStringName(const JSC::JSObject*, JSC::ExecState*);\n");
}
if ($interface->extendedAttributes->{CustomPreventExtensions}) {
push(@headerContent, " static bool preventExtensions(JSC::JSObject*, JSC::ExecState*);\n");
}
if (InstanceNeedsEstimatedSize($interface)) {
push(@headerContent, " static size_t estimatedSize(JSCell*, JSC::VM&);\n");
}
if (!$hasParent) {
push(@headerContent, " static void destroy(JSC::JSCell*);\n");
}
# Class info
if ($interfaceName eq "Node") {
push(@headerContent, "\n");
push(@headerContent, "protected:\n");
push(@headerContent, " static const JSC::ClassInfo s_info;\n");
push(@headerContent, "public:\n");
push(@headerContent, " static constexpr const JSC::ClassInfo* info() { return &s_info; }\n\n");
} else {
push(@headerContent, "\n");
push(@headerContent, " DECLARE_INFO;\n\n");
}
# Structure ID
push(@headerContent, " static JSC::Structure* createStructure(JSC::VM& vm, JSC::JSGlobalObject* globalObject, JSC::JSValue prototype)\n");
push(@headerContent, " {\n");
if (IsDOMGlobalObject($interface)) {
push(@headerContent, " return JSC::Structure::create(vm, globalObject, prototype, JSC::TypeInfo(JSC::GlobalObjectType, StructureFlags), info());\n");
} elsif ($codeGenerator->InheritsInterface($interface, "Node")) {
my $type = GetJSTypeForNode($interface);
push(@headerContent, " return JSC::Structure::create(vm, globalObject, prototype, JSC::TypeInfo(JSC::JSType($type), StructureFlags), info());\n");
} elsif ($codeGenerator->InheritsInterface($interface, "Event")) {
push(@headerContent, " return JSC::Structure::create(vm, globalObject, prototype, JSC::TypeInfo(JSC::JSType(JSEventType), StructureFlags), info());\n");
} else {
push(@headerContent, " return JSC::Structure::create(vm, globalObject, prototype, JSC::TypeInfo(JSC::ObjectType, StructureFlags), info());\n");
}
push(@headerContent, " }\n\n");
# Custom pushEventHandlerScope function
if ($interface->extendedAttributes->{CustomPushEventHandlerScope}) {
push(@headerContent, " JSC::JSScope* pushEventHandlerScope(JSC::ExecState*, JSC::JSScope*) const;\n\n");
}
# Constructor object getter
unless ($interface->extendedAttributes->{NoInterfaceObject}) {
push(@headerContent, " static JSC::JSValue getConstructor(JSC::VM&, const JSC::JSGlobalObject*);\n");
push(@headerContent, " static JSC::JSValue getNamedConstructor(JSC::VM&, JSC::JSGlobalObject*);\n") if $interface->extendedAttributes->{NamedConstructor};
}
# Serializer function.
if ($interface->serializable) {
push(@headerContent, " static JSC::JSObject* serialize(JSC::ExecState&, ${className}& thisObject, JSDOMGlobalObject&, JSC::ThrowScope&);\n");
}
my $numCustomOperations = 0;
my $numCustomAttributes = 0;
my $hasForwardDeclaringOperations = 0;
my $hasForwardDeclaringAttributes = 0;
my $hasDOMJITAttributes = 0;
# Attribute and function enums
if ($numAttributes > 0) {
foreach my $attribute (@{$interface->attributes}) {
$numCustomAttributes++ if HasCustomGetter($attribute);
$numCustomAttributes++ if HasCustomSetter($attribute);
if ($attribute->extendedAttributes->{CachedAttribute}) {
my $conditionalString = $codeGenerator->GenerateConditionalString($attribute);
push(@headerContent, "#if ${conditionalString}\n") if $conditionalString;
push(@headerContent, " mutable JSC::WriteBarrier<JSC::Unknown> m_" . $attribute->name . ";\n");
$numCachedAttributes++;
push(@headerContent, "#endif\n") if $conditionalString;
}
$hasDOMJITAttributes = 1 if $attribute->extendedAttributes->{DOMJIT};
$hasForwardDeclaringAttributes = 1 if $attribute->extendedAttributes->{ForwardDeclareInHeader};
}
}
# visit function
if ($needsVisitChildren) {
push(@headerContent, " static void visitChildren(JSCell*, JSC::SlotVisitor&);\n");
push(@headerContent, " void visitAdditionalChildren(JSC::SlotVisitor&);\n") if $interface->extendedAttributes->{JSCustomMarkFunction};
push(@headerContent, "\n");
if ($interface->extendedAttributes->{JSCustomMarkFunction}) {
# We assume that the logic in visitAdditionalChildren is highly volatile, and during a
# concurrent GC or in between eden GCs something may happen that would lead to this
# logic behaving differently. Since this could mark objects or add opaque roots, this
# means that after any increment of mutator resumption in a concurrent GC and at least
# once during any eden GC we need to re-execute visitAdditionalChildren on any objects
# that we had executed it on before. We do this using the DOM's own MarkingConstraint,
# which will call visitOutputConstraints on all objects in the DOM's own
# outputConstraintSubspace. visitOutputConstraints is the name JSC uses for the method
# that the GC calls to ask an object is it would like to mark anything else after the
# program resumed since the last call to visitChildren or visitOutputConstraints. Since
# this just calls visitAdditionalChildren, you usually don't have to worry about this.
push(@headerContent, " static void visitOutputConstraints(JSCell*, JSC::SlotVisitor&);\n");
my $subspaceFunc = IsDOMGlobalObject($interface) ? "globalObjectOutputConstraintSubspaceFor" : "outputConstraintSubspaceFor";
push(@headerContent, " template<typename, JSC::SubspaceAccess> static JSC::CompleteSubspace* subspaceFor(JSC::VM& vm) { return $subspaceFunc(vm); }\n");
}
}
if (NeedsImplementationClass($interface)) {
push(@headerContent, " static void analyzeHeap(JSCell*, JSC::HeapAnalyzer&);\n");
}
if ($numCustomAttributes > 0) {
push(@headerContent, "\n // Custom attributes\n");
foreach my $attribute (@{$interface->attributes}) {
my $conditionalString = $codeGenerator->GenerateConditionalString($attribute);
if (HasCustomGetter($attribute)) {
push(@headerContent, "#if ${conditionalString}\n") if $conditionalString;
my $methodName = $codeGenerator->WK_lcfirst($attribute->name);
push(@headerContent, " JSC::JSValue " . $methodName . "(JSC::ExecState&) const;\n");
push(@headerContent, "#endif\n") if $conditionalString;
}
if (HasCustomSetter($attribute) && !IsReadonly($attribute)) {
push(@headerContent, "#if ${conditionalString}\n") if $conditionalString;
push(@headerContent, " void set" . $codeGenerator->WK_ucfirst($attribute->name) . "(JSC::ExecState&, JSC::JSValue);\n");
push(@headerContent, "#endif\n") if $conditionalString;
}
}
}
foreach my $operation (@{$interface->operations}) {
$numCustomOperations++ if HasCustomMethod($operation);
$hasForwardDeclaringOperations = 1 if $operation->extendedAttributes->{ForwardDeclareInHeader};
}
if ($numCustomOperations > 0) {
my $inAppleCopyright = 0;
push(@headerContent, "\n // Custom functions\n");
foreach my $operation (@{$interface->operations}) {
next unless HasCustomMethod($operation);
next if $operation->{overloads} && $operation->{overloadIndex} != 1;
if ($operation->extendedAttributes->{AppleCopyright}) {
if (!$inAppleCopyright) {
push(@headerContent, $beginAppleCopyrightForHeaderFiles);
$inAppleCopyright = 1;
}
} elsif ($inAppleCopyright) {
push(@headerContent, $endAppleCopyright);
$inAppleCopyright = 0;
}
my $conditionalString = $codeGenerator->GenerateConditionalString($operation);
push(@headerContent, "#if ${conditionalString}\n") if $conditionalString;
my $functionImplementationName = $operation->extendedAttributes->{ImplementedAs} || $codeGenerator->WK_lcfirst($operation->name);
my @functionArguments = ();
push(@functionArguments, "JSC::ExecState&");
push(@functionArguments, "Ref<DeferredPromise>&&") if $codeGenerator->IsPromiseType($operation->type) && !$operation->extendedAttributes->{ReturnsOwnPromise};
push(@headerContent, " " . ($operation->isStatic ? "static " : "") . "JSC::JSValue " . $functionImplementationName . "(" . join(", ", @functionArguments) . ");\n");
push(@headerContent, "#endif\n") if $conditionalString;
}
push(@headerContent, $endAppleCopyright) if $inAppleCopyright;
}
if (NeedsImplementationClass($interface)) {
if ($hasParent) {
push(@headerContent, " $interfaceName& wrapped() const\n");
push(@headerContent, " {\n");
push(@headerContent, " return static_cast<$interfaceName&>(Base::wrapped());\n");
push(@headerContent, " }\n");
}
}
# structure flags
if (%structureFlags) {
push(@headerContent, "public:\n");
push(@headerContent, " static constexpr unsigned StructureFlags = Base::StructureFlags");
foreach my $structureFlag (sort (keys %structureFlags)) {
push(@headerContent, " | " . $structureFlag);
}
push(@headerContent, ";\n");
}
push(@headerContent, "protected:\n");
# Constructor
if ($interfaceName eq "DOMWindow" || $interfaceName eq "RemoteDOMWindow") {
push(@headerContent, " $className(JSC::VM&, JSC::Structure*, Ref<$implType>&&, JSWindowProxy*);\n");
} elsif ($codeGenerator->InheritsInterface($interface, "WorkerGlobalScope") || $codeGenerator->InheritsInterface($interface, "WorkletGlobalScope")) {
push(@headerContent, " $className(JSC::VM&, JSC::Structure*, Ref<$implType>&&);\n");
} elsif (!NeedsImplementationClass($interface)) {
push(@headerContent, " $className(JSC::Structure*, JSDOMGlobalObject&);\n\n");
} else {
push(@headerContent, " $className(JSC::Structure*, JSDOMGlobalObject&, Ref<$implType>&&);\n\n");
}
if ($interfaceName eq "DOMWindow" || $interfaceName eq "RemoteDOMWindow") {
push(@headerContent, " void finishCreation(JSC::VM&, JSWindowProxy*);\n");
} elsif ($codeGenerator->InheritsInterface($interface, "WorkerGlobalScope") || $codeGenerator->InheritsInterface($interface, "WorkletGlobalScope")) {
push(@headerContent, " void finishCreation(JSC::VM&, JSC::JSProxy*);\n");
} else {
push(@headerContent, " void finishCreation(JSC::VM&);\n");
}
push(@headerContent, "};\n\n");
if (ShouldGenerateWrapperOwnerCode($hasParent, $interface)) {
if ($interfaceName ne "Node" && $codeGenerator->InheritsInterface($interface, "Node")) {
$headerIncludes{"JSNode.h"} = 1;
push(@headerContent, "class JS${interfaceName}Owner : public JSNodeOwner {\n");
} else {
push(@headerContent, "class JS${interfaceName}Owner : public JSC::WeakHandleOwner {\n");
}
$headerIncludes{"<wtf/NeverDestroyed.h>"} = 1;
push(@headerContent, "public:\n");
push(@headerContent, " virtual bool isReachableFromOpaqueRoots(JSC::Handle<JSC::Unknown>, void* context, JSC::SlotVisitor&, const char**);\n");
push(@headerContent, " virtual void finalize(JSC::Handle<JSC::Unknown>, void* context);\n");
push(@headerContent, "};\n");
push(@headerContent, "\n");
push(@headerContent, "inline JSC::WeakHandleOwner* wrapperOwner(DOMWrapperWorld&, $implType*)\n");
push(@headerContent, "{\n");
push(@headerContent, " static NeverDestroyed<JS${interfaceName}Owner> owner;\n");
push(@headerContent, " return &owner.get();\n");
push(@headerContent, "}\n");
push(@headerContent, "\n");
push(@headerContent, "inline void* wrapperKey($implType* wrappableObject)\n");
push(@headerContent, "{\n");
push(@headerContent, " return wrappableObject;\n");
push(@headerContent, "}\n");
push(@headerContent, "\n");
}
if (ShouldGenerateToJSDeclaration($hasParent, $interface)) {
# Node and NodeList have custom inline implementations which thus cannot be exported.
# FIXME: The special case for Node and NodeList should probably be implemented via an IDL attribute.
if ($implType eq "Node" or $implType eq "NodeList") {
push(@headerContent, "JSC::JSValue toJS(JSC::ExecState*, JSDOMGlobalObject*, $implType&);\n");
} else {
push(@headerContent, $exportMacro."JSC::JSValue toJS(JSC::ExecState*, JSDOMGlobalObject*, $implType&);\n");
}
push(@headerContent, "inline JSC::JSValue toJS(JSC::ExecState* state, JSDOMGlobalObject* globalObject, $implType* impl) { return impl ? toJS(state, globalObject, *impl) : JSC::jsNull(); }\n");
push(@headerContent, "JSC::JSValue toJSNewlyCreated(JSC::ExecState*, JSDOMGlobalObject*, Ref<$implType>&&);\n");
push(@headerContent, "inline JSC::JSValue toJSNewlyCreated(JSC::ExecState* state, JSDOMGlobalObject* globalObject, RefPtr<$implType>&& impl) { return impl ? toJSNewlyCreated(state, globalObject, impl.releaseNonNull()) : JSC::jsNull(); }\n");
}
push(@headerContent, "\n");
GeneratePrototypeDeclaration(\@headerContent, $className, $interface) if HeaderNeedsPrototypeDeclaration($interface);
if ($hasForwardDeclaringOperations) {
my $inAppleCopyright = 0;
push(@headerContent,"// Functions\n\n");
foreach my $operation (@{$interface->operations}) {
next if $operation->{overloadIndex} && $operation->{overloadIndex} > 1;
next unless $operation->extendedAttributes->{ForwardDeclareInHeader};
if ($operation->extendedAttributes->{AppleCopyright}) {
if (!$inAppleCopyright) {
push(@headerContent, $beginAppleCopyrightForHeaderFiles);
$inAppleCopyright = 1;
}
} elsif ($inAppleCopyright) {
push(@headerContent, $endAppleCopyright);
$inAppleCopyright = 0;
}
my $conditionalAttribute = GetConditionalForOperationConsideringOverloads($operation);
my $conditionalString = $conditionalAttribute ? $codeGenerator->GenerateConditionalStringFromAttributeValue($conditionalAttribute) : undef;
push(@headerContent, "#if ${conditionalString}\n") if $conditionalString;
my $functionName = GetFunctionName($interface, $className, $operation);
push(@headerContent, "JSC::EncodedJSValue JSC_HOST_CALL ${functionName}(JSC::JSGlobalObject*, JSC::CallFrame*);\n");
push(@headerContent, "#endif\n") if $conditionalString;
}
push(@headerContent, $endAppleCopyright) if $inAppleCopyright;
push(@headerContent,"\n");
}
if ($hasForwardDeclaringAttributes) {
push(@headerContent,"// Attributes\n\n");
foreach my $attribute (@{$interface->attributes}) {
next unless $attribute->extendedAttributes->{ForwardDeclareInHeader};
my $conditionalString = $codeGenerator->GenerateConditionalString($attribute);
push(@headerContent, "#if ${conditionalString}\n") if $conditionalString;
my $getter = GetAttributeGetterName($interface, $className, $attribute);
push(@headerContent, "JSC::EncodedJSValue ${getter}(JSC::ExecState*, JSC::EncodedJSValue, JSC::PropertyName);\n");
if (!IsReadonly($attribute)) {
my $setter = GetAttributeSetterName($interface, $className, $attribute);
push(@headerContent, "bool ${setter}(JSC::ExecState*, JSC::EncodedJSValue, JSC::EncodedJSValue);\n");
}
push(@headerContent, "#endif\n") if $conditionalString;
}
}
# CheckSubClass Snippet function.
if ($interface->extendedAttributes->{DOMJIT}) {
$headerIncludes{"<JavaScriptCore/Snippet.h>"} = 1;
push(@headerContent, "#if ENABLE(JIT)\n");
push(@headerContent, "Ref<JSC::Snippet> checkSubClassSnippetFor${className}();\n");
push(@headerContent, "#endif\n");
}
if ($hasDOMJITAttributes) {
$headerIncludes{"<JavaScriptCore/DOMJITGetterSetter.h>"} = 1;
push(@headerContent,"// DOM JIT Attributes\n\n");
foreach my $attribute (@{$interface->attributes}) {
next unless $attribute->extendedAttributes->{DOMJIT};
assert("Only DOMJIT=Getter is supported for attributes") unless $codeGenerator->ExtendedAttributeContains($attribute->extendedAttributes->{DOMJIT}, "Getter");
my $interfaceName = $interface->type->name;
my $className = $interfaceName . $codeGenerator->WK_ucfirst($attribute->name);
my $domJITClassName = $className . "Attribute";
push(@headerContent, "#if ENABLE(JIT)\n");
push(@headerContent, "Ref<JSC::DOMJIT::CallDOMGetterSnippet> compile${domJITClassName}();\n");
push(@headerContent, "#endif\n\n");
}
}
if (HasCustomConstructor($interface)) {
push(@headerContent, "// Custom constructor\n");
push(@headerContent, "JSC::EncodedJSValue construct${className}(JSC::JSGlobalObject*, JSC::CallFrame&);\n\n");
}
if (NeedsImplementationClass($interface)) {
my $toWrappedType = $interface->type->name eq "XPathNSResolver" ? "RefPtr<${implType}>" : "${implType}*";
$headerIncludes{"JSDOMWrapper.h"} = 1;
push(@headerContent, "template<> struct JSDOMWrapperConverterTraits<${implType}> {\n");
push(@headerContent, " using WrapperClass = ${className};\n");
push(@headerContent, " using ToWrappedReturnType = ${toWrappedType};\n");
push(@headerContent, "};\n");
}
push(@headerContent, GenerateEnumerationsHeaderContent($interface, $enumerations));
push(@headerContent, GenerateDictionariesHeaderContent($interface, $dictionaries));
my $conditionalString = $codeGenerator->GenerateConditionalString($interface);
push(@headerContent, "\n} // namespace WebCore\n");
push(@headerContent, "\n#endif // ${conditionalString}\n") if $conditionalString;
if ($interface->extendedAttributes->{AppleCopyright}) {
push(@headerContent, "\n");
push(@headerContent, split("\r", $endAppleCopyright));
}
# - Generate dependencies.
if ($writeDependencies) {
my @ancestors;
$codeGenerator->ForAllParents($interface, sub {
my $currentInterface = shift;
push(@ancestors, $currentInterface->type->name);
}, 0);
for my $dictionary (@$dictionaries) {
my $parentType = $dictionary->parentType;
while (defined($parentType)) {
push(@ancestors, $parentType->name) if $codeGenerator->IsExternalDictionaryType($parentType);
my $parentDictionary = $codeGenerator->GetDictionaryByType($parentType);
assert("Unable to find definition for dictionary named '" . $parentType->name . "'!") unless defined($parentDictionary);
$parentType = $parentDictionary->parentType;
}
}
push(@depsContent, "$className.h : ", join(" ", map { "$_.idl" } @ancestors), "\n");
push(@depsContent, map { "$_.idl :\n" } @ancestors);
}
}
sub GeneratePropertiesHashTable
{
my ($object, $interface, $isInstance, $hashKeys, $hashSpecials, $hashValue1, $hashValue2, $conditionals, $readWriteConditionals, $runtimeEnabledOperations, $runtimeEnabledAttributes) = @_;
# FIXME: These should be functions on $interface.
my $interfaceName = $interface->type->name;
my $className = "JS$interfaceName";
# - Add all properties in a hashtable definition
my $propertyCount = $isInstance ? InstancePropertyCount($interface) : PrototypePropertyCount($interface);
if (!$isInstance && NeedsConstructorProperty($interface)) {
die if !$propertyCount;
push(@$hashKeys, "constructor");
my $getter = "js" . $interfaceName . "Constructor";
push(@$hashValue1, $getter);
my $setter = "setJS" . $interfaceName . "Constructor";
push(@$hashValue2, $setter);
push(@$hashSpecials, "static_cast<unsigned>(JSC::PropertyAttribute::DontEnum)");
}
return 0 if !$propertyCount;
my @attributes = @{$interface->attributes};
push(@attributes, @{$interface->mapLike->attributes}) if $interface->mapLike;
foreach my $attribute (@attributes) {
next if ($attribute->isStatic);
next if AttributeShouldBeOnInstance($interface, $attribute) != $isInstance;
next if ($attribute->extendedAttributes->{PrivateIdentifier} and not $attribute->extendedAttributes->{PublicIdentifier});
# Global objects add RuntimeEnabled attributes after creation so do not add them to the static table.
if ($isInstance && NeedsRuntimeCheck($interface, $attribute)) {
$propertyCount -= 1;
next;
}
my $name = $attribute->name;
push(@$hashKeys, $name);
my $special = GetJSCAttributesForAttribute($interface, $attribute);
push(@$hashSpecials, $special);
if ($attribute->extendedAttributes->{DOMJIT}) {
push(@$hashValue1, "&DOMJITAttributeFor" . $interface->type->name . $codeGenerator->WK_ucfirst($attribute->name));
} else {
my $getter = GetAttributeGetterName($interface, $className, $attribute);
push(@$hashValue1, $getter);
}
if (IsReadonly($attribute)) {
push(@$hashValue2, "0");
} else {
my $setter = GetAttributeSetterName($interface, $className, $attribute);
push(@$hashValue2, $setter);
}
my $conditional = $attribute->extendedAttributes->{Conditional};
$conditionals->{$name} = $conditional if $conditional;
my $readWriteConditional = $attribute->extendedAttributes->{ConditionallyReadWrite};
$readWriteConditionals->{$name} = $readWriteConditional if $readWriteConditional;
if (NeedsRuntimeCheck($interface, $attribute)) {
push(@$runtimeEnabledAttributes, $attribute);
}
}
my @operations = @{$interface->operations};
push(@operations, @{$interface->iterable->operations}) if IsKeyValueIterableInterface($interface);
push(@operations, @{$interface->mapLike->operations}) if $interface->mapLike;
push(@operations, @{$interface->serializable->operations}) if $interface->serializable;
foreach my $operation (@operations) {
next if ($operation->extendedAttributes->{PrivateIdentifier} and not $operation->extendedAttributes->{PublicIdentifier});
next if ($operation->isStatic);
next if $operation->{overloadIndex} && $operation->{overloadIndex} > 1;
next if OperationShouldBeOnInstance($interface, $operation) != $isInstance;
next if $operation->name eq "[Symbol.Iterator]";
# Global objects add RuntimeEnabled operations after creation so do not add them to the static table.
if ($isInstance && NeedsRuntimeCheck($interface, $operation)) {
$propertyCount -= 1;
next;
}
my $name = $operation->name;
push(@$hashKeys, $name);
my $functionName = GetFunctionName($interface, $className, $operation);
push(@$hashValue1, $functionName);
my $functionLength = GetFunctionLength($operation);
if ($operation->extendedAttributes->{DOMJIT}) {
push(@$hashValue2, "&DOMJITSignatureFor" . $interface->type->name . $codeGenerator->WK_ucfirst($operation->name));
} else {
push(@$hashValue2, $functionLength);
}
push(@$hashSpecials, ComputeFunctionSpecial($interface, $operation));
my $conditional = GetConditionalForOperationConsideringOverloads($operation);
$conditionals->{$name} = $conditional if $conditional;
if (NeedsRuntimeCheck($interface, $operation)) {
push(@$runtimeEnabledOperations, $operation);
}
}
return $propertyCount;
}
# This computes an effective overload set for a given operation / constructor,
# which represents the allowable invocations.This set is used as input for
# the Web IDL overload resolution algorithm.
# http://heycam.github.io/webidl/#dfn-effective-overload-set
sub ComputeEffectiveOverloadSet
{
my ($overloads) = @_;
my %allSets;
my $addTuple = sub {
my $tuple = shift;
# The Web IDL specification uses a flat set of tuples but we use a hash where the key is the
# number of parameters and the value is the set of tuples for the given number of parameters.
my $length = scalar(@{@$tuple[1]});
if (!exists($allSets{$length})) {
$allSets{$length} = [ $tuple ];
} else {
push(@{$allSets{$length}}, $tuple);
}
};
my $m = LengthOfLongestOperationParameterList($overloads);
foreach my $overload (@{$overloads}) {
my $n = @{$overload->arguments};
my @t;
my @o;
my $isVariadic = 0;
foreach my $argument (@{$overload->arguments}) {
push(@t, $argument->type);
if ($argument->isOptional) {
push(@o, "optional");
} elsif ($argument->isVariadic) {
push(@o, "variadic");
$isVariadic = 1;
} else {
push(@o, "required");
}
}
&$addTuple([$overload, [@t], [@o]]);
if ($isVariadic) {
my @newT = @t;
my @newO = @o;
for (my $i = $n; $i < $m; $i++) {
push(@newT, $t[-1]);
push(@newO, "variadic");
&$addTuple([$overload, [@newT], [@newO]]);
}
}
for (my $i = $n - 1; $i >= 0; $i--) {
my $argument = @{$overload->arguments}[$i];
last unless ($argument->isOptional || $argument->isVariadic);
pop(@t);
pop(@o);
&$addTuple([$overload, [@t], [@o]]);
}
}
return %allSets;
}
sub IsIDLTypeDistinguishableWithUnionForOverloadResolution
{
my ($type, $unionSubtypes) = @_;
assert("First type should not be a union") if $type->isUnion;
for my $unionSubType (@$unionSubtypes) {
return 0 unless AreTypesDistinguishableForOverloadResolution($type, $unionSubType);
}
return 1;
}
# Determines if two types are distinguishable in the context of overload resolution,
# according to the Web IDL specification:
# http://heycam.github.io/webidl/#dfn-distinguishable
sub AreTypesDistinguishableForOverloadResolution
{
my ($typeA, $typeB) = @_;
my $isCallbackFunctionOrDictionary = sub {
my $type = shift;
return $codeGenerator->IsCallbackFunction($type) || $codeGenerator->IsDictionaryType($type);
};
# Two types are distinguishable for overload resolution if at most one of the two includes a nullable type.
return 0 if $typeA->isNullable && $typeB->isNullable;
# Union types: typeA and typeB are distinguishable if:
# - Both types are either a union type or nullable union type, and each member type of the one is
# distinguishable with each member type of the other.
# - One type is a union type or nullable union type, the other is neither a union type nor a nullable
# union type, and each member type of the first is distinguishable with the second.
if ($typeA->isUnion && $typeB->isUnion) {
for my $unionASubType (@{$typeA->subtypes}) {
return 0 unless IsIDLTypeDistinguishableWithUnionForOverloadResolution($unionASubType, $typeB->subtypes);
}
return 1;
} elsif ($typeA->isUnion) {
return IsIDLTypeDistinguishableWithUnionForOverloadResolution($typeB, $typeA->subtypes);
} elsif ($typeB->isUnion) {
return IsIDLTypeDistinguishableWithUnionForOverloadResolution($typeA, $typeB->subtypes);
}
return 0 if $typeA->name eq $typeB->name;
return 0 if $typeA->name eq "object" or $typeB->name eq "object";
return 0 if $codeGenerator->IsNumericType($typeA) && $codeGenerator->IsNumericType($typeB);
return 0 if $codeGenerator->IsStringOrEnumType($typeA) && $codeGenerator->IsStringOrEnumType($typeB);
return 0 if $codeGenerator->IsDictionaryType($typeA) && $codeGenerator->IsDictionaryType($typeB);
return 0 if $codeGenerator->IsCallbackInterface($typeA) && $codeGenerator->IsCallbackInterface($typeB);
return 0 if &$isCallbackFunctionOrDictionary($typeA) && &$isCallbackFunctionOrDictionary($typeB);
return 0 if $codeGenerator->IsSequenceOrFrozenArrayType($typeA) && $codeGenerator->IsSequenceOrFrozenArrayType($typeB);
# FIXME: return 0 if $typeA and $typeB are both exception types.
return 1;
}
# If there is more than one entry in an effective overload set that has a given type list length,
# then for those entries there must be an index i such that for each pair of entries the types
# at index i are distinguishable. The lowest such index is termed the distinguishing argument index.
# http://heycam.github.io/webidl/#dfn-distinguishing-argument-index
sub GetDistinguishingArgumentIndex
{
my ($operation, $S) = @_;
# FIXME: Consider all the tuples, not just the 2 first ones?
my $firstTupleTypes = @{@{$S}[0]}[1];
my $secondTupleTypes = @{@{$S}[1]}[1];
for (my $index = 0; $index < scalar(@$firstTupleTypes); $index++) {
return $index if AreTypesDistinguishableForOverloadResolution(@{$firstTupleTypes}[$index], @{$secondTupleTypes}[$index]);
}
die "Undistinguishable overloads for operation " . $operation->name . " with length: " . scalar(@$firstTupleTypes);
}
sub GetOverloadThatMatches
{
my ($S, $parameterIndex, $matches) = @_;
for my $tuple (@{$S}) {
my $type = @{@{$tuple}[1]}[$parameterIndex];
my $optionality = @{@{$tuple}[2]}[$parameterIndex];
if ($type->isUnion) {
for my $subtype (GetFlattenedMemberTypes($type)) {
return @{$tuple}[0] if $matches->($subtype, $optionality);
}
} else {
return @{$tuple}[0] if $matches->($type, $optionality);
}
}
}
sub GetOverloadThatMatchesIgnoringUnionSubtypes
{
my ($S, $parameterIndex, $matches) = @_;
for my $tuple (@{$S}) {
my $type = @{@{$tuple}[1]}[$parameterIndex];
my $optionality = @{@{$tuple}[2]}[$parameterIndex];
return @{$tuple}[0] if $matches->($type, $optionality);
}
}
sub GetConditionalForOperationConsideringOverloads
{
my $operation = shift;
return $operation->extendedAttributes->{Conditional} unless $operation->{overloads};
my %conditions;
foreach my $overload (@{$operation->{overloads}}) {
my $conditional = $overload->extendedAttributes->{Conditional};
return unless $conditional;
$conditions{$conditional} = 1;
}
return join("|", keys %conditions);
}
# Implements the overload resolution algorithm, as defined in the Web IDL specification:
# http://heycam.github.io/webidl/#es-overloads
sub GenerateOverloadDispatcher
{
my ($operation, $interface, $overloadFunctionPrefix, $overloadFunctionSuffix, $parametersToForward) = @_;
my %allSets = ComputeEffectiveOverloadSet($operation->{overloads});
my $generateOverloadCallIfNecessary = sub {
my ($overload, $condition, $include) = @_;
return unless $overload;
my $conditionalString = $codeGenerator->GenerateConditionalString($overload);
push(@implContent, "#if ${conditionalString}\n") if $conditionalString;
push(@implContent, " if ($condition)\n ") if $condition;
push(@implContent, " return " . $overloadFunctionPrefix . $overload->{overloadIndex} . $overloadFunctionSuffix . "(${parametersToForward});\n");
push(@implContent, "#endif\n") if $conditionalString;
AddToImplIncludes($include, $overload->extendedAttributes->{Conditional}) if $include;
};
my $isOptionalParameter = sub {
my ($type, $optionality) = @_;
return $optionality eq "optional";
};
my $isDictionaryOrRecordParameter = sub {
my ($type, $optionality) = @_;
return $codeGenerator->IsDictionaryType($type) || $codeGenerator->IsRecordType($type);
};
my $isNullableOrDictionaryOrRecordOrUnionContainingOne = sub {
my ($type, $optionality) = @_;
return 1 if $type->isNullable;
if ($type->isUnion) {
for my $subtype (GetFlattenedMemberTypes($type)) {
return 1 if $type->isNullable || &$isDictionaryOrRecordParameter($subtype, $optionality);
}
return 0;
} else {
return &$isDictionaryOrRecordParameter($type, $optionality);
}
};
my $isObjectOrErrorParameter = sub {
my ($type, $optionality) = @_;
return $type->name eq "object" || $type->name eq "Error";
};
my $isObjectOrErrorOrDOMExceptionParameter = sub {
my ($type, $optionality) = @_;
return 1 if &$isObjectOrErrorParameter($type, $optionality);
return $type->name eq "DOMException";
};
my $isObjectOrCallbackFunctionParameter = sub {
my ($type, $optionality) = @_;
return $type->name eq "object" || $codeGenerator->IsCallbackFunction($type);
};
my $isSequenceOrFrozenArrayParameter = sub {
my ($type, $optionality) = @_;
return $codeGenerator->IsSequenceOrFrozenArrayType($type);
};
my $isDictionaryOrRecordOrObjectOrCallbackInterfaceParameter = sub {
my ($type, $optionality) = @_;
return 1 if &$isDictionaryOrRecordParameter($type, $optionality);
return 1 if $type->name eq "object";
return 1 if $codeGenerator->IsCallbackInterface($type) && !$codeGenerator->IsCallbackFunction($type);
return 0;
};
my $isBooleanParameter = sub {
my ($type, $optionality) = @_;
return $type->name eq "boolean";
};
my $isNumericParameter = sub {
my ($type, $optionality) = @_;
return $codeGenerator->IsNumericType($type);
};
my $isStringOrEnumParameter = sub {
my ($type, $optionality) = @_;
return $codeGenerator->IsStringOrEnumType($type);
};
my $isAnyParameter = sub {
my ($type, $optionality) = @_;
return $type->name eq "any";
};
my $maxArgCount = LengthOfLongestOperationParameterList($operation->{overloads});
push(@implContent, " size_t argsCount = std::min<size_t>(${maxArgCount}, state->argumentCount());\n");
for my $length ( sort keys %allSets ) {
push(@implContent, " if (argsCount == ${length}) {\n");
my $S = $allSets{$length};
if (scalar(@$S) > 1) {
my $d = GetDistinguishingArgumentIndex($operation, $S);
push(@implContent, " JSValue distinguishingArg = state->uncheckedArgument($d);\n");
my $overload = GetOverloadThatMatchesIgnoringUnionSubtypes($S, $d, \&$isOptionalParameter);
&$generateOverloadCallIfNecessary($overload, "distinguishingArg.isUndefined()");
$overload = GetOverloadThatMatchesIgnoringUnionSubtypes($S, $d, \&$isNullableOrDictionaryOrRecordOrUnionContainingOne);
&$generateOverloadCallIfNecessary($overload, "distinguishingArg.isUndefinedOrNull()");
for my $tuple (@{$S}) {
my $overload = @{$tuple}[0];
my $type = @{@{$tuple}[1]}[$d];
my @subtypes = $type->isUnion ? GetFlattenedMemberTypes($type) : ( $type );
for my $subtype (@subtypes) {
if ($codeGenerator->IsWrapperType($subtype) || $codeGenerator->IsBufferSourceType($subtype)) {
if ($subtype->name eq "DOMWindow") {
AddToImplIncludes("JSWindowProxy.h");
&$generateOverloadCallIfNecessary($overload, "distinguishingArg.isObject() && (asObject(distinguishingArg)->inherits<JSWindowProxy>(vm) || asObject(distinguishingArg)->inherits<JSDOMWindow>(vm))");
} elsif ($subtype->name eq "RemoteDOMWindow") {
AddToImplIncludes("JSWindowProxy.h");
&$generateOverloadCallIfNecessary($overload, "distinguishingArg.isObject() && (asObject(distinguishingArg)->inherits<JSWindowProxy>(vm) || asObject(distinguishingArg)->inherits<JSRemoteDOMWindow>(vm))");
} else {
&$generateOverloadCallIfNecessary($overload, "distinguishingArg.isObject() && asObject(distinguishingArg)->inherits<JS" . $subtype->name . ">(vm)");
}
}
}
}
$overload = GetOverloadThatMatches($S, $d, \&$isObjectOrErrorOrDOMExceptionParameter);
&$generateOverloadCallIfNecessary($overload, "distinguishingArg.isObject() && asObject(distinguishingArg)->inherits<JSDOMException>(vm)");
$overload = GetOverloadThatMatches($S, $d, \&$isObjectOrErrorParameter);
&$generateOverloadCallIfNecessary($overload, "distinguishingArg.isObject() && asObject(distinguishingArg)->type() == ErrorInstanceType");
$overload = GetOverloadThatMatches($S, $d, \&$isObjectOrCallbackFunctionParameter);
&$generateOverloadCallIfNecessary($overload, "distinguishingArg.isFunction(vm)");
# FIXME: Avoid invoking GetMethod(object, Symbol.iterator) again in convert<IDLSequence<T>>(...).
$overload = GetOverloadThatMatches($S, $d, \&$isSequenceOrFrozenArrayParameter);
&$generateOverloadCallIfNecessary($overload, "hasIteratorMethod(*state, distinguishingArg)", "<JavaScriptCore/IteratorOperations.h>");
$overload = GetOverloadThatMatches($S, $d, \&$isDictionaryOrRecordOrObjectOrCallbackInterfaceParameter);
&$generateOverloadCallIfNecessary($overload, "distinguishingArg.isObject()");
my $booleanOverload = GetOverloadThatMatches($S, $d, \&$isBooleanParameter);
&$generateOverloadCallIfNecessary($booleanOverload, "distinguishingArg.isBoolean()");
my $numericOverload = GetOverloadThatMatches($S, $d, \&$isNumericParameter);
&$generateOverloadCallIfNecessary($numericOverload, "distinguishingArg.isNumber()");
# Fallbacks.
$overload = GetOverloadThatMatches($S, $d, \&$isStringOrEnumParameter);
if ($overload) {
&$generateOverloadCallIfNecessary($overload);
} elsif ($numericOverload) {
&$generateOverloadCallIfNecessary($numericOverload);
} elsif ($booleanOverload) {
&$generateOverloadCallIfNecessary($booleanOverload);
} else {
$overload = GetOverloadThatMatches($S, $d, \&$isAnyParameter);
&$generateOverloadCallIfNecessary($overload);
}
} else {
# Only 1 overload with this number of parameters.
my $overload = @{@{$S}[0]}[0];
&$generateOverloadCallIfNecessary($overload);
}
push(@implContent, <<END);
}
END
}
my $minArgCount = GetFunctionLength($operation);
if ($minArgCount > 0) {
push(@implContent, " return argsCount < $minArgCount ? throwVMError(state, throwScope, createNotEnoughArgumentsError(state)) : throwVMTypeError(state, throwScope);\n")
} else {
push(@implContent, " return throwVMTypeError(state, throwScope);\n")
}
}
# As per Web IDL specification, the length of a function Object is its number of mandatory parameters.
sub GetFunctionLength
{
my $operation = shift;
my $getOverloadLength = sub {
my $operation = shift;
my $length = 0;
foreach my $argument (@{$operation->arguments}) {
last if $argument->isOptional || $argument->isVariadic;
$length++;
}
return $length;
};
my $length = &$getOverloadLength($operation);
foreach my $overload (@{$operation->{overloads}}) {
my $newLength = &$getOverloadLength($overload);
$length = $newLength if $newLength < $length;
}
return $length;
}
sub LengthOfLongestOperationParameterList
{
my ($overloads) = @_;
my $result = 0;
foreach my $overload (@{$overloads}) {
my @arguments = @{$overload->arguments};
$result = @arguments if $result < @arguments;
}
return $result;
}
# See http://refspecs.linux-foundation.org/cxxabi-1.83.html.
sub GetGnuVTableRefForInterface
{
my $interface = shift;
my $vtableName = GetGnuVTableNameForInterface($interface);
if (!$vtableName) {
return "0";
}
my $typename = $interface->type->name;
my $offset = GetGnuVTableOffsetForType($typename);
return "&" . $vtableName . "[" . $offset . "]";
}
sub GetGnuVTableNameForInterface
{
my $interface = shift;
my $typename = $interface->type->name;
my $templatePosition = index($typename, "<");
return "" if $templatePosition != -1;
return "" if GetImplementationLacksVTableForInterface($interface);
return "" if GetSkipVTableValidationForInterface($interface);
return "_ZTV" . GetGnuMangledNameForInterface($interface);
}
sub GetGnuMangledNameForInterface
{
my $interface = shift;
my $typename = $interface->type->name;
my $templatePosition = index($typename, "<");
if ($templatePosition != -1) {
return "";
}
my $mangledType = length($typename) . $typename;
my $namespace = "WebCore";
my $mangledNamespace = "N" . length($namespace) . $namespace;
return $mangledNamespace . $mangledType . "E";
}
sub GetGnuVTableOffsetForType
{
my $typename = shift;
if ($typename eq "ApplePaySession"
|| $typename eq "SVGAElement"
|| $typename eq "SVGCircleElement"
|| $typename eq "SVGClipPathElement"
|| $typename eq "SVGDefsElement"
|| $typename eq "SVGEllipseElement"
|| $typename eq "SVGForeignObjectElement"
|| $typename eq "SVGGElement"
|| $typename eq "SVGImageElement"
|| $typename eq "SVGLineElement"
|| $typename eq "SVGPathElement"
|| $typename eq "SVGPolyElement"
|| $typename eq "SVGPolygonElement"
|| $typename eq "SVGPolylineElement"
|| $typename eq "SVGRectElement"
|| $typename eq "SVGSVGElement"
|| $typename eq "SVGGeometryElement"
|| $typename eq "SVGGraphicsElement"
|| $typename eq "SVGSwitchElement"
|| $typename eq "SVGTextElement"
|| $typename eq "SVGUseElement") {
return "3";
}
return "2";
}
# See http://en.wikipedia.org/wiki/Microsoft_Visual_C%2B%2B_Name_Mangling.
sub GetWinVTableRefForInterface
{
my $interface = shift;
my $vtableName = GetWinVTableNameForInterface($interface);
return 0 if !$vtableName;
return "__identifier(\"" . $vtableName . "\")";
}
sub GetWinVTableNameForInterface
{
my $interface = shift;
my $typename = $interface->type->name;
my $templatePosition = index($typename, "<");
return "" if $templatePosition != -1;
return "" if GetImplementationLacksVTableForInterface($interface);
return "" if GetSkipVTableValidationForInterface($interface);
return "??_7" . GetWinMangledNameForInterface($interface) . "6B@";
}
sub GetWinMangledNameForInterface
{
my $interface = shift;
my $typename = $interface->type->name;
my $namespace = "WebCore";
return $typename . "@" . $namespace . "@@";
}
sub GetImplementationLacksVTableForInterface
{
my $interface = shift;
return $interface->extendedAttributes->{ImplementationLacksVTable};
}
sub GetSkipVTableValidationForInterface
{
my $interface = shift;
return $interface->extendedAttributes->{SkipVTableValidation};
}
# URL becomes url, but SetURL becomes setURL.
sub ToMethodName
{
my $param = shift;
my $ret = lcfirst($param);
$ret =~ s/cSS/css/ if $ret =~ /^cSS/;
$ret =~ s/dOM/dom/ if $ret =~ /^dOM/;
$ret =~ s/hTML/html/ if $ret =~ /^hTML/;
$ret =~ s/jS/js/ if $ret =~ /^jS/;
$ret =~ s/uRL/url/ if $ret =~ /^uRL/;
$ret =~ s/xML/xml/ if $ret =~ /^xML/;
$ret =~ s/xSLT/xslt/ if $ret =~ /^xSLT/;
# For HTML5 FileSystem API Flags attributes.
# (create is widely used to instantiate an object and must be avoided.)
$ret =~ s/^create/isCreate/ if $ret =~ /^create$/;
$ret =~ s/^exclusive/isExclusive/ if $ret =~ /^exclusive$/;
return $ret;
}
sub GenerateRuntimeEnableConditionalStringForExposed
{
my ($interface, $context, $conjuncts, $globalObjectIsParam) = @_;
assert("Must specify value for Exposed.") if $context->extendedAttributes->{Exposed} eq "VALUE_IS_MISSING";
AddToImplIncludes("ScriptExecutionContext.h");
my $exposed = $context->extendedAttributes->{Exposed};
if (ref($exposed) eq 'ARRAY') {
if (scalar(@$exposed) > 1) {
return;
}
$exposed = @$exposed[0];
}
my $globalObjectPtr = $globalObjectIsParam ? "&globalObject" : "globalObject()";
if ($exposed eq "Window") {
push(@$conjuncts, "jsCast<JSDOMGlobalObject*>(" . $globalObjectPtr . ")->scriptExecutionContext()->isDocument()");
} elsif ($exposed eq "Worker") {
push(@$conjuncts, "jsCast<JSDOMGlobalObject*>(" . $globalObjectPtr . ")->scriptExecutionContext()->isWorkerGlobalScope()");
} elsif ($exposed eq "Worklet") {
push(@$conjuncts, "jsCast<JSDOMGlobalObject*>(" . $globalObjectPtr . ")->scriptExecutionContext()->isWorkletGlobalScope()");
} else {
assert("Unrecognized value '" . Dumper($context->extendedAttributes->{Exposed}) . "' for the Exposed extended attribute on '" . ref($context) . "'.");
}
}
# Returns the conditional string that determines whether a method/attribute is enabled at runtime.
# A method/attribute is enabled at runtime if either its RuntimeEnabledFeatures function returns
# true or its EnabledForWorld function returns true (or both).
# NOTE: Parameter passed in must have an 'extendedAttributes' property.
# (e.g. IDLInterface, IDLAttribute, IDLOperation, IDLIterable, etc.)
sub GenerateRuntimeEnableConditionalString
{
my ($interface, $context, $globalObjectIsParam) = @_;
my @conjuncts;
my $globalObjectPtr = $globalObjectIsParam ? "&globalObject" : "globalObject()";
if ($context->extendedAttributes->{SecureContext}) {
AddToImplIncludes("ScriptExecutionContext.h");
if ($context->extendedAttributes->{ContextHasServiceWorkerScheme}) {
push(@conjuncts, "(jsCast<JSDOMGlobalObject*>(" . $globalObjectPtr . ")->scriptExecutionContext()->isSecureContext()"
. "|| jsCast<JSDOMGlobalObject*>(" . $globalObjectPtr . ")->scriptExecutionContext()->hasServiceWorkerScheme())");
} elsif ($context->extendedAttributes->{ContextAllowsMediaDevices}) {
push(@conjuncts, "(jsCast<JSDOMGlobalObject*>(" . $globalObjectPtr . ")->scriptExecutionContext()->isSecureContext()"
. "|| jsCast<JSDOMGlobalObject*>(" . $globalObjectPtr . ")->scriptExecutionContext()->allowsMediaDevices())");
} else {
push(@conjuncts, "jsCast<JSDOMGlobalObject*>(globalObject())->scriptExecutionContext()->isSecureContext()");
}
} else {
if ($context->extendedAttributes->{ContextHasServiceWorkerScheme}) {
AddToImplIncludes("ScriptExecutionContext.h");
push(@conjuncts, "jsCast<JSDOMGlobalObject*>(" . $globalObjectPtr . ")->scriptExecutionContext()->hasServiceWorkerScheme()");
}
}
if ($context->extendedAttributes->{Exposed}) {
GenerateRuntimeEnableConditionalStringForExposed($interface, $context, \@conjuncts);
}
if ($context->extendedAttributes->{EnabledForWorld}) {
assert("Must specify value for EnabledForWorld.") if $context->extendedAttributes->{EnabledForWorld} eq "VALUE_IS_MISSING";
AddToImplIncludes("DOMWrapperWorld.h");
push(@conjuncts, "worldForDOMObject(*this)." . ToMethodName($context->extendedAttributes->{EnabledForWorld}) . "()");
}
if ($context->extendedAttributes->{EnabledBySetting}) {
assert("Must specify value for EnabledBySetting.") if $context->extendedAttributes->{EnabledBySetting} eq "VALUE_IS_MISSING";
AddToImplIncludes("Document.h");
AddToImplIncludes("Settings.h");
assert("EnabledBySetting can only be used by interfaces only exposed to the Window") if $interface->extendedAttributes->{Exposed} && $interface->extendedAttributes->{Exposed} ne "Window";
my @flags = split(/&/, $context->extendedAttributes->{EnabledBySetting});
foreach my $flag (@flags) {
push(@conjuncts, "downcast<Document>(jsCast<JSDOMGlobalObject*>(" . $globalObjectPtr . ")->scriptExecutionContext())->settings()." . ToMethodName($flag) . "Enabled()");
}
}
if ($context->extendedAttributes->{CustomEnabled}) {
assert("CustomEnabled can only be used by interfaces only exposed to the Window") if $interface->extendedAttributes->{Exposed} && $interface->extendedAttributes->{Exposed} ne "Window";
my $className = "JS" . $interface->type->name;
push(@conjuncts, "${className}" . $codeGenerator->WK_ucfirst($context->name) . "IsEnabled()");
}
if ($context->extendedAttributes->{DisabledByQuirk}) {
assert("Must specify value for DisabledByQuirk.") if $context->extendedAttributes->{DisabledByQuirk} eq "VALUE_IS_MISSING";
AddToImplIncludes("Document.h");
AddToImplIncludes("Quirks.h");
assert("DisabledByQuirk can only be used by interfaces only exposed to the Window") if $interface->extendedAttributes->{Exposed} && $interface->extendedAttributes->{Exposed} ne "Window";
my @flags = split(/&/, $context->extendedAttributes->{DisabledByQuirk});
foreach my $flag (@flags) {
push(@conjuncts, "!downcast<Document>(jsCast<JSDOMGlobalObject*>(" . $globalObjectPtr . ")->scriptExecutionContext())->quirks()." . ToMethodName($flag) . "Quirk()");
}
}
if ($context->extendedAttributes->{EnabledAtRuntime}) {
assert("Must specify value for EnabledAtRuntime.") if $context->extendedAttributes->{EnabledAtRuntime} eq "VALUE_IS_MISSING";
AddToImplIncludes("RuntimeEnabledFeatures.h");
my @flags = split(/&/, $context->extendedAttributes->{EnabledAtRuntime});
foreach my $flag (@flags) {
push(@conjuncts, "RuntimeEnabledFeatures::sharedFeatures()." . ToMethodName($flag) . "Enabled()");
}
}
if ($context->extendedAttributes->{EnabledForContext}) {
assert("Must not specify value for EnabledForContext.") unless $context->extendedAttributes->{EnabledForContext} eq "VALUE_IS_MISSING";
assert("EnabledForContext must be an interface or constructor attribute.") unless $codeGenerator->IsConstructorType($context->type);
my $contextRef = "*jsCast<JSDOMGlobalObject*>(" . $globalObjectPtr . ")->scriptExecutionContext()";
my $name = $context->name;
push(@conjuncts, "${name}::enabledForContext(" . $contextRef . ")");
}
my $result = join(" && ", @conjuncts);
$result = "($result)" if @conjuncts > 1;
return $result;
}
sub GetCastingHelperForThisObject
{
my $interface = shift;
my $interfaceName = $interface->type->name;
return "jsDynamicCast<JS$interfaceName*>";
}
# http://heycam.github.io/webidl/#Unscopable
sub addUnscopableProperties
{
my $interface = shift;
my @unscopables;
foreach my $operationOrAttribute (@{$interface->operations}, @{$interface->attributes}) {
push(@unscopables, $operationOrAttribute->name) if $operationOrAttribute->extendedAttributes->{Unscopable};
}
return if scalar(@unscopables) == 0;
AddToImplIncludes("<JavaScriptCore/ObjectConstructor.h>");
push(@implContent, " JSObject& unscopables = *constructEmptyObject(globalObject()->globalExec(), globalObject()->nullPrototypeObjectStructure());\n");
foreach my $unscopable (@unscopables) {
push(@implContent, " unscopables.putDirect(vm, Identifier::fromString(vm, \"$unscopable\"), jsBoolean(true));\n");
}
push(@implContent, " putDirectWithoutTransition(vm, vm.propertyNames->unscopablesSymbol, &unscopables, JSC::PropertyAttribute::DontEnum | JSC::PropertyAttribute::ReadOnly);\n");
}
sub GetArgumentTypeForFunctionWithoutTypeCheck
{
my ($interface, $type) = @_;
my $IDLType = GetIDLType($interface, $type);
return "DOMJIT::IDLJSArgumentType<${IDLType}>";
}
sub GetArgumentTypeFilter
{
my ($interface, $type) = @_;
my $IDLType = GetIDLType($interface, $type);
return "DOMJIT::IDLArgumentTypeFilter<${IDLType}>::value";
}
sub GetResultTypeFilter
{
my ($interface, $type) = @_;
my $IDLType = GetIDLType($interface, $type);
return "DOMJIT::IDLResultTypeFilter<${IDLType}>::value";
}
sub GetAttributeWithName
{
my ($interface, $attributeName) = @_;
foreach my $attribute (@{$interface->attributes}) {
return $attribute if $attribute->name eq $attributeName;
}
}
# https://heycam.github.io/webidl/#es-iterator
sub InterfaceNeedsIterator
{
my ($interface) = @_;
# FIXME: This should return 1 for setlike once we support it.
return 1 if $interface->mapLike;
return 1 if $interface->iterable;
if (GetIndexedGetterOperation($interface)) {
my $lengthAttribute = GetAttributeWithName($interface, "length");
return 1 if $lengthAttribute and $codeGenerator->IsIntegerType($lengthAttribute->type);
}
return 0;
}
sub GenerateImplementation
{
my ($object, $interface, $enumerations, $dictionaries) = @_;
my $interfaceName = $interface->type->name;
my $className = "JS$interfaceName";
my $hasParent = $interface->parentType || $interface->extendedAttributes->{JSLegacyParent};
my $parentClassName = GetParentClassName($interface);
my $visibleInterfaceName = $codeGenerator->GetVisibleInterfaceName($interface);
my $needsVisitChildren = InstanceNeedsVisitChildren($interface);
my $namedGetterOperation = GetNamedGetterOperation($interface);
my $indexedGetterOperation = GetIndexedGetterOperation($interface);
# - Add default header template
push(@implContentHeader, GenerateImplementationContentHeader($interface));
AddToImplIncludes("<JavaScriptCore/JSCInlines.h>");
AddToImplIncludes("JSDOMBinding.h");
AddToImplIncludes("JSDOMExceptionHandling.h");
AddToImplIncludes("JSDOMWrapperCache.h");
AddToImplIncludes("<wtf/GetPtr.h>");
AddToImplIncludes("<wtf/PointerPreparations.h>");
AddToImplIncludes("<JavaScriptCore/PropertyNameArray.h>") if $indexedGetterOperation;
AddToImplIncludes("JSDOMMapLike.h") if $interface->mapLike;
AddJSBuiltinIncludesIfNeeded($interface);
my $implType = GetImplClassName($interface);
@implContent = ();
push(@implContent, "\n\nnamespace WebCore {\n");
push(@implContent, "using namespace JSC;\n\n");
push(@implContent, GenerateEnumerationsImplementationContent($interface, $enumerations));
push(@implContent, GenerateDictionariesImplementationContent($interface, $dictionaries));
my @operations = @{$interface->operations};
push(@operations, @{$interface->iterable->operations}) if IsKeyValueIterableInterface($interface);
push(@operations, @{$interface->mapLike->operations}) if $interface->mapLike;
push(@operations, @{$interface->serializable->operations}) if $interface->serializable;
my @attributes = @{$interface->attributes};
push(@attributes, @{$interface->mapLike->attributes}) if $interface->mapLike;
my $numConstants = @{$interface->constants};
my $numOperations = @operations;
my $numAttributes = @attributes;
if ($numOperations > 0) {
my $inAppleCopyright = 0;
push(@implContent,"// Functions\n\n");
foreach my $operation (@operations) {
next if $operation->{overloadIndex} && $operation->{overloadIndex} > 1;
next if $operation->extendedAttributes->{ForwardDeclareInHeader};
next if IsJSBuiltin($interface, $operation);
if ($operation->extendedAttributes->{AppleCopyright}) {
if (!$inAppleCopyright) {
push(@implContent, $beginAppleCopyrightForHeaderFiles);
$inAppleCopyright = 1;
}
} elsif ($inAppleCopyright) {
push(@implContent, $endAppleCopyright);
$inAppleCopyright = 0;
}
my $conditionalAttribute = GetConditionalForOperationConsideringOverloads($operation);
my $conditionalString = $conditionalAttribute ? $codeGenerator->GenerateConditionalStringFromAttributeValue($conditionalAttribute) : undef;
push(@implContent, "#if ${conditionalString}\n") if $conditionalString;
my $functionName = GetFunctionName($interface, $className, $operation);
push(@implContent, "JSC::EncodedJSValue JSC_HOST_CALL ${functionName}(JSC::JSGlobalObject*, JSC::CallFrame*);\n");
if ($operation->extendedAttributes->{DOMJIT}) {
$implIncludes{"DOMJITIDLType.h"} = 1;
my $nameOfFunctionWithoutTypeCheck = $codeGenerator->WK_lcfirst($functionName) . "WithoutTypeCheck";
my $functionSignature = "JSC::EncodedJSValue JIT_OPERATION ${nameOfFunctionWithoutTypeCheck}(JSC::ExecState*, $className*";
foreach my $argument (@{$operation->arguments}) {
my $type = $argument->type;
my $argumentType = GetArgumentTypeForFunctionWithoutTypeCheck($interface, $type);
$functionSignature .= ", ${argumentType}";
}
push(@implContent, $functionSignature . ");\n");
}
push(@implContent, "#endif\n") if $conditionalString;
}
push(@implContent, $endAppleCopyright) if $inAppleCopyright;
push(@implContent, "\n");
}
if ($numAttributes > 0 || NeedsConstructorProperty($interface)) {
push(@implContent, "// Attributes\n\n");
if (NeedsConstructorProperty($interface)) {
my $constructorGetter = "js" . $interfaceName . "Constructor";
push(@implContent, "JSC::EncodedJSValue ${constructorGetter}(JSC::ExecState*, JSC::EncodedJSValue, JSC::PropertyName);\n");
my $constructorSetter = "setJS" . $interfaceName . "Constructor";
push(@implContent, "bool ${constructorSetter}(JSC::ExecState*, JSC::EncodedJSValue, JSC::EncodedJSValue);\n");
}
foreach my $attribute (@attributes) {
next if $attribute->extendedAttributes->{ForwardDeclareInHeader};
next if IsJSBuiltin($interface, $attribute);
my $conditionalString = $codeGenerator->GenerateConditionalString($attribute);
push(@implContent, "#if ${conditionalString}\n") if $conditionalString;
my $getter = GetAttributeGetterName($interface, $className, $attribute);
push(@implContent, "JSC::EncodedJSValue ${getter}(JSC::ExecState*, JSC::EncodedJSValue, JSC::PropertyName);\n");
if (!IsReadonly($attribute)) {
my $readWriteConditional = $attribute->extendedAttributes->{ConditionallyReadWrite};
if ($readWriteConditional) {
my $readWriteConditionalString = $codeGenerator->GenerateConditionalStringFromAttributeValue($readWriteConditional);
push(@implContent, "#if ${readWriteConditionalString}\n");
}
my $setter = GetAttributeSetterName($interface, $className, $attribute);
push(@implContent, "bool ${setter}(JSC::ExecState*, JSC::EncodedJSValue, JSC::EncodedJSValue);\n");
push(@implContent, "#endif\n") if $readWriteConditional;
}
push(@implContent, "#endif\n") if $conditionalString;
}
push(@implContent, "\n");
}
if ($numOperations > 0) {
foreach my $operation (@operations) {
next unless $operation->extendedAttributes->{DOMJIT};
$implIncludes{"DOMJITIDLTypeFilter.h"} = 1;
$implIncludes{"DOMJITAbstractHeapRepository.h"} = 1;
my $isOverloaded = $operation->{overloads} && @{$operation->{overloads}} > 1;
die "Overloads is not supported in DOMJIT" if $isOverloaded;
die "Currently ReadDOM value is only allowed" unless $codeGenerator->ExtendedAttributeContains($operation->extendedAttributes->{DOMJIT}, "ReadDOM");
my $interfaceName = $interface->type->name;
my $functionName = GetFunctionName($interface, $className, $operation);
my $nameOfFunctionWithoutTypeCheck = $codeGenerator->WK_lcfirst($functionName) . "WithoutTypeCheck";
my $domJITSignatureName = "DOMJITSignatureFor" . $interface->type->name . $codeGenerator->WK_ucfirst($operation->name);
my $classInfo = "JS" . $interface->type->name . "::info()";
my $resultType = GetResultTypeFilter($interface, $operation->type);
my $domJITSignatureHeader = "static const JSC::DOMJIT::Signature ${domJITSignatureName}(${nameOfFunctionWithoutTypeCheck},";
my $domJITSignatureFooter = "$classInfo, JSC::DOMJIT::Effect::forRead(DOMJIT::AbstractHeapRepository::DOM), ${resultType}";
foreach my $argument (@{$operation->arguments}) {
my $type = $argument->type;
my $argumentType = GetArgumentTypeFilter($interface, $type);
$domJITSignatureFooter .= ", ${argumentType}";
}
$domJITSignatureFooter .= ");";
my $conditionalString = $codeGenerator->GenerateConditionalString($operation);
push(@implContent, "#if ${conditionalString}\n") if $conditionalString;
push(@implContent, "$domJITSignatureHeader $domJITSignatureFooter\n");
push(@implContent, "#endif\n") if $conditionalString;
push(@implContent, "\n");
}
}
if ($numAttributes > 0 || NeedsConstructorProperty($interface)) {
foreach my $attribute (@attributes) {
next unless $attribute->extendedAttributes->{DOMJIT};
assert("Only DOMJIT=Getter is supported for attributes") unless $codeGenerator->ExtendedAttributeContains($attribute->extendedAttributes->{DOMJIT}, "Getter");
my $conditionalString = $codeGenerator->GenerateConditionalString($attribute);
push(@implContent, "#if ${conditionalString}\n\n") if $conditionalString;
AddToImplIncludes("DOMJITIDLTypeFilter.h", $conditionalString);
my $interfaceName = $interface->type->name;
my $generatorName = $interfaceName . $codeGenerator->WK_ucfirst($attribute->name);
my $domJITClassName = $generatorName . "Attribute";
my $getter = GetAttributeGetterName($interface, $generatorName, $attribute);
my $resultType = "JSC::SpecBytecodeTop";
if ($attribute->extendedAttributes->{DOMJIT}) {
$resultType = GetResultTypeFilter($interface, $attribute->type);
}
push(@implContent, "static const JSC::DOMJIT::GetterSetter DOMJITAttributeFor${generatorName} {\n");
push(@implContent, " $getter,\n");
push(@implContent, "#if ENABLE(JIT)\n");
push(@implContent, " &compile${domJITClassName},\n");
push(@implContent, "#else\n");
push(@implContent, " nullptr,\n");
push(@implContent, "#endif\n");
push(@implContent, " $resultType\n");
push(@implContent, "};\n\n");
push(@implContent, "#endif\n\n") if $conditionalString;
}
}
GeneratePrototypeDeclaration(\@implContent, $className, $interface) if !HeaderNeedsPrototypeDeclaration($interface);
GenerateConstructorDeclaration(\@implContent, $className, $interface) if NeedsConstructorProperty($interface);
my @hashKeys = ();
my @hashValue1 = ();
my @hashValue2 = ();
my @hashSpecials = ();
my %conditionals = ();
my %readWriteConditionals = ();
my $hashName = $className . "Table";
my @runtimeEnabledOperations = ();
my @runtimeEnabledAttributes = ();
# Generate hash table for properties on the instance.
my $numInstanceProperties = GeneratePropertiesHashTable($object, $interface, 1, \@hashKeys, \@hashSpecials, \@hashValue1, \@hashValue2, \%conditionals, \%readWriteConditionals, \@runtimeEnabledOperations, \@runtimeEnabledAttributes);
$object->GenerateHashTable($className, $hashName, $numInstanceProperties, \@hashKeys, \@hashSpecials, \@hashValue1, \@hashValue2, \%conditionals, \%readWriteConditionals, 0) if $numInstanceProperties > 0;
# - Add all interface object (aka constructor) properties (constants, static attributes, static operations).
if (NeedsConstructorProperty($interface)) {
my $hashSize = 0;
my $hashName = $className . "ConstructorTable";
my @hashKeys = ();
my @hashValue1 = ();
my @hashValue2 = ();
my @hashSpecials = ();
my %conditionals = ();
my %readWriteConditionals = ();
my $needsConstructorTable = 0;
foreach my $constant (@{$interface->constants}) {
my $name = $constant->name;
push(@hashKeys, $name);
push(@hashValue1, $constant->value);
push(@hashValue2, "0");
push(@hashSpecials, "JSC::PropertyAttribute::DontDelete | JSC::PropertyAttribute::ReadOnly | JSC::PropertyAttribute::ConstantInteger");
my $implementedBy = $constant->extendedAttributes->{ImplementedBy};
$implIncludes{"${implementedBy}.h"} = 1 if $implementedBy;
my $conditional = $constant->extendedAttributes->{Conditional};
$conditionals{$name} = $conditional if $conditional;
$hashSize++;
}
foreach my $attribute (@{$interface->attributes}) {
next unless ($attribute->isStatic);
my $name = $attribute->name;
push(@hashKeys, $name);
my @specials = ();
push(@specials, "JSC::PropertyAttribute::DontDelete") if IsUnforgeable($interface, $attribute);
push(@specials, "JSC::PropertyAttribute::ReadOnly") if IsReadonly($attribute);
push(@specials, "JSC::PropertyAttribute::DOMAttribute") if IsAcceleratedDOMAttribute($interface, $attribute);
push(@specials, "JSC::PropertyAttribute::DOMJITAttribute") if $attribute->extendedAttributes->{DOMJIT};
my $special = "static_cast<unsigned>(" . ((@specials > 0) ? join(" | ", @specials) : "0") . ")";
push(@hashSpecials, $special);
if ($attribute->extendedAttributes->{DOMJIT}) {
push(@hashValue1, "&DOMJITAttributeFor" . $interface->type->name . $codeGenerator->WK_ucfirst($attribute->name));
} else {
my $getter = GetAttributeGetterName($interface, $className, $attribute);
push(@hashValue1, $getter);
}
if (IsReadonly($attribute)) {
push(@hashValue2, "0");
} else {
my $setter = GetAttributeSetterName($interface, $className, $attribute);
push(@hashValue2, $setter);
}
my $conditional = $attribute->extendedAttributes->{Conditional};
$conditionals{$name} = $conditional if $conditional;
my $readWriteConditional = $attribute->extendedAttributes->{ConditionallyReadWrite};
$readWriteConditionals{$name} = $readWriteConditional if $readWriteConditional;
$hashSize++;
}
foreach my $operation (@{$interface->operations}) {
next unless ($operation->isStatic);
next if $operation->{overloadIndex} && $operation->{overloadIndex} > 1;
my $name = $operation->name;
push(@hashKeys, $name);
my $functionName = GetFunctionName($interface, $className, $operation);
push(@hashValue1, $functionName);
my $functionLength = GetFunctionLength($operation);
if ($operation->extendedAttributes->{DOMJIT}) {
push(@hashValue2, "DOMJITFunctionFor" . $interface->type->name . $codeGenerator->WK_ucfirst($operation->name));
} else {
push(@hashValue2, $functionLength);
}
push(@hashSpecials, ComputeFunctionSpecial($interface, $operation));
my $conditional = $operation->extendedAttributes->{Conditional};
$conditionals{$name} = $conditional if $conditional;
$hashSize++;
}
$object->GenerateHashTable($className, $hashName, $hashSize, \@hashKeys, \@hashSpecials, \@hashValue1, \@hashValue2, \%conditionals, \%readWriteConditionals, 1) if $hashSize > 0;
push(@implContent, $codeGenerator->GenerateCompileTimeCheckForEnumsIfNeeded($interface));
my $protoClassName = "${className}Prototype";
GenerateConstructorDefinitions(\@implContent, $className, $protoClassName, $visibleInterfaceName, $interface);
my $namedConstructor = $interface->extendedAttributes->{NamedConstructor};
GenerateConstructorDefinitions(\@implContent, $className, $protoClassName, $namedConstructor, $interface, "GeneratingNamedConstructor") if $namedConstructor;
}
# - Add functions and constants to a hashtable definition
$hashName = $className . "PrototypeTable";
@hashKeys = ();
@hashValue1 = ();
@hashValue2 = ();
@hashSpecials = ();
%conditionals = ();
%readWriteConditionals = ();
@runtimeEnabledOperations = ();
@runtimeEnabledAttributes = ();
# Generate hash table for properties on the prototype.
my $numPrototypeProperties = GeneratePropertiesHashTable($object, $interface, 0,
\@hashKeys, \@hashSpecials,
\@hashValue1, \@hashValue2,
\%conditionals, \%readWriteConditionals,
\@runtimeEnabledOperations, \@runtimeEnabledAttributes);
my $hashSize = $numPrototypeProperties;
foreach my $constant (@{$interface->constants}) {
my $name = $constant->name;
push(@hashKeys, $name);
push(@hashValue1, $constant->value);
push(@hashValue2, "0");
push(@hashSpecials, "JSC::PropertyAttribute::DontDelete | JSC::PropertyAttribute::ReadOnly | JSC::PropertyAttribute::ConstantInteger");
my $conditional = $constant->extendedAttributes->{Conditional};
$conditionals{$name} = $conditional if $conditional;
$hashSize++;
}
my $justGenerateValueArray = !IsDOMGlobalObject($interface);
$object->GenerateHashTable($className, $hashName, $hashSize, \@hashKeys, \@hashSpecials, \@hashValue1, \@hashValue2, \%conditionals, \%readWriteConditionals, $justGenerateValueArray);
if ($justGenerateValueArray) {
push(@implContent, "const ClassInfo ${className}Prototype::s_info = { \"${visibleInterfaceName}Prototype\", &Base::s_info, nullptr, nullptr, CREATE_METHOD_TABLE(${className}Prototype) };\n\n");
} else {
push(@implContent, "const ClassInfo ${className}Prototype::s_info = { \"${visibleInterfaceName}Prototype\", &Base::s_info, &${className}PrototypeTable, nullptr, CREATE_METHOD_TABLE(${className}Prototype) };\n\n");
}
if (PrototypeHasStaticPropertyTable($interface) && !IsGlobalOrPrimaryGlobalInterface($interface)) {
push(@implContent, "void ${className}Prototype::finishCreation(VM& vm)\n");
push(@implContent, "{\n");
push(@implContent, " Base::finishCreation(vm);\n");
push(@implContent, " reifyStaticProperties(vm, ${className}::info(), ${className}PrototypeTableValues, *this);\n");
my @runtimeEnabledProperties = @runtimeEnabledOperations;
push(@runtimeEnabledProperties, @runtimeEnabledAttributes);
if (@runtimeEnabledProperties) {
push(@implContent, " bool hasDisabledRuntimeProperties = false;\n");
}
foreach my $operationOrAttribute (@runtimeEnabledProperties) {
my $conditionalString = $codeGenerator->GenerateConditionalString($operationOrAttribute);
push(@implContent, "#if ${conditionalString}\n") if $conditionalString;
my $runtimeEnableConditionalString = GenerateRuntimeEnableConditionalString($interface, $operationOrAttribute);
my $name = $operationOrAttribute->name;
push(@implContent, " if (!${runtimeEnableConditionalString}) {\n");
push(@implContent, " hasDisabledRuntimeProperties = true;\n");
push(@implContent, " auto propertyName = Identifier::fromString(vm, reinterpret_cast<const LChar*>(\"$name\"), strlen(\"$name\"));\n");
push(@implContent, " VM::DeletePropertyModeScope scope(vm, VM::DeletePropertyMode::IgnoreConfigurable);\n");
push(@implContent, " JSObject::deleteProperty(this, globalObject()->globalExec(), propertyName);\n");
push(@implContent, " }\n");
push(@implContent, "#endif\n") if $conditionalString;
}
if (@runtimeEnabledProperties) {
push(@implContent, " if (hasDisabledRuntimeProperties && structure()->isDictionary())\n");
push(@implContent, " flattenDictionaryObject(vm);\n");
}
foreach my $operation (@{$interface->operations}) {
next unless ($operation->extendedAttributes->{PrivateIdentifier});
AddToImplIncludes("WebCoreJSClientData.h");
my $conditionalString = $codeGenerator->GenerateConditionalString($operation);
push(@implContent, "#if ${conditionalString}\n") if $conditionalString;
push(@implContent, " putDirect(vm, static_cast<JSVMClientData*>(vm.clientData)->builtinNames()." . $operation->name . "PrivateName(), JSFunction::create(vm, globalObject(), 0, String(), " . GetFunctionName($interface, $className, $operation) . "), JSC::PropertyAttribute::ReadOnly | JSC::PropertyAttribute::DontEnum);\n");
push(@implContent, "#endif\n") if $conditionalString;
}
if (InterfaceNeedsIterator($interface)) {
AddToImplIncludes("<JavaScriptCore/BuiltinNames.h>");
if (IsKeyValueIterableInterface($interface) or $interface->mapLike) {
push(@implContent, " putDirect(vm, vm.propertyNames->iteratorSymbol, getDirect(vm, vm.propertyNames->builtinNames().entriesPublicName()), static_cast<unsigned>(JSC::PropertyAttribute::DontEnum));\n");
} else {
AddToImplIncludes("<JavaScriptCore/ArrayPrototype.h>");
push(@implContent, " putDirect(vm, vm.propertyNames->iteratorSymbol, globalObject()->arrayPrototype()->getDirect(vm, vm.propertyNames->builtinNames().valuesPrivateName()), static_cast<unsigned>(JSC::PropertyAttribute::DontEnum));\n");
}
}
push(@implContent, " addValueIterableMethods(*globalObject(), *this);\n") if $interface->iterable and !IsKeyValueIterableInterface($interface);
addUnscopableProperties($interface);
push(@implContent, "}\n\n");
}
# - Initialize static ClassInfo object
push(@implContent, "const ClassInfo $className" . "::s_info = { \"${visibleInterfaceName}\", &Base::s_info, ");
if ($numInstanceProperties > 0) {
push(@implContent, "&${className}Table");
} else {
push(@implContent, "nullptr");
}
if ($interface->extendedAttributes->{DOMJIT}) {
push(@implContent, "\n");
push(@implContent, "#if ENABLE(JIT)\n");
push(@implContent, ", &checkSubClassSnippetFor${className}\n");
push(@implContent, "#else\n");
push(@implContent, ", nullptr\n");
push(@implContent, "#endif\n");
} else {
push(@implContent, ", nullptr");
}
push(@implContent, ", CREATE_METHOD_TABLE($className) };\n\n");
# Constructor
if ($interfaceName eq "DOMWindow" || $interfaceName eq "RemoteDOMWindow") {
AddIncludesForImplementationTypeInImpl("JSWindowProxy");
push(@implContent, "${className}::$className(VM& vm, Structure* structure, Ref<$implType>&& impl, JSWindowProxy* proxy)\n");
push(@implContent, " : $parentClassName(vm, structure, WTFMove(impl), proxy)\n");
push(@implContent, "{\n");
push(@implContent, "}\n\n");
} elsif ($codeGenerator->InheritsInterface($interface, "WorkerGlobalScope") || $codeGenerator->InheritsInterface($interface, "WorkletGlobalScope")) {
AddIncludesForImplementationTypeInImpl($interfaceName);
push(@implContent, "${className}::$className(VM& vm, Structure* structure, Ref<$implType>&& impl)\n");
push(@implContent, " : $parentClassName(vm, structure, WTFMove(impl))\n");
push(@implContent, "{\n");
push(@implContent, "}\n\n");
} elsif (!NeedsImplementationClass($interface)) {
push(@implContent, "${className}::$className(Structure* structure, JSDOMGlobalObject& globalObject)\n");
push(@implContent, " : $parentClassName(structure, globalObject) { }\n\n");
} else {
push(@implContent, "${className}::$className(Structure* structure, JSDOMGlobalObject& globalObject, Ref<$implType>&& impl)\n");
push(@implContent, " : $parentClassName(structure, globalObject, WTFMove(impl))\n");
push(@implContent, "{\n");
push(@implContent, "}\n\n");
}
# Finish Creation
if ($interfaceName eq "DOMWindow" || $interfaceName eq "RemoteDOMWindow") {
push(@implContent, "void ${className}::finishCreation(VM& vm, JSWindowProxy* proxy)\n");
push(@implContent, "{\n");
push(@implContent, " Base::finishCreation(vm, proxy);\n\n");
} elsif ($codeGenerator->InheritsInterface($interface, "WorkerGlobalScope") || $codeGenerator->InheritsInterface($interface, "WorkletGlobalScope")) {
push(@implContent, "void ${className}::finishCreation(VM& vm, JSProxy* proxy)\n");
push(@implContent, "{\n");
push(@implContent, " Base::finishCreation(vm, proxy);\n\n");
} else {
push(@implContent, "void ${className}::finishCreation(VM& vm)\n");
push(@implContent, "{\n");
push(@implContent, " Base::finishCreation(vm);\n");
push(@implContent, " ASSERT(inherits(vm, info()));\n\n");
}
if (!$codeGenerator->InheritsExtendedAttribute($interface, "JSBuiltin")) {
AddToImplIncludes("ActiveDOMObject.h");
if ($codeGenerator->InheritsExtendedAttribute($interface, "ActiveDOMObject")) {
push(@implContent, " static_assert(std::is_base_of<ActiveDOMObject, ${implType}>::value, \"Interface is marked as [ActiveDOMObject] but implementation class does not subclass ActiveDOMObject.\");\n\n");
} else {
push(@implContent, " static_assert(!std::is_base_of<ActiveDOMObject, ${implType}>::value, \"Interface is not marked as [ActiveDOMObject] even though implementation class subclasses ActiveDOMObject.\");\n\n");
}
}
if ($interfaceName eq "Location") {
push(@implContent, " putDirect(vm, vm.propertyNames->valueOf, globalObject()->objectProtoValueOfFunction(), JSC::PropertyAttribute::DontDelete | JSC::PropertyAttribute::ReadOnly | JSC::PropertyAttribute::DontEnum);\n");
push(@implContent, " putDirect(vm, vm.propertyNames->toPrimitiveSymbol, jsUndefined(), JSC::PropertyAttribute::DontDelete | JSC::PropertyAttribute::ReadOnly | JSC::PropertyAttribute::DontEnum);\n");
}
if ($interface->mapLike) {
push(@implContent, " synchronizeBackingMap(*globalObject()->globalExec(), *globalObject(), *this);\n");
}
# Support for RuntimeEnabled attributes on instances.
foreach my $attribute (@{$interface->attributes}) {
next unless NeedsRuntimeCheck($interface, $attribute);
next unless AttributeShouldBeOnInstance($interface, $attribute);
AddToImplIncludes("WebCoreJSClientData.h");
my $runtimeEnableConditionalString = GenerateRuntimeEnableConditionalString($interface, $attribute);
my $attributeName = $attribute->name;
my $getter = GetAttributeGetterName($interface, $className, $attribute);
my $setter = IsReadonly($attribute) ? "nullptr" : GetAttributeSetterName($interface, $className, $attribute);
my $jscAttributes = GetJSCAttributesForAttribute($interface, $attribute);
my $conditionalString = $codeGenerator->GenerateConditionalString($attribute);
push(@implContent, "#if ${conditionalString}\n") if $conditionalString;
push(@implContent, " if (${runtimeEnableConditionalString})\n");
push(@implContent, " putDirectCustomAccessor(vm, static_cast<JSVMClientData*>(vm.clientData)->builtinNames()." . $attributeName . "PublicName(), CustomGetterSetter::create(vm, $getter, $setter), attributesForStructure($jscAttributes));\n");
push(@implContent, "#endif\n") if $conditionalString;
}
# Support PrivateIdentifier attributes on instances.
foreach my $attribute (@{$interface->attributes}) {
next unless $attribute->extendedAttributes->{PrivateIdentifier};
next unless AttributeShouldBeOnInstance($interface, $attribute);
AddToImplIncludes("WebCoreJSClientData.h");
my $conditionalString = $codeGenerator->GenerateConditionalString($attribute);
my $attributeName = $attribute->name;
my $getter = GetAttributeGetterName($interface, $className, $attribute);
push(@implContent, "#if ${conditionalString}\n") if $conditionalString;
push(@implContent, " putDirectCustomAccessor(vm, static_cast<JSVMClientData*>(vm.clientData)->builtinNames()." . $attributeName . "PrivateName(), CustomGetterSetter::create(vm, $getter, nullptr), attributesForStructure(JSC::PropertyAttribute::DontDelete | JSC::PropertyAttribute::ReadOnly));\n");
push(@implContent, "#endif\n") if $conditionalString;
}
# Support for RuntimeEnabled operations on instances.
foreach my $operation (@{$interface->operations}) {
next unless NeedsRuntimeCheck($interface, $operation);
next unless OperationShouldBeOnInstance($interface, $operation);
next if $operation->{overloadIndex} && $operation->{overloadIndex} > 1;
AddToImplIncludes("WebCoreJSClientData.h");
my $runtimeEnableConditionalString = GenerateRuntimeEnableConditionalString($interface, $operation);
my $functionName = $operation->name;
my $implementationFunction = GetFunctionName($interface, $className, $operation);
my $functionLength = GetFunctionLength($operation);
my $jsAttributes = ComputeFunctionSpecial($interface, $operation);
my $conditionalString = $codeGenerator->GenerateConditionalString($operation);
push(@implContent, "#if ${conditionalString}\n") if $conditionalString;
push(@implContent, " if (${runtimeEnableConditionalString})\n");
my $propertyName = "static_cast<JSVMClientData*>(vm.clientData)->builtinNames()." . $functionName . ($operation->extendedAttributes->{PrivateIdentifier} ? "PrivateName()" : "PublicName()");
if (IsJSBuiltin($interface, $operation)) {
push(@implContent, " putDirectBuiltinFunction(vm, this, $propertyName, $implementationFunction(vm), attributesForStructure($jsAttributes));\n");
} else {
push(@implContent, " putDirectNativeFunction(vm, this, $propertyName, $functionLength, $implementationFunction, NoIntrinsic, attributesForStructure($jsAttributes));\n");
}
push(@implContent, "#endif\n") if $conditionalString;
}
push(@implContent, "}\n\n");
unless (ShouldUseGlobalObjectPrototype($interface)) {
push(@implContent, "JSObject* ${className}::createPrototype(VM& vm, JSDOMGlobalObject& globalObject)\n");
push(@implContent, "{\n");
if ($interface->parentType) {
my $parentClassNameForPrototype = "JS" . $interface->parentType->name;
push(@implContent, " return ${className}Prototype::create(vm, &globalObject, ${className}Prototype::createStructure(vm, &globalObject, ${parentClassNameForPrototype}::prototype(vm, globalObject)));\n");
} else {
my $prototype = $interface->isException ? "errorPrototype" : "objectPrototype";
push(@implContent, " return ${className}Prototype::create(vm, &globalObject, ${className}Prototype::createStructure(vm, &globalObject, globalObject.${prototype}()));\n");
}
push(@implContent, "}\n\n");
push(@implContent, "JSObject* ${className}::prototype(VM& vm, JSDOMGlobalObject& globalObject)\n");
push(@implContent, "{\n");
push(@implContent, " return getDOMPrototype<${className}>(vm, globalObject);\n");
push(@implContent, "}\n\n");
}
if (!$interface->extendedAttributes->{NoInterfaceObject}) {
push(@implContent, "JSValue ${className}::getConstructor(VM& vm, const JSGlobalObject* globalObject)\n");
push(@implContent, "{\n");
push(@implContent, " return getDOMConstructor<${className}Constructor>(vm, *jsCast<const JSDOMGlobalObject*>(globalObject));\n");
push(@implContent, "}\n\n");
if ($interface->extendedAttributes->{NamedConstructor}) {
push(@implContent, "JSValue ${className}::getNamedConstructor(VM& vm, JSGlobalObject* globalObject)\n");
push(@implContent, "{\n");
push(@implContent, " return getDOMConstructor<${className}NamedConstructor>(vm, *jsCast<JSDOMGlobalObject*>(globalObject));\n");
push(@implContent, "}\n\n");
}
}
if (!$hasParent) {
push(@implContent, "void ${className}::destroy(JSC::JSCell* cell)\n");
push(@implContent, "{\n");
push(@implContent, " ${className}* thisObject = static_cast<${className}*>(cell);\n");
push(@implContent, " thisObject->${className}::~${className}();\n");
push(@implContent, "}\n\n");
}
if (InstanceOverridesGetOwnPropertySlot($interface)) {
GenerateGetOwnPropertySlot(\@implContent, $interface, $className);
GenerateGetOwnPropertySlotByIndex(\@implContent, $interface, $className);
}
if (InstanceOverridesGetOwnPropertyNames($interface)) {
GenerateGetOwnPropertyNames(\@implContent, $interface, $className);
}
if (InstanceOverridesPut($interface)) {
GeneratePut(\@implContent, $interface, $className);
GeneratePutByIndex(\@implContent, $interface, $className);
}
if (InstanceOverridesDefineOwnProperty($interface)) {
GenerateDefineOwnProperty(\@implContent, $interface, $className);
}
if (InstanceOverridesDeleteProperty($interface)) {
GenerateNamedDeleterDefinition(\@implContent, $interface, $className);
}
if (InstanceOverridesGetCallData($interface)) {
GenerateGetCallData(\@implContent, $interface, $className);
}
if ($numAttributes > 0) {
AddToImplIncludes("JSDOMAttribute.h");
my $castingFunction = $interface->extendedAttributes->{CustomProxyToJSObject} ? "to${className}" : GetCastingHelperForThisObject($interface);
# FIXME: Remove ImplicitThis keyword as it is no longer defined by WebIDL spec and is only used in DOMWindow.
if ($interface->extendedAttributes->{ImplicitThis}) {
push(@implContent, "template<> inline ${className}* IDLAttribute<${className}>::cast(ExecState& state, EncodedJSValue thisValue)\n");
push(@implContent, "{\n");
push(@implContent, " VM& vm = state.vm();\n");
push(@implContent, " auto decodedThisValue = JSValue::decode(thisValue);\n");
push(@implContent, " if (decodedThisValue.isUndefinedOrNull())\n");
push(@implContent, " decodedThisValue = state.thisValue().toThis(&state, NotStrictMode);\n");
push(@implContent, " return $castingFunction(vm, decodedThisValue);");
push(@implContent, "}\n\n");
} else {
push(@implContent, "template<> inline ${className}* IDLAttribute<${className}>::cast(ExecState& state, EncodedJSValue thisValue)\n");
push(@implContent, "{\n");
push(@implContent, " return $castingFunction(state.vm(), JSValue::decode(thisValue));\n");
push(@implContent, "}\n\n");
}
}
if ($numOperations > 0 && $interfaceName ne "EventTarget") {
AddToImplIncludes("JSDOMOperation.h");
# FIXME: Make consistent IDLAttribute<>::cast and IDLOperation<>::cast in case of CustomProxyToJSObject.
my $castingFunction = $interface->extendedAttributes->{CustomProxyToJSObject} ? "to${className}" : GetCastingHelperForThisObject($interface);
my $thisValue = $interface->extendedAttributes->{CustomProxyToJSObject} ? "state.thisValue().toThis(&state, NotStrictMode)" : "state.thisValue()";
push(@implContent, "template<> inline ${className}* IDLOperation<${className}>::cast(ExecState& state)\n");
push(@implContent, "{\n");
push(@implContent, " return $castingFunction(state.vm(), $thisValue);\n");
push(@implContent, "}\n\n");
}
if (NeedsConstructorProperty($interface)) {
my $constructorGetter = "js" . $interfaceName . "Constructor";
push(@implContent, "EncodedJSValue ${constructorGetter}(ExecState* state, EncodedJSValue thisValue, PropertyName)\n");
push(@implContent, "{\n");
push(@implContent, " VM& vm = state->vm();\n");
push(@implContent, " auto throwScope = DECLARE_THROW_SCOPE(vm);\n");
push(@implContent, " auto* prototype = jsDynamicCast<${className}Prototype*>(vm, JSValue::decode(thisValue));\n");
push(@implContent, " if (UNLIKELY(!prototype))\n");
push(@implContent, " return throwVMTypeError(state, throwScope);\n");
if (!$interface->extendedAttributes->{NoInterfaceObject}) {
push(@implContent, " return JSValue::encode(${className}::getConstructor(state->vm(), prototype->globalObject()));\n");
} else {
push(@implContent, " JSValue constructor = ${className}Constructor::create(state->vm(), ${className}Constructor::createStructure(state->vm(), *prototype->globalObject(), prototype->globalObject()->objectPrototype()), *jsCast<JSDOMGlobalObject*>(prototype->globalObject()));\n");
push(@implContent, " // Shadowing constructor property to ensure reusing the same constructor object\n");
push(@implContent, " prototype->putDirect(vm, vm.propertyNames->constructor, constructor, static_cast<unsigned>(JSC::PropertyAttribute::DontEnum));\n");
push(@implContent, " return JSValue::encode(constructor);\n");
}
push(@implContent, "}\n\n");
my $constructorSetter = "setJS" . $interfaceName . "Constructor";
push(@implContent, "bool ${constructorSetter}(ExecState* state, EncodedJSValue thisValue, EncodedJSValue encodedValue)\n");
push(@implContent, "{\n");
push(@implContent, " VM& vm = state->vm();\n");
push(@implContent, " auto throwScope = DECLARE_THROW_SCOPE(vm);\n");
push(@implContent, " auto* prototype = jsDynamicCast<${className}Prototype*>(vm, JSValue::decode(thisValue));\n");
push(@implContent, " if (UNLIKELY(!prototype)) {\n");
push(@implContent, " throwVMTypeError(state, throwScope);\n");
push(@implContent, " return false;\n");
push(@implContent, " }\n");
push(@implContent, " // Shadowing a built-in constructor\n");
push(@implContent, " return prototype->putDirect(vm, vm.propertyNames->constructor, JSValue::decode(encodedValue));\n");
push(@implContent, "}\n\n");
}
foreach my $attribute (@attributes) {
GenerateAttributeGetterDefinition(\@implContent, $interface, $className, $attribute);
GenerateAttributeSetterDefinition(\@implContent, $interface, $className, $attribute);
}
foreach my $operation (@operations) {
GenerateOperationDefinition(\@implContent, $interface, $className, $operation);
}
GenerateIterableDefinition($interface) if $interface->iterable;
GenerateSerializerDefinition($interface, $className) if $interface->serializable;
if ($needsVisitChildren) {
push(@implContent, "void ${className}::visitChildren(JSCell* cell, SlotVisitor& visitor)\n");
push(@implContent, "{\n");
push(@implContent, " auto* thisObject = jsCast<${className}*>(cell);\n");
push(@implContent, " ASSERT_GC_OBJECT_INHERITS(thisObject, info());\n");
push(@implContent, " Base::visitChildren(thisObject, visitor);\n");
push(@implContent, " thisObject->visitAdditionalChildren(visitor);\n") if $interface->extendedAttributes->{JSCustomMarkFunction};
if ($interface->extendedAttributes->{ReportExtraMemoryCost}) {
push(@implContent, " visitor.reportExtraMemoryVisited(thisObject->wrapped().memoryCost());\n");
if ($interface->extendedAttributes->{ReportExternalMemoryCost}) {;
push(@implContent, "#if ENABLE(RESOURCE_USAGE)\n");
push(@implContent, " visitor.reportExternalMemoryVisited(thisObject->wrapped().externalMemoryCost());\n");
push(@implContent, "#endif\n");
}
}
if ($numCachedAttributes > 0) {
foreach my $attribute (@{$interface->attributes}) {
if ($attribute->extendedAttributes->{CachedAttribute}) {
my $conditionalString = $codeGenerator->GenerateConditionalString($attribute);
push(@implContent, "#if ${conditionalString}\n") if $conditionalString;
push(@implContent, " visitor.append(thisObject->m_" . $attribute->name . ");\n");
push(@implContent, "#endif\n") if $conditionalString;
}
}
}
push(@implContent, "}\n\n");
if ($interface->extendedAttributes->{JSCustomMarkFunction}) {
push(@implContent, "void ${className}::visitOutputConstraints(JSCell* cell, SlotVisitor& visitor)\n");
push(@implContent, "{\n");
push(@implContent, " auto* thisObject = jsCast<${className}*>(cell);\n");
push(@implContent, " ASSERT_GC_OBJECT_INHERITS(thisObject, info());\n");
push(@implContent, " Base::visitOutputConstraints(thisObject, visitor);\n");
push(@implContent, " thisObject->visitAdditionalChildren(visitor);\n");
push(@implContent, "}\n\n");
}
}
if (InstanceNeedsEstimatedSize($interface)) {
push(@implContent, "size_t ${className}::estimatedSize(JSCell* cell, VM& vm)\n");
push(@implContent, "{\n");
push(@implContent, " auto* thisObject = jsCast<${className}*>(cell);\n");
push(@implContent, " return Base::estimatedSize(thisObject, vm) + thisObject->wrapped().memoryCost();\n");
push(@implContent, "}\n\n");
}
if (NeedsImplementationClass($interface) && !$interface->extendedAttributes->{CustomHeapSnapshot}) {
AddToImplIncludes("<JavaScriptCore/HeapAnalyzer.h>");
AddToImplIncludes("ScriptExecutionContext.h");
AddToImplIncludes("<wtf/URL.h>");
push(@implContent, "void ${className}::analyzeHeap(JSCell* cell, HeapAnalyzer& analyzer)\n");
push(@implContent, "{\n");
push(@implContent, " auto* thisObject = jsCast<${className}*>(cell);\n");
push(@implContent, " analyzer.setWrappedObjectForCell(cell, &thisObject->wrapped());\n");
push(@implContent, " if (thisObject->scriptExecutionContext())\n");
push(@implContent, " analyzer.setLabelForCell(cell, \"url \" + thisObject->scriptExecutionContext()->url().string());\n");
push(@implContent, " Base::analyzeHeap(cell, analyzer);\n");
push(@implContent, "}\n\n");
}
if ($indexedGetterOperation) {
$implIncludes{"<wtf/URL.h>"} = 1 if $indexedGetterOperation->type->name eq "DOMString";
if ($interfaceName =~ /^HTML\w*Collection$/ or $interfaceName eq "RadioNodeList") {
$implIncludes{"JSNode.h"} = 1;
$implIncludes{"Node.h"} = 1;
}
}
if (ShouldGenerateWrapperOwnerCode($hasParent, $interface) && !GetCustomIsReachable($interface)) {
push(@implContent, "bool JS${interfaceName}Owner::isReachableFromOpaqueRoots(JSC::Handle<JSC::Unknown> handle, void*, SlotVisitor& visitor, const char** reason)\n");
push(@implContent, "{\n");
# All ActiveDOMObjects implement hasPendingActivity(), but not all of them
# increment their C++ reference counts when hasPendingActivity() becomes
# true. As a result, ActiveDOMObjects can be prematurely destroyed before
# their pending activities complete. To wallpaper over this bug, JavaScript
# wrappers unconditionally keep ActiveDOMObjects with pending activity alive.
# FIXME: Fix this lifetime issue in the DOM, and move this hasPendingActivity
# check just above the (GetGenerateIsReachable($interface) eq "Impl") check below.
my $emittedJSCast = 0;
if ($codeGenerator->InheritsExtendedAttribute($interface, "ActiveDOMObject")) {
push(@implContent, " auto* js${interfaceName} = jsCast<JS${interfaceName}*>(handle.slot()->asCell());\n");
$emittedJSCast = 1;
push(@implContent, " if (js${interfaceName}->wrapped().hasPendingActivity()) {\n");
push(@implContent, " if (UNLIKELY(reason))\n");
push(@implContent, " *reason = \"ActiveDOMObject with pending activity\";\n");
push(@implContent, " return true;\n");
push(@implContent, " }\n");
}
if ($codeGenerator->InheritsInterface($interface, "EventTarget")) {
if (!$emittedJSCast) {
push(@implContent, " auto* js${interfaceName} = jsCast<JS${interfaceName}*>(handle.slot()->asCell());\n");
$emittedJSCast = 1;
}
push(@implContent, " if (js${interfaceName}->wrapped().isFiringEventListeners()) {\n");
push(@implContent, " if (UNLIKELY(reason))\n");
push(@implContent, " *reason = \"EventTarget firing event listeners\";\n");
push(@implContent, " return true;\n");
push(@implContent, " }\n");
}
if ($codeGenerator->InheritsInterface($interface, "Node")) {
if (!$emittedJSCast) {
push(@implContent, " auto* js${interfaceName} = jsCast<JS${interfaceName}*>(handle.slot()->asCell());\n");
$emittedJSCast = 1;
}
push(@implContent, " if (JSNodeOwner::isReachableFromOpaqueRoots(handle, 0, visitor, reason))\n");
push(@implContent, " return true;\n");
}
if (GetGenerateIsReachable($interface)) {
if (!$emittedJSCast) {
push(@implContent, " auto* js${interfaceName} = jsCast<JS${interfaceName}*>(handle.slot()->asCell());\n");
$emittedJSCast = 1;
}
my $rootString;
if (GetGenerateIsReachable($interface) eq "Impl") {
$rootString = " ${implType}* root = &js${interfaceName}->wrapped();\n";
$rootString .= " if (UNLIKELY(reason))\n";
$rootString .= " *reason = \"Reachable from ${interfaceName}\";\n";
} elsif (GetGenerateIsReachable($interface) eq "ImplWebGLRenderingContext") {
$rootString = " WebGLRenderingContextBase* root = WTF::getPtr(js${interfaceName}->wrapped().context());\n";
$rootString .= " if (UNLIKELY(reason))\n";
$rootString .= " *reason = \"Reachable from ${interfaceName}\";\n";
} elsif (GetGenerateIsReachable($interface) eq "ReachableFromDOMWindow") {
$rootString = " auto* root = WTF::getPtr(js${interfaceName}->wrapped().window());\n";
$rootString .= " if (!root)\n";
$rootString .= " return false;\n";
$rootString .= " if (UNLIKELY(reason))\n";
$rootString .= " *reason = \"Reachable from Window\";\n";
} elsif (GetGenerateIsReachable($interface) eq "ReachableFromNavigator") {
$implIncludes{"Navigator.h"} = 1;
$implIncludes{"WorkerNavigator.h"} = 1;
$rootString = " NavigatorBase* root = WTF::getPtr(js${interfaceName}->wrapped().navigator());\n";
$rootString .= " if (!root)\n";
$rootString .= " return false;\n";
$rootString .= " if (UNLIKELY(reason))\n";
$rootString .= " *reason = \"Reachable from Navigator\";\n";
} elsif (GetGenerateIsReachable($interface) eq "ImplDocument") {
$rootString = " Document* root = WTF::getPtr(js${interfaceName}->wrapped().document());\n";
$rootString .= " if (!root)\n";
$rootString .= " return false;\n";
$rootString .= " if (UNLIKELY(reason))\n";
$rootString .= " *reason = \"Reachable from Document\";\n";
} elsif (GetGenerateIsReachable($interface) eq "ImplElementRoot") {
$implIncludes{"Element.h"} = 1;
$implIncludes{"JSNodeCustom.h"} = 1;
$rootString = " Element* element = WTF::getPtr(js${interfaceName}->wrapped().element());\n";
$rootString .= " if (!element)\n";
$rootString .= " return false;\n";
$rootString .= " if (UNLIKELY(reason))\n";
$rootString .= " *reason = \"Reachable from ${interfaceName}Owner\";\n";
$rootString .= " void* root = WebCore::root(element);\n";
} elsif (GetGenerateIsReachable($interface) eq "ImplOwnerNodeRoot") {
$implIncludes{"Element.h"} = 1;
$implIncludes{"JSNodeCustom.h"} = 1;
$rootString = " void* root = WebCore::root(js${interfaceName}->wrapped().ownerNode());\n";
$rootString .= " if (UNLIKELY(reason))\n";
$rootString .= " *reason = \"Reachable from ${interfaceName} ownerNode\";\n";
} elsif (GetGenerateIsReachable($interface) eq "ImplScriptExecutionContext") {
$rootString = " ScriptExecutionContext* root = WTF::getPtr(js${interfaceName}->wrapped().scriptExecutionContext());\n";
$rootString .= " if (!root)\n";
$rootString .= " return false;\n";
$rootString .= " if (UNLIKELY(reason))\n";
$rootString .= " *reason = \"Reachable from ScriptExecutionContext\";\n";
} else {
$rootString = " void* root = WebCore::root(&js${interfaceName}->wrapped());\n";
$rootString .= " if (UNLIKELY(reason))\n";
$rootString .= " *reason = \"Reachable from js${interfaceName}\";\n";
}
push(@implContent, $rootString);
push(@implContent, " return visitor.containsOpaqueRoot(root);\n");
} else {
if (!$emittedJSCast) {
push(@implContent, " UNUSED_PARAM(handle);\n");
}
push(@implContent, " UNUSED_PARAM(visitor);\n");
push(@implContent, " UNUSED_PARAM(reason);\n");
push(@implContent, " return false;\n");
}
push(@implContent, "}\n\n");
}
if (ShouldGenerateWrapperOwnerCode($hasParent, $interface) && !$interface->extendedAttributes->{JSCustomFinalize}) {
push(@implContent, "void JS${interfaceName}Owner::finalize(JSC::Handle<JSC::Unknown> handle, void* context)\n");
push(@implContent, "{\n");
push(@implContent, " auto* js${interfaceName} = static_cast<JS${interfaceName}*>(handle.slot()->asCell());\n");
push(@implContent, " auto& world = *static_cast<DOMWrapperWorld*>(context);\n");
push(@implContent, " uncacheWrapper(world, &js${interfaceName}->wrapped(), js${interfaceName});\n");
push(@implContent, "}\n\n");
}
if (ShouldGenerateToJSImplementation($hasParent, $interface)) {
my $vtableNameGnu = GetGnuVTableNameForInterface($interface);
my $vtableRefGnu = GetGnuVTableRefForInterface($interface);
my $vtableRefWin = GetWinVTableRefForInterface($interface);
push(@implContent, <<END) if $vtableNameGnu;
#if ENABLE(BINDING_INTEGRITY)
#if PLATFORM(WIN)
#pragma warning(disable: 4483)
extern "C" { extern void (*const ${vtableRefWin}[])(); }
#else
extern "C" { extern void* ${vtableNameGnu}[]; }
#endif
#endif
END
push(@implContent, "JSC::JSValue toJSNewlyCreated(JSC::ExecState*, JSDOMGlobalObject* globalObject, Ref<$implType>&& impl)\n");
push(@implContent, "{\n");
push(@implContent, <<END) if $vtableNameGnu;
#if ENABLE(BINDING_INTEGRITY)
void* actualVTablePointer = *(reinterpret_cast<void**>(impl.ptr()));
#if PLATFORM(WIN)
void* expectedVTablePointer = WTF_PREPARE_VTBL_POINTER_FOR_INSPECTION(${vtableRefWin});
#else
void* expectedVTablePointer = WTF_PREPARE_VTBL_POINTER_FOR_INSPECTION(${vtableRefGnu});
#endif
// If this fails ${implType} does not have a vtable, so you need to add the
// ImplementationLacksVTable attribute to the interface definition
static_assert(std::is_polymorphic<${implType}>::value, "${implType} is not polymorphic");
// If you hit this assertion you either have a use after free bug, or
// ${implType} has subclasses. If ${implType} has subclasses that get passed
// to toJS() we currently require $interfaceName you to opt out of binding hardening
// by adding the SkipVTableValidation attribute to the interface IDL definition
RELEASE_ASSERT(actualVTablePointer == expectedVTablePointer);
#endif
END
push(@implContent, <<END) if $interface->extendedAttributes->{ImplementationLacksVTable};
// If you hit this failure the interface definition has the ImplementationLacksVTable
// attribute. You should remove that attribute. If the class has subclasses
// that may be passed through this toJS() function you should use the SkipVTableValidation
// attribute to $interfaceName.
static_assert(!std::is_polymorphic<${implType}>::value, "${implType} is polymorphic but the IDL claims it is not");
END
push(@implContent, <<END) if $interface->extendedAttributes->{ReportExtraMemoryCost};
globalObject->vm().heap.reportExtraMemoryAllocated(impl->memoryCost());
END
push(@implContent, " return createWrapper<${implType}>(globalObject, WTFMove(impl));\n");
push(@implContent, "}\n\n");
push(@implContent, "JSC::JSValue toJS(JSC::ExecState* state, JSDOMGlobalObject* globalObject, ${implType}& impl)\n");
push(@implContent, "{\n");
push(@implContent, " return wrap(state, globalObject, impl);\n");
push(@implContent, "}\n\n");
}
if (ShouldGenerateToWrapped($hasParent, $interface) and !$interface->extendedAttributes->{JSCustomToNativeObject}) {
push(@implContent, "${implType}* ${className}::toWrapped(JSC::VM& vm, JSC::JSValue value)\n");
push(@implContent, "{\n");
push(@implContent, " if (auto* wrapper = " . GetCastingHelperForThisObject($interface) . "(vm, value))\n");
push(@implContent, " return &wrapper->wrapped();\n");
push(@implContent, " return nullptr;\n");
push(@implContent, "}\n");
}
push(@implContent, "\n}\n");
my $conditionalString = $codeGenerator->GenerateConditionalString($interface);
push(@implContent, "\n#endif // ${conditionalString}\n") if $conditionalString;
}
sub GenerateAttributeGetterBodyDefinition
{
my ($outputArray, $interface, $className, $attribute, $attributeGetterBodyName, $conditional) = @_;
my @signatureArguments = ();
push(@signatureArguments, "ExecState& state");
push(@signatureArguments, "${className}& thisObject") if !$attribute->isStatic;
push(@signatureArguments, "ThrowScope& throwScope");
push(@$outputArray, "static inline JSValue ${attributeGetterBodyName}(" . join(", ", @signatureArguments) . ")\n");
push(@$outputArray, "{\n");
push(@$outputArray, " UNUSED_PARAM(throwScope);\n");
push(@$outputArray, " UNUSED_PARAM(state);\n");
if ($interface->extendedAttributes->{CheckSecurity} &&
!$attribute->extendedAttributes->{DoNotCheckSecurity} &&
!$attribute->extendedAttributes->{DoNotCheckSecurityOnGetter}) {
AddToImplIncludes("JSDOMBindingSecurity.h", $conditional);
if ($interface->type->name eq "DOMWindow") {
push(@$outputArray, " if (!BindingSecurity::shouldAllowAccessToDOMWindow(&state, thisObject.wrapped(), ThrowSecurityError))\n");
} else {
push(@$outputArray, " if (!BindingSecurity::shouldAllowAccessToDOMWindow(&state, thisObject.wrapped().window(), ThrowSecurityError))\n");
}
push(@$outputArray, " return jsUndefined();\n");
}
if (HasCustomGetter($attribute)) {
my $implGetterFunctionName = $codeGenerator->WK_lcfirst($attribute->extendedAttributes->{ImplementedAs} || $attribute->name);
push(@$outputArray, " return thisObject.${implGetterFunctionName}(state);\n");
} elsif ($attribute->type->name eq "EventHandler") {
$implIncludes{"EventNames.h"} = 1;
my $getter = $attribute->extendedAttributes->{WindowEventHandler} ? "windowEventHandlerAttribute"
: $attribute->extendedAttributes->{DocumentEventHandler} ? "documentEventHandlerAttribute"
: "eventHandlerAttribute";
my $eventName = EventHandlerAttributeEventName($attribute);
push(@$outputArray, " return $getter(thisObject.wrapped(), $eventName, worldForDOMObject(thisObject));\n");
} elsif ($codeGenerator->IsConstructorType($attribute->type)) {
my $constructorType = $attribute->type->name;
$constructorType =~ s/Constructor$//;
# When Constructor attribute is used by DOMWindow.idl, it's correct to pass thisObject as the global object
# When JSDOMWrappers have a back-pointer to the globalObject we can pass thisObject->globalObject()
if ($interface->type->name eq "DOMWindow") {
my $named = ($constructorType =~ /Named$/) ? "Named" : "";
$constructorType =~ s/Named$//;
push(@$outputArray, " return JS" . $constructorType . "::get${named}Constructor(state.vm(), &thisObject);\n");
} else {
AddToImplIncludes("JS" . $constructorType . ".h", $conditional);
push(@$outputArray, " return JS" . $constructorType . "::getConstructor(state.vm(), thisObject.globalObject());\n");
}
} else {
if ($attribute->extendedAttributes->{CachedAttribute}) {
push(@$outputArray, " if (JSValue cachedValue = thisObject.m_" . $attribute->name . ".get())\n");
push(@$outputArray, " return cachedValue;\n");
}
my @callWithArgs = GenerateCallWithUsingReferences($attribute->extendedAttributes->{CallWith}, $outputArray, "jsUndefined()", "thisObject");
my ($baseFunctionName, @arguments) = $codeGenerator->GetterExpression(\%implIncludes, $interface->type->name, $attribute);
my $functionName = GetFullyQualifiedImplementationCallName($interface, $attribute, $baseFunctionName, "impl", $conditional);
AddAdditionalArgumentsForImplementationCall(\@arguments, $interface, $attribute, "impl", "state", "thisObject");
unshift(@arguments, @callWithArgs);
my $globalObjectReference = $attribute->isStatic ? "*jsCast<JSDOMGlobalObject*>(state.lexicalGlobalObject())" : "*thisObject.globalObject()";
my $toJSExpression = NativeToJSValueUsingReferences($attribute, $interface, "${functionName}(" . join(", ", @arguments) . ")", $globalObjectReference);
push(@$outputArray, " auto& impl = thisObject.wrapped();\n") unless $attribute->isStatic or $attribute->isMapLike;
if (!IsReadonly($attribute)) {
my $callTracingCallback = $attribute->extendedAttributes->{CallTracingCallback} || $interface->extendedAttributes->{CallTracingCallback};
if ($callTracingCallback) {
my @callTracerArguments = ();
GenerateCallTracer($outputArray, $callTracingCallback, $attribute->name, \@callTracerArguments, " ");
}
}
push(@$outputArray, " JSValue result = ${toJSExpression};\n");
push(@$outputArray, " thisObject.m_" . $attribute->name . ".set(state.vm(), &thisObject, result);\n") if $attribute->extendedAttributes->{CachedAttribute};
push(@$outputArray, " return result;\n");
}
push(@$outputArray, "}\n\n");
}
sub GenerateAttributeGetterTrampolineDefinition
{
my ($outputArray, $interface, $className, $attribute, $attributeGetterName, $attributeGetterBodyName, $conditional) = @_;
AddToImplIncludes("JSDOMAttribute.h", $conditional);
my $callAttributeGetterName = "get";
$callAttributeGetterName .= "Static" if $attribute->isStatic;
my @templateParameters = ();
push(@templateParameters, $attributeGetterBodyName);
if ($attribute->extendedAttributes->{LenientThis}) {
push(@templateParameters, "CastedThisErrorBehavior::ReturnEarly")
} elsif ($codeGenerator->IsPromiseType($attribute->type)) {
push(@templateParameters, "CastedThisErrorBehavior::RejectPromise")
} elsif (IsAcceleratedDOMAttribute($interface, $attribute)) {
push(@templateParameters, "CastedThisErrorBehavior::Assert");
}
push(@$outputArray, "EncodedJSValue ${attributeGetterName}(ExecState* state, EncodedJSValue thisValue, PropertyName)\n");
push(@$outputArray, "{\n");
push(@$outputArray, " return IDLAttribute<${className}>::${callAttributeGetterName}<" . join(", ", @templateParameters) . ">(*state, thisValue, \"" . $attribute->name . "\");\n");
push(@$outputArray, "}\n\n");
}
sub GenerateAttributeGetterDefinition
{
my ($outputArray, $interface, $className, $attribute) = @_;
return if IsJSBuiltin($interface, $attribute);
my $attributeGetterName = GetAttributeGetterName($interface, $className, $attribute);
my $attributeGetterBodyName = $attributeGetterName . "Getter";
my $conditional = $attribute->extendedAttributes->{Conditional};
if ($conditional) {
my $conditionalString = $codeGenerator->GenerateConditionalStringFromAttributeValue($conditional);
push(@$outputArray, "#if ${conditionalString}\n");;
}
GenerateAttributeGetterBodyDefinition($outputArray, $interface, $className, $attribute, $attributeGetterBodyName, $conditional);
GenerateAttributeGetterTrampolineDefinition($outputArray, $interface, $className, $attribute, $attributeGetterName, $attributeGetterBodyName, $conditional);
push(@$outputArray, "#endif\n\n") if $conditional;
}
sub GenerateAttributeSetterBodyDefinition
{
my ($outputArray, $interface, $className, $attribute, $attributeSetterBodyName, $conditional) = @_;
my @signatureArguments = ();
push(@signatureArguments, "ExecState& state");
push(@signatureArguments, "${className}& thisObject") if !$attribute->isStatic;
push(@signatureArguments, "JSValue value");
push(@signatureArguments, "ThrowScope& throwScope");
push(@$outputArray, "static inline bool ${attributeSetterBodyName}(" . join(", ", @signatureArguments) . ")\n");
push(@$outputArray, "{\n");
push(@$outputArray, " UNUSED_PARAM(state);\n");
if ($codeGenerator->IsConstructorType($attribute->type) || $attribute->extendedAttributes->{Replaceable} || $attribute->extendedAttributes->{PutForwards}) {
push(@$outputArray, " VM& vm = throwScope.vm();\n");
} else {
push(@$outputArray, " UNUSED_PARAM(throwScope);\n");
}
GenerateCustomElementReactionsStackIfNeeded($outputArray, $attribute, "state");
if ($interface->extendedAttributes->{CheckSecurity} && !$attribute->extendedAttributes->{DoNotCheckSecurity} && !$attribute->extendedAttributes->{DoNotCheckSecurityOnSetter}) {
AddToImplIncludes("JSDOMBindingSecurity.h", $conditional);
if ($interface->type->name eq "DOMWindow") {
push(@$outputArray, " if (!BindingSecurity::shouldAllowAccessToDOMWindow(&state, thisObject.wrapped(), ThrowSecurityError))\n");
} else {
push(@$outputArray, " if (!BindingSecurity::shouldAllowAccessToDOMWindow(&state, thisObject.wrapped().window(), ThrowSecurityError))\n");
}
push(@$outputArray, " return false;\n");
}
if (HasCustomSetter($attribute)) {
my $implSetterFunctionName = $codeGenerator->WK_ucfirst($attribute->name);
push(@$outputArray, " thisObject.set${implSetterFunctionName}(state, value);\n");
push(@$outputArray, " return true;\n");
} elsif ($attribute->type->name eq "EventHandler") {
AddToImplIncludes("JSEventListener.h", $conditional);
my $eventName = EventHandlerAttributeEventName($attribute);
# FIXME: Find a way to do this special case without hardcoding the class and attribute names here.
if (($interface->type->name eq "DOMWindow" or $interface->type->name eq "WorkerGlobalScope") and $attribute->name eq "onerror") {
AddToImplIncludes("JSErrorHandler.h", $conditional);
push(@$outputArray, " thisObject.wrapped().setAttributeEventListener($eventName, createJSErrorHandler(state, value, thisObject), worldForDOMObject(thisObject));\n");
} else {
AddToImplIncludes("JSEventListener.h", $conditional);
my $setter = $attribute->extendedAttributes->{WindowEventHandler} ? "setWindowEventHandlerAttribute"
: $attribute->extendedAttributes->{DocumentEventHandler} ? "setDocumentEventHandlerAttribute"
: "setEventHandlerAttribute";
push(@$outputArray, " $setter(state, thisObject, thisObject.wrapped(), ${eventName}, value);\n");
}
push(@$outputArray, " return true;\n");
} elsif ($codeGenerator->IsConstructorType($attribute->type)) {
my $constructorType = $attribute->type->name;
$constructorType =~ s/Constructor$//;
# $constructorType ~= /Constructor$/ indicates that it is NamedConstructor.
# We do not generate the header file for NamedConstructor of class XXXX,
# since we generate the NamedConstructor declaration into the header file of class XXXX.
if ($constructorType ne "any" and $constructorType !~ /Named$/) {
AddToImplIncludes("JS" . $constructorType . ".h", $conditional);
}
my $id = $attribute->name;
push(@$outputArray, " // Shadowing a built-in constructor.\n");
push(@$outputArray, " return thisObject.putDirect(vm, Identifier::fromString(vm, reinterpret_cast<const LChar*>(\"${id}\"), strlen(\"${id}\")), value);\n");
} elsif ($attribute->extendedAttributes->{Replaceable}) {
my $id = $attribute->name;
push(@$outputArray, " // Shadowing a built-in property.\n");
if (AttributeShouldBeOnInstance($interface, $attribute)) {
push(@$outputArray, " return replaceStaticPropertySlot(vm, &thisObject, Identifier::fromString(vm, reinterpret_cast<const LChar*>(\"${id}\"), strlen(\"${id}\")), value);\n");
} else {
push(@$outputArray, " return thisObject.putDirect(vm, Identifier::fromString(vm, reinterpret_cast<const LChar*>(\"${id}\"), strlen(\"${id}\")), value);\n");
}
} elsif ($attribute->extendedAttributes->{PutForwards}) {
assert("[PutForwards] is not compatible with static attributes") if $attribute->isStatic;
# 3.5.9.1. Let Q be ? Get(O, id).
my $id = $attribute->name;
push(@$outputArray, " auto id = Identifier::fromString(vm, reinterpret_cast<const LChar*>(\"${id}\"), strlen(\"${id}\"));\n");
push(@$outputArray, " auto valueToForwardTo = thisObject.get(&state, id);\n");
push(@$outputArray, " RETURN_IF_EXCEPTION(throwScope, false);\n");
# 3.5.9.2. If Type(Q) is not Object, then throw a TypeError.
push(@$outputArray, " if (UNLIKELY(!valueToForwardTo.isObject())) {\n");
push(@$outputArray, " throwTypeError(&state, throwScope);\n");
push(@$outputArray, " return false;\n");
push(@$outputArray, " }\n");
# 3.5.9.3. Let forwardId be the identifier argument of the [PutForwards] extended attribute.
my $forwardId = $attribute->extendedAttributes->{PutForwards};
push(@$outputArray, " auto forwardId = Identifier::fromString(vm, reinterpret_cast<const LChar*>(\"${forwardId}\"), strlen(\"${forwardId}\"));\n");
# 3.5.9.4. Perform ? Set(Q, forwardId, V).
# FIXME: What should the second value to the PutPropertySlot be?
# (https://github.com/heycam/webidl/issues/368)
push(@$outputArray, " PutPropertySlot slot(valueToForwardTo, false);\n");
push(@$outputArray, " asObject(valueToForwardTo)->methodTable(vm)->put(asObject(valueToForwardTo), &state, forwardId, value, slot);\n");
push(@$outputArray, " RETURN_IF_EXCEPTION(throwScope, false);\n");
push(@$outputArray, " return true;\n");
} else {
push(@$outputArray, " auto& impl = thisObject.wrapped();\n") if !$attribute->isStatic;
if ($codeGenerator->IsEnumType($attribute->type)) {
# As per section 3.5.6 of https://heycam.github.io/webidl/#dfn-attribute-setter, enumerations do not use
# the standard conversion, but rather silently fail on invalid enumeration values.
push(@$outputArray, " auto optionalNativeValue = parseEnumeration<" . GetEnumerationClassName($attribute->type, $interface) . ">(state, value);\n");
push(@$outputArray, " RETURN_IF_EXCEPTION(throwScope, false);\n");
push(@$outputArray, " if (UNLIKELY(!optionalNativeValue))\n");
push(@$outputArray, " return false;\n");
push(@$outputArray, " auto nativeValue = optionalNativeValue.value();\n");
} else {
my $globalObjectReference = $attribute->isStatic ? "*jsCast<JSDOMGlobalObject*>(state->lexicalGlobalObject())" : "*thisObject.globalObject()";
my $exceptionThrower = GetAttributeExceptionThrower($interface, $attribute);
my $toNativeExpression = JSValueToNative($interface, $attribute, "value", $attribute->extendedAttributes->{Conditional}, "&state", "state", "thisObject", $globalObjectReference, $exceptionThrower);
push(@$outputArray, " auto nativeValue = ${toNativeExpression};\n");
push(@$outputArray, " RETURN_IF_EXCEPTION(throwScope, false);\n");
}
my ($baseFunctionName, @arguments) = $codeGenerator->SetterExpression(\%implIncludes, $interface->type->name, $attribute);
push(@arguments, PassArgumentExpression("nativeValue", $attribute));
my $functionName = GetFullyQualifiedImplementationCallName($interface, $attribute, $baseFunctionName, "impl", $conditional);
AddAdditionalArgumentsForImplementationCall(\@arguments, $interface, $attribute, "impl", "state", "thisObject");
unshift(@arguments, GenerateCallWithUsingReferences($attribute->extendedAttributes->{SetterCallWith}, $outputArray, "false", "thisObject"));
unshift(@arguments, GenerateCallWithUsingReferences($attribute->extendedAttributes->{CallWith}, $outputArray, "false", "thisObject"));
my $callTracingCallback = $attribute->extendedAttributes->{CallTracingCallback} || $interface->extendedAttributes->{CallTracingCallback};
if ($callTracingCallback) {
my $indent = " ";
my @callTracerArguments = ("nativeValue");
GenerateCallTracer($outputArray, $callTracingCallback, $attribute->name, \@callTracerArguments, $indent);
}
my $functionString = "${functionName}(" . join(", ", @arguments) . ")";
push(@$outputArray, " AttributeSetter::call(state, throwScope, [&] {\n");
push(@$outputArray, " return $functionString;\n");
push(@$outputArray, " });\n");
push(@$outputArray, " return true;\n");
}
push(@$outputArray, "}\n\n");
}
sub GenerateAttributeSetterTrampolineDefinition
{
my ($outputArray, $interface, $className, $attribute, $attributeSetterName, $attributeSetterBodyName, $conditional) = @_;
AddToImplIncludes("JSDOMAttribute.h", $conditional);
my $callAttributeSetterName = "set";
$callAttributeSetterName .= "Static" if $attribute->isStatic;
my @templateParameters = ();
push(@templateParameters, $attributeSetterBodyName);
push(@templateParameters, "CastedThisErrorBehavior::ReturnEarly") if $attribute->extendedAttributes->{LenientThis};
push(@$outputArray, "bool ${attributeSetterName}(ExecState* state, EncodedJSValue thisValue, EncodedJSValue encodedValue)\n");
push(@$outputArray, "{\n");
push(@$outputArray, " return IDLAttribute<${className}>::${callAttributeSetterName}<" . join(", ", @templateParameters) . ">(*state, thisValue, encodedValue, \"" . $attribute->name . "\");\n");
push(@$outputArray, "}\n\n");
}
sub GenerateAttributeSetterDefinition
{
my ($outputArray, $interface, $className, $attribute) = @_;
return if IsReadonly($attribute);
return if IsJSBuiltin($interface, $attribute);
my $conditional = $attribute->extendedAttributes->{Conditional};
if ($conditional) {
my $conditionalString = $codeGenerator->GenerateConditionalStringFromAttributeValue($conditional);
push(@$outputArray, "#if ${conditionalString}\n");;
}
my $readWriteConditional = $attribute->extendedAttributes->{ConditionallyReadWrite};
if ($readWriteConditional) {
my $conditionalString = $codeGenerator->GenerateConditionalStringFromAttributeValue($readWriteConditional);
push(@$outputArray, "#if ${conditionalString}\n");;
}
my $attributeSetterName = GetAttributeSetterName($interface, $className, $attribute);
my $attributeSetterBodyName = $attributeSetterName . "Setter";
GenerateAttributeSetterBodyDefinition($outputArray, $interface, $className, $attribute, $attributeSetterBodyName, $conditional);
GenerateAttributeSetterTrampolineDefinition($outputArray, $interface, $className, $attribute, $attributeSetterName, $attributeSetterBodyName, $conditional);
push(@$outputArray, "#endif\n\n") if $readWriteConditional;
push(@$outputArray, "#endif\n\n") if $conditional;
}
sub GenerateOperationTrampolineDefinition
{
my ($outputArray, $interface, $className, $operation, $functionName, $functionBodyName) = @_;
my $hasPromiseReturnType = $codeGenerator->IsPromiseType($operation->type);
my $idlOperationType = $hasPromiseReturnType ? "IDLOperationReturningPromise" : "IDLOperation";
my $exposureScope = $interface->extendedAttributes->{Exposed} ? "WindowOrWorker" : "WindowOnly";
my $callFunctionName = "call";
$callFunctionName .= "Static" if $operation->isStatic;
$callFunctionName .= "ReturningOwnPromise" if $hasPromiseReturnType && $operation->extendedAttributes->{ReturnsOwnPromise};
my @callFunctionTemplateArguments = ();
push(@callFunctionTemplateArguments, $functionBodyName);
push(@callFunctionTemplateArguments, "PromiseExecutionScope::${exposureScope}") if $hasPromiseReturnType && !$operation->extendedAttributes->{ReturnsOwnPromise};
push(@callFunctionTemplateArguments, "CastedThisErrorBehavior::Assert") if ($operation->extendedAttributes->{PrivateIdentifier} and not $operation->extendedAttributes->{PublicIdentifier});
push(@$outputArray, "EncodedJSValue JSC_HOST_CALL ${functionName}(JSGlobalObject* globalObject, CallFrame* state)\n");
push(@$outputArray, "{\n");
push(@$outputArray, " UNUSED_PARAM(globalObject);\n");
push(@$outputArray, " return ${idlOperationType}<${className}>::${callFunctionName}<" . join(", ", @callFunctionTemplateArguments) . ">(*state, \"" . $operation->name . "\");\n");
push(@$outputArray, "}\n\n");
}
sub GenerateOperationBodyDefinition
{
my ($outputArray, $interface, $className, $operation, $functionName, $functionImplementationName, $functionBodyName, $generatingOverloadDispatcher) = @_;
my $hasPromiseReturnType = $codeGenerator->IsPromiseType($operation->type);
my $idlOperationType = $hasPromiseReturnType ? "IDLOperationReturningPromise" : "IDLOperation";
my $conditional = $operation->extendedAttributes->{Conditional};
my @signatureArguments = ();
push(@signatureArguments, "JSC::ExecState* state");
push(@signatureArguments, "typename ${idlOperationType}<${className}>::ClassParameter castedThis") if !$operation->isStatic;
push(@signatureArguments, "Ref<DeferredPromise>&& promise") if $hasPromiseReturnType && !$operation->extendedAttributes->{ReturnsOwnPromise};
push(@signatureArguments, "JSC::ThrowScope& throwScope");
push(@$outputArray, "static inline JSC::EncodedJSValue ${functionBodyName}(" . join(", ", @signatureArguments) . ")\n");
push(@$outputArray, "{\n");
push(@$outputArray, " UNUSED_PARAM(state);\n");
push(@$outputArray, " UNUSED_PARAM(throwScope);\n");
if (!$generatingOverloadDispatcher) {
GenerateCustomElementReactionsStackIfNeeded($outputArray, $operation, "*state");
if ($interface->extendedAttributes->{CheckSecurity} and !$operation->extendedAttributes->{DoNotCheckSecurity}) {
assert("Security checks are not supported for static operations.") if $operation->isStatic;
AddToImplIncludes("JSDOMBindingSecurity.h", $conditional);
if ($interface->type->name eq "DOMWindow") {
push(@$outputArray, " if (!BindingSecurity::shouldAllowAccessToDOMWindow(state, castedThis->wrapped(), ThrowSecurityError))\n");
push(@$outputArray, " return JSValue::encode(jsUndefined());\n");
} else {
push(@$outputArray, " if (!BindingSecurity::shouldAllowAccessToDOMWindow(state, castedThis->wrapped().window(), ThrowSecurityError))\n");
push(@$outputArray, " return JSValue::encode(jsUndefined());\n");
}
}
}
my $indent = " ";
if ($generatingOverloadDispatcher) {
push(@$outputArray, " VM& vm = state->vm();\n");
push(@$outputArray, " UNUSED_PARAM(vm);\n");
my @argumentsToForward = ();
push(@argumentsToForward, "state");
push(@argumentsToForward, "castedThis") if !$operation->isStatic;
push(@argumentsToForward, "WTFMove(promise)") if $hasPromiseReturnType && !$operation->extendedAttributes->{ReturnsOwnPromise};
push(@argumentsToForward, "throwScope");
GenerateOverloadDispatcher($operation, $interface, $functionName, "Body", join(", ", @argumentsToForward));
} elsif (HasCustomMethod($operation)) {
GenerateImplementationCustomFunctionCall($outputArray, $operation, $interface, $className, $functionImplementationName, $indent);
} else {
if (!$operation->isMapLike && !$operation->isStatic) {
push(@$outputArray, " auto& impl = castedThis->wrapped();\n");
}
GenerateArgumentsCountCheck($outputArray, $operation, $interface, $indent);
my $functionString = GenerateParametersCheck($outputArray, $operation, $interface, $functionImplementationName, $indent);
if ($operation->extendedAttributes->{ResultField}) {
my $resultName = $operation->extendedAttributes->{ResultField};
push(@$outputArray, " auto implResult = $functionString;\n");
GenerateImplementationFunctionCall($outputArray, $operation, $interface, "WTFMove(implResult.$resultName)", $indent);
} else {
GenerateImplementationFunctionCall($outputArray, $operation, $interface, $functionString, $indent);
}
}
push(@$outputArray, "}\n\n");
}
sub GenerateOperationDefinition
{
my ($outputArray, $interface, $className, $operation) = @_;
return if IsJSBuiltin($interface, $operation);
return if $operation->isIterable;
return if $operation->isSerializer;
my $isCustom = HasCustomMethod($operation);
my $isOverloaded = $operation->{overloads} && @{$operation->{overloads}} > 1;
assert("[Custom] is not supported for overloaded operations.") if $isCustom && $isOverloaded;
my $inAppleCopyright = 0;
if ($operation->extendedAttributes->{AppleCopyright}) {
if (!$inAppleCopyright) {
push(@$outputArray, $beginAppleCopyrightForSourceFiles);
$inAppleCopyright = 1;
}
} elsif ($inAppleCopyright) {
push(@$outputArray, $endAppleCopyright);
$inAppleCopyright = 0;
}
my $conditional = $operation->extendedAttributes->{Conditional};
if ($conditional) {
my $conditionalString = $codeGenerator->GenerateConditionalStringFromAttributeValue($conditional);
push(@$outputArray, "#if ${conditionalString}\n");
}
my $hasPromiseReturnType = $codeGenerator->IsPromiseType($operation->type);
AddToImplIncludesForIDLType($operation->type, $conditional) unless $isCustom or $hasPromiseReturnType;
AddToImplIncludes("JSDOMOperation.h", $conditional) if !$hasPromiseReturnType;
AddToImplIncludes("JSDOMOperationReturningPromise.h", $conditional) if $hasPromiseReturnType;
my $functionName = GetFunctionName($interface, $className, $operation);
my $functionImplementationName = $operation->extendedAttributes->{ImplementedAs} || $codeGenerator->WK_lcfirst($operation->name);
my $functionBodyName = ($isOverloaded ? $functionName . $operation->{overloadIndex} : $functionName) . "Body";
GenerateOperationBodyDefinition($outputArray, $interface, $className, $operation, $functionName, $functionImplementationName, $functionBodyName);
# Overloaded operations don't generate a trampoline for each overload, and instead have a single dispatch trampoline
# that gets generated after the last overload body has been generated.
unless ($isOverloaded) {
GenerateOperationTrampolineDefinition($outputArray, $interface, $className, $operation, $functionName, $functionBodyName);
}
push(@$outputArray, "#endif\n\n") if $conditional;
# Generate a function dispatching call to the rest of the overloads.
if ($isOverloaded && $operation->{overloadIndex} == @{$operation->{overloads}}) {
my $overloadsConditionalAttribute = GetConditionalForOperationConsideringOverloads($operation);
my $overloadsConditionalString = $overloadsConditionalAttribute ? $codeGenerator->GenerateConditionalStringFromAttributeValue($overloadsConditionalAttribute) : undef;
push(@$outputArray, "#if ${overloadsConditionalString}\n\n") if $overloadsConditionalString;
my $overloadDispatcherFunctionBodyName = $functionName . "OverloadDispatcher";
GenerateOperationBodyDefinition($outputArray, $interface, $className, $operation, $functionName, $functionImplementationName, $overloadDispatcherFunctionBodyName, 1);
GenerateOperationTrampolineDefinition($outputArray, $interface, $className, $operation, $functionName, $overloadDispatcherFunctionBodyName);
push(@$outputArray, "#endif\n\n") if $overloadsConditionalString;
}
if ($operation->extendedAttributes->{DOMJIT}) {
if ($conditional) {
my $conditionalString = $codeGenerator->GenerateConditionalStringFromAttributeValue($conditional);
push(@$outputArray, "#if ${conditionalString}\n");
}
AddToImplIncludes("<JavaScriptCore/FrameTracers.h>", $conditional);
my $nameOfFunctionWithoutTypeCheck = $codeGenerator->WK_lcfirst($functionName) . "WithoutTypeCheck";
push(@$outputArray, "JSC::EncodedJSValue JIT_OPERATION ${nameOfFunctionWithoutTypeCheck}(JSC::ExecState* state, $className* castedThis");
foreach my $argument (@{$operation->arguments}) {
my $type = $argument->type;
my $argumentType = GetArgumentTypeForFunctionWithoutTypeCheck($interface, $type);
my $name = $argument->name;
my $encodedName = "encoded" . $codeGenerator->WK_ucfirst($name);
push(@$outputArray, ", ${argumentType} ${encodedName}");
}
push(@$outputArray, ")\n");
push(@$outputArray, "{\n");
push(@$outputArray, " UNUSED_PARAM(state);\n");
push(@$outputArray, " VM& vm = state->vm();\n");
push(@$outputArray, " JSC::NativeCallFrameTracer tracer(vm, state);\n");
push(@$outputArray, " auto throwScope = DECLARE_THROW_SCOPE(vm);\n");
push(@$outputArray, " UNUSED_PARAM(throwScope);\n");
push(@$outputArray, " auto& impl = castedThis->wrapped();\n");
my $implFunctionName = GetFullyQualifiedImplementationCallName($interface, $operation, $functionImplementationName, "impl", $conditional);
my @arguments = ();
AddAdditionalArgumentsForImplementationCall(\@arguments, $interface, $operation, "impl", "*state", "*castedThis");
foreach my $argument (@{$operation->arguments}) {
my $value = "";
my $type = $argument->type;
my $name = $argument->name;
my $encodedName = "encoded" . $codeGenerator->WK_ucfirst($name);
my $shouldPassByReference = ShouldPassArgumentByReference($argument);
my ($nativeValue, $mayThrowException) = ToNativeForFunctionWithoutTypeCheck($interface, $argument, $encodedName, $operation->extendedAttributes->{Conditional});
push(@$outputArray, " auto $name = ${nativeValue};\n");
push(@$outputArray, " RETURN_IF_EXCEPTION(throwScope, encodedJSValue());\n") if $mayThrowException;
$value = "WTFMove($name)";
if ($shouldPassByReference) {
$value = "*$name";
}
push(@arguments, $value);
}
my $functionString = "$implFunctionName(" . join(", ", @arguments) . ")";
$functionString = "propagateException(*state, throwScope, $functionString)" if NeedsExplicitPropagateExceptionCall($operation);
push(@$outputArray, " return JSValue::encode(" . NativeToJSValueUsingPointers($operation, $interface, $functionString, "*castedThis->globalObject()") . ");\n");
push(@$outputArray, "}\n\n");
push(@$outputArray, "#endif\n\n") if $conditional;
}
push(@$outputArray, $endAppleCopyright) if $inAppleCopyright;
}
sub GenerateSerializerDefinition
{
my ($interface, $className) = @_;
my $interfaceName = $interface->type->name;
my $parentSerializerInterface = 0;
if ($interface->serializable->hasInherit) {
$codeGenerator->ForAllParents($interface, sub {
my $parentInterface = shift;
if ($parentInterface->serializable && !$parentSerializerInterface) {
$parentSerializerInterface = $parentInterface;
}
}, 0);
die "Failed to find parent interface with \"serializer\" for \"inherit\" serializer in $interfaceName\n" if !$parentSerializerInterface;
}
my @serializedAttributes = ();
foreach my $attributeName (@{$interface->serializable->attributes}) {
my $foundAttribute = 0;
foreach my $attribute (@{$interface->attributes}) {
if ($attributeName eq $attribute->name) {
$foundAttribute = 1;
if ($codeGenerator->IsSerializableAttribute($interface, $attribute)) {
push(@serializedAttributes, $attribute);
last;
}
die "Explicit \"serializer\" attribute \"$attributeName\" is not serializable\n" if !$interface->serializable->hasAttribute;
last;
}
}
die "Failed to find \"serializer\" attribute \"$attributeName\" in $interfaceName\n" if !$foundAttribute;
}
my $serializerFunctionName = "toJSON";
my $serializerNativeFunctionName = $codeGenerator->WK_lcfirst($className) . "PrototypeFunction" . $codeGenerator->WK_ucfirst($serializerFunctionName);
AddToImplIncludes("<JavaScriptCore/ObjectConstructor.h>");
push(@implContent, "JSC::JSObject* JS${interfaceName}::serialize(ExecState& state, ${className}& thisObject, JSDOMGlobalObject& globalObject, ThrowScope& throwScope)\n");
push(@implContent, "{\n");
push(@implContent, " auto& vm = state.vm();\n");
if ($interface->serializable->hasInherit) {
my $parentSerializerInterfaceName = $parentSerializerInterface->type->name;
push(@implContent, " auto* result = JS${parentSerializerInterfaceName}::serialize(state, thisObject, globalObject, throwScope);\n");
} else {
push(@implContent, " auto* result = constructEmptyObject(&state, globalObject.objectPrototype());\n");
}
push(@implContent, "\n");
foreach my $attribute (@serializedAttributes) {
# FIXME: Attributes that throw exceptions are not supported with serializers yet.
my $name = $attribute->name;
my $getFunctionName = GetAttributeGetterName($interface, $className, $attribute);
push(@implContent, " auto ${name}Value = ${getFunctionName}Getter(state, thisObject, throwScope);\n");
push(@implContent, " throwScope.assertNoException();\n");
if ($codeGenerator->IsInterfaceType($attribute->type)) {
my $attributeInterfaceName = $attribute->type->name;
if ($attribute->type->isNullable) {
push(@implContent, " if (!${name}Value.isNull()) {\n");
push(@implContent, " auto* ${name}SerializedValue = JS${attributeInterfaceName}::serialize(state, *jsCast<JS${attributeInterfaceName}*>(${name}Value), globalObject, throwScope);\n");
push(@implContent, " result->putDirect(vm, Identifier::fromString(vm, \"${name}\"), ${name}SerializedValue);\n");
push(@implContent, " } else\n");
push(@implContent, " result->putDirect(vm, Identifier::fromString(vm, \"${name}\"), ${name}Value);\n");
} else {
push(@implContent, " auto* ${name}SerializedValue = JS${attributeInterfaceName}::serialize(state, *jsCast<JS${attributeInterfaceName}*>(${name}Value), globalObject, throwScope);\n");
push(@implContent, " result->putDirect(vm, Identifier::fromString(vm, \"${name}\"), ${name}SerializedValue);\n");
}
} else {
push(@implContent, " result->putDirect(vm, Identifier::fromString(vm, \"${name}\"), ${name}Value);\n");
}
push(@implContent, "\n");
}
push(@implContent, " return result;\n");
push(@implContent, "}\n");
push(@implContent, "\n");
push(@implContent, "static inline EncodedJSValue ${serializerNativeFunctionName}Body(ExecState* state, ${className}* thisObject, JSC::ThrowScope& throwScope)\n");
push(@implContent, "{\n");
push(@implContent, " return JSValue::encode(JS${interfaceName}::serialize(*state, *thisObject, *thisObject->globalObject(), throwScope));\n");
push(@implContent, "}\n");
push(@implContent, "\n");
push(@implContent, "EncodedJSValue JSC_HOST_CALL ${serializerNativeFunctionName}(JSGlobalObject* globalObject, CallFrame* state)\n");
push(@implContent, "{\n");
push(@implContent, " UNUSED_PARAM(globalObject);\n");
push(@implContent, " return IDLOperation<JS${interfaceName}>::call<${serializerNativeFunctionName}Body>(*state, \"${serializerFunctionName}\");\n");
push(@implContent, "}\n");
push(@implContent, "\n");
}
sub GenerateGetCallData
{
my ($outputArray, $interface, $className) = @_;
return if $interface->extendedAttributes->{CustomGetCallData};
if ($interface->extendedAttributes->{Plugin}) {
GeneratePluginCall($outputArray, $interface, $className);
} else {
GenerateLegacyCallerDefinitions($outputArray, $interface, $className);
}
}
sub GeneratePluginCall
{
my ($outputArray, $interface, $className) = @_;
AddToImplIncludes("JSPluginElementFunctions.h");
push(@$outputArray, "CallType ${className}::getCallData(JSCell* cell, CallData& callData)\n");
push(@$outputArray, "{\n");
push(@$outputArray, " auto* thisObject = jsCast<${className}*>(cell);\n");
push(@$outputArray, " ASSERT_GC_OBJECT_INHERITS(thisObject, info());\n\n");
push(@$outputArray, " return pluginElementCustomGetCallData(thisObject, callData);\n");
push(@$outputArray, "}\n");
push(@$outputArray, "\n");
}
sub GenerateLegacyCallerDefinitions
{
my ($outputArray, $interface, $className) = @_;
my @legacyCallers = @{$interface->{LegacyCallers}};
if (@legacyCallers > 1) {
foreach my $legacyCaller (@legacyCallers) {
GenerateLegacyCallerDefinition($outputArray, $interface, $className, $legacyCaller);
}
my $overloadFunctionPrefix = "call${className}";
push(@$outputArray, "EncodedJSValue JSC_HOST_CALL ${overloadFunctionPrefix}(JSGlobalObject* globalObject, CallFrame* state)\n");
push(@$outputArray, "{\n");
push(@$outputArray, " VM& vm = globalObject->vm();\n");
push(@$outputArray, " auto throwScope = DECLARE_THROW_SCOPE(vm);\n");
push(@$outputArray, " UNUSED_PARAM(throwScope);\n");
GenerateOverloadDispatcher($legacyCallers[0], $interface, $overloadFunctionPrefix, "", "globalObject, state");
push(@$outputArray, "}\n\n");
} else {
GenerateLegacyCallerDefinition($outputArray, $interface, $className, $legacyCallers[0]);
}
push(@$outputArray, "CallType ${className}::getCallData(JSCell*, CallData& callData)\n");
push(@$outputArray, "{\n");
push(@$outputArray, " callData.native.function = call${className};\n");
push(@$outputArray, " return CallType::Host;\n");
push(@$outputArray, "}\n");
push(@$outputArray, "\n");
}
sub GenerateLegacyCallerDefinition
{
my ($outputArray, $interface, $className, $operation) = @_;
my $isOverloaded = $operation->{overloads} && @{$operation->{overloads}} > 1;
if ($isOverloaded) {
push(@$outputArray, "static inline EncodedJSValue call${className}$operation->{overloadIndex}(JSGlobalObject* globalObject, CallFrame* state)\n");
} else {
push(@$outputArray, "static EncodedJSValue JSC_HOST_CALL call${className}(JSGlobalObject* globalObject, CallFrame* state)\n");
}
push(@$outputArray, "{\n");
push(@$outputArray, " VM& vm = globalObject->vm();\n");
push(@$outputArray, " auto throwScope = DECLARE_THROW_SCOPE(vm);\n");
push(@$outputArray, " UNUSED_PARAM(throwScope);\n");
my $indent = " ";
GenerateArgumentsCountCheck($outputArray, $operation, $interface, $indent);
push(@$outputArray, " auto* castedThis = jsCast<${className}*>(state->jsCallee());\n");
push(@$outputArray, " ASSERT(castedThis);\n");
push(@$outputArray, " auto& impl = castedThis->wrapped();\n");
my $functionImplementationName = $operation->extendedAttributes->{ImplementedAs} || $codeGenerator->WK_lcfirst($operation->name) || "legacyCallerOperationFromBindings";
my $functionString = GenerateParametersCheck($outputArray, $operation, $interface, $functionImplementationName, $indent);
GenerateImplementationFunctionCall($outputArray, $operation, $interface, $functionString, $indent);
push(@$outputArray, "}\n\n");
}
sub GenerateCallWithUsingReferences
{
my ($callWith, $outputArray, $returnValue, $thisReference, $indent) = @_;
my $statePointer = "&state";
my $stateReference = "state";
my $globalObject = "jsCast<JSDOMGlobalObject*>(state.lexicalGlobalObject())";
return GenerateCallWith($callWith, $outputArray, $returnValue, $returnValue, $statePointer, $stateReference, $globalObject, $globalObject, $thisReference, $indent);
}
# FIXME: We should remove GenerateCallWithUsingPointers and combine GenerateCallWithUsingReferences and GenerateCallWith
sub GenerateCallWithUsingPointers
{
my ($callWith, $outputArray, $returnValue, $thisReference, $indent) = @_;
my $statePointer = "state";
my $stateReference = "*state";
my $globalObject = "jsCast<JSDOMGlobalObject*>(state->lexicalGlobalObject())";
return GenerateCallWith($callWith, $outputArray, $returnValue, $returnValue, $statePointer, $stateReference, $globalObject, $globalObject, $thisReference, $indent);
}
sub GenerateConstructorCallWithUsingPointers
{
my ($callWith, $outputArray, $visibleInterfaceName, $thisReference, $indent) = @_;
my $statePointer = "state";
my $stateReference = "*state";
my $globalObject = "castedThis->globalObject()";
my $contextMissing = "throwConstructorScriptExecutionContextUnavailableError(*state, throwScope, \"${visibleInterfaceName}\")";
my $scriptExecutionContextAccessor = "castedThis";
return GenerateCallWith($callWith, $outputArray, "", $contextMissing, $statePointer, $stateReference, $globalObject, $scriptExecutionContextAccessor, $thisReference, $indent);
}
sub GenerateCallWith
{
my ($callWith, $outputArray, $returnValue, $contextMissing, $statePointer, $stateReference, $globalObject, $scriptExecutionContextAccessor, $thisReference, $indent) = @_;
return () unless $callWith;
$indent ||= " ";
my @callWithArgs;
push(@callWithArgs, $stateReference) if $codeGenerator->ExtendedAttributeContains($callWith, "ExecState");
push(@callWithArgs, "*${globalObject}") if $codeGenerator->ExtendedAttributeContains($callWith, "GlobalObject");
if ($codeGenerator->ExtendedAttributeContains($callWith, "ScriptExecutionContext")) {
push(@$outputArray, $indent . "auto* context = ${scriptExecutionContextAccessor}->scriptExecutionContext();\n");
push(@$outputArray, $indent . "if (UNLIKELY(!context))\n");
push(@$outputArray, $indent . " return" . ($contextMissing ? " " . $contextMissing : "") . ";\n");
push(@callWithArgs, "*context");
}
if ($codeGenerator->ExtendedAttributeContains($callWith, "Document")) {
AddToImplIncludes("Document.h");
push(@$outputArray, $indent . "auto* context = ${scriptExecutionContextAccessor}->scriptExecutionContext();\n");
push(@$outputArray, $indent . "if (UNLIKELY(!context))\n");
push(@$outputArray, $indent . " return" . ($contextMissing ? " " . $contextMissing : "") . ";\n");
push(@$outputArray, $indent . "ASSERT(context->isDocument());\n");
push(@$outputArray, $indent . "auto& document = downcast<Document>(*context);\n");
push(@callWithArgs, "document");
}
if ($codeGenerator->ExtendedAttributeContains($callWith, "IncumbentDocument")) {
AddToImplIncludes("DOMWindow.h");
AddToImplIncludes("JSDOMWindowBase.h");
push(@$outputArray, $indent . "auto* incumbentDocument = incumbentDOMWindow($stateReference).document();\n");
push(@$outputArray, $indent . "if (!incumbentDocument)\n");
push(@$outputArray, $indent . " return" . ($returnValue ? " " . $returnValue : "") . ";\n");
push(@callWithArgs, "*incumbentDocument");
}
if ($codeGenerator->ExtendedAttributeContains($callWith, "ResponsibleDocument")) {
AddToImplIncludes("DOMWindow.h");
AddToImplIncludes("JSDOMWindowBase.h");
push(@callWithArgs, "responsibleDocument($stateReference)");
}
if ($codeGenerator->ExtendedAttributeContains($callWith, "ActiveWindow")) {
AddToImplIncludes("DOMWindow.h");
AddToImplIncludes("JSDOMWindowBase.h");
push(@callWithArgs, "activeDOMWindow($stateReference)");
}
if ($codeGenerator->ExtendedAttributeContains($callWith, "FirstWindow")) {
AddToImplIncludes("DOMWindow.h");
AddToImplIncludes("JSDOMWindowBase.h");
push(@callWithArgs, "firstDOMWindow($stateReference)");
}
if ($codeGenerator->ExtendedAttributeContains($callWith, "IncumbentWindow")) {
AddToImplIncludes("DOMWindow.h");
AddToImplIncludes("JSDOMWindowBase.h");
push(@callWithArgs, "incumbentDOMWindow($stateReference)");
}
if ($codeGenerator->ExtendedAttributeContains($callWith, "RuntimeFlags")) {
push(@callWithArgs, "${globalObject}->runtimeFlags()");
}
if ($codeGenerator->ExtendedAttributeContains($callWith, "World")) {
push(@callWithArgs, "worldForDOMObject(${thisReference})");
}
return @callWithArgs;
}
sub GenerateArgumentsCountCheck
{
my ($outputArray, $operation, $interface, $indent) = @_;
# Overloaded operations don't need to check the argument count since the
# dispatch function does for them.
return if $operation->{overloads} && @{$operation->{overloads}} > 1;
my $numMandatoryArguments = @{$operation->arguments};
foreach my $argument (reverse(@{$operation->arguments})) {
if ($argument->isOptional or $argument->isVariadic) {
$numMandatoryArguments--;
} else {
last;
}
}
if ($numMandatoryArguments >= 1) {
push(@$outputArray, $indent . "if (UNLIKELY(state->argumentCount() < $numMandatoryArguments))\n");
push(@$outputArray, $indent . " return throwVMError(state, throwScope, createNotEnoughArgumentsError(state));\n");
}
}
my %automaticallyGeneratedDefaultValues = (
"any" => "undefined",
# toString() will convert undefined to the string "undefined";
# (note that this optimizes a behavior that is almost never useful)
"DOMString" => "\"undefined\"",
"USVString" => "\"undefined\"",
# JSValue::toBoolean() will convert undefined to false.
"boolean" => "false",
# JSValue::toInt*() / JSValue::toUint*() will convert undefined to 0.
"byte" => "0",
"long long" => "0",
"long" => "0",
"octet" => "0",
"short" => "0",
"unsigned long long" => "0",
"unsigned long" => "0",
"unsigned short" => "0",
# toNumber() / toFloat() convert undefined to NaN.
"double" => "NaN",
"float" => "NaN",
"unrestricted double" => "NaN",
"unrestricted float" => "NaN",
);
sub WillConvertUndefinedToDefaultParameterValue
{
my ($parameterType, $defaultValue) = @_;
my $automaticallyGeneratedDefaultValue = $automaticallyGeneratedDefaultValues{$parameterType->name};
return 1 if defined $automaticallyGeneratedDefaultValue && $automaticallyGeneratedDefaultValue eq $defaultValue;
return 1 if $defaultValue eq "null" && $codeGenerator->IsWrapperType($parameterType);
return 1 if $defaultValue eq "[]" && $codeGenerator->IsDictionaryType($parameterType);
return 0;
}
sub NeedsExplicitPropagateExceptionCall
{
my ($operation) = @_;
return 0 unless $operation->extendedAttributes->{MayThrowException};
return $operation->type && ($operation->type->name eq "void" || $codeGenerator->IsPromiseType($operation->type) || OperationHasForcedReturnValue($operation));
}
sub GenerateParametersCheck
{
my ($outputArray, $operation, $interface, $functionImplementationName, $indent) = @_;
my $interfaceName = $interface->type->name;
my $visibleInterfaceName = $codeGenerator->GetVisibleInterfaceName($interface);
my $numArguments = @{$operation->arguments};
my $conditional = $operation->extendedAttributes->{Conditional};
my $isConstructor = $operation->extendedAttributes->{Constructor} || $operation->extendedAttributes->{NamedConstructor};
my $functionName = GetFullyQualifiedImplementationCallName($interface, $operation, $functionImplementationName, "impl", $conditional);
my @arguments = ();
AddAdditionalArgumentsForImplementationCall(\@arguments, $interface, $operation, "impl", "*state", "*castedThis");
my $quotedFunctionName;
if (!$isConstructor) {
my $name = $operation->name;
$quotedFunctionName = "\"$name\"";
push(@arguments, GenerateCallWithUsingPointers($operation->extendedAttributes->{CallWith}, \@$outputArray, "JSValue::encode(jsUndefined())", "*castedThis"));
} else {
$quotedFunctionName = "nullptr";
push(@arguments, GenerateConstructorCallWithUsingPointers($operation->extendedAttributes->{ConstructorCallWith}, \@$outputArray, $visibleInterfaceName, "*castedThis"));
}
my $argumentIndex = 0;
foreach my $argument (@{$operation->arguments}) {
my $type = $argument->type;
assert "Optional arguments of non-nullable wrapper types are not supported (" . $operation->name . ")" if $argument->isOptional && !$type->isNullable && $codeGenerator->IsWrapperType($type);
if ($argument->isOptional && !defined($argument->default)) {
# As per Web IDL, optional dictionary arguments are always considered to have a default value of an empty dictionary, unless otherwise specified.
$argument->default("[]") if $codeGenerator->IsDictionaryType($type);
# Treat undefined the same as an empty sequence Or frozen array.
$argument->default("[]") if $codeGenerator->IsSequenceOrFrozenArrayType($type);
# We use undefined as default value for optional arguments of type 'any' unless specified otherwise.
$argument->default("undefined") if $type->name eq "any";
# We use the null string as default value for arguments of type DOMString unless specified otherwise.
$argument->default("null") if $codeGenerator->IsStringType($type);
# As per Web IDL, passing undefined for a nullable argument is treated as null. Therefore, use null as
# default value for nullable arguments unless otherwise specified.
$argument->default("null") if $type->isNullable;
# For callback arguments, the generated bindings treat undefined as null, so use null as implicit default value.
$argument->default("null") if $codeGenerator->IsCallbackInterface($type) || $codeGenerator->IsCallbackFunction($type);
}
my $name = $argument->name;
my $value = $name;
if ($argument->isVariadic) {
AddToImplIncludes("JSDOMConvertVariadic.h", $conditional);
AddToImplIncludesForIDLType($type, $conditional);
my $IDLType = GetIDLType($interface, $type);
push(@$outputArray, $indent . "auto ${name} = convertVariadicArguments<${IDLType}>(*state, ${argumentIndex});\n");
push(@$outputArray, $indent . "RETURN_IF_EXCEPTION(throwScope, encodedJSValue());\n");
$value = "WTFMove(${name})";
} else {
my $argumentLookupForConversion;
my $optionalCheck;
my $nativeValueCastFunction;
if ($argument->isOptional) {
assert("[ReturnValue] is not supported for optional arguments") if $argument->extendedAttributes->{ReturnValue};
if (defined($argument->default)) {
if (WillConvertUndefinedToDefaultParameterValue($type, $argument->default)) {
$argumentLookupForConversion = "state->argument($argumentIndex)";
} else {
my $defaultValue = GenerateDefaultValue($interface, $argument, $argument->type, $argument->default);
$optionalCheck = "state->argument($argumentIndex).isUndefined() ? $defaultValue : ";
$argumentLookupForConversion = "state->uncheckedArgument($argumentIndex)"
}
} else {
my $argumentIDLType = GetIDLType($interface, $argument->type);
my $defaultValue;
if ($codeGenerator->IsPromiseType($argument->type)) {
$defaultValue = "nullptr";
} else {
$defaultValue = "Optional<Converter<$argumentIDLType>::ReturnType>()";
$nativeValueCastFunction = "Optional<Converter<$argumentIDLType>::ReturnType>";
}
$optionalCheck = "state->argument($argumentIndex).isUndefined() ? $defaultValue : ";
$argumentLookupForConversion = "state->uncheckedArgument($argumentIndex)";
}
} else {
if ($argument->extendedAttributes->{ReturnValue}) {
push(@$outputArray, $indent . "auto returnValue = state->uncheckedArgument($argumentIndex);\n");
$argumentLookupForConversion = "returnValue";
} else {
$argumentLookupForConversion = "state->uncheckedArgument($argumentIndex)";
}
}
my $globalObjectReference = $operation->isStatic ? "*jsCast<JSDOMGlobalObject*>(state->lexicalGlobalObject())" : "*castedThis->globalObject()";
my $argumentExceptionThrower = GetArgumentExceptionThrower($interface, $argument, $argumentIndex, $quotedFunctionName);
my $nativeValue = JSValueToNative($interface, $argument, $argumentLookupForConversion, $conditional, "state", "*state", "*castedThis", $globalObjectReference, $argumentExceptionThrower);
$nativeValue = "${nativeValueCastFunction}(" . $nativeValue . ")" if defined $nativeValueCastFunction;
$nativeValue = $optionalCheck . $nativeValue if defined $optionalCheck;
push(@$outputArray, $indent . "auto $name = ${nativeValue};\n");
push(@$outputArray, $indent . "RETURN_IF_EXCEPTION(throwScope, encodedJSValue());\n");
$value = PassArgumentExpression($name, $argument);
}
push(@arguments, $value);
$argumentIndex++;
}
push(@arguments, "WTFMove(promise)") if $operation->type && $codeGenerator->IsPromiseType($operation->type) && !$operation->extendedAttributes->{PromiseProxy};
my $functionString = "$functionName(" . join(", ", @arguments) . ")";
$functionString = "propagateException(*state, throwScope, $functionString)" if NeedsExplicitPropagateExceptionCall($operation);
return $functionString;
}
sub GenerateDictionaryHeader
{
my ($object, $dictionary, $className, $enumerations, $otherDictionaries) = @_;
# - Add default header template and header protection.
push(@headerContentHeader, GenerateHeaderContentHeader($dictionary));
$headerIncludes{"${className}.h"} = 1;
push(@headerContent, "\nnamespace WebCore {\n\n");
push(@headerContent, GenerateDictionaryHeaderContent($dictionary, $className));
push(@headerContent, GenerateEnumerationsHeaderContent($dictionary, $enumerations));
push(@headerContent, GenerateDictionariesHeaderContent($dictionary, $otherDictionaries)) if $otherDictionaries;
push(@headerContent, "} // namespace WebCore\n");
my $conditionalString = $codeGenerator->GenerateConditionalString($dictionary);
push(@headerContent, "\n#endif // ${conditionalString}\n") if $conditionalString;
# - Generate dependencies.
if ($writeDependencies) {
my @ancestors;
my $parentType = $dictionary->parentType;
while (defined($parentType)) {
push(@ancestors, $parentType->name) if $codeGenerator->IsExternalDictionaryType($parentType);
my $parentDictionary = $codeGenerator->GetDictionaryByType($parentType);
assert("Unable to find definition for dictionary named '" . $parentType->name . "'!") unless $parentDictionary;
$parentType = $parentDictionary->parentType;
}
push(@depsContent, "$className.h : ", join(" ", map { "$_.idl" } @ancestors), "\n");
push(@depsContent, map { "$_.idl :\n" } @ancestors);
}
}
sub GenerateDictionaryImplementation
{
my ($object, $dictionary, $className, $enumerations, $otherDictionaries) = @_;
# - Add default header template
push(@implContentHeader, GenerateImplementationContentHeader($dictionary));
push(@implContent, "\n\nnamespace WebCore {\n");
push(@implContent, "using namespace JSC;\n\n");
push(@implContent, GenerateDictionaryImplementationContent($dictionary, $className));
push(@implContent, GenerateEnumerationsImplementationContent($dictionary, $enumerations));
push(@implContent, GenerateDictionariesImplementationContent($dictionary, $otherDictionaries)) if $otherDictionaries;
push(@implContent, "} // namespace WebCore\n");
my $conditionalString = $codeGenerator->GenerateConditionalString($dictionary);
push(@implContent, "\n#endif // ${conditionalString}\n") if $conditionalString;
}
sub GenerateCallbackFunctionHeader
{
my ($object, $callbackFunction, $enumerations, $dictionaries) = @_;
push(@headerContentHeader, GenerateHeaderContentHeader($callbackFunction));
push(@headerContent, "\nnamespace WebCore {\n\n");
my @operations = ();
push(@operations, $callbackFunction->operation);
my @constants = ();
$object->GenerateCallbackHeaderContent($callbackFunction, \@operations, \@constants, \@headerContent, \%headerIncludes);
push(@headerContent, GenerateEnumerationsHeaderContent($callbackFunction, $enumerations));
push(@headerContent, GenerateDictionariesHeaderContent($callbackFunction, $dictionaries));
push(@headerContent, "} // namespace WebCore\n");
my $conditionalString = $codeGenerator->GenerateConditionalString($callbackFunction);
push(@headerContent, "\n#endif // ${conditionalString}\n") if $conditionalString;
}
sub GenerateCallbackFunctionImplementation
{
my ($object, $callbackFunction, $enumerations, $dictionaries) = @_;
push(@implContentHeader, GenerateImplementationContentHeader($callbackFunction));
push(@implContent, "\n\nnamespace WebCore {\n");
push(@implContent, "using namespace JSC;\n\n");
push(@implContent, GenerateEnumerationsImplementationContent($callbackFunction, $enumerations));
push(@implContent, GenerateDictionariesImplementationContent($callbackFunction, $dictionaries));
my @operations = ();
push(@operations, $callbackFunction->operation);
my @constants = ();
$object->GenerateCallbackImplementationContent($callbackFunction, \@operations, \@constants, \@implContent, \%implIncludes);
push(@implContent, "} // namespace WebCore\n");
my $conditionalString = $codeGenerator->GenerateConditionalString($callbackFunction);
push(@implContent, "\n#endif // ${conditionalString}\n") if $conditionalString;
}
sub GenerateCallbackInterfaceHeader
{
my ($object, $callbackInterface, $enumerations, $dictionaries) = @_;
push(@headerContentHeader, GenerateHeaderContentHeader($callbackInterface));
push(@headerContent, "\nnamespace WebCore {\n\n");
$object->GenerateCallbackHeaderContent($callbackInterface, $callbackInterface->operations, $callbackInterface->constants, \@headerContent, \%headerIncludes);
push(@headerContent, GenerateEnumerationsHeaderContent($callbackInterface, $enumerations));
push(@headerContent, GenerateDictionariesHeaderContent($callbackInterface, $dictionaries));
push(@headerContent, "} // namespace WebCore\n");
my $conditionalString = $codeGenerator->GenerateConditionalString($callbackInterface);
push(@headerContent, "\n#endif // ${conditionalString}\n") if $conditionalString;
}
sub GenerateCallbackInterfaceImplementation
{
my ($object, $callbackInterface, $enumerations, $dictionaries) = @_;
push(@implContentHeader, GenerateImplementationContentHeader($callbackInterface));
push(@implContent, "\n\nnamespace WebCore {\n");
push(@implContent, "using namespace JSC;\n\n");
push(@implContent, GenerateEnumerationsImplementationContent($callbackInterface, $enumerations));
push(@implContent, GenerateDictionariesImplementationContent($callbackInterface, $dictionaries));
$object->GenerateCallbackImplementationContent($callbackInterface, $callbackInterface->operations, $callbackInterface->constants, \@implContent, \%implIncludes);
push(@implContent, "} // namespace WebCore\n");
my $conditionalString = $codeGenerator->GenerateConditionalString($callbackInterface);
push(@implContent, "\n#endif // ${conditionalString}\n") if $conditionalString;
}
sub GenerateCallbackHeaderContent
{
my ($object, $interfaceOrCallback, $operations, $constants, $contentRef, $includesRef) = @_;
my $name = $interfaceOrCallback->type->name;
my $callbackDataType = $interfaceOrCallback->extendedAttributes->{IsWeakCallback} ? "JSCallbackDataWeak" : "JSCallbackDataStrong";
my $className = "JS${name}";
$includesRef->{"IDLTypes.h"} = 1;
$includesRef->{"JSCallbackData.h"} = 1;
$includesRef->{"<wtf/Forward.h>"} = 1;
$includesRef->{"${name}.h"} = 1;
my $exportMacro = GetExportMacroForJSClass($interfaceOrCallback);
push(@$contentRef, "class $exportMacro$className final : public ${name} {\n");
push(@$contentRef, "public:\n");
# The static create() method.
push(@$contentRef, " static Ref<$className> create(JSC::JSObject* callback, JSDOMGlobalObject* globalObject)\n");
push(@$contentRef, " {\n");
push(@$contentRef, " return adoptRef(*new ${className}(callback, globalObject));\n");
push(@$contentRef, " }\n\n");
push(@$contentRef, " virtual ScriptExecutionContext* scriptExecutionContext() const { return ContextDestructionObserver::scriptExecutionContext(); }\n\n");
push(@$contentRef, " virtual ~$className();\n");
push(@$contentRef, " ${callbackDataType}* callbackData() { return m_data; }\n");
push(@$contentRef, " static JSC::JSValue getConstructor(JSC::VM&, const JSC::JSGlobalObject*);\n") if @{$constants};
push(@$contentRef, " virtual bool operator==(const ${name}&) const override;\n\n") if $interfaceOrCallback->extendedAttributes->{CallbackNeedsOperatorEqual};
# Operations
my $numOperations = @{$operations};
if ($numOperations > 0) {
push(@$contentRef, "\n // Functions\n");
foreach my $operation (@{$operations}) {
my @arguments = ();
my $callbackThisObject = $operation->extendedAttributes->{CallbackThisObject};
if ($callbackThisObject) {
my $thisObjectType = $codeGenerator->ParseType($callbackThisObject);
my $IDLType = GetIDLType($interfaceOrCallback, $thisObjectType);
push(@arguments, "typename ${IDLType}::ParameterType thisObject");
}
foreach my $argument (@{$operation->arguments}) {
my $IDLType = GetIDLType($interfaceOrCallback, $argument->type);
push(@arguments, "typename ${IDLType}::ParameterType " . $argument->name);
}
my $nativeReturnType = "CallbackResult<typename " . GetIDLType($interfaceOrCallback, $operation->type) . "::ImplementationType>";
# FIXME: Change the default name (used for callback functions) to something other than handleEvent. It makes little sense.
my $functionName = $operation->name || "handleEvent";
push(@$contentRef, " ${nativeReturnType} ${functionName}(" . join(", ", @arguments) . ") override;\n");
}
}
push(@$contentRef, "\nprivate:\n");
push(@$contentRef, " ${className}(JSC::JSObject*, JSDOMGlobalObject*);\n\n");
if ($interfaceOrCallback->extendedAttributes->{IsWeakCallback}) {
push(@$contentRef, " bool hasCallback() const final { return m_data && m_data->callback(); }\n\n");
}
push(@$contentRef, " void visitJSFunction(JSC::SlotVisitor&) override;\n\n") if $interfaceOrCallback->extendedAttributes->{IsWeakCallback};
push(@$contentRef, " ${callbackDataType}* m_data;\n");
push(@$contentRef, "};\n\n");
# toJS().
push(@$contentRef, $exportMacro . "JSC::JSValue toJS(${name}&);\n");
push(@$contentRef, "inline JSC::JSValue toJS(${name}* impl) { return impl ? toJS(*impl) : JSC::jsNull(); }\n\n");
}
sub GenerateCallbackImplementationContent
{
my ($object, $interfaceOrCallback, $operations, $constants, $contentRef, $includesRef) = @_;
my $name = $interfaceOrCallback->type->name;
my $callbackDataType = $interfaceOrCallback->extendedAttributes->{IsWeakCallback} ? "JSCallbackDataWeak" : "JSCallbackDataStrong";
my $visibleName = $codeGenerator->GetVisibleInterfaceName($interfaceOrCallback);
my $className = "JS${name}";
$includesRef->{"ScriptExecutionContext.h"} = 1;
# Constructor
push(@$contentRef, "${className}::${className}(JSObject* callback, JSDOMGlobalObject* globalObject)\n");
if ($interfaceOrCallback->extendedAttributes->{CallbackNeedsOperatorEqual}) {
push(@$contentRef, " : ${name}(globalObject->scriptExecutionContext(), ${className}Type)\n");
} else {
push(@$contentRef, " : ${name}(globalObject->scriptExecutionContext())\n");
}
push(@$contentRef, " , m_data(new ${callbackDataType}(callback, globalObject, this))\n");
push(@$contentRef, "{\n");
push(@$contentRef, "}\n\n");
# Destructor
push(@$contentRef, "${className}::~${className}()\n");
push(@$contentRef, "{\n");
push(@$contentRef, " ScriptExecutionContext* context = scriptExecutionContext();\n");
push(@$contentRef, " // When the context is destroyed, all tasks with a reference to a callback\n");
push(@$contentRef, " // should be deleted. So if the context is 0, we are on the context thread.\n");
push(@$contentRef, " if (!context || context->isContextThread())\n");
push(@$contentRef, " delete m_data;\n");
push(@$contentRef, " else\n");
push(@$contentRef, " context->postTask(DeleteCallbackDataTask(m_data));\n");
push(@$contentRef, "#ifndef NDEBUG\n");
push(@$contentRef, " m_data = nullptr;\n");
push(@$contentRef, "#endif\n");
push(@$contentRef, "}\n\n");
if ($interfaceOrCallback->extendedAttributes->{CallbackNeedsOperatorEqual}) {
push(@$contentRef, "bool ${className}::operator==(const ${name}& other) const\n");
push(@$contentRef, "{\n");
push(@$contentRef, " if (other.type() != type())\n");
push(@$contentRef, " return false;\n");
push(@$contentRef, " return static_cast<const ${className}*>(&other)->m_data->callback() == m_data->callback();\n");
push(@$contentRef, "}\n\n");
}
# Constants.
my $numConstants = @{$constants};
if ($numConstants > 0) {
GenerateConstructorDeclaration($contentRef, $className, $interfaceOrCallback, $name);
my $hashSize = 0;
my $hashName = $className . "ConstructorTable";
my @hashKeys = ();
my @hashValue1 = ();
my @hashValue2 = ();
my @hashSpecials = ();
my %conditionals = ();
my %readWriteConditionals = ();
foreach my $constant (@{$constants}) {
my $name = $constant->name;
push(@hashKeys, $name);
push(@hashValue1, $constant->value);
push(@hashValue2, "0");
push(@hashSpecials, "JSC::PropertyAttribute::DontDelete | JSC::PropertyAttribute::ReadOnly | JSC::PropertyAttribute::ConstantInteger");
my $implementedBy = $constant->extendedAttributes->{ImplementedBy};
$implIncludes{"${implementedBy}.h"} = 1 if $implementedBy;
my $conditional = $constant->extendedAttributes->{Conditional};
$conditionals{$name} = $conditional if $conditional;
$hashSize++;
}
$object->GenerateHashTable($className, $hashName, $hashSize, \@hashKeys, \@hashSpecials, \@hashValue1, \@hashValue2, \%conditionals, \%readWriteConditionals, 1) if $hashSize > 0;
push(@$contentRef, $codeGenerator->GenerateCompileTimeCheckForEnumsIfNeeded($interfaceOrCallback));
GenerateConstructorDefinitions($contentRef, $className, "", $visibleName, $interfaceOrCallback);
push(@$contentRef, "JSValue ${className}::getConstructor(VM& vm, const JSGlobalObject* globalObject)\n");
push(@$contentRef, "{\n");
push(@$contentRef, " return getDOMConstructor<${className}Constructor>(vm, *jsCast<const JSDOMGlobalObject*>(globalObject));\n");
push(@$contentRef, "}\n\n");
}
# Operations
my $numOperations = @{$operations};
if ($numOperations > 0) {
foreach my $operation (@{$operations}) {
next if $operation->extendedAttributes->{Custom};
AddToIncludesForIDLType($operation->type, $includesRef);
my $nativeReturnType = "CallbackResult<typename " . GetIDLType($interfaceOrCallback, $operation->type) . "::ImplementationType>";
# FIXME: Change the default name (used for callback functions) to something other than handleEvent. It makes little sense.
my $functionName = $operation->name || "handleEvent";
my @arguments = ();
my $thisValue = "jsUndefined()";
my $callbackThisObject = $operation->extendedAttributes->{CallbackThisObject};
if ($callbackThisObject) {
my $thisObjectType = $codeGenerator->ParseType($callbackThisObject);
AddToIncludesForIDLType($thisObjectType, $includesRef, 1);
my $IDLType = GetIDLType($interfaceOrCallback, $thisObjectType);
push(@arguments, "typename ${IDLType}::ParameterType thisObject");
my $thisObjectArgument = IDLArgument->new();
$thisObjectArgument->type($thisObjectType);
$thisValue = NativeToJSValueUsingReferences($thisObjectArgument, $interfaceOrCallback, "thisObject", "globalObject");
}
foreach my $argument (@{$operation->arguments}) {
AddToIncludesForIDLType($argument->type, $includesRef, 1);
my $IDLType = GetIDLType($interfaceOrCallback, $argument->type);
push(@arguments, "typename ${IDLType}::ParameterType " . $argument->name);
}
push(@$contentRef, "${nativeReturnType} ${className}::${functionName}(" . join(", ", @arguments) . ")\n");
push(@$contentRef, "{\n");
# FIXME: This is needed for NodeFilter, which works even for disconnected iframes. We should investigate
# if that behavior is needed for other callbacks.
if (!$operation->extendedAttributes->{SkipCallbackInvokeCheck}) {
push(@$contentRef, " if (!canInvokeCallback())\n");
push(@$contentRef, " return CallbackResultType::UnableToExecute;\n\n");
}
push(@$contentRef, " Ref<$className> protectedThis(*this);\n\n");
push(@$contentRef, " auto& globalObject = *m_data->globalObject();\n");
push(@$contentRef, " auto& vm = globalObject.vm();\n\n");
push(@$contentRef, " JSLockHolder lock(vm);\n");
push(@$contentRef, " auto& state = *globalObject.globalExec();\n");
push(@$contentRef, " JSValue thisValue = ${thisValue};\n");
push(@$contentRef, " MarkedArgumentBuffer args;\n");
foreach my $argument (@{$operation->arguments}) {
push(@$contentRef, " args.append(" . NativeToJSValueUsingReferences($argument, $interfaceOrCallback, $argument->name, "globalObject") . ");\n");
}
push(@$contentRef, " ASSERT(!args.hasOverflowed());\n");
push(@$contentRef, "\n NakedPtr<JSC::Exception> returnedException;\n");
my $callbackInvocation;
if (ref($interfaceOrCallback) eq "IDLCallbackFunction") {
$callbackInvocation = "m_data->invokeCallback(thisValue, args, JSCallbackData::CallbackType::Function, Identifier(), returnedException)";
} else {
my $callbackType = $numOperations > 1 ? "Object" : "FunctionOrObject";
$callbackInvocation = "m_data->invokeCallback(thisValue, args, JSCallbackData::CallbackType::${callbackType}, Identifier::fromString(vm, \"${functionName}\"), returnedException)";
}
if ($operation->type->name eq "void") {
push(@$contentRef, " ${callbackInvocation};\n");
} else {
push(@$contentRef, " auto jsResult = ${callbackInvocation};\n");
}
$includesRef->{"JSDOMExceptionHandling.h"} = 1;
push(@$contentRef, " if (returnedException) {\n");
if ($operation->extendedAttributes->{RethrowException}) {
push(@$contentRef, " auto throwScope = DECLARE_THROW_SCOPE(vm);\n");
push(@$contentRef, " throwException(&state, throwScope, returnedException);\n");
} else {
push(@$contentRef, " reportException(&state, returnedException);\n");
}
push(@$contentRef, " return CallbackResultType::ExceptionThrown;\n");
push(@$contentRef, " }\n\n");
if ($operation->type->name eq "void") {
push(@$contentRef, " return { };\n");
} else {
my $nativeValue = JSValueToNative($interfaceOrCallback, $operation, "jsResult", "", "&state", "state");
push(@$contentRef, " auto throwScope = DECLARE_THROW_SCOPE(vm);\n");
push(@$contentRef, " auto returnValue = ${nativeValue};\n");
push(@$contentRef, " RETURN_IF_EXCEPTION(throwScope, CallbackResultType::ExceptionThrown);\n");
push(@$contentRef, " return returnValue;\n");
}
push(@$contentRef, "}\n\n");
}
}
if ($interfaceOrCallback->extendedAttributes->{IsWeakCallback}) {
push(@$contentRef, "void ${className}::visitJSFunction(JSC::SlotVisitor& visitor)\n");
push(@$contentRef, "{\n");
push(@$contentRef, " m_data->visitJSFunction(visitor);\n");
push(@$contentRef, "}\n\n");
}
push(@$contentRef, "JSC::JSValue toJS(${name}& impl)\n");
push(@$contentRef, "{\n");
push(@$contentRef, " if (!static_cast<${className}&>(impl).callbackData())\n");
push(@$contentRef, " return jsNull();\n\n");
push(@$contentRef, " return static_cast<${className}&>(impl).callbackData()->callback();\n");
push(@$contentRef, "}\n\n");
}
sub GenerateImplementationFunctionCall
{
my ($outputArray, $operation, $interface, $functionString, $indent) = @_;
my $callTracingCallback = $operation->extendedAttributes->{CallTracingCallback} || $interface->extendedAttributes->{CallTracingCallback};
if ($callTracingCallback) {
my @callTracerArguments = map { $_->name } @{$operation->arguments};
GenerateCallTracer($outputArray, $callTracingCallback, $operation->name, \@callTracerArguments, $indent);
}
if (OperationHasForcedReturnValue($operation)) {
push(@$outputArray, $indent . "$functionString;\n");
push(@$outputArray, $indent . "return JSValue::encode(returnValue);\n");
} elsif ($operation->type->name eq "void" || ($codeGenerator->IsPromiseType($operation->type) && !$operation->extendedAttributes->{PromiseProxy})) {
push(@$outputArray, $indent . "$functionString;\n");
push(@$outputArray, $indent . "return JSValue::encode(jsUndefined());\n");
} else {
my $globalObjectReference = $operation->isStatic ? "*jsCast<JSDOMGlobalObject*>(state->lexicalGlobalObject())" : "*castedThis->globalObject()";
push(@$outputArray, $indent . "return JSValue::encode(" . NativeToJSValueUsingPointers($operation, $interface, $functionString, $globalObjectReference) . ");\n");
}
}
sub GenerateImplementationCustomFunctionCall
{
my ($outputArray, $operation, $interface, $className, $functionImplementationName, $indent) = @_;
my @customFunctionArguments = ();
push(@customFunctionArguments, "*state");
push(@customFunctionArguments, "WTFMove(promise)") if $codeGenerator->IsPromiseType($operation->type) && !$operation->extendedAttributes->{ReturnsOwnPromise};
if ($operation->isStatic) {
push(@$outputArray, $indent . "return JSValue::encode(${className}::" . $functionImplementationName . "(" . join(", ", @customFunctionArguments) . "));\n");
} else {
push(@$outputArray, $indent . "return JSValue::encode(castedThis->" . $functionImplementationName . "(" . join(", ", @customFunctionArguments) . "));\n");
}
}
sub IsValueIterableInterface
{
my $interface = shift;
return 0 unless $interface->iterable;
return 0 if length $interface->iterable->keyType;
# FIXME: See https://webkit.org/b/159140, we should die if the next check is false.
return 0 unless GetIndexedGetterOperation($interface);
return 1;
}
sub IsKeyValueIterableInterface
{
my $interface = shift;
return 0 unless $interface->iterable;
return 0 if IsValueIterableInterface($interface);
return 1;
}
sub GenerateIterableDefinition
{
my $interface = shift;
my $interfaceName = $interface->type->name;
my $className = "JS$interfaceName";
my $visibleInterfaceName = $codeGenerator->GetVisibleInterfaceName($interface);
AddToImplIncludes("JSDOMIterator.h");
return unless IsKeyValueIterableInterface($interface);
my $iteratorName = "${interfaceName}Iterator";
my $iteratorPrototypeName = "${interfaceName}IteratorPrototype";
my $iteratorTraitsName = "${interfaceName}IteratorTraits";
my $iteratorTraitsType = $interface->iterable->isKeyValue ? "JSDOMIteratorType::Map" : "JSDOMIteratorType::Set";
my $iteratorTraitsKeyType = $interface->iterable->isKeyValue ? GetIDLType($interface, $interface->iterable->keyType) : "void";
my $iteratorTraitsValueType = GetIDLType($interface, $interface->iterable->valueType);
push(@implContent, <<END);
struct ${iteratorTraitsName} {
static constexpr JSDOMIteratorType type = ${iteratorTraitsType};
using KeyType = ${iteratorTraitsKeyType};
using ValueType = ${iteratorTraitsValueType};
};
using ${iteratorName} = JSDOMIterator<${className}, ${iteratorTraitsName}>;
using ${iteratorPrototypeName} = JSDOMIteratorPrototype<${className}, ${iteratorTraitsName}>;
template<>
const JSC::ClassInfo ${iteratorName}::s_info = { "${visibleInterfaceName} Iterator", &Base::s_info, nullptr, nullptr, CREATE_METHOD_TABLE(${iteratorName}) };
template<>
const JSC::ClassInfo ${iteratorPrototypeName}::s_info = { "${visibleInterfaceName} Iterator", &Base::s_info, nullptr, nullptr, CREATE_METHOD_TABLE(${iteratorPrototypeName}) };
END
foreach my $operation (@{$interface->iterable->operations}) {
my $propertyName = $operation->name;
my $functionName = GetFunctionName($interface, $className, $operation);
next if $propertyName eq "[Symbol.Iterator]";
if ($propertyName eq "forEach") {
push(@implContent, <<END);
static inline EncodedJSValue ${functionName}Caller(ExecState* state, JS$interfaceName* thisObject, JSC::ThrowScope& throwScope)
{
return JSValue::encode(iteratorForEach<${iteratorName}>(*state, *thisObject, throwScope));
}
END
} else {
my $iterationKind = "KeyValue";
$iterationKind = "Key" if $propertyName eq "keys";
$iterationKind = "Value" if $propertyName eq "values";
$iterationKind = "Value" if $propertyName eq "entries" and not $interface->iterable->isKeyValue;
push(@implContent, <<END);
static inline EncodedJSValue ${functionName}Caller(ExecState*, JS$interfaceName* thisObject, JSC::ThrowScope&)
{
return JSValue::encode(iteratorCreate<${iteratorName}>(*thisObject, IterationKind::${iterationKind}));
}
END
}
push(@implContent, <<END);
JSC::EncodedJSValue JSC_HOST_CALL ${functionName}(JSC::JSGlobalObject* globalObject, JSC::CallFrame* state)
{
UNUSED_PARAM(globalObject);
return IDLOperation<${className}>::call<${functionName}Caller>(*state, "${propertyName}");
}
END
}
}
# http://heycam.github.io/webidl/#dfn-flattened-union-member-types
sub GetFlattenedMemberTypes
{
my ($idlUnionType) = @_;
my @flattenedMemberTypes = ();
foreach my $memberType (@{$idlUnionType->subtypes}) {
if ($memberType->isUnion) {
push(@flattenedMemberTypes, GetFlattenedMemberTypes($memberType));
} else {
push(@flattenedMemberTypes, $memberType);
}
}
return @flattenedMemberTypes;
}
# http://heycam.github.io/webidl/#dfn-number-of-nullable-member-types
sub GetNumberOfNullableMemberTypes
{
my ($idlUnionType) = @_;
my $count = 0;
foreach my $memberType (@{$idlUnionType->subtypes}) {
$count++ if $memberType->isNullable;
$count += GetNumberOfNullableMemberTypes($memberType) if $memberType->isUnion;
}
return $count;
}
sub GetIDLUnionMemberTypes
{
my ($interface, $idlUnionType) = @_;
my $numberOfNullableMembers = GetNumberOfNullableMemberTypes($idlUnionType);
assert("Union types must only have 0 or 1 nullable types.") if $numberOfNullableMembers > 1;
my @idlUnionMemberTypes = ();
push(@idlUnionMemberTypes, "IDLNull") if $numberOfNullableMembers == 1;
foreach my $memberType (GetFlattenedMemberTypes($idlUnionType)) {
push(@idlUnionMemberTypes, GetIDLTypeExcludingNullability($interface, $memberType));
}
return @idlUnionMemberTypes;
}
sub IsAnnotatedType
{
my ($type) = @_;
return 1 if $type->extendedAttributes->{Clamp};
return 1 if $type->extendedAttributes->{EnforceRange};
return 1 if $type->extendedAttributes->{TreatNullAs} && $type->extendedAttributes->{TreatNullAs} eq "EmptyString";
return 1 if $type->extendedAttributes->{AtomString};
return 1 if $type->extendedAttributes->{RequiresExistingAtomString};
}
sub GetAnnotatedIDLType
{
my ($type) = @_;
return "IDLClampAdaptor" if $type->extendedAttributes->{Clamp};
return "IDLEnforceRangeAdaptor" if $type->extendedAttributes->{EnforceRange};
return "IDLTreatNullAsEmptyAdaptor" if $type->extendedAttributes->{TreatNullAs} && $type->extendedAttributes->{TreatNullAs} eq "EmptyString";
return "IDLAtomStringAdaptor" if $type->extendedAttributes->{AtomString};
return "IDLRequiresExistingAtomStringAdaptor" if $type->extendedAttributes->{RequiresExistingAtomString};
}
sub GetBaseIDLType
{
my ($interface, $type) = @_;
if ($type->extendedAttributes->{OverrideIDLType}) {
return $type->extendedAttributes->{OverrideIDLType};
}
my %IDLTypes = (
"void" => "IDLVoid",
"any" => "IDLAny",
"boolean" => "IDLBoolean",
"byte" => "IDLByte",
"octet" => "IDLOctet",
"short" => "IDLShort",
"unsigned short" => "IDLUnsignedShort",
"long" => "IDLLong",
"unsigned long" => "IDLUnsignedLong",
"long long" => "IDLLongLong",
"unsigned long long" => "IDLUnsignedLongLong",
"float" => "IDLFloat",
"unrestricted float" => "IDLUnrestrictedFloat",
"double" => "IDLDouble",
"unrestricted double" => "IDLUnrestrictedDouble",
"DOMString" => "IDLDOMString",
"ByteString" => "IDLByteString",
"USVString" => "IDLUSVString",
"object" => "IDLObject",
"ArrayBuffer" => "IDLArrayBuffer",
"ArrayBufferView" => "IDLArrayBufferView",
"DataView" => "IDLDataView",
"Int8Array" => "IDLInt8Array",
"Int16Array" => "IDLInt16Array",
"Int32Array" => "IDLInt32Array",
"Uint8Array" => "IDLUint8Array",
"Uint16Array" => "IDLUint16Array",
"Uint32Array" => "IDLUint32Array",
"Uint8ClampedArray" => "IDLUint8ClampedArray",
"Float32Array" => "IDLFloat32Array",
"Float64Array" => "IDLFloat64Array",
# Non-WebIDL extensions
"Date" => "IDLDate",
"EventListener" => "IDLEventListener<JSEventListener>",
"JSON" => "IDLJSON",
"ScheduledAction" => "IDLScheduledAction",
"SerializedScriptValue" => "IDLSerializedScriptValue<SerializedScriptValue>",
"XPathNSResolver" => "IDLXPathNSResolver<XPathNSResolver>",
);
return $IDLTypes{$type->name} if exists $IDLTypes{$type->name};
return "IDLEnumeration<" . GetEnumerationClassName($type, $interface) . ">" if $codeGenerator->IsEnumType($type);
return "IDLDictionary<" . GetDictionaryClassName($type, $interface) . ">" if $codeGenerator->IsDictionaryType($type);
return "IDLSequence<" . GetIDLType($interface, @{$type->subtypes}[0]) . ">" if $codeGenerator->IsSequenceType($type);
return "IDLFrozenArray<" . GetIDLType($interface, @{$type->subtypes}[0]) . ">" if $codeGenerator->IsFrozenArrayType($type);
return "IDLRecord<" . GetIDLType($interface, @{$type->subtypes}[0]) . ", " . GetIDLType($interface, @{$type->subtypes}[1]) . ">" if $codeGenerator->IsRecordType($type);
return "IDLPromise<" . GetIDLType($interface, @{$type->subtypes}[0]) . ">" if $codeGenerator->IsPromiseType($type);
return "IDLUnion<" . join(", ", GetIDLUnionMemberTypes($interface, $type)) . ">" if $type->isUnion;
return "IDLCallbackFunction<" . GetCallbackClassName($type->name) . ">" if $codeGenerator->IsCallbackFunction($type);
return "IDLCallbackInterface<" . GetCallbackClassName($type->name) . ">" if $codeGenerator->IsCallbackInterface($type);
assert("Unknown type '" . $type->name . "'.\n") unless $codeGenerator->IsInterfaceType($type);
return "IDLInterface<" . $type->name . ">";
}
sub GetIDLTypeExcludingNullability
{
my ($interface, $type) = @_;
my $baseIDLType = GetBaseIDLType($interface, $type);
$baseIDLType = GetAnnotatedIDLType($type) . "<" . $baseIDLType . ">" if IsAnnotatedType($type);
return $baseIDLType;
}
sub GetIDLType
{
my ($interface, $type) = @_;
my $baseIDLType = GetIDLTypeExcludingNullability($interface, $type);
$baseIDLType = "IDLNullable<" . $baseIDLType . ">" if $type->isNullable;
return $baseIDLType;
}
sub ShouldPassArgumentByReference
{
my ($argument) = @_;
my $type = $argument->type;
return 0 if $type->isNullable;
return 0 if $codeGenerator->IsCallbackInterface($type);
return 0 if $codeGenerator->IsCallbackFunction($type);
return 0 if !$codeGenerator->IsWrapperType($type) && !$codeGenerator->IsBufferSourceType($type);
return 1;
}
sub JSValueToNativeDOMConvertNeedsThisObject
{
my $type = shift;
return 1 if $type->name eq "EventListener";
return 0;
}
sub JSValueToNativeDOMConvertNeedsGlobalObject
{
my $type = shift;
return 1 if $codeGenerator->IsCallbackInterface($type);
return 1 if $codeGenerator->IsCallbackFunction($type);
return JSValueToNativeDOMConvertNeedsGlobalObject(@{$type->subtypes}[1]) if $codeGenerator->IsRecordType($type);
return 1 if $type->name eq "ScheduledAction";
return 0;
}
sub IsValidContextForJSValueToNative
{
my $context = shift;
return (ref($context) eq "IDLAttribute" && !$codeGenerator->IsEnumType($context->type)) || ref($context) eq "IDLArgument" || ref($context) eq "IDLDictionaryMember" || ref($context) eq "IDLOperation";
}
sub JSValueToNative
{
my ($interface, $context, $value, $conditional, $statePointer, $stateReference, $thisObjectReference, $globalObjectReference, $exceptionThrower) = @_;
assert("Invalid context type") if !IsValidContextForJSValueToNative($context);
my $type = $context->type;
# FIXME: Remove these 3 variables when all JSValueToNative use references.
$statePointer = "state" unless $statePointer;
$stateReference = "*state" unless $stateReference;
$thisObjectReference = "*castedThis" unless $thisObjectReference;
AddToImplIncludesForIDLType($type, $conditional);
AddToImplIncludes("JSDOMGlobalObject.h", $conditional) if JSValueToNativeDOMConvertNeedsGlobalObject($type);
my $IDLType = GetIDLType($interface, $type);
my @conversionArguments = ();
push(@conversionArguments, $stateReference);
push(@conversionArguments, $value);
push(@conversionArguments, $thisObjectReference) if JSValueToNativeDOMConvertNeedsThisObject($type);
push(@conversionArguments, $globalObjectReference) if JSValueToNativeDOMConvertNeedsGlobalObject($type);
push(@conversionArguments, $exceptionThrower) if $exceptionThrower;
return "convert<$IDLType>(" . join(", ", @conversionArguments) . ")";
}
sub ToNativeForFunctionWithoutTypeCheck
{
my ($interface, $context, $value, $conditional, $statePointer, $stateReference, $thisObjectReference) = @_;
assert("Invalid context type") if !IsValidContextForJSValueToNative($context);
my $type = $context->type;
# FIXME: Remove these 3 variables when all JSValueToNative use references.
$statePointer = "state" unless $statePointer;
$stateReference = "*state" unless $stateReference;
$thisObjectReference = "*castedThis" unless $thisObjectReference;
AddToImplIncludesForIDLType($type, $conditional);
# FIXME: Support more types.
AddToImplIncludes("DOMJITIDLConvert.h");
my $IDLType = GetIDLType($interface, $type);
my @conversionArguments = ();
push(@conversionArguments, "$stateReference");
push(@conversionArguments, "$value");
return ("DOMJIT::DirectConverter<$IDLType>::directConvert(" . join(", ", @conversionArguments) . ")", 1);
}
sub NativeToJSValueDOMConvertNeedsState
{
my ($type) = @_;
# FIXME: We need a more robust way to specify this requirement so as not
# to require specializing each type. Perhaps just requiring all override
# types to take both state and the global object would work?
if ($type->extendedAttributes->{OverrideIDLType}) {
my $overrideTypeName = $type->extendedAttributes->{OverrideIDLType};
return 1 if $overrideTypeName eq "IDLIDBKey";
return 1 if $overrideTypeName eq "IDLWebGLAny";
return 1 if $overrideTypeName eq "IDLWebGLExtension";
return 0;
}
# FIXME: This should actually check if all the sub-objects of the union need the state.
return 1 if $type->isUnion;
return 1 if $codeGenerator->IsSequenceOrFrozenArrayType($type);
return 1 if $codeGenerator->IsRecordType($type);
return 1 if $codeGenerator->IsStringType($type);
return 1 if $codeGenerator->IsEnumType($type);
return 1 if $codeGenerator->IsDictionaryType($type);
return 1 if $codeGenerator->IsInterfaceType($type);
return 1 if $codeGenerator->IsBufferSourceType($type);
return 1 if $codeGenerator->IsPromiseType($type);
return 1 if $type->name eq "Date";
return 1 if $type->name eq "JSON";
return 1 if $type->name eq "SerializedScriptValue";
return 1 if $type->name eq "XPathNSResolver";
return 0;
}
sub NativeToJSValueDOMConvertNeedsGlobalObject
{
my ($type) = @_;
# FIXME: We need a more robust way to specify this requirement so as not
# to require specializing each type. Perhaps just requiring all override
# types to take both state and the global object would work?
if ($type->extendedAttributes->{OverrideIDLType}) {
my $overrideTypeName = $type->extendedAttributes->{OverrideIDLType};
return 1 if $overrideTypeName eq "IDLIDBKey";
return 1 if $overrideTypeName eq "IDLWebGLAny";
return 1 if $overrideTypeName eq "IDLWebGLExtension";
return 0;
}
# FIXME: This should actually check if all the sub-objects of the union need the global object.
return 1 if $type->isUnion;
return 1 if $codeGenerator->IsSequenceOrFrozenArrayType($type);
return 1 if $codeGenerator->IsRecordType($type);
return 1 if $codeGenerator->IsDictionaryType($type);
return 1 if $codeGenerator->IsInterfaceType($type);
return 1 if $codeGenerator->IsBufferSourceType($type);
return 1 if $codeGenerator->IsPromiseType($type);
return 1 if $type->name eq "SerializedScriptValue";
return 1 if $type->name eq "XPathNSResolver";
return 0;
}
sub NativeToJSValueUsingReferences
{
my ($context, $interface, $value, $globalObjectReference) = @_;
return NativeToJSValue($context, $interface, $value, "state", $globalObjectReference);
}
# FIXME: We should remove NativeToJSValueUsingPointers and combine NativeToJSValueUsingReferences and NativeToJSValue
sub NativeToJSValueUsingPointers
{
my ($context, $interface, $value, $globalObjectReference) = @_;
return NativeToJSValue($context, $interface, $value, "*state", $globalObjectReference);
}
sub IsValidContextForNativeToJSValue
{
my $context = shift;
return ref($context) eq "IDLAttribute" || ref($context) eq "IDLArgument" || ref($context) eq "IDLDictionaryMember" || ref($context) eq "IDLOperation";
}
sub NativeToJSValue
{
my ($context, $interface, $value, $stateReference, $globalObjectReference) = @_;
assert("Invalid context type") if !IsValidContextForNativeToJSValue($context);
my $conditional = $context->extendedAttributes->{Conditional};
my $type = $context->type;
my $mayThrowException = ref($context) eq "IDLAttribute" || $context->extendedAttributes->{MayThrowException};
# We could instead overload a function to work with optional as well as non-optional numbers, but this
# is slightly better because it guarantees we will fail to compile if the IDL file doesn't match the C++.
if ($context->extendedAttributes->{Reflect} and ($type->name eq "unsigned long" or $type->name eq "unsigned short")) {
$value =~ s/getUnsignedIntegralAttribute/getIntegralAttribute/g;
$value = "std::max(0, $value)";
}
AddToImplIncludesForIDLType($type, $conditional);
AddToImplIncludes("JSDOMGlobalObject.h", $conditional) if NativeToJSValueDOMConvertNeedsGlobalObject($type);
if ($context->extendedAttributes->{CheckSecurityForNode}) {
AddToImplIncludes("JSDOMBindingSecurity.h", $conditional);
$value = "BindingSecurity::checkSecurityForNode($stateReference, $value)";
}
my $IDLType = GetIDLType($interface, $type);
my @conversionArguments = ();
push(@conversionArguments, $stateReference) if NativeToJSValueDOMConvertNeedsState($type) || $mayThrowException;
push(@conversionArguments, $globalObjectReference) if NativeToJSValueDOMConvertNeedsGlobalObject($type);
push(@conversionArguments, "throwScope") if $mayThrowException;
push(@conversionArguments, $value);
my $functionName = $context->extendedAttributes->{NewObject} ? "toJSNewlyCreated" : "toJS";
return "${functionName}<${IDLType}>(" . join(", ", @conversionArguments) . ")";
}
sub ceilingToPowerOf2
{
my ($size) = @_;
my $powerOf2 = 1;
while ($size > $powerOf2) {
$powerOf2 <<= 1;
}
return $powerOf2;
}
# Internal Helper
sub GenerateHashTableValueArray
{
my $keys = shift;
my $specials = shift;
my $value1 = shift;
my $value2 = shift;
my $conditionals = shift;
my $readWriteConditionals = shift;
my $nameEntries = shift;
my $packedSize = scalar @{$keys};
push(@implContent, "\nstatic const HashTableValue $nameEntries\[\] =\n\{\n");
my $hasSetter = "false";
my $i = 0;
foreach my $key (@{$keys}) {
my $firstTargetType;
my $secondTargetType = "";
my $conditional;
if ($conditionals) {
$conditional = $conditionals->{$key};
}
if ($conditional) {
my $conditionalString = $codeGenerator->GenerateConditionalStringFromAttributeValue($conditional);
push(@implContent, "#if ${conditionalString}\n");
}
if ("@$specials[$i]" =~ m/DOMJITFunction/) {
$firstTargetType = "static_cast<RawNativeFunction>";
$secondTargetType = "static_cast<const JSC::DOMJIT::Signature*>";
} elsif ("@$specials[$i]" =~ m/Function/) {
$firstTargetType = "static_cast<RawNativeFunction>";
} elsif ("@$specials[$i]" =~ m/Builtin/) {
$firstTargetType = "static_cast<BuiltinGenerator>";
} elsif ("@$specials[$i]" =~ m/ConstantInteger/) {
$firstTargetType = "";
} elsif ("@$specials[$i]" =~ m/DOMJITAttribute/) {
$firstTargetType = "static_cast<const JSC::DOMJIT::GetterSetter*>";
} else {
$firstTargetType = "static_cast<PropertySlot::GetValueFunc>";
$secondTargetType = "static_cast<PutPropertySlot::PutValueFunc>";
$hasSetter = "true";
}
if ("@$specials[$i]" =~ m/ConstantInteger/) {
push(@implContent, " { \"$key\", @$specials[$i], NoIntrinsic, { (long long)" . $firstTargetType . "(@$value1[$i]) } },\n");
} else {
my $readWriteConditional = $readWriteConditionals ? $readWriteConditionals->{$key} : undef;
if ($readWriteConditional) {
my $readWriteConditionalString = $codeGenerator->GenerateConditionalStringFromAttributeValue($readWriteConditional);
push(@implContent, "#if ${readWriteConditionalString}\n");
}
push(@implContent, " { \"$key\", @$specials[$i], NoIntrinsic, { (intptr_t)" . $firstTargetType . "(@$value1[$i]), (intptr_t) " . $secondTargetType . "(@$value2[$i]) } },\n");
if ($readWriteConditional) {
push(@implContent, "#else\n") ;
push(@implContent, " { \"$key\", JSC::PropertyAttribute::ReadOnly | @$specials[$i], NoIntrinsic, { (intptr_t)" . $firstTargetType . "(@$value1[$i]), (intptr_t) static_cast<PutPropertySlot::PutValueFunc>(0) } },\n");
push(@implContent, "#endif\n");
}
}
if ($conditional) {
push(@implContent, "#else\n");
push(@implContent, " { 0, 0, NoIntrinsic, { 0, 0 } },\n");
push(@implContent, "#endif\n");
}
++$i;
}
push(@implContent, " { 0, 0, NoIntrinsic, { 0, 0 } }\n") if (!$packedSize);
push(@implContent, "};\n\n");
return $hasSetter;
}
sub GenerateHashTable
{
my $object = shift;
my $className = shift;
my $name = shift;
my $size = shift;
my $keys = shift;
my $specials = shift;
my $value1 = shift;
my $value2 = shift;
my $conditionals = shift;
my $readWriteConditionals = shift;
my $justGenerateValueArray = shift;
my $nameEntries = "${name}Values";
$nameEntries =~ s/:/_/g;
my $nameIndex = "${name}Index";
$nameIndex =~ s/:/_/g;
if (($name =~ /Prototype/) or ($name =~ /Constructor/)) {
my $type = $name;
my $implClass;
if ($name =~ /Prototype/) {
$type =~ s/Prototype.*//;
$implClass = $type; $implClass =~ s/Wrapper$//;
push(@implContent, "/* Hash table for prototype */\n");
} else {
$type =~ s/Constructor.*//;
$implClass = $type; $implClass =~ s/Constructor$//;
push(@implContent, "/* Hash table for constructor */\n");
}
} else {
push(@implContent, "/* Hash table */\n");
}
if ($justGenerateValueArray) {
GenerateHashTableValueArray($keys, $specials, $value1, $value2, $conditionals, $readWriteConditionals, $nameEntries) if $size;
return;
}
# Generate size data for compact' size hash table
my @table = ();
my @links = ();
my $compactSize = ceilingToPowerOf2($size * 2);
my $maxDepth = 0;
my $collisions = 0;
my $numEntries = $compactSize;
my $i = 0;
foreach (@{$keys}) {
my $depth = 0;
my $h = Hasher::GenerateHashValue($_) % $numEntries;
while (defined($table[$h])) {
if (defined($links[$h])) {
$h = $links[$h];
$depth++;
} else {
$collisions++;
$links[$h] = $compactSize;
$h = $compactSize;
$compactSize++;
}
}
$table[$h] = $i;
$i++;
$maxDepth = $depth if ($depth > $maxDepth);
}
push(@implContent, "\nstatic const struct CompactHashIndex ${nameIndex}\[$compactSize\] = {\n");
for (my $i = 0; $i < $compactSize; $i++) {
my $T = -1;
if (defined($table[$i])) { $T = $table[$i]; }
my $L = -1;
if (defined($links[$i])) { $L = $links[$i]; }
push(@implContent, " { $T, $L },\n");
}
push(@implContent, "};\n\n");
# Dump the hash table
my $hasSetter = GenerateHashTableValueArray($keys, $specials, $value1, $value2, $conditionals, $readWriteConditionals, $nameEntries);
my $packedSize = scalar @{$keys};
my $compactSizeMask = $numEntries - 1;
push(@implContent, "static const HashTable $name = { $packedSize, $compactSizeMask, $hasSetter, ${className}::info(), $nameEntries, $nameIndex };\n");
}
sub WriteData
{
my $object = shift;
my $interface = shift;
my $outputDir = shift;
my $name = $interface->type->name;
my $headerFileName = "$outputDir/JS$name.h";
my $implFileName = "$outputDir/JS$name.cpp";
my $depsFileName = "$outputDir/JS$name.dep";
# Update a .cpp file if the contents are changed.
my $contents = join "", @implContentHeader;
my @includes = ();
my %implIncludeConditions = ();
foreach my $include (keys %implIncludes) {
next if $headerIncludes{$include};
next if $headerTrailingIncludes{$include};
my $condition = $implIncludes{$include};
my $checkType = $include;
$checkType =~ s/\.h//;
next if $codeGenerator->IsSVGAnimatedTypeName($checkType);
$include = "\"$include\"" unless $include =~ /^["<]/; # "
if ($condition eq 1) {
push @includes, $include;
} else {
push @{$implIncludeConditions{$codeGenerator->GenerateConditionalStringFromAttributeValue($condition)}}, $include;
}
}
foreach my $include (sort @includes) {
$contents .= "#include $include\n";
}
foreach my $condition (sort keys %implIncludeConditions) {
$contents .= "\n#if " . $condition . "\n";
foreach my $include (sort @{$implIncludeConditions{$condition}}) {
$contents .= "#include $include\n";
}
$contents .= "#endif\n";
}
$contents .= join "", @implContent;
$codeGenerator->UpdateFile($implFileName, $contents);
@implContentHeader = ();
@implContent = ();
%implIncludes = ();
# Update a .h file if the contents are changed.
$contents = join "", @headerContentHeader;
@includes = ();
foreach my $include (keys %headerIncludes) {
$include = "\"$include\"" unless $include =~ /^["<]/; # "
push @includes, $include;
}
foreach my $include (sort @includes) {
# "JSClassName.h" is already included right after config.h.
next if $include eq "\"JS$name.h\"";
$contents .= "#include $include\n";
}
$contents .= join "", @headerContent;
@includes = ();
foreach my $include (keys %headerTrailingIncludes) {
$include = "\"$include\"" unless $include =~ /^["<]/; # "
push @includes, $include;
}
foreach my $include (sort @includes) {
$contents .= "#include $include\n";
}
$codeGenerator->UpdateFile($headerFileName, $contents);
@headerContentHeader = ();
@headerContent = ();
%headerIncludes = ();
%headerTrailingIncludes = ();
if (@depsContent) {
# Update a .dep file if the contents are changed.
$contents = join "", @depsContent;
$codeGenerator->UpdateFile($depsFileName, $contents);
@depsContent = ();
}
}
sub GeneratePrototypeDeclaration
{
my ($outputArray, $className, $interface) = @_;
my $prototypeClassName = "${className}Prototype";
my %structureFlags = ();
push(@$outputArray, "class ${prototypeClassName} : public JSC::JSNonFinalObject {\n");
push(@$outputArray, "public:\n");
push(@$outputArray, " using Base = JSC::JSNonFinalObject;\n");
push(@$outputArray, " static ${prototypeClassName}* create(JSC::VM& vm, JSDOMGlobalObject* globalObject, JSC::Structure* structure)\n");
push(@$outputArray, " {\n");
push(@$outputArray, " ${className}Prototype* ptr = new (NotNull, JSC::allocateCell<${className}Prototype>(vm.heap)) ${className}Prototype(vm, globalObject, structure);\n");
push(@$outputArray, " ptr->finishCreation(vm);\n");
push(@$outputArray, " return ptr;\n");
push(@$outputArray, " }\n\n");
push(@$outputArray, " DECLARE_INFO;\n");
push(@$outputArray, " static JSC::Structure* createStructure(JSC::VM& vm, JSC::JSGlobalObject* globalObject, JSC::JSValue prototype)\n");
push(@$outputArray, " {\n");
push(@$outputArray, " return JSC::Structure::create(vm, globalObject, prototype, JSC::TypeInfo(JSC::ObjectType, StructureFlags), info());\n");
push(@$outputArray, " }\n");
push(@$outputArray, "\nprivate:\n");
push(@$outputArray, " ${prototypeClassName}(JSC::VM& vm, JSC::JSGlobalObject*, JSC::Structure* structure)\n");
push(@$outputArray, " : JSC::JSNonFinalObject(vm, structure)\n");
push(@$outputArray, " {\n");
push(@$outputArray, " }\n");
if (PrototypeHasStaticPropertyTable($interface)) {
if (IsGlobalOrPrimaryGlobalInterface($interface)) {
$structureFlags{"JSC::HasStaticPropertyTable"} = 1;
} else {
push(@$outputArray, "\n");
push(@$outputArray, " void finishCreation(JSC::VM&);\n");
}
}
# FIXME: Should this override putByIndex as well?
if ($interface->extendedAttributes->{CustomPutOnPrototype}) {
push(@$outputArray, "\n");
push(@$outputArray, " static bool put(JSC::JSCell*, JSC::ExecState*, JSC::PropertyName, JSC::JSValue, JSC::PutPropertySlot&);\n");
}
if ($interface->extendedAttributes->{CustomDefineOwnPropertyOnPrototype}) {
push(@$outputArray, "\n");
push(@$outputArray, " static bool defineOwnProperty(JSC::JSObject*, JSC::ExecState*, JSC::PropertyName, const JSC::PropertyDescriptor&, bool shouldThrow);\n");
}
$structureFlags{"JSC::IsImmutablePrototypeExoticObject"} = 1 if $interface->extendedAttributes->{IsImmutablePrototypeExoticObjectOnPrototype};
# structure flags
if (%structureFlags) {
push(@$outputArray, "public:\n");
push(@$outputArray, " static constexpr unsigned StructureFlags = Base::StructureFlags");
foreach my $structureFlag (sort (keys %structureFlags)) {
push(@$outputArray, " | " . $structureFlag);
}
push(@$outputArray, ";\n");
}
push(@$outputArray, "};\n\n");
}
sub GetConstructorTemplateClassName
{
my $interface = shift;
return "JSDOMConstructorNotConstructable" if $interface->extendedAttributes->{NamedConstructor};
return "JSDOMConstructorNotConstructable" unless IsConstructable($interface);
return "JSDOMBuiltinConstructor" if IsJSBuiltinConstructor($interface);
return "JSDOMConstructor";
}
sub GenerateConstructorDeclaration
{
my ($outputArray, $className, $interface) = @_;
my $interfaceName = $interface->type->name;
my $constructorClassName = "${className}Constructor";
my $templateClassName = GetConstructorTemplateClassName($interface);
AddToImplIncludes("${templateClassName}.h");
AddToImplIncludes("JSDOMNamedConstructor.h") if $interface->extendedAttributes->{NamedConstructor};
push(@$outputArray, "using $constructorClassName = $templateClassName<$className>;\n");
push(@$outputArray, "using JS${interfaceName}NamedConstructor = JSDOMNamedConstructor<$className>;\n") if $interface->extendedAttributes->{NamedConstructor};
push(@$outputArray, "\n");
}
sub GenerateConstructorDefinitions
{
my ($outputArray, $className, $protoClassName, $visibleInterfaceName, $interface, $generatingNamedConstructor) = @_;
if (IsConstructable($interface)) {
my @constructors = @{$interface->constructors};
if (@constructors > 1) {
foreach my $constructor (@constructors) {
GenerateConstructorDefinition($outputArray, $className, $protoClassName, $visibleInterfaceName, $interface, $generatingNamedConstructor, $constructor);
}
my $overloadFunctionPrefix = "construct${className}";
push(@implContent, "template<> EncodedJSValue JSC_HOST_CALL ${className}Constructor::construct(JSGlobalObject* globalObject, CallFrame* state)\n");
push(@implContent, "{\n");
push(@implContent, " VM& vm = globalObject->vm();\n");
push(@implContent, " auto throwScope = DECLARE_THROW_SCOPE(vm);\n");
push(@implContent, " UNUSED_PARAM(throwScope);\n");
GenerateOverloadDispatcher(@{$interface->constructors}[0], $interface, $overloadFunctionPrefix, "", "globalObject, state");
push(@implContent, "}\n\n");
} elsif (@constructors == 1) {
GenerateConstructorDefinition($outputArray, $className, $protoClassName, $visibleInterfaceName, $interface, $generatingNamedConstructor, $constructors[0]);
} else {
GenerateConstructorDefinition($outputArray, $className, $protoClassName, $visibleInterfaceName, $interface, $generatingNamedConstructor);
}
}
GenerateConstructorHelperMethods($outputArray, $className, $protoClassName, $visibleInterfaceName, $interface, $generatingNamedConstructor);
}
sub GenerateConstructorDefinition
{
my ($outputArray, $className, $protoClassName, $visibleInterfaceName, $interface, $generatingNamedConstructor, $operation) = @_;
return if IsJSBuiltinConstructor($interface);
my $interfaceName = $interface->type->name;
my $constructorClassName = $generatingNamedConstructor ? "${className}NamedConstructor" : "${className}Constructor";
if (IsConstructable($interface)) {
if ($interface->extendedAttributes->{CustomConstructor}) {
push(@$outputArray, "template<> JSC::EncodedJSValue JSC_HOST_CALL ${constructorClassName}::construct(JSC::JSGlobalObject* globalObject, JSC::CallFrame* state)\n");
push(@$outputArray, "{\n");
push(@$outputArray, " ASSERT(state);\n");
push(@$outputArray, " UNUSED_PARAM(globalObject);\n");
push(@$outputArray, " return construct${className}(globalObject, *state);\n");
push(@$outputArray, "}\n\n");
} elsif (!HasCustomConstructor($interface) && (!$interface->extendedAttributes->{NamedConstructor} || $generatingNamedConstructor)) {
my $isOverloaded = $operation->{overloads} && @{$operation->{overloads}} > 1;
if ($isOverloaded) {
push(@$outputArray, "static inline EncodedJSValue construct${className}$operation->{overloadIndex}(JSGlobalObject* globalObject, CallFrame* state)\n");
} else {
push(@$outputArray, "template<> EncodedJSValue JSC_HOST_CALL ${constructorClassName}::construct(JSGlobalObject* globalObject, CallFrame* state)\n");
}
push(@$outputArray, "{\n");
push(@$outputArray, " VM& vm = globalObject->vm();\n");
push(@$outputArray, " auto throwScope = DECLARE_THROW_SCOPE(vm);\n");
push(@$outputArray, " UNUSED_PARAM(throwScope);\n");
push(@$outputArray, " auto* castedThis = jsCast<${constructorClassName}*>(state->jsCallee());\n");
push(@$outputArray, " ASSERT(castedThis);\n");
GenerateArgumentsCountCheck($outputArray, $operation, $interface, " ");
my $functionImplementationName = $generatingNamedConstructor ? "createForJSConstructor" : "create";
my $functionString = GenerateParametersCheck($outputArray, $operation, $interface, $functionImplementationName, " ");
push(@$outputArray, " auto object = ${functionString};\n");
push(@$outputArray, " RETURN_IF_EXCEPTION(throwScope, encodedJSValue());\n") if $codeGenerator->ExtendedAttributeContains($interface->extendedAttributes->{ConstructorCallWith}, "ExecState");
my $IDLType = GetIDLType($interface, $interface->type);
AddToImplIncludes("JSDOMConvertInterface.h");
my @constructionConversionArguments = ();
push(@constructionConversionArguments, "*state");
push(@constructionConversionArguments, "*castedThis->globalObject()");
push(@constructionConversionArguments, "throwScope") if $interface->extendedAttributes->{ConstructorMayThrowException};
push(@constructionConversionArguments, "WTFMove(object)");
push(@$outputArray, " return JSValue::encode(toJSNewlyCreated<${IDLType}>(" . join(", ", @constructionConversionArguments) . "));\n");
push(@$outputArray, "}\n\n");
}
}
}
sub ConstructorHasProperties
{
my $interface = shift;
foreach my $constant (@{$interface->constants}) {
return 1;
}
foreach my $attribute (@{$interface->attributes}) {
next unless ($attribute->isStatic);
return 1;
}
foreach my $operation (@{$interface->operations}) {
next unless ($operation->isStatic);
return 1;
}
return 0;
}
sub GetRuntimeEnabledStaticProperties
{
my ($interface) = @_;
my @runtimeEnabledProperties = ();
my @attributes = @{$interface->attributes};
push(@attributes, @{$interface->mapLike->attributes}) if $interface->mapLike;
foreach my $attribute (@attributes) {
next if AttributeShouldBeOnInstance($interface, $attribute) != 0;
next if not $attribute->isStatic;
if (NeedsRuntimeCheck($interface, $attribute)) {
push(@runtimeEnabledProperties, $attribute);
}
}
my @operations = @{$interface->operations};
push(@operations, @{$interface->iterable->operations}) if IsKeyValueIterableInterface($interface);
push(@operations, @{$interface->mapLike->operations}) if $interface->mapLike;
push(@operations, @{$interface->serializable->operations}) if $interface->serializable;
foreach my $operation (@operations) {
next if ($operation->extendedAttributes->{PrivateIdentifier} and not $operation->extendedAttributes->{PublicIdentifier});
next if $operation->{overloadIndex} && $operation->{overloadIndex} > 1;
next if OperationShouldBeOnInstance($interface, $operation) != 0;
next if $operation->name eq "[Symbol.Iterator]";
next if not $operation->isStatic;
if (NeedsRuntimeCheck($interface, $operation)) {
push(@runtimeEnabledProperties, $operation);
}
}
return @runtimeEnabledProperties;
}
sub GenerateConstructorHelperMethods
{
my ($outputArray, $className, $protoClassName, $visibleInterfaceName, $interface, $generatingNamedConstructor) = @_;
my $constructorClassName = $generatingNamedConstructor ? "${className}NamedConstructor" : "${className}Constructor";
my $leastConstructorLength = 0;
if ($interface->extendedAttributes->{Constructor} || $interface->extendedAttributes->{CustomConstructor}) {
my @constructors = @{$interface->constructors};
my @customConstructors = @{$interface->customConstructors};
$leastConstructorLength = 255;
foreach my $constructor (@constructors, @customConstructors) {
my $constructorLength = GetFunctionLength($constructor);
$leastConstructorLength = $constructorLength if ($constructorLength < $leastConstructorLength);
}
} else {
$leastConstructorLength = 0;
}
# If the interface has a parent interface which does not have [NoInterfaceObject], then use its interface object as prototype,
# otherwise use FunctionPrototype: http://heycam.github.io/webidl/#interface-object
push(@$outputArray, "template<> JSValue ${constructorClassName}::prototypeForStructure(JSC::VM& vm, const JSDOMGlobalObject& globalObject)\n");
push(@$outputArray, "{\n");
assert("An interface cannot inherit from another interface that is marked as [NoInterfaceObject]") if $interface->parentType && $codeGenerator->GetInterfaceExtendedAttributesFromName($interface->parentType->name)->{NoInterfaceObject};
if (!$generatingNamedConstructor and $interface->parentType) {
my $parentClassName = "JS" . $interface->parentType->name;
push(@$outputArray, " return ${parentClassName}::getConstructor(vm, &globalObject);\n");
} else {
AddToImplIncludes("<JavaScriptCore/FunctionPrototype.h>");
push(@$outputArray, " UNUSED_PARAM(vm);\n");
push(@$outputArray, " return globalObject.functionPrototype();\n");
}
push(@$outputArray, "}\n\n");
push(@$outputArray, "template<> void ${constructorClassName}::initializeProperties(VM& vm, JSDOMGlobalObject& globalObject)\n");
push(@$outputArray, "{\n");
# There must exist an interface prototype object for every non-callback interface defined, regardless
# of whether the interface was declared with the [NoInterfaceObject] extended attribute.
# https://heycam.github.io/webidl/#interface-prototype-object
if (ShouldUseGlobalObjectPrototype($interface)) {
push(@$outputArray, " putDirect(vm, vm.propertyNames->prototype, globalObject.getPrototypeDirect(vm), JSC::PropertyAttribute::DontDelete | JSC::PropertyAttribute::ReadOnly | JSC::PropertyAttribute::DontEnum);\n");
} elsif ($interface->isCallback) {
push(@$outputArray, " UNUSED_PARAM(globalObject);\n");
} else {
push(@$outputArray, " putDirect(vm, vm.propertyNames->prototype, ${className}::prototype(vm, globalObject), JSC::PropertyAttribute::DontDelete | JSC::PropertyAttribute::ReadOnly | JSC::PropertyAttribute::DontEnum);\n");
}
push(@$outputArray, " putDirect(vm, vm.propertyNames->name, jsNontrivialString(vm, String(\"$visibleInterfaceName\"_s)), JSC::PropertyAttribute::ReadOnly | JSC::PropertyAttribute::DontEnum);\n");
push(@$outputArray, " putDirect(vm, vm.propertyNames->length, jsNumber(${leastConstructorLength}), JSC::PropertyAttribute::ReadOnly | JSC::PropertyAttribute::DontEnum);\n") if defined $leastConstructorLength;
my $classForThis = "${className}::info()";
if ($interface->isCallback) {
$classForThis = "nullptr";
}
push(@$outputArray, " reifyStaticProperties(vm, ${classForThis}, ${className}ConstructorTableValues, *this);\n") if ConstructorHasProperties($interface);
my @runtimeEnabledProperties = GetRuntimeEnabledStaticProperties($interface);
foreach my $operationOrAttribute (@runtimeEnabledProperties) {
my $conditionalString = $codeGenerator->GenerateConditionalString($operationOrAttribute);
push(@$outputArray, "#if ${conditionalString}\n") if $conditionalString;
my $runtimeEnableConditionalString = GenerateRuntimeEnableConditionalString($interface, $operationOrAttribute, "true");
my $name = $operationOrAttribute->name;
push(@$outputArray, " if (!${runtimeEnableConditionalString}) {\n");
push(@$outputArray, " auto propertyName = Identifier::fromString(vm, reinterpret_cast<const LChar*>(\"$name\"), strlen(\"$name\"));\n");
push(@$outputArray, " VM::DeletePropertyModeScope scope(vm, VM::DeletePropertyMode::IgnoreConfigurable);\n");
push(@$outputArray, " JSObject::deleteProperty(this, globalObject.globalExec(), propertyName);\n");
push(@$outputArray, " }\n");
push(@$outputArray, "#endif\n") if $conditionalString;
}
push(@$outputArray, "}\n\n");
if (IsJSBuiltinConstructor($interface)) {
push(@$outputArray, "template<> FunctionExecutable* ${constructorClassName}::initializeExecutable(VM& vm)\n");
push(@$outputArray, "{\n");
push(@$outputArray, " return " . GetJSBuiltinFunctionNameFromString($interface->type->name, "initialize" . $interface->type->name) . "(vm);\n");
push(@$outputArray, "}\n");
push(@$outputArray, "\n");
}
push(@$outputArray, "template<> const ClassInfo ${constructorClassName}::s_info = { \"${visibleInterfaceName}\", &Base::s_info, nullptr, nullptr, CREATE_METHOD_TABLE($constructorClassName) };\n\n");
}
sub HasCustomConstructor
{
my $interface = shift;
return $interface->extendedAttributes->{CustomConstructor};
}
sub HasCustomGetter
{
my $attribute = shift;
return $attribute->extendedAttributes->{Custom} || $attribute->extendedAttributes->{CustomGetter};
}
sub HasCustomSetter
{
my $attribute = shift;
return $attribute->extendedAttributes->{Custom} || $attribute->extendedAttributes->{CustomSetter};
}
sub HasCustomMethod
{
my $operation = shift;
return $operation->extendedAttributes->{Custom};
}
sub NeedsConstructorProperty
{
my $interface = shift;
return !$interface->extendedAttributes->{NoInterfaceObject};
}
sub IsConstructable
{
my $interface = shift;
return HasCustomConstructor($interface)
|| $interface->extendedAttributes->{Constructor}
|| $interface->extendedAttributes->{NamedConstructor}
|| $interface->extendedAttributes->{JSBuiltinConstructor};
}
sub InstanceOverridesGetCallData
{
my $interface = shift;
return $interface->{LegacyCallers} || $interface->extendedAttributes->{CustomGetCallData} || $interface->extendedAttributes->{Plugin};
}
sub HeaderNeedsPrototypeDeclaration
{
my $interface = shift;
return IsDOMGlobalObject($interface)
|| $interface->extendedAttributes->{CustomPutOnPrototype}
|| $interface->extendedAttributes->{CustomDefineOwnPropertyOnPrototype};
}
sub IsUnforgeable
{
my ($interface, $property) = @_;
return $property->extendedAttributes->{Unforgeable} || $interface->extendedAttributes->{Unforgeable};
}
sub ComputeFunctionSpecial
{
my ($interface, $operation) = @_;
my @specials = ();
push(@specials, ("JSC::PropertyAttribute::DontDelete", "JSC::PropertyAttribute::ReadOnly")) if IsUnforgeable($interface, $operation);
push(@specials, "JSC::PropertyAttribute::DontEnum") if $operation->extendedAttributes->{NotEnumerable};
if (IsJSBuiltin($interface, $operation)) {
push(@specials, "JSC::PropertyAttribute::Builtin");
} else {
push(@specials, "JSC::PropertyAttribute::Function");
}
if ($operation->extendedAttributes->{DOMJIT}) {
push(@specials, "JSC::PropertyAttribute::DOMJITFunction") if $operation->extendedAttributes->{DOMJIT};
}
return "static_cast<unsigned>(" . ((@specials > 0) ? join(" | ", @specials) : "0") . ")";
}
sub IsJSBuiltin
{
my ($interface, $object) = @_;
return 0 if $object->extendedAttributes->{Custom};
return 0 if $object->extendedAttributes->{CustomGetter};
return 0 if $object->extendedAttributes->{CustomSetter};
return 1 if $object->extendedAttributes->{JSBuiltin};
return 1 if $interface->extendedAttributes->{JSBuiltin};
return 0;
}
sub IsJSBuiltinConstructor
{
my ($interface) = @_;
return 0 if $interface->extendedAttributes->{CustomConstructor};
return 1 if $interface->extendedAttributes->{JSBuiltin};
return 1 if $interface->extendedAttributes->{JSBuiltinConstructor};
return 0;
}
sub GetJSBuiltinFunctionName
{
my ($className, $operation) = @_;
my $scopeName = $operation->extendedAttributes->{ImplementedBy};
$scopeName = substr $className, 2 unless $scopeName;
return GetJSBuiltinFunctionNameFromString($scopeName, $operation->name);
}
sub GetJSBuiltinFunctionNameFromString
{
my ($scopeName, $functionName) = @_;
return $codeGenerator->WK_lcfirst($scopeName) . $codeGenerator->WK_ucfirst($functionName) . "CodeGenerator";
}
sub GetJSBuiltinScopeName
{
my ($interface, $object) = @_;
return $object->extendedAttributes->{ImplementedBy} || $interface->type->name;
}
sub AddJSBuiltinIncludesIfNeeded()
{
my $interface = shift;
if ($interface->extendedAttributes->{JSBuiltin} || $interface->extendedAttributes->{JSBuiltinConstructor}) {
AddToImplIncludes($interface->type->name . "Builtins.h");
return;
}
foreach my $operation (@{$interface->operations}) {
AddToImplIncludes(GetJSBuiltinScopeName($interface, $operation) . "Builtins.h", $operation->extendedAttributes->{Conditional}) if IsJSBuiltin($interface, $operation);
}
foreach my $attribute (@{$interface->attributes}) {
AddToImplIncludes(GetJSBuiltinScopeName($interface, $attribute) . "Builtins.h", $attribute->extendedAttributes->{Conditional}) if IsJSBuiltin($interface, $attribute);
}
}
sub GenerateCallTracer()
{
my ($outputArray, $callTracingCallback, $name, $arguments, $indent) = @_;
AddToImplIncludes("CallTracer.h");
push(@$outputArray, $indent . "if (UNLIKELY(impl.callTracingActive()))\n");
push(@$outputArray, $indent . " CallTracer::" . $callTracingCallback . "(impl, \"" . $name . "\"_s");
if (scalar(@$arguments)) {
push(@$outputArray, ", { " . join(", ", @$arguments) . " }");
}
push(@$outputArray, ");\n");
}
sub GenerateCustomElementReactionsStackIfNeeded
{
my ($outputArray, $context, $stateVariable) = @_;
my $CEReactions = $context->extendedAttributes->{CEReactions};
return if !$CEReactions;
AddToImplIncludes("CustomElementReactionQueue.h");
if ($CEReactions eq "NotNeeded") {
push(@$outputArray, " CustomElementReactionDisallowedScope customElementReactionDisallowedScope;\n");
} else {
push(@$outputArray, " CustomElementReactionStack customElementReactionStack($stateVariable);\n");
}
}
1;