blob: 463beca42bdc9b6b3c9bbf0880c52c56b7392ca6 [file] [log] [blame]
/*
* Copyright (C) 1999-2000 Harri Porten (porten@kde.org)
* Copyright (C) 2003-2019 Apple Inc. All Rights Reserved.
* Copyright (C) 2009 Torch Mobile, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#include "config.h"
#include "RegExpConstructor.h"
#include "Error.h"
#include "GetterSetter.h"
#include "JSCInlines.h"
#include "RegExpGlobalDataInlines.h"
#include "RegExpPrototype.h"
#include "YarrFlags.h"
namespace JSC {
static EncodedJSValue regExpConstructorInput(JSGlobalObject*, EncodedJSValue, PropertyName);
static EncodedJSValue regExpConstructorMultiline(JSGlobalObject*, EncodedJSValue, PropertyName);
static EncodedJSValue regExpConstructorLastMatch(JSGlobalObject*, EncodedJSValue, PropertyName);
static EncodedJSValue regExpConstructorLastParen(JSGlobalObject*, EncodedJSValue, PropertyName);
static EncodedJSValue regExpConstructorLeftContext(JSGlobalObject*, EncodedJSValue, PropertyName);
static EncodedJSValue regExpConstructorRightContext(JSGlobalObject*, EncodedJSValue, PropertyName);
template<int N>
static EncodedJSValue regExpConstructorDollar(JSGlobalObject*, EncodedJSValue, PropertyName);
static bool setRegExpConstructorInput(JSGlobalObject*, EncodedJSValue, EncodedJSValue);
static bool setRegExpConstructorMultiline(JSGlobalObject*, EncodedJSValue, EncodedJSValue);
} // namespace JSC
#include "RegExpConstructor.lut.h"
namespace JSC {
const ClassInfo RegExpConstructor::s_info = { "Function", &InternalFunction::s_info, &regExpConstructorTable, nullptr, CREATE_METHOD_TABLE(RegExpConstructor) };
/* Source for RegExpConstructor.lut.h
@begin regExpConstructorTable
input regExpConstructorInput None
$_ regExpConstructorInput DontEnum
multiline regExpConstructorMultiline None
$* regExpConstructorMultiline DontEnum
lastMatch regExpConstructorLastMatch DontDelete|ReadOnly
$& regExpConstructorLastMatch DontDelete|ReadOnly|DontEnum
lastParen regExpConstructorLastParen DontDelete|ReadOnly
$+ regExpConstructorLastParen DontDelete|ReadOnly|DontEnum
leftContext regExpConstructorLeftContext DontDelete|ReadOnly
$` regExpConstructorLeftContext DontDelete|ReadOnly|DontEnum
rightContext regExpConstructorRightContext DontDelete|ReadOnly
$' regExpConstructorRightContext DontDelete|ReadOnly|DontEnum
$1 regExpConstructorDollar<1> DontDelete|ReadOnly
$2 regExpConstructorDollar<2> DontDelete|ReadOnly
$3 regExpConstructorDollar<3> DontDelete|ReadOnly
$4 regExpConstructorDollar<4> DontDelete|ReadOnly
$5 regExpConstructorDollar<5> DontDelete|ReadOnly
$6 regExpConstructorDollar<6> DontDelete|ReadOnly
$7 regExpConstructorDollar<7> DontDelete|ReadOnly
$8 regExpConstructorDollar<8> DontDelete|ReadOnly
$9 regExpConstructorDollar<9> DontDelete|ReadOnly
@end
*/
static EncodedJSValue JSC_HOST_CALL callRegExpConstructor(JSGlobalObject*, CallFrame*);
static EncodedJSValue JSC_HOST_CALL constructWithRegExpConstructor(JSGlobalObject*, CallFrame*);
RegExpConstructor::RegExpConstructor(VM& vm, Structure* structure)
: InternalFunction(vm, structure, callRegExpConstructor, constructWithRegExpConstructor)
{
}
void RegExpConstructor::finishCreation(VM& vm, RegExpPrototype* regExpPrototype, GetterSetter* speciesSymbol)
{
Base::finishCreation(vm, vm.propertyNames->RegExp.string(), NameVisibility::Visible, NameAdditionMode::WithoutStructureTransition);
ASSERT(inherits(vm, info()));
putDirectWithoutTransition(vm, vm.propertyNames->prototype, regExpPrototype, PropertyAttribute::DontEnum | PropertyAttribute::DontDelete | PropertyAttribute::ReadOnly);
putDirectWithoutTransition(vm, vm.propertyNames->length, jsNumber(2), PropertyAttribute::ReadOnly | PropertyAttribute::DontEnum);
putDirectNonIndexAccessorWithoutTransition(vm, vm.propertyNames->speciesSymbol, speciesSymbol, PropertyAttribute::Accessor | PropertyAttribute::ReadOnly | PropertyAttribute::DontEnum);
}
template<int N>
EncodedJSValue regExpConstructorDollar(JSGlobalObject*, EncodedJSValue thisValue, PropertyName)
{
JSGlobalObject* globalObject = jsCast<RegExpConstructor*>(JSValue::decode(thisValue))->globalObject();
return JSValue::encode(globalObject->regExpGlobalData().getBackref(globalObject, N));
}
EncodedJSValue regExpConstructorInput(JSGlobalObject*, EncodedJSValue thisValue, PropertyName)
{
JSGlobalObject* globalObject = jsCast<RegExpConstructor*>(JSValue::decode(thisValue))->globalObject();
return JSValue::encode(globalObject->regExpGlobalData().input());
}
EncodedJSValue regExpConstructorMultiline(JSGlobalObject*, EncodedJSValue thisValue, PropertyName)
{
JSGlobalObject* globalObject = jsCast<RegExpConstructor*>(JSValue::decode(thisValue))->globalObject();
return JSValue::encode(jsBoolean(globalObject->regExpGlobalData().multiline()));
}
EncodedJSValue regExpConstructorLastMatch(JSGlobalObject*, EncodedJSValue thisValue, PropertyName)
{
JSGlobalObject* globalObject = jsCast<RegExpConstructor*>(JSValue::decode(thisValue))->globalObject();
return JSValue::encode(globalObject->regExpGlobalData().getBackref(globalObject, 0));
}
EncodedJSValue regExpConstructorLastParen(JSGlobalObject*, EncodedJSValue thisValue, PropertyName)
{
JSGlobalObject* globalObject = jsCast<RegExpConstructor*>(JSValue::decode(thisValue))->globalObject();
return JSValue::encode(globalObject->regExpGlobalData().getLastParen(globalObject));
}
EncodedJSValue regExpConstructorLeftContext(JSGlobalObject*, EncodedJSValue thisValue, PropertyName)
{
JSGlobalObject* globalObject = jsCast<RegExpConstructor*>(JSValue::decode(thisValue))->globalObject();
return JSValue::encode(globalObject->regExpGlobalData().getLeftContext(globalObject));
}
EncodedJSValue regExpConstructorRightContext(JSGlobalObject*, EncodedJSValue thisValue, PropertyName)
{
JSGlobalObject* globalObject = jsCast<RegExpConstructor*>(JSValue::decode(thisValue))->globalObject();
return JSValue::encode(globalObject->regExpGlobalData().getRightContext(globalObject));
}
bool setRegExpConstructorInput(JSGlobalObject* globalObject, EncodedJSValue thisValue, EncodedJSValue value)
{
VM& vm = globalObject->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
if (auto constructor = jsDynamicCast<RegExpConstructor*>(vm, JSValue::decode(thisValue))) {
auto* string = JSValue::decode(value).toString(globalObject);
RETURN_IF_EXCEPTION(scope, { });
scope.release();
JSGlobalObject* globalObject = constructor->globalObject();
globalObject->regExpGlobalData().setInput(globalObject, string);
return true;
}
return false;
}
bool setRegExpConstructorMultiline(JSGlobalObject* globalObject, EncodedJSValue thisValue, EncodedJSValue value)
{
VM& vm = globalObject->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
if (auto constructor = jsDynamicCast<RegExpConstructor*>(vm, JSValue::decode(thisValue))) {
bool multiline = JSValue::decode(value).toBoolean(globalObject);
RETURN_IF_EXCEPTION(scope, { });
scope.release();
JSGlobalObject* globalObject = constructor->globalObject();
globalObject->regExpGlobalData().setMultiline(multiline);
return true;
}
return false;
}
inline Structure* getRegExpStructure(JSGlobalObject* globalObject, JSValue newTarget)
{
Structure* structure = globalObject->regExpStructure();
if (newTarget != jsUndefined())
structure = InternalFunction::createSubclassStructure(globalObject, globalObject->regExpConstructor(), newTarget, structure);
return structure;
}
inline OptionSet<Yarr::Flags> toFlags(JSGlobalObject* globalObject, JSValue flags)
{
VM& vm = globalObject->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
if (flags.isUndefined())
return { };
auto result = Yarr::parseFlags(flags.toWTFString(globalObject));
RETURN_IF_EXCEPTION(scope, { });
if (!result) {
throwSyntaxError(globalObject, scope, "Invalid flags supplied to RegExp constructor."_s);
return { };
}
return result.value();
}
static JSObject* regExpCreate(JSGlobalObject* globalObject, JSValue newTarget, JSValue patternArg, JSValue flagsArg)
{
VM& vm = globalObject->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
String pattern = patternArg.isUndefined() ? emptyString() : patternArg.toWTFString(globalObject);
RETURN_IF_EXCEPTION(scope, nullptr);
auto flags = toFlags(globalObject, flagsArg);
RETURN_IF_EXCEPTION(scope, nullptr);
RegExp* regExp = RegExp::create(vm, pattern, flags);
if (UNLIKELY(!regExp->isValid())) {
throwException(globalObject, scope, regExp->errorToThrow(globalObject));
return nullptr;
}
Structure* structure = getRegExpStructure(globalObject, newTarget);
RETURN_IF_EXCEPTION(scope, nullptr);
return RegExpObject::create(vm, structure, regExp);
}
JSObject* constructRegExp(JSGlobalObject* globalObject, const ArgList& args, JSObject* callee, JSValue newTarget)
{
VM& vm = globalObject->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
JSValue patternArg = args.at(0);
JSValue flagsArg = args.at(1);
bool isPatternRegExp = patternArg.inherits<RegExpObject>(vm);
bool constructAsRegexp = isRegExp(vm, globalObject, patternArg);
RETURN_IF_EXCEPTION(scope, nullptr);
if (newTarget.isUndefined() && constructAsRegexp && flagsArg.isUndefined()) {
JSValue constructor = patternArg.get(globalObject, vm.propertyNames->constructor);
RETURN_IF_EXCEPTION(scope, nullptr);
if (callee == constructor) {
// We know that patternArg is a object otherwise constructAsRegexp would be false.
return patternArg.getObject();
}
}
if (isPatternRegExp) {
RegExp* regExp = jsCast<RegExpObject*>(patternArg)->regExp();
Structure* structure = getRegExpStructure(globalObject, newTarget);
RETURN_IF_EXCEPTION(scope, nullptr);
if (!flagsArg.isUndefined()) {
auto flags = toFlags(globalObject, flagsArg);
RETURN_IF_EXCEPTION(scope, nullptr);
regExp = RegExp::create(vm, regExp->pattern(), flags);
if (UNLIKELY(!regExp->isValid())) {
throwException(globalObject, scope, regExp->errorToThrow(globalObject));
return nullptr;
}
}
return RegExpObject::create(vm, structure, regExp);
}
if (constructAsRegexp) {
JSValue pattern = patternArg.get(globalObject, vm.propertyNames->source);
RETURN_IF_EXCEPTION(scope, nullptr);
if (flagsArg.isUndefined()) {
flagsArg = patternArg.get(globalObject, vm.propertyNames->flags);
RETURN_IF_EXCEPTION(scope, nullptr);
}
patternArg = pattern;
}
RELEASE_AND_RETURN(scope, regExpCreate(globalObject, newTarget, patternArg, flagsArg));
}
EncodedJSValue JSC_HOST_CALL esSpecRegExpCreate(JSGlobalObject* globalObject, CallFrame* callFrame)
{
JSValue patternArg = callFrame->argument(0);
JSValue flagsArg = callFrame->argument(1);
return JSValue::encode(regExpCreate(globalObject, jsUndefined(), patternArg, flagsArg));
}
static EncodedJSValue JSC_HOST_CALL constructWithRegExpConstructor(JSGlobalObject* globalObject, CallFrame* callFrame)
{
ArgList args(callFrame);
return JSValue::encode(constructRegExp(globalObject, args, callFrame->jsCallee(), callFrame->newTarget()));
}
static EncodedJSValue JSC_HOST_CALL callRegExpConstructor(JSGlobalObject* globalObject, CallFrame* callFrame)
{
ArgList args(callFrame);
return JSValue::encode(constructRegExp(globalObject, args, callFrame->jsCallee()));
}
} // namespace JSC