| /* |
| * Copyright (C) 2016-2019 Apple Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY |
| * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
| * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "config.h" |
| #include "WebAssemblyTableConstructor.h" |
| |
| #if ENABLE(WEBASSEMBLY) |
| |
| #include "FunctionPrototype.h" |
| #include "JSCInlines.h" |
| #include "JSWebAssemblyHelpers.h" |
| #include "JSWebAssemblyTable.h" |
| #include "WebAssemblyTablePrototype.h" |
| |
| #include "WebAssemblyTableConstructor.lut.h" |
| |
| namespace JSC { |
| |
| const ClassInfo WebAssemblyTableConstructor::s_info = { "Function", &Base::s_info, &constructorTableWebAssemblyTable, nullptr, CREATE_METHOD_TABLE(WebAssemblyTableConstructor) }; |
| |
| /* Source for WebAssemblyTableConstructor.lut.h |
| @begin constructorTableWebAssemblyTable |
| @end |
| */ |
| |
| static EncodedJSValue JSC_HOST_CALL constructJSWebAssemblyTable(JSGlobalObject* globalObject, CallFrame* callFrame) |
| { |
| VM& vm = globalObject->vm(); |
| auto throwScope = DECLARE_THROW_SCOPE(vm); |
| |
| JSObject* memoryDescriptor; |
| { |
| JSValue argument = callFrame->argument(0); |
| if (!argument.isObject()) |
| return JSValue::encode(throwException(globalObject, throwScope, createTypeError(globalObject, "WebAssembly.Table expects its first argument to be an object"_s))); |
| memoryDescriptor = jsCast<JSObject*>(argument); |
| } |
| |
| Wasm::TableElementType type; |
| { |
| Identifier elementIdent = Identifier::fromString(vm, "element"); |
| JSValue elementValue = memoryDescriptor->get(globalObject, elementIdent); |
| RETURN_IF_EXCEPTION(throwScope, encodedJSValue()); |
| String elementString = elementValue.toWTFString(globalObject); |
| RETURN_IF_EXCEPTION(throwScope, encodedJSValue()); |
| if (elementString == "funcref" || elementString == "anyfunc") |
| type = Wasm::TableElementType::Funcref; |
| else if (elementString == "anyref") |
| type = Wasm::TableElementType::Anyref; |
| else |
| return JSValue::encode(throwException(globalObject, throwScope, createTypeError(globalObject, "WebAssembly.Table expects its 'element' field to be the string 'funcref' or 'anyref'"_s))); |
| } |
| |
| Identifier initialIdent = Identifier::fromString(vm, "initial"); |
| JSValue initialSizeValue = memoryDescriptor->get(globalObject, initialIdent); |
| RETURN_IF_EXCEPTION(throwScope, encodedJSValue()); |
| uint32_t initial = toNonWrappingUint32(globalObject, initialSizeValue); |
| RETURN_IF_EXCEPTION(throwScope, encodedJSValue()); |
| |
| // In WebIDL, "present" means that [[Get]] result is undefined, not [[HasProperty]] result. |
| // https://heycam.github.io/webidl/#idl-dictionaries |
| Optional<uint32_t> maximum; |
| Identifier maximumIdent = Identifier::fromString(vm, "maximum"); |
| JSValue maxSizeValue = memoryDescriptor->get(globalObject, maximumIdent); |
| RETURN_IF_EXCEPTION(throwScope, encodedJSValue()); |
| if (!maxSizeValue.isUndefined()) { |
| maximum = toNonWrappingUint32(globalObject, maxSizeValue); |
| RETURN_IF_EXCEPTION(throwScope, encodedJSValue()); |
| |
| if (initial > *maximum) { |
| return JSValue::encode(throwException(globalObject, throwScope, |
| createRangeError(globalObject, "'maximum' property must be greater than or equal to the 'initial' property"_s))); |
| } |
| } |
| |
| RefPtr<Wasm::Table> wasmTable = Wasm::Table::tryCreate(initial, maximum, type); |
| if (!wasmTable) { |
| return JSValue::encode(throwException(globalObject, throwScope, |
| createRangeError(globalObject, "couldn't create Table"_s))); |
| } |
| |
| RELEASE_AND_RETURN(throwScope, JSValue::encode(JSWebAssemblyTable::tryCreate(globalObject, vm, globalObject->webAssemblyTableStructure(), wasmTable.releaseNonNull()))); |
| } |
| |
| static EncodedJSValue JSC_HOST_CALL callJSWebAssemblyTable(JSGlobalObject* globalObject, CallFrame*) |
| { |
| VM& vm = globalObject->vm(); |
| auto scope = DECLARE_THROW_SCOPE(vm); |
| return JSValue::encode(throwConstructorCannotBeCalledAsFunctionTypeError(globalObject, scope, "WebAssembly.Table")); |
| } |
| |
| WebAssemblyTableConstructor* WebAssemblyTableConstructor::create(VM& vm, Structure* structure, WebAssemblyTablePrototype* thisPrototype) |
| { |
| auto* constructor = new (NotNull, allocateCell<WebAssemblyTableConstructor>(vm.heap)) WebAssemblyTableConstructor(vm, structure); |
| constructor->finishCreation(vm, thisPrototype); |
| return constructor; |
| } |
| |
| Structure* WebAssemblyTableConstructor::createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype) |
| { |
| return Structure::create(vm, globalObject, prototype, TypeInfo(InternalFunctionType, StructureFlags), info()); |
| } |
| |
| void WebAssemblyTableConstructor::finishCreation(VM& vm, WebAssemblyTablePrototype* prototype) |
| { |
| Base::finishCreation(vm, "Table"_s, NameAdditionMode::WithoutStructureTransition); |
| putDirectWithoutTransition(vm, vm.propertyNames->prototype, prototype, PropertyAttribute::DontEnum | PropertyAttribute::DontDelete | PropertyAttribute::ReadOnly); |
| putDirectWithoutTransition(vm, vm.propertyNames->length, jsNumber(1), PropertyAttribute::ReadOnly | PropertyAttribute::DontEnum); |
| } |
| |
| WebAssemblyTableConstructor::WebAssemblyTableConstructor(VM& vm, Structure* structure) |
| : Base(vm, structure, callJSWebAssemblyTable, constructJSWebAssemblyTable) |
| { |
| } |
| |
| } // namespace JSC |
| |
| #endif // ENABLE(WEBASSEMBLY) |
| |