mirror of
https://github.com/darlinghq/darling-JavaScriptCore.git
synced 2025-04-17 06:20:04 +00:00
130 lines
4.7 KiB
C++
130 lines
4.7 KiB
C++
/*
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* Copyright (C) 2012, 2016 Apple Inc. All rights reserved.
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* Copyright (C) 2015 Yusuke Suzuki <utatane.tea@gmail.com>.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "config.h"
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#include "SymbolConstructor.h"
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#include "Error.h"
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#include "JSCInlines.h"
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#include "JSGlobalObject.h"
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#include "Symbol.h"
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#include "SymbolPrototype.h"
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#include <wtf/text/SymbolRegistry.h>
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namespace JSC {
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static EncodedJSValue JSC_HOST_CALL symbolConstructorFor(ExecState*);
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static EncodedJSValue JSC_HOST_CALL symbolConstructorKeyFor(ExecState*);
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}
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#include "SymbolConstructor.lut.h"
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namespace JSC {
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STATIC_ASSERT_IS_TRIVIALLY_DESTRUCTIBLE(SymbolConstructor);
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const ClassInfo SymbolConstructor::s_info = { "Function", &Base::s_info, &symbolConstructorTable, CREATE_METHOD_TABLE(SymbolConstructor) };
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/* Source for SymbolConstructor.lut.h
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@begin symbolConstructorTable
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for symbolConstructorFor DontEnum|Function 1
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keyFor symbolConstructorKeyFor DontEnum|Function 1
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@end
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*/
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SymbolConstructor::SymbolConstructor(VM& vm, Structure* structure)
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: InternalFunction(vm, structure)
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{
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}
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#define INITIALIZE_WELL_KNOWN_SYMBOLS(name) \
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putDirectWithoutTransition(vm, Identifier::fromString(&vm, #name), Symbol::create(vm, static_cast<SymbolImpl&>(*vm.propertyNames->name##Symbol.impl())), DontEnum | DontDelete | ReadOnly);
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void SymbolConstructor::finishCreation(VM& vm, SymbolPrototype* prototype)
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{
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Base::finishCreation(vm, prototype->classInfo()->className);
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putDirectWithoutTransition(vm, vm.propertyNames->prototype, prototype, DontEnum | DontDelete | ReadOnly);
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putDirectWithoutTransition(vm, vm.propertyNames->length, jsNumber(0), DontDelete | ReadOnly | DontEnum);
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JSC_COMMON_PRIVATE_IDENTIFIERS_EACH_WELL_KNOWN_SYMBOL(INITIALIZE_WELL_KNOWN_SYMBOLS)
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}
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// ------------------------------ Functions ---------------------------
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static EncodedJSValue JSC_HOST_CALL callSymbol(ExecState* exec)
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{
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JSValue description = exec->argument(0);
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if (description.isUndefined())
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return JSValue::encode(Symbol::create(exec->vm()));
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return JSValue::encode(Symbol::create(exec, description.toString(exec)));
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}
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ConstructType SymbolConstructor::getConstructData(JSCell*, ConstructData&)
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{
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return ConstructType::None;
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}
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CallType SymbolConstructor::getCallData(JSCell*, CallData& callData)
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{
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callData.native.function = callSymbol;
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return CallType::Host;
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}
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EncodedJSValue JSC_HOST_CALL symbolConstructorFor(ExecState* exec)
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{
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VM& vm = exec->vm();
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auto scope = DECLARE_THROW_SCOPE(vm);
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JSString* stringKey = exec->argument(0).toString(exec);
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RETURN_IF_EXCEPTION(scope, encodedJSValue());
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String string = stringKey->value(exec);
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RETURN_IF_EXCEPTION(scope, encodedJSValue());
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return JSValue::encode(Symbol::create(exec->vm(), exec->vm().symbolRegistry().symbolForKey(string)));
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}
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const char* const SymbolKeyForTypeError = "Symbol.keyFor requires that the first argument be a symbol";
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EncodedJSValue JSC_HOST_CALL symbolConstructorKeyFor(ExecState* exec)
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{
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VM& vm = exec->vm();
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auto scope = DECLARE_THROW_SCOPE(vm);
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JSValue symbolValue = exec->argument(0);
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if (!symbolValue.isSymbol())
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return JSValue::encode(throwTypeError(exec, scope, ASCIILiteral(SymbolKeyForTypeError)));
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SymbolImpl& uid = asSymbol(symbolValue)->privateName().uid();
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if (!uid.symbolRegistry())
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return JSValue::encode(jsUndefined());
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ASSERT(uid.symbolRegistry() == &vm.symbolRegistry());
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return JSValue::encode(jsString(exec, vm.symbolRegistry().keyForSymbol(uid)));
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}
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} // namespace JSC
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