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Diffstat (limited to 'Source/JavaScriptCore/runtime/Arguments.h')
-rw-r--r-- | Source/JavaScriptCore/runtime/Arguments.h | 280 |
1 files changed, 0 insertions, 280 deletions
diff --git a/Source/JavaScriptCore/runtime/Arguments.h b/Source/JavaScriptCore/runtime/Arguments.h deleted file mode 100644 index 58ac782b6..000000000 --- a/Source/JavaScriptCore/runtime/Arguments.h +++ /dev/null @@ -1,280 +0,0 @@ -/* - * Copyright (C) 1999-2000 Harri Porten (porten@kde.org) - * Copyright (C) 2003, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved. - * Copyright (C) 2007 Cameron Zwarich (cwzwarich@uwaterloo.ca) - * Copyright (C) 2007 Maks Orlovich - * - * 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. - * - */ - -#ifndef Arguments_h -#define Arguments_h - -#include "CodeOrigin.h" -#include "JSActivation.h" -#include "JSDestructibleObject.h" -#include "JSFunction.h" -#include "JSGlobalObject.h" -#include "Interpreter.h" -#include "ObjectConstructor.h" - -namespace JSC { - -class Arguments : public JSDestructibleObject { - friend class JIT; - friend class DFG::SpeculativeJIT; -public: - typedef JSDestructibleObject Base; - - static Arguments* create(VM& vm, CallFrame* callFrame) - { - Arguments* arguments = new (NotNull, allocateCell<Arguments>(vm.heap)) Arguments(callFrame); - arguments->finishCreation(callFrame); - return arguments; - } - - static Arguments* create(VM& vm, CallFrame* callFrame, InlineCallFrame* inlineCallFrame) - { - Arguments* arguments = new (NotNull, allocateCell<Arguments>(vm.heap)) Arguments(callFrame); - arguments->finishCreation(callFrame, inlineCallFrame); - return arguments; - } - - enum { MaxArguments = 0x10000 }; - -private: - enum NoParametersType { NoParameters }; - - Arguments(CallFrame*); - Arguments(CallFrame*, NoParametersType); - - void tearOffForInlineCallFrame(VM& vm, Register*, InlineCallFrame*); - -public: - static const ClassInfo s_info; - - static void visitChildren(JSCell*, SlotVisitor&); - - void fillArgList(ExecState*, MarkedArgumentBuffer&); - - uint32_t length(ExecState* exec) const - { - if (UNLIKELY(m_overrodeLength)) - return get(exec, exec->propertyNames().length).toUInt32(exec); - return m_numArguments; - } - - void copyToArguments(ExecState*, CallFrame*, uint32_t length); - void tearOff(CallFrame*); - void tearOff(CallFrame*, InlineCallFrame*); - bool isTornOff() const { return m_registerArray; } - void didTearOffActivation(ExecState*, JSActivation*); - - static Structure* createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype) - { - return Structure::create(vm, globalObject, prototype, TypeInfo(ObjectType, StructureFlags), &s_info); - } - -protected: - static const unsigned StructureFlags = OverridesGetOwnPropertySlot | InterceptsGetOwnPropertySlotByIndexEvenWhenLengthIsNotZero | OverridesVisitChildren | OverridesGetPropertyNames | JSObject::StructureFlags; - - void finishCreation(CallFrame*); - void finishCreation(CallFrame*, InlineCallFrame*); - -private: - static void destroy(JSCell*); - static bool getOwnPropertySlot(JSCell*, ExecState*, PropertyName, PropertySlot&); - static bool getOwnPropertySlotByIndex(JSCell*, ExecState*, unsigned propertyName, PropertySlot&); - static bool getOwnPropertyDescriptor(JSObject*, ExecState*, PropertyName, PropertyDescriptor&); - static void getOwnPropertyNames(JSObject*, ExecState*, PropertyNameArray&, EnumerationMode); - static void put(JSCell*, ExecState*, PropertyName, JSValue, PutPropertySlot&); - static void putByIndex(JSCell*, ExecState*, unsigned propertyName, JSValue, bool shouldThrow); - static bool deleteProperty(JSCell*, ExecState*, PropertyName); - static bool deletePropertyByIndex(JSCell*, ExecState*, unsigned propertyName); - static bool defineOwnProperty(JSObject*, ExecState*, PropertyName, PropertyDescriptor&, bool shouldThrow); - void createStrictModeCallerIfNecessary(ExecState*); - void createStrictModeCalleeIfNecessary(ExecState*); - - bool isArgument(size_t); - bool trySetArgument(VM&, size_t argument, JSValue); - JSValue tryGetArgument(size_t argument); - bool isDeletedArgument(size_t); - bool tryDeleteArgument(size_t); - WriteBarrierBase<Unknown>& argument(size_t); - void allocateSlowArguments(); - - void init(CallFrame*); - - WriteBarrier<JSActivation> m_activation; - - unsigned m_numArguments; - - // We make these full byte booleans to make them easy to test from the JIT, - // and because even if they were single-bit booleans we still wouldn't save - // any space. - bool m_overrodeLength; - bool m_overrodeCallee; - bool m_overrodeCaller; - bool m_isStrictMode; - - WriteBarrierBase<Unknown>* m_registers; - OwnArrayPtr<WriteBarrier<Unknown> > m_registerArray; - - OwnArrayPtr<SlowArgument> m_slowArguments; - - WriteBarrier<JSFunction> m_callee; -}; - -Arguments* asArguments(JSValue); - -inline Arguments* asArguments(JSValue value) -{ - ASSERT(asObject(value)->inherits(&Arguments::s_info)); - return static_cast<Arguments*>(asObject(value)); -} - -inline Arguments::Arguments(CallFrame* callFrame) - : JSDestructibleObject(callFrame->vm(), callFrame->lexicalGlobalObject()->argumentsStructure()) -{ -} - -inline Arguments::Arguments(CallFrame* callFrame, NoParametersType) - : JSDestructibleObject(callFrame->vm(), callFrame->lexicalGlobalObject()->argumentsStructure()) -{ -} - -inline void Arguments::allocateSlowArguments() -{ - if (m_slowArguments) - return; - m_slowArguments = adoptArrayPtr(new SlowArgument[m_numArguments]); - for (size_t i = 0; i < m_numArguments; ++i) { - ASSERT(m_slowArguments[i].status == SlowArgument::Normal); - m_slowArguments[i].index = CallFrame::argumentOffset(i); - } -} - -inline bool Arguments::tryDeleteArgument(size_t argument) -{ - if (!isArgument(argument)) - return false; - allocateSlowArguments(); - m_slowArguments[argument].status = SlowArgument::Deleted; - return true; -} - -inline bool Arguments::trySetArgument(VM& vm, size_t argument, JSValue value) -{ - if (!isArgument(argument)) - return false; - this->argument(argument).set(vm, this, value); - return true; -} - -inline JSValue Arguments::tryGetArgument(size_t argument) -{ - if (!isArgument(argument)) - return JSValue(); - return this->argument(argument).get(); -} - -inline bool Arguments::isDeletedArgument(size_t argument) -{ - if (argument >= m_numArguments) - return false; - if (!m_slowArguments) - return false; - if (m_slowArguments[argument].status != SlowArgument::Deleted) - return false; - return true; -} - -inline bool Arguments::isArgument(size_t argument) -{ - if (argument >= m_numArguments) - return false; - if (m_slowArguments && m_slowArguments[argument].status == SlowArgument::Deleted) - return false; - return true; -} - -inline WriteBarrierBase<Unknown>& Arguments::argument(size_t argument) -{ - ASSERT(isArgument(argument)); - if (!m_slowArguments) - return m_registers[CallFrame::argumentOffset(argument)]; - - int index = m_slowArguments[argument].index; - if (!m_activation || m_slowArguments[argument].status != SlowArgument::Captured) - return m_registers[index]; - - return m_activation->registerAt(index); -} - -inline void Arguments::finishCreation(CallFrame* callFrame) -{ - Base::finishCreation(callFrame->vm()); - ASSERT(inherits(&s_info)); - - JSFunction* callee = jsCast<JSFunction*>(callFrame->callee()); - m_numArguments = callFrame->argumentCount(); - m_registers = reinterpret_cast<WriteBarrierBase<Unknown>*>(callFrame->registers()); - m_callee.set(callFrame->vm(), this, callee); - m_overrodeLength = false; - m_overrodeCallee = false; - m_overrodeCaller = false; - m_isStrictMode = callFrame->codeBlock()->isStrictMode(); - - SharedSymbolTable* symbolTable = callFrame->codeBlock()->symbolTable(); - const SlowArgument* slowArguments = symbolTable->slowArguments(); - if (slowArguments) { - allocateSlowArguments(); - size_t count = std::min<unsigned>(m_numArguments, symbolTable->parameterCount()); - for (size_t i = 0; i < count; ++i) - m_slowArguments[i] = slowArguments[i]; - } - - // The bytecode generator omits op_tear_off_activation in cases of no - // declared parameters, so we need to tear off immediately. - if (m_isStrictMode || !callee->jsExecutable()->parameterCount()) - tearOff(callFrame); -} - -inline void Arguments::finishCreation(CallFrame* callFrame, InlineCallFrame* inlineCallFrame) -{ - Base::finishCreation(callFrame->vm()); - ASSERT(inherits(&s_info)); - - JSFunction* callee = inlineCallFrame->calleeForCallFrame(callFrame); - m_numArguments = inlineCallFrame->arguments.size() - 1; - m_registers = reinterpret_cast<WriteBarrierBase<Unknown>*>(callFrame->registers()) + inlineCallFrame->stackOffset; - m_callee.set(callFrame->vm(), this, callee); - m_overrodeLength = false; - m_overrodeCallee = false; - m_overrodeCaller = false; - m_isStrictMode = jsCast<FunctionExecutable*>(inlineCallFrame->executable.get())->isStrictMode(); - ASSERT(!jsCast<FunctionExecutable*>(inlineCallFrame->executable.get())->symbolTable(inlineCallFrame->isCall ? CodeForCall : CodeForConstruct)->slowArguments()); - - // The bytecode generator omits op_tear_off_activation in cases of no - // declared parameters, so we need to tear off immediately. - if (m_isStrictMode || !callee->jsExecutable()->parameterCount()) - tearOff(callFrame, inlineCallFrame); -} - -} // namespace JSC - -#endif // Arguments_h |