summaryrefslogtreecommitdiff
path: root/Source/JavaScriptCore/runtime/Arguments.h
diff options
context:
space:
mode:
Diffstat (limited to 'Source/JavaScriptCore/runtime/Arguments.h')
-rw-r--r--Source/JavaScriptCore/runtime/Arguments.h446
1 files changed, 223 insertions, 223 deletions
diff --git a/Source/JavaScriptCore/runtime/Arguments.h b/Source/JavaScriptCore/runtime/Arguments.h
index 7961d4bc8..8ae991422 100644
--- a/Source/JavaScriptCore/runtime/Arguments.h
+++ b/Source/JavaScriptCore/runtime/Arguments.h
@@ -34,246 +34,246 @@
namespace JSC {
- class Arguments : public JSDestructibleObject {
- friend class JIT;
- friend class DFG::SpeculativeJIT;
- public:
- typedef JSDestructibleObject Base;
-
- static Arguments* create(JSGlobalData& globalData, CallFrame* callFrame)
- {
- Arguments* arguments = new (NotNull, allocateCell<Arguments>(globalData.heap)) Arguments(callFrame);
- arguments->finishCreation(callFrame);
- return arguments;
- }
-
- static Arguments* create(JSGlobalData& globalData, CallFrame* callFrame, InlineCallFrame* inlineCallFrame)
- {
- Arguments* arguments = new (NotNull, allocateCell<Arguments>(globalData.heap)) Arguments(callFrame);
- arguments->finishCreation(callFrame, inlineCallFrame);
- return arguments;
- }
-
- enum { MaxArguments = 0x10000 };
-
- private:
- enum NoParametersType { NoParameters };
-
- Arguments(CallFrame*);
- Arguments(CallFrame*, NoParametersType);
-
- void tearOffForInlineCallFrame(JSGlobalData& globalData, Register*, InlineCallFrame*);
+class Arguments : public JSDestructibleObject {
+ friend class JIT;
+ friend class DFG::SpeculativeJIT;
+public:
+ typedef JSDestructibleObject Base;
- 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(JSGlobalData& globalData, JSGlobalObject* globalObject, JSValue prototype)
- {
- return Structure::create(globalData, 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(JSGlobalData&, 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)
+ static Arguments* create(JSGlobalData& globalData, CallFrame* callFrame)
{
- ASSERT(asObject(value)->inherits(&Arguments::s_info));
- return static_cast<Arguments*>(asObject(value));
+ Arguments* arguments = new (NotNull, allocateCell<Arguments>(globalData.heap)) Arguments(callFrame);
+ arguments->finishCreation(callFrame);
+ return arguments;
}
-
- inline Arguments::Arguments(CallFrame* callFrame)
- : JSDestructibleObject(callFrame->globalData(), callFrame->lexicalGlobalObject()->argumentsStructure())
+
+ static Arguments* create(JSGlobalData& globalData, CallFrame* callFrame, InlineCallFrame* inlineCallFrame)
{
+ Arguments* arguments = new (NotNull, allocateCell<Arguments>(globalData.heap)) Arguments(callFrame);
+ arguments->finishCreation(callFrame, inlineCallFrame);
+ return arguments;
}
- inline Arguments::Arguments(CallFrame* callFrame, NoParametersType)
- : JSDestructibleObject(callFrame->globalData(), callFrame->lexicalGlobalObject()->argumentsStructure())
- {
- }
+ enum { MaxArguments = 0x10000 };
- 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);
- }
- }
+private:
+ enum NoParametersType { NoParameters };
+
+ Arguments(CallFrame*);
+ Arguments(CallFrame*, NoParametersType);
+
+ void tearOffForInlineCallFrame(JSGlobalData& globalData, Register*, InlineCallFrame*);
- inline bool Arguments::tryDeleteArgument(size_t argument)
- {
- if (!isArgument(argument))
- return false;
- allocateSlowArguments();
- m_slowArguments[argument].status = SlowArgument::Deleted;
- return true;
- }
+public:
+ static const ClassInfo s_info;
- inline bool Arguments::trySetArgument(JSGlobalData& globalData, size_t argument, JSValue value)
- {
- if (!isArgument(argument))
- return false;
- this->argument(argument).set(globalData, this, value);
- return true;
- }
+ static void visitChildren(JSCell*, SlotVisitor&);
- inline JSValue Arguments::tryGetArgument(size_t argument)
- {
- if (!isArgument(argument))
- return JSValue();
- return this->argument(argument).get();
- }
+ void fillArgList(ExecState*, MarkedArgumentBuffer&);
- inline bool Arguments::isDeletedArgument(size_t argument)
+ uint32_t length(ExecState* exec) const
{
- if (argument >= m_numArguments)
- return false;
- if (!m_slowArguments)
- return false;
- if (m_slowArguments[argument].status != SlowArgument::Deleted)
- return false;
- return true;
+ if (UNLIKELY(m_overrodeLength))
+ return get(exec, exec->propertyNames().length).toUInt32(exec);
+ return m_numArguments;
}
-
- 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;
+
+ 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(JSGlobalData& globalData, JSGlobalObject* globalObject, JSValue prototype)
+ {
+ return Structure::create(globalData, globalObject, prototype, TypeInfo(ObjectType, StructureFlags), &s_info);
}
-
- 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);
+
+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(JSGlobalData&, 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->globalData(), callFrame->lexicalGlobalObject()->argumentsStructure())
+{
+}
+
+inline Arguments::Arguments(CallFrame* callFrame, NoParametersType)
+ : JSDestructibleObject(callFrame->globalData(), 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 void Arguments::finishCreation(CallFrame* callFrame)
- {
- Base::finishCreation(callFrame->globalData());
- 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->globalData(), 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 bool Arguments::tryDeleteArgument(size_t argument)
+{
+ if (!isArgument(argument))
+ return false;
+ allocateSlowArguments();
+ m_slowArguments[argument].status = SlowArgument::Deleted;
+ return true;
+}
+
+inline bool Arguments::trySetArgument(JSGlobalData& globalData, size_t argument, JSValue value)
+{
+ if (!isArgument(argument))
+ return false;
+ this->argument(argument).set(globalData, 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->globalData());
+ 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->globalData(), 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];
}
- inline void Arguments::finishCreation(CallFrame* callFrame, InlineCallFrame* inlineCallFrame)
- {
- Base::finishCreation(callFrame->globalData());
- ASSERT(inherits(&s_info));
-
- JSFunction* callee = inlineCallFrame->callee.get();
- m_numArguments = inlineCallFrame->arguments.size() - 1;
- m_registers = reinterpret_cast<WriteBarrierBase<Unknown>*>(callFrame->registers()) + inlineCallFrame->stackOffset;
- m_callee.set(callFrame->globalData(), 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);
- }
+ // 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->globalData());
+ ASSERT(inherits(&s_info));
+
+ JSFunction* callee = inlineCallFrame->callee.get();
+ m_numArguments = inlineCallFrame->arguments.size() - 1;
+ m_registers = reinterpret_cast<WriteBarrierBase<Unknown>*>(callFrame->registers()) + inlineCallFrame->stackOffset;
+ m_callee.set(callFrame->globalData(), 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