| /* |
| * Copyright (C) 2008 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. |
| * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of |
| * its contributors may be used to endorse or promote products derived |
| * from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "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 OR ITS 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. |
| */ |
| |
| #ifndef Register_h |
| #define Register_h |
| |
| #include "JSValue.h" |
| #include <wtf/Assertions.h> |
| #include <wtf/FastAllocBase.h> |
| #include <wtf/VectorTraits.h> |
| |
| namespace JSC { |
| |
| class Arguments; |
| class CodeBlock; |
| class ExecState; |
| class JSActivation; |
| class JSFunction; |
| class JSPropertyNameIterator; |
| class ScopeChainNode; |
| |
| struct Instruction; |
| |
| typedef ExecState CallFrame; |
| |
| class Register : public WTF::FastAllocBase { |
| public: |
| Register(); |
| Register(JSValue); |
| |
| JSValue jsValue() const; |
| |
| bool marked() const; |
| void mark(); |
| |
| Register(JSActivation*); |
| Register(CallFrame*); |
| Register(CodeBlock*); |
| Register(JSFunction*); |
| Register(JSPropertyNameIterator*); |
| Register(ScopeChainNode*); |
| Register(Instruction*); |
| |
| int32_t i() const; |
| JSActivation* activation() const; |
| Arguments* arguments() const; |
| CallFrame* callFrame() const; |
| CodeBlock* codeBlock() const; |
| JSFunction* function() const; |
| JSPropertyNameIterator* propertyNameIterator() const; |
| ScopeChainNode* scopeChain() const; |
| Instruction* vPC() const; |
| |
| static Register withInt(int32_t i) |
| { |
| return Register(i); |
| } |
| |
| private: |
| Register(int32_t); |
| |
| union { |
| int32_t i; |
| EncodedJSValue value; |
| |
| JSActivation* activation; |
| CallFrame* callFrame; |
| CodeBlock* codeBlock; |
| JSFunction* function; |
| JSPropertyNameIterator* propertyNameIterator; |
| ScopeChainNode* scopeChain; |
| Instruction* vPC; |
| } u; |
| }; |
| |
| ALWAYS_INLINE Register::Register() |
| { |
| #ifndef NDEBUG |
| u.value = JSValue::encode(JSValue()); |
| #endif |
| } |
| |
| ALWAYS_INLINE Register::Register(JSValue v) |
| { |
| u.value = JSValue::encode(v); |
| } |
| |
| ALWAYS_INLINE JSValue Register::jsValue() const |
| { |
| return JSValue::decode(u.value); |
| } |
| |
| ALWAYS_INLINE bool Register::marked() const |
| { |
| return jsValue().marked(); |
| } |
| |
| ALWAYS_INLINE void Register::mark() |
| { |
| jsValue().mark(); |
| } |
| |
| // Interpreter functions |
| |
| ALWAYS_INLINE Register::Register(JSActivation* activation) |
| { |
| u.activation = activation; |
| } |
| |
| ALWAYS_INLINE Register::Register(CallFrame* callFrame) |
| { |
| u.callFrame = callFrame; |
| } |
| |
| ALWAYS_INLINE Register::Register(CodeBlock* codeBlock) |
| { |
| u.codeBlock = codeBlock; |
| } |
| |
| ALWAYS_INLINE Register::Register(JSFunction* function) |
| { |
| u.function = function; |
| } |
| |
| ALWAYS_INLINE Register::Register(Instruction* vPC) |
| { |
| u.vPC = vPC; |
| } |
| |
| ALWAYS_INLINE Register::Register(ScopeChainNode* scopeChain) |
| { |
| u.scopeChain = scopeChain; |
| } |
| |
| ALWAYS_INLINE Register::Register(JSPropertyNameIterator* propertyNameIterator) |
| { |
| u.propertyNameIterator = propertyNameIterator; |
| } |
| |
| ALWAYS_INLINE Register::Register(int32_t i) |
| { |
| u.i = i; |
| } |
| |
| ALWAYS_INLINE int32_t Register::i() const |
| { |
| return u.i; |
| } |
| |
| ALWAYS_INLINE JSActivation* Register::activation() const |
| { |
| return u.activation; |
| } |
| |
| ALWAYS_INLINE CallFrame* Register::callFrame() const |
| { |
| return u.callFrame; |
| } |
| |
| ALWAYS_INLINE CodeBlock* Register::codeBlock() const |
| { |
| return u.codeBlock; |
| } |
| |
| ALWAYS_INLINE JSFunction* Register::function() const |
| { |
| return u.function; |
| } |
| |
| ALWAYS_INLINE JSPropertyNameIterator* Register::propertyNameIterator() const |
| { |
| return u.propertyNameIterator; |
| } |
| |
| ALWAYS_INLINE ScopeChainNode* Register::scopeChain() const |
| { |
| return u.scopeChain; |
| } |
| |
| ALWAYS_INLINE Instruction* Register::vPC() const |
| { |
| return u.vPC; |
| } |
| |
| } // namespace JSC |
| |
| namespace WTF { |
| |
| template<> struct VectorTraits<JSC::Register> : VectorTraitsBase<true, JSC::Register> { }; |
| |
| } // namespace WTF |
| |
| #endif // Register_h |