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33 #include <wtf/Assertions.h>
34 #include <wtf/VectorTraits.h>
42 class JSPropertyNameIterator;
45 struct InlineCallFrame;
48 typedef ExecState CallFrame;
51 WTF_MAKE_FAST_ALLOCATED;
55 Register(const JSValue&);
56 Register& operator=(const JSValue&);
57 JSValue jsValue() const;
58 EncodedJSValue encodedJSValue() const;
60 Register& operator=(CallFrame*);
61 Register& operator=(CodeBlock*);
62 Register& operator=(ScopeChainNode*);
63 Register& operator=(Instruction*);
64 Register& operator=(InlineCallFrame*);
67 JSActivation* activation() const;
68 CallFrame* callFrame() const;
69 CodeBlock* codeBlock() const;
70 JSObject* function() const;
71 JSPropertyNameIterator* propertyNameIterator() const;
72 ScopeChainNode* scopeChain() const;
73 Instruction* vPC() const;
74 InlineCallFrame* asInlineCallFrame() const;
75 int32_t unboxedInt32() const;
76 bool unboxedBoolean() const;
77 JSCell* unboxedCell() const;
79 static Register withInt(int32_t i)
81 Register r = jsNumber(i);
85 static inline Register withCallee(JSObject* callee);
93 InlineCallFrame* inlineCallFrame;
94 EncodedValueDescriptor encodedValue;
98 ALWAYS_INLINE Register::Register()
105 ALWAYS_INLINE Register::Register(const JSValue& v)
107 u.value = JSValue::encode(v);
110 ALWAYS_INLINE Register& Register::operator=(const JSValue& v)
112 u.value = JSValue::encode(v);
116 ALWAYS_INLINE JSValue Register::jsValue() const
118 return JSValue::decode(u.value);
121 ALWAYS_INLINE EncodedJSValue Register::encodedJSValue() const
126 // Interpreter functions
128 ALWAYS_INLINE Register& Register::operator=(CallFrame* callFrame)
130 u.callFrame = callFrame;
134 ALWAYS_INLINE Register& Register::operator=(CodeBlock* codeBlock)
136 u.codeBlock = codeBlock;
140 ALWAYS_INLINE Register& Register::operator=(Instruction* vPC)
146 ALWAYS_INLINE Register& Register::operator=(InlineCallFrame* inlineCallFrame)
148 u.inlineCallFrame = inlineCallFrame;
152 ALWAYS_INLINE int32_t Register::i() const
154 return jsValue().asInt32();
157 ALWAYS_INLINE CallFrame* Register::callFrame() const
162 ALWAYS_INLINE CodeBlock* Register::codeBlock() const
167 ALWAYS_INLINE Instruction* Register::vPC() const
172 ALWAYS_INLINE InlineCallFrame* Register::asInlineCallFrame() const
174 return u.inlineCallFrame;
177 ALWAYS_INLINE int32_t Register::unboxedInt32() const
179 return u.encodedValue.asBits.payload;
182 ALWAYS_INLINE bool Register::unboxedBoolean() const
184 return !!u.encodedValue.asBits.payload;
187 ALWAYS_INLINE JSCell* Register::unboxedCell() const
190 return u.encodedValue.ptr;
192 return bitwise_cast<JSCell*>(u.encodedValue.asBits.payload);
200 template<> struct VectorTraits<JSC::Register> : VectorTraitsBase<true, JSC::Register> { };