diff options
Diffstat (limited to 'JavaScriptCore/runtime/JSValue.h')
| -rw-r--r-- | JavaScriptCore/runtime/JSValue.h | 81 |
1 files changed, 60 insertions, 21 deletions
diff --git a/JavaScriptCore/runtime/JSValue.h b/JavaScriptCore/runtime/JSValue.h index 408c187..fa5b5c0 100644 --- a/JavaScriptCore/runtime/JSValue.h +++ b/JavaScriptCore/runtime/JSValue.h @@ -20,15 +20,14 @@ * */ -#include <stddef.h> // for size_t -#include <stdint.h> - #ifndef JSValue_h #define JSValue_h #include "CallData.h" #include "ConstructData.h" #include <math.h> +#include <stddef.h> // for size_t +#include <stdint.h> #include <wtf/AlwaysInline.h> #include <wtf/Assertions.h> #include <wtf/HashTraits.h> @@ -42,7 +41,6 @@ namespace JSC { class JSImmediate; class JSObject; class JSString; - class MarkStack; class PropertySlot; class PutPropertySlot; class UString; @@ -82,6 +80,7 @@ namespace JSC { enum JSUndefinedTag { JSUndefined }; enum JSTrueTag { JSTrue }; enum JSFalseTag { JSFalse }; + enum EncodeAsDoubleTag { EncodeAsDouble }; JSValue(); JSValue(JSNullTag); @@ -92,6 +91,7 @@ namespace JSC { JSValue(const JSCell* ptr); // Numbers + JSValue(EncodeAsDoubleTag, ExecState*, double); JSValue(ExecState*, double); JSValue(ExecState*, char); JSValue(ExecState*, unsigned char); @@ -130,15 +130,15 @@ namespace JSC { bool isString() const; bool isGetterSetter() const; bool isObject() const; - bool isObject(const ClassInfo*) const; + bool inherits(const ClassInfo*) const; // Extracting the value. bool getBoolean(bool&) const; bool getBoolean() const; // false if not a boolean bool getNumber(double&) const; double uncheckedGetNumber() const; - bool getString(UString&) const; - UString getString() const; // null string if not a string + bool getString(ExecState* exec, UString&) const; + UString getString(ExecState* exec) const; // null string if not a string JSObject* getObject() const; // 0 if not an object CallType getCallData(CallData&); @@ -168,16 +168,14 @@ namespace JSC { uint32_t toUInt32(ExecState*) const; uint32_t toUInt32(ExecState*, bool& ok) const; +#if ENABLE(JSC_ZOMBIES) + bool isZombie() const; +#endif + // Floating point conversions (this is a convenience method for webcore; // signle precision float is not a representation used in JS or JSC). float toFloat(ExecState* exec) const { return static_cast<float>(toNumber(exec)); } - // Garbage collection. - void markChildren(MarkStack&); - bool hasChildren() const; - bool marked() const; - void markDirect(); - // Object operations, with the toObject operation included. JSValue get(ExecState*, const Identifier& propertyName) const; JSValue get(ExecState*, const Identifier& propertyName, PropertySlot&) const; @@ -194,9 +192,9 @@ namespace JSC { static bool equal(ExecState* exec, JSValue v1, JSValue v2); static bool equalSlowCase(ExecState* exec, JSValue v1, JSValue v2); static bool equalSlowCaseInline(ExecState* exec, JSValue v1, JSValue v2); - static bool strictEqual(JSValue v1, JSValue v2); - static bool strictEqualSlowCase(JSValue v1, JSValue v2); - static bool strictEqualSlowCaseInline(JSValue v1, JSValue v2); + static bool strictEqual(ExecState* exec, JSValue v1, JSValue v2); + static bool strictEqualSlowCase(ExecState* exec, JSValue v1, JSValue v2); + static bool strictEqualSlowCaseInline(ExecState* exec, JSValue v1, JSValue v2); JSValue getJSNumber(); // JSValue() if this is not a JSNumber or number object @@ -221,7 +219,8 @@ namespace JSC { enum { FalseTag = 0xfffffffc }; enum { NullTag = 0xfffffffb }; enum { UndefinedTag = 0xfffffffa }; - enum { DeletedValueTag = 0xfffffff9 }; + enum { EmptyValueTag = 0xfffffff9 }; + enum { DeletedValueTag = 0xfffffff8 }; enum { LowestTag = DeletedValueTag }; @@ -286,6 +285,11 @@ namespace JSC { return b ? JSValue(JSValue::JSTrue) : JSValue(JSValue::JSFalse); } + ALWAYS_INLINE JSValue jsDoubleNumber(ExecState* exec, double d) + { + return JSValue(JSValue::EncodeAsDouble, exec, d); + } + ALWAYS_INLINE JSValue jsNumber(ExecState* exec, double d) { return JSValue(exec, d); @@ -380,6 +384,14 @@ namespace JSC { return static_cast<uint32_t>(val); } + // FIXME: We should deprecate this and just use JSValue::asCell() instead. + JSCell* asCell(JSValue); + + inline JSCell* asCell(JSValue value) + { + return value.asCell(); + } + ALWAYS_INLINE int32_t JSValue::toInt32(ExecState* exec) const { if (isInt32()) @@ -430,12 +442,15 @@ namespace JSC { { JSValue v; v.u.asEncodedJSValue = encodedJSValue; +#if ENABLE(JSC_ZOMBIES) + ASSERT(!v.isZombie()); +#endif return v; } inline JSValue::JSValue() { - u.asBits.tag = CellTag; + u.asBits.tag = EmptyValueTag; u.asBits.payload = 0; } @@ -471,19 +486,32 @@ namespace JSC { inline JSValue::JSValue(JSCell* ptr) { - u.asBits.tag = CellTag; + if (ptr) + u.asBits.tag = CellTag; + else + u.asBits.tag = EmptyValueTag; u.asBits.payload = reinterpret_cast<int32_t>(ptr); +#if ENABLE(JSC_ZOMBIES) + ASSERT(!isZombie()); +#endif } inline JSValue::JSValue(const JSCell* ptr) { - u.asBits.tag = CellTag; + if (ptr) + u.asBits.tag = CellTag; + else + u.asBits.tag = EmptyValueTag; u.asBits.payload = reinterpret_cast<int32_t>(const_cast<JSCell*>(ptr)); +#if ENABLE(JSC_ZOMBIES) + ASSERT(!isZombie()); +#endif } inline JSValue::operator bool() const { - return u.asBits.payload || tag() != CellTag; + ASSERT(tag() != DeletedValueTag); + return tag() != EmptyValueTag; } inline bool JSValue::operator==(const JSValue& other) const @@ -575,6 +603,11 @@ namespace JSC { return reinterpret_cast<JSCell*>(u.asBits.payload); } + ALWAYS_INLINE JSValue::JSValue(EncodeAsDoubleTag, ExecState*, double d) + { + u.asDouble = d; + } + inline JSValue::JSValue(ExecState* exec, double d) { const int32_t asInt32 = static_cast<int32_t>(d); @@ -773,11 +806,17 @@ namespace JSC { inline JSValue::JSValue(JSCell* ptr) : m_ptr(ptr) { +#if ENABLE(JSC_ZOMBIES) + ASSERT(!isZombie()); +#endif } inline JSValue::JSValue(const JSCell* ptr) : m_ptr(const_cast<JSCell*>(ptr)) { +#if ENABLE(JSC_ZOMBIES) + ASSERT(!isZombie()); +#endif } inline JSValue::operator bool() const |