webkitgtk-2.4.11webkitgtk-2.4.11

1 files changed, 43 insertions, 146 deletions

diff --git a/Source/JavaScriptCore/runtime/JSCJSValueInlines.h b/Source/JavaScriptCore/runtime/JSCJSValueInlines.h
index 6ce961517..b34adf809 100644
--- a/Source/JavaScriptCore/runtime/JSCJSValueInlines.h
+++ b/Source/JavaScriptCore/runtime/JSCJSValueInlines.h
@@ -26,14 +26,10 @@
 #ifndef JSValueInlines_h
 #define JSValueInlines_h
 
-#include "ExceptionHelpers.h"
-#include "Identifier.h"
 #include "InternalFunction.h"
 #include "JSCJSValue.h"
 #include "JSCellInlines.h"
-#include "JSObject.h"
 #include "JSFunction.h"
-#include <wtf/text/StringImpl.h>
 
 namespace JSC {
 
@@ -46,7 +42,7 @@ ALWAYS_INLINE int32_t JSValue::toInt32(ExecState* exec) const
 
 inline uint32_t JSValue::toUInt32(ExecState* exec) const
 {
-    // See comment on JSC::toUInt32, in JSCJSValue.h.
+    // See comment on JSC::toUInt32, above.
     return toInt32(exec);
 }
 
@@ -69,7 +65,7 @@ inline double JSValue::asNumber() const
 
 inline JSValue jsNaN()
 {
-    return JSValue(PNaN);
+    return JSValue(QNaN);
 }
 
 inline JSValue::JSValue(char i)
@@ -214,10 +210,10 @@ inline JSValue::JSValue(const JSCell* ptr)
     u.asBits.payload = reinterpret_cast<int32_t>(const_cast<JSCell*>(ptr));
 }
 
-inline JSValue::operator bool() const
+inline JSValue::operator UnspecifiedBoolType*() const
 {
     ASSERT(tag() != DeletedValueTag);
-    return tag() != EmptyValueTag;
+    return tag() != EmptyValueTag ? reinterpret_cast<UnspecifiedBoolType*>(1) : 0;
 }
 
 inline bool JSValue::operator==(const JSValue& other) const
@@ -305,7 +301,6 @@ ALWAYS_INLINE JSCell* JSValue::asCell() const
 
 ALWAYS_INLINE JSValue::JSValue(EncodeAsDoubleTag, double d)
 {
-    ASSERT(!isImpureNaN(d));
     u.asDouble = d;
 }
 
@@ -315,7 +310,7 @@ inline JSValue::JSValue(int i)
     u.asBits.payload = i;
 }
 
-#if !ENABLE(JIT)
+#if ENABLE(LLINT_C_LOOP)
 inline JSValue::JSValue(int32_t tag, int32_t payload)
 {
     u.asBits.tag = tag;
@@ -330,7 +325,7 @@ inline bool JSValue::isNumber() const
 
 inline bool JSValue::isBoolean() const
 {
-    return tag() == BooleanTag;
+    return isTrue() || isFalse();
 }
 
 inline bool JSValue::asBoolean() const
@@ -363,9 +358,9 @@ inline JSValue::JSValue(const JSCell* ptr)
     u.asInt64 = reinterpret_cast<uintptr_t>(const_cast<JSCell*>(ptr));
 }
 
-inline JSValue::operator bool() const
+inline JSValue::operator UnspecifiedBoolType*() const
 {
-    return u.asInt64;
+    return u.asInt64 ? reinterpret_cast<UnspecifiedBoolType*>(1) : 0;
 }
 
 inline bool JSValue::operator==(const JSValue& other) const
@@ -472,7 +467,6 @@ inline double reinterpretInt64ToDouble(int64_t value)
 
 ALWAYS_INLINE JSValue::JSValue(EncodeAsDoubleTag, double d)
 {
-    ASSERT(!isImpureNaN(d));
     u.asInt64 = reinterpretDoubleToInt64(d) + DoubleEncodeOffset;
 }
 
@@ -500,43 +494,25 @@ ALWAYS_INLINE JSCell* JSValue::asCell() const
 
 #endif // USE(JSVALUE64)
 
-inline int64_t tryConvertToInt52(double number)
-{
-    if (number != number)
-        return JSValue::notInt52;
-#if OS(WINDOWS) && CPU(X86)
-    // The VS Compiler for 32-bit builds generates a floating point error when attempting to cast
-    // from an infinity to a 64-bit integer. We leave this routine with the floating point error
-    // left in a register, causing undefined behavior in later floating point operations.
-    //
-    // To avoid this issue, we check for infinity here, and return false in that case.
-    if (std::isinf(number))
-        return JSValue::notInt52;
-#endif
-    int64_t asInt64 = static_cast<int64_t>(number);
-    if (asInt64 != number)
-        return JSValue::notInt52;
-    if (!asInt64 && std::signbit(number))
-        return JSValue::notInt52;
-    if (asInt64 >= (static_cast<int64_t>(1) << (JSValue::numberOfInt52Bits - 1)))
-        return JSValue::notInt52;
-    if (asInt64 < -(static_cast<int64_t>(1) << (JSValue::numberOfInt52Bits - 1)))
-        return JSValue::notInt52;
-    return asInt64;
-}
-
-inline bool isInt52(double number)
-{
-    return tryConvertToInt52(number) != JSValue::notInt52;
-}
-
 inline bool JSValue::isMachineInt() const
 {
     if (isInt32())
         return true;
     if (!isNumber())
         return false;
-    return isInt52(asDouble());
+    double number = asDouble();
+    if (number != number)
+        return false;
+    int64_t asInt64 = static_cast<int64_t>(number);
+    if (asInt64 != number)
+        return false;
+    if (!asInt64 && std::signbit(number))
+        return false;
+    if (asInt64 >= (static_cast<int64_t>(1) << (numberOfInt52Bits - 1)))
+        return false;
+    if (asInt64 < -(static_cast<int64_t>(1) << (numberOfInt52Bits - 1)))
+        return false;
+    return true;
 }
 
 inline int64_t JSValue::asMachineInt() const
@@ -552,14 +528,9 @@ inline bool JSValue::isString() const
     return isCell() && asCell()->isString();
 }
 
-inline bool JSValue::isSymbol() const
-{
-    return isCell() && asCell()->isSymbol();
-}
-
 inline bool JSValue::isPrimitive() const
 {
-    return !isCell() || asCell()->isString() || asCell()->isSymbol();
+    return !isCell() || asCell()->isString();
 }
 
 inline bool JSValue::isGetterSetter() const
@@ -567,11 +538,6 @@ inline bool JSValue::isGetterSetter() const
     return isCell() && asCell()->isGetterSetter();
 }
 
-inline bool JSValue::isCustomGetterSetter() const
-{
-    return isCell() && asCell()->isCustomGetterSetter();
-}
-
 inline bool JSValue::isObject() const
 {
     return isCell() && asCell()->isObject();
@@ -612,17 +578,6 @@ ALWAYS_INLINE bool JSValue::getUInt32(uint32_t& v) const
     return false;
 }
 
-ALWAYS_INLINE Identifier JSValue::toPropertyKey(ExecState* exec) const
-{
-    if (isString())
-        return asString(*this)->toIdentifier(exec);
-
-    JSValue primitive = toPrimitive(exec, PreferString);
-    if (primitive.isSymbol())
-        return Identifier::fromUid(asSymbol(primitive)->privateName());
-    return primitive.toString(exec)->toIdentifier(exec);
-}
-
 inline JSValue JSValue::toPrimitive(ExecState* exec, PreferredPrimitiveType preferredType) const
 {
     return isCell() ? asCell()->toPrimitive(exec, preferredType) : asValue();
@@ -653,7 +608,7 @@ inline bool JSValue::getPrimitiveNumber(ExecState* exec, double& number, JSValue
         return true;
     }
     ASSERT(isUndefined());
-    number = PNaN;
+    number = QNaN;
     value = *this;
     return true;
 }
@@ -682,16 +637,6 @@ inline bool JSValue::isFunction() const
     return isCell() && (asCell()->inherits(JSFunction::info()) || asCell()->inherits(InternalFunction::info()));
 }
 
-// FIXME: We could do this in a smarter way. See: https://bugs.webkit.org/show_bug.cgi?id=153670
-inline bool JSValue::isConstructor() const
-{
-    if (isFunction()) {
-        ConstructData data;
-        return getConstructData(*this, data) != ConstructTypeNone;
-    }
-    return false;
-}
-
 // this method is here to be after the inline declaration of JSCell::inherits
 inline bool JSValue::inherits(const ClassInfo* classInfo) const
 {
@@ -700,49 +645,45 @@ inline bool JSValue::inherits(const ClassInfo* classInfo) const
 
 inline JSValue JSValue::toThis(ExecState* exec, ECMAMode ecmaMode) const
 {
-    return isCell() ? asCell()->methodTable(exec->vm())->toThis(asCell(), exec, ecmaMode) : toThisSlowCase(exec, ecmaMode);
+    return isCell() ? asCell()->methodTable()->toThis(asCell(), exec, ecmaMode) : toThisSlowCase(exec, ecmaMode);
 }
 
-ALWAYS_INLINE JSValue JSValue::get(ExecState* exec, PropertyName propertyName) const
+inline JSValue JSValue::get(ExecState* exec, PropertyName propertyName) const
 {
-    PropertySlot slot(asValue(), PropertySlot::InternalMethodType::Get);
+    PropertySlot slot(asValue());
     return get(exec, propertyName, slot);
 }
 
-ALWAYS_INLINE JSValue JSValue::get(ExecState* exec, PropertyName propertyName, PropertySlot& slot) const
-{
-    return getPropertySlot(exec, propertyName, slot) ? 
-        slot.getValue(exec, propertyName) : jsUndefined();
-}
-
-ALWAYS_INLINE bool JSValue::getPropertySlot(ExecState* exec, PropertyName propertyName, PropertySlot& slot) const
+inline JSValue JSValue::get(ExecState* exec, PropertyName propertyName, PropertySlot& slot) const
 {
     // If this is a primitive, we'll need to synthesize the prototype -
     // and if it's a string there are special properties to check first.
     JSObject* object;
     if (UNLIKELY(!isObject())) {
-        if (isString() && asString(*this)->getStringPropertySlot(exec, propertyName, slot))
-            return true;
+        if (isCell() && asString(*this)->getStringPropertySlot(exec, propertyName, slot))
+            return slot.getValue(exec, propertyName);
         object = synthesizePrototype(exec);
     } else
         object = asObject(asCell());
     
-    return object->getPropertySlot(exec, propertyName, slot);
+    if (object->getPropertySlot(exec, propertyName, slot))
+        return slot.getValue(exec, propertyName);
+    return jsUndefined();
 }
 
-ALWAYS_INLINE JSValue JSValue::get(ExecState* exec, unsigned propertyName) const
+inline JSValue JSValue::get(ExecState* exec, unsigned propertyName) const
 {
-    PropertySlot slot(asValue(), PropertySlot::InternalMethodType::Get);
+    PropertySlot slot(asValue());
     return get(exec, propertyName, slot);
 }
 
-ALWAYS_INLINE JSValue JSValue::get(ExecState* exec, unsigned propertyName, PropertySlot& slot) const
+inline JSValue JSValue::get(ExecState* exec, unsigned propertyName, PropertySlot& slot) const
 {
     // If this is a primitive, we'll need to synthesize the prototype -
     // and if it's a string there are special properties to check first.
     JSObject* object;
     if (UNLIKELY(!isObject())) {
-        if (isString() && asString(*this)->getStringPropertySlot(exec, propertyName, slot))
+        if (isCell() && asString(*this)->getStringPropertySlot(exec, propertyName, slot))
             return slot.getValue(exec, propertyName);
         object = synthesizePrototype(exec);
     } else
@@ -759,25 +700,7 @@ inline void JSValue::put(ExecState* exec, PropertyName propertyName, JSValue val
         putToPrimitive(exec, propertyName, value, slot);
         return;
     }
-    asCell()->methodTable(exec->vm())->put(asCell(), exec, propertyName, value, slot);
-}
-
-ALWAYS_INLINE void JSValue::putInline(ExecState* exec, PropertyName propertyName, JSValue value, PutPropertySlot& slot)
-{
-    if (UNLIKELY(!isCell())) {
-        putToPrimitive(exec, propertyName, value, slot);
-        return;
-    }
-    JSCell* cell = asCell();
-    auto putMethod = cell->methodTable(exec->vm())->put;
-    if (LIKELY(putMethod == JSObject::put)) {
-        JSObject::putInline(cell, exec, propertyName, value, slot);
-        return;
-    }
-
-    PutPropertySlot otherSlot = slot;
-    putMethod(cell, exec, propertyName, value, otherSlot);
-    slot = otherSlot;
+    asCell()->methodTable()->put(asCell(), exec, propertyName, value, slot);
 }
 
 inline void JSValue::putByIndex(ExecState* exec, unsigned propertyName, JSValue value, bool shouldThrow)
@@ -786,7 +709,7 @@ inline void JSValue::putByIndex(ExecState* exec, unsigned propertyName, JSValue
         putToPrimitiveByIndex(exec, propertyName, value, shouldThrow);
         return;
     }
-    asCell()->methodTable(exec->vm())->putByIndex(asCell(), exec, propertyName, value, shouldThrow);
+    asCell()->methodTable()->putByIndex(asCell(), exec, propertyName, value, shouldThrow);
 }
 
 inline JSValue JSValue::structureOrUndefined() const
@@ -807,7 +730,6 @@ inline bool JSValue::equal(ExecState* exec, JSValue v1, JSValue v2)
 
 ALWAYS_INLINE bool JSValue::equalSlowCaseInline(ExecState* exec, JSValue v1, JSValue v2)
 {
-    VM& vm = exec->vm();
     do {
         if (v1.isNumber() && v2.isNumber())
             return v1.asNumber() == v2.asNumber();
@@ -815,20 +737,20 @@ ALWAYS_INLINE bool JSValue::equalSlowCaseInline(ExecState* exec, JSValue v1, JSV
         bool s1 = v1.isString();
         bool s2 = v2.isString();
         if (s1 && s2)
-            return WTF::equal(*asString(v1)->value(exec).impl(), *asString(v2)->value(exec).impl());
+            return asString(v1)->value(exec) == asString(v2)->value(exec);
 
         if (v1.isUndefinedOrNull()) {
             if (v2.isUndefinedOrNull())
                 return true;
             if (!v2.isCell())
                 return false;
-            return v2.asCell()->structure(vm)->masqueradesAsUndefined(exec->lexicalGlobalObject());
+            return v2.asCell()->structure()->masqueradesAsUndefined(exec->lexicalGlobalObject());
         }
 
         if (v2.isUndefinedOrNull()) {
             if (!v1.isCell())
                 return false;
-            return v1.asCell()->structure(vm)->masqueradesAsUndefined(exec->lexicalGlobalObject());
+            return v1.asCell()->structure()->masqueradesAsUndefined(exec->lexicalGlobalObject());
         }
 
         if (v1.isObject()) {
@@ -853,14 +775,6 @@ ALWAYS_INLINE bool JSValue::equalSlowCaseInline(ExecState* exec, JSValue v1, JSV
             continue;
         }
 
-        bool sym1 = v1.isSymbol();
-        bool sym2 = v2.isSymbol();
-        if (sym1 || sym2) {
-            if (sym1 && sym2)
-                return asSymbol(v1)->privateName() == asSymbol(v2)->privateName();
-            return false;
-        }
-
         if (s1 || s2) {
             double d1 = v1.toNumber(exec);
             double d2 = v2.toNumber(exec);
@@ -885,9 +799,7 @@ ALWAYS_INLINE bool JSValue::strictEqualSlowCaseInline(ExecState* exec, JSValue v
     ASSERT(v1.isCell() && v2.isCell());
 
     if (v1.asCell()->isString() && v2.asCell()->isString())
-        return WTF::equal(*asString(v1)->value(exec).impl(), *asString(v2)->value(exec).impl());
-    if (v1.asCell()->isSymbol() && v2.asCell()->isSymbol())
-        return asSymbol(v1)->privateName() == asSymbol(v2)->privateName();
+        return asString(v1)->value(exec) == asString(v2)->value(exec);
 
     return v1 == v2;
 }
@@ -906,13 +818,6 @@ inline bool JSValue::strictEqual(ExecState* exec, JSValue v1, JSValue v2)
     return strictEqualSlowCaseInline(exec, v1, v2);
 }
 
-inline int32_t JSValue::asInt32ForArithmetic() const
-{
-    if (isBoolean())
-        return asBoolean();
-    return asInt32();
-}
-
 inline TriState JSValue::pureStrictEqual(JSValue v1, JSValue v2)
 {
     if (v1.isInt32() && v2.isInt32())
@@ -929,7 +834,7 @@ inline TriState JSValue::pureStrictEqual(JSValue v1, JSValue v2)
         const StringImpl* v2String = asString(v2)->tryGetValueImpl();
         if (!v1String || !v2String)
             return MixedTriState;
-        return triState(WTF::equal(*v1String, *v2String));
+        return triState(WTF::equal(v1String, v2String));
     }
     
     return triState(v1 == v2);
@@ -946,14 +851,6 @@ inline TriState JSValue::pureToBoolean() const
     return isTrue() ? TrueTriState : FalseTriState;
 }
 
-ALWAYS_INLINE bool JSValue::requireObjectCoercible(ExecState* exec) const
-{
-    if (!isUndefinedOrNull())
-        return true;
-    exec->vm().throwException(exec, createNotAnObjectError(exec, *this));
-    return false;
-}
-
 } // namespace JSC
 
 #endif // JSValueInlines_h