webkitgtk-2.4.11webkitgtk-2.4.11

1 files changed, 21 insertions, 121 deletions

diff --git a/Source/JavaScriptCore/runtime/JSCJSValue.cpp b/Source/JavaScriptCore/runtime/JSCJSValue.cpp
index b9dd0a417..cca6888bf 100644
--- a/Source/JavaScriptCore/runtime/JSCJSValue.cpp
+++ b/Source/JavaScriptCore/runtime/JSCJSValue.cpp
@@ -25,7 +25,6 @@
 
 #include "BooleanConstructor.h"
 #include "BooleanPrototype.h"
-#include "CustomGetterSetter.h"
 #include "Error.h"
 #include "ExceptionHelpers.h"
 #include "GetterSetter.h"
@@ -34,7 +33,6 @@
 #include "JSGlobalObject.h"
 #include "JSNotAnObject.h"
 #include "NumberObject.h"
-#include "StructureInlines.h"
 #include <wtf/MathExtras.h>
 #include <wtf/StringExtras.h>
 
@@ -56,18 +54,6 @@ double JSValue::toIntegerPreserveNaN(ExecState* exec) const
     return trunc(toNumber(exec));
 }
 
-double JSValue::toLength(ExecState* exec) const
-{
-    // ECMA 7.1.15
-    // http://www.ecma-international.org/ecma-262/6.0/#sec-tolength
-    double d = toInteger(exec);
-    if (d <= 0)
-        return 0.0;
-    if (std::isinf(d))
-        return 9007199254740991.0; // 2 ** 53 - 1
-    return std::min(d, 9007199254740991.0);
-}
-
 double JSValue::toNumberSlowCase(ExecState* exec) const
 {
     ASSERT(!isInt32() && !isDouble());
@@ -75,7 +61,7 @@ double JSValue::toNumberSlowCase(ExecState* exec) const
         return asCell()->toNumber(exec);
     if (isTrue())
         return 1.0;
-    return isUndefined() ? PNaN : 0; // null and false both convert to 0.
+    return isUndefined() ? QNaN : 0; // null and false both convert to 0.
 }
 
 JSObject* JSValue::toObjectSlowCase(ExecState* exec, JSGlobalObject* globalObject) const
@@ -111,10 +97,8 @@ JSValue JSValue::toThisSlowCase(ExecState* exec, ECMAMode ecmaMode) const
 JSObject* JSValue::synthesizePrototype(ExecState* exec) const
 {
     if (isCell()) {
-        if (isString())
-            return exec->lexicalGlobalObject()->stringPrototype();
-        ASSERT(isSymbol());
-        return exec->lexicalGlobalObject()->symbolPrototype();
+        ASSERT(isString());
+        return exec->lexicalGlobalObject()->stringPrototype();
     }
 
     if (isNumber())
@@ -133,8 +117,9 @@ void JSValue::putToPrimitive(ExecState* exec, PropertyName propertyName, JSValue
 {
     VM& vm = exec->vm();
 
-    if (Optional<uint32_t> index = parseIndex(propertyName)) {
-        putToPrimitiveByIndex(exec, index.value(), value, slot.isStrictMode());
+    unsigned index = propertyName.asIndex();
+    if (index != PropertyName::NotAnIndex) {
+        putToPrimitiveByIndex(exec, index, value, slot.isStrictMode());
         return;
     }
 
@@ -154,7 +139,8 @@ void JSValue::putToPrimitive(ExecState* exec, PropertyName propertyName, JSValue
 
     for (; ; obj = asObject(prototype)) {
         unsigned attributes;
-        PropertyOffset offset = obj->structure()->get(vm, propertyName, attributes);
+        JSCell* specificValue;
+        PropertyOffset offset = obj->structure()->get(vm, propertyName, attributes, specificValue);
         if (offset != invalidOffset) {
             if (attributes & ReadOnly) {
                 if (slot.isStrictMode())
@@ -168,11 +154,6 @@ void JSValue::putToPrimitive(ExecState* exec, PropertyName propertyName, JSValue
                 return;
             }
 
-            if (gs.isCustomGetterSetter()) {
-                callCustomSetter(exec, gs, attributes & CustomAccessor, obj, slot.thisValue(), value);
-                return;
-            }
-
             // If there's an existing property on the object or one of its 
             // prototypes it should be replaced, so break here.
             break;
@@ -210,13 +191,6 @@ void JSValue::dump(PrintStream& out) const
 
 void JSValue::dumpInContext(PrintStream& out, DumpContext* context) const
 {
-    dumpInContextAssumingStructure(
-        out, context, (!!*this && isCell()) ? asCell()->structure() : nullptr);
-}
-
-void JSValue::dumpInContextAssumingStructure(
-    PrintStream& out, DumpContext* context, Structure* structure) const
-{
     if (!*this)
         out.print("<JSValue()>");
     else if (isInt32())
@@ -233,7 +207,7 @@ void JSValue::dumpInContextAssumingStructure(
         out.printf("Double: %08x:%08x, %lf", u.asTwoInt32s[1], u.asTwoInt32s[0], asDouble());
 #endif
     } else if (isCell()) {
-        if (structure->classInfo()->isSubClassOf(JSString::info())) {
+        if (asCell()->inherits(JSString::info())) {
             JSString* string = jsCast<JSString*>(asCell());
             out.print("String");
             if (string->isRope())
@@ -242,62 +216,18 @@ void JSValue::dumpInContextAssumingStructure(
             if (impl) {
                 if (impl->isAtomic())
                     out.print(" (atomic)");
-                if (impl->isAtomic())
+                if (impl->isIdentifier())
                     out.print(" (identifier)");
-                if (impl->isSymbol())
-                    out.print(" (symbol)");
+                if (impl->isEmptyUnique())
+                    out.print(" (unique)");
             } else
                 out.print(" (unresolved)");
             out.print(": ", impl);
-        } else if (structure->classInfo()->isSubClassOf(Structure::info()))
+        } else if (asCell()->inherits(Structure::info()))
             out.print("Structure: ", inContext(*jsCast<Structure*>(asCell()), context));
         else {
             out.print("Cell: ", RawPointer(asCell()));
-            out.print(" (", inContext(*structure, context), ")");
-        }
-#if USE(JSVALUE64)
-        out.print(", ID: ", asCell()->structureID());
-#endif
-    } else if (isTrue())
-        out.print("True");
-    else if (isFalse())
-        out.print("False");
-    else if (isNull())
-        out.print("Null");
-    else if (isUndefined())
-        out.print("Undefined");
-    else
-        out.print("INVALID");
-}
-
-void JSValue::dumpForBacktrace(PrintStream& out) const
-{
-    if (!*this)
-        out.print("<JSValue()>");
-    else if (isInt32())
-        out.printf("%d", asInt32());
-    else if (isDouble())
-        out.printf("%lf", asDouble());
-    else if (isCell()) {
-        if (asCell()->inherits(JSString::info())) {
-            JSString* string = jsCast<JSString*>(asCell());
-            const StringImpl* impl = string->tryGetValueImpl();
-            if (impl)
-                out.print("\"", impl, "\"");
-            else
-                out.print("(unresolved string)");
-        } else if (asCell()->inherits(Structure::info())) {
-            out.print("Structure[ ", asCell()->structure()->classInfo()->className);
-#if USE(JSVALUE64)
-            out.print(" ID: ", asCell()->structureID());
-#endif
-            out.print("]: ", RawPointer(asCell()));
-        } else {
-            out.print("Cell[", asCell()->structure()->classInfo()->className);
-#if USE(JSVALUE64)
-            out.print(" ID: ", asCell()->structureID());
-#endif
-            out.print("]: ", RawPointer(asCell()));
+            out.print(" (", inContext(*asCell()->structure(), context), ")");
         }
     } else if (isTrue())
         out.print("True");
@@ -361,22 +291,12 @@ bool JSValue::isValidCallee()
     return asObject(asCell())->globalObject();
 }
 
-JSString* JSValue::toStringSlowCase(ExecState* exec, bool returnEmptyStringOnError) const
+JSString* JSValue::toStringSlowCase(ExecState* exec) const
 {
-    auto errorValue = [&] () -> JSString* {
-        if (returnEmptyStringOnError)
-            return jsEmptyString(exec);
-        return nullptr;
-    };
-    
     VM& vm = exec->vm();
     ASSERT(!isString());
-    if (isInt32()) {
-        auto integer = asInt32();
-        if (static_cast<unsigned>(integer) <= 9)
-            return vm.smallStrings.singleCharacterString(integer + '0');
-        return jsNontrivialString(&vm, vm.numericStrings.add(integer));
-    }
+    if (isInt32())
+        return jsString(&vm, vm.numericStrings.add(asInt32()));
     if (isDouble())
         return jsString(&vm, vm.numericStrings.add(asDouble()));
     if (isTrue())
@@ -387,38 +307,18 @@ JSString* JSValue::toStringSlowCase(ExecState* exec, bool returnEmptyStringOnErr
         return vm.smallStrings.nullString();
     if (isUndefined())
         return vm.smallStrings.undefinedString();
-    if (isSymbol()) {
-        throwTypeError(exec);
-        return errorValue();
-    }
 
     ASSERT(isCell());
     JSValue value = asCell()->toPrimitive(exec, PreferString);
-    if (vm.exception())
-        return errorValue();
+    if (exec->hadException())
+        return jsEmptyString(exec);
     ASSERT(!value.isObject());
-    JSString* result = value.toString(exec);
-    if (vm.exception())
-        return errorValue();
-    return result;
+    return value.toString(exec);
 }
 
 String JSValue::toWTFStringSlowCase(ExecState* exec) const
 {
-    VM& vm = exec->vm();
-    if (isInt32())
-        return vm.numericStrings.add(asInt32());
-    if (isDouble())
-        return vm.numericStrings.add(asDouble());
-    if (isTrue())
-        return vm.propertyNames->trueKeyword.string();
-    if (isFalse())
-        return vm.propertyNames->falseKeyword.string();
-    if (isNull())
-        return vm.propertyNames->nullKeyword.string();
-    if (isUndefined())
-        return vm.propertyNames->undefinedKeyword.string();
-    return toString(exec)->value(exec);
+    return inlineJSValueNotStringtoString(*this, exec);
 }
 
 } // namespace JSC