Import Qt5x2 branch of QtWebkit for Qt 5.2

Importing a new snapshot of webkit.

Change-Id: I2d01ad12cdc8af8cb015387641120a9d7ea5f10c
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@digia.com>

1 files changed, 0 insertions, 323 deletions

diff --git a/Source/JavaScriptCore/runtime/JSValue.cpp b/Source/JavaScriptCore/runtime/JSValue.cpp
deleted file mode 100644
index d9253730f..000000000
--- a/Source/JavaScriptCore/runtime/JSValue.cpp
+++ /dev/null
@@ -1,323 +0,0 @@
-/*
- *  Copyright (C) 1999-2001 Harri Porten (porten@kde.org)
- *  Copyright (C) 2001 Peter Kelly (pmk@post.com)
- *  Copyright (C) 2003, 2007, 2008, 2012 Apple Inc. All rights reserved.
- *
- *  This library is free software; you can redistribute it and/or
- *  modify it under the terms of the GNU Library General Public
- *  License as published by the Free Software Foundation; either
- *  version 2 of the License, or (at your option) any later version.
- *
- *  This library is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- *  Library General Public License for more details.
- *
- *  You should have received a copy of the GNU Library General Public License
- *  along with this library; see the file COPYING.LIB.  If not, write to
- *  the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
- *  Boston, MA 02110-1301, USA.
- *
- */
-
-#include "config.h"
-#include "JSValue.h"
-
-#include "BooleanConstructor.h"
-#include "BooleanPrototype.h"
-#include "Error.h"
-#include "ExceptionHelpers.h"
-#include "GetterSetter.h"
-#include "JSGlobalObject.h"
-#include "JSFunction.h"
-#include "JSNotAnObject.h"
-#include "NumberObject.h"
-#include <wtf/MathExtras.h>
-#include <wtf/StringExtras.h>
-
-namespace JSC {
-
-static const double D32 = 4294967296.0;
-
-// ECMA 9.4
-double JSValue::toInteger(ExecState* exec) const
-{
-    if (isInt32())
-        return asInt32();
-    double d = toNumber(exec);
-    return isnan(d) ? 0.0 : trunc(d);
-}
-
-double JSValue::toIntegerPreserveNaN(ExecState* exec) const
-{
-    if (isInt32())
-        return asInt32();
-    return trunc(toNumber(exec));
-}
-
-double JSValue::toNumberSlowCase(ExecState* exec) const
-{
-    ASSERT(!isInt32() && !isDouble());
-    if (isCell())
-        return asCell()->toNumber(exec);
-    if (isTrue())
-        return 1.0;
-    return isUndefined() ? QNaN : 0; // null and false both convert to 0.
-}
-
-JSObject* JSValue::toObjectSlowCase(ExecState* exec, JSGlobalObject* globalObject) const
-{
-    ASSERT(!isCell());
-
-    if (isInt32() || isDouble())
-        return constructNumber(exec, globalObject, asValue());
-    if (isTrue() || isFalse())
-        return constructBooleanFromImmediateBoolean(exec, globalObject, asValue());
-
-    ASSERT(isUndefinedOrNull());
-    throwError(exec, createNotAnObjectError(exec, *this));
-    return JSNotAnObject::create(exec);
-}
-
-JSObject* JSValue::toThisObjectSlowCase(ExecState* exec) const
-{
-    ASSERT(!isCell());
-
-    if (isInt32() || isDouble())
-        return constructNumber(exec, exec->lexicalGlobalObject(), asValue());
-    if (isTrue() || isFalse())
-        return constructBooleanFromImmediateBoolean(exec, exec->lexicalGlobalObject(), asValue());
-    ASSERT(isUndefinedOrNull());
-    return exec->globalThisValue();
-}
-
-JSObject* JSValue::synthesizePrototype(ExecState* exec) const
-{
-    if (isCell()) {
-        ASSERT(isString());
-        return exec->lexicalGlobalObject()->stringPrototype();
-    }
-
-    if (isNumber())
-        return exec->lexicalGlobalObject()->numberPrototype();
-    if (isBoolean())
-        return exec->lexicalGlobalObject()->booleanPrototype();
-
-    ASSERT(isUndefinedOrNull());
-    throwError(exec, createNotAnObjectError(exec, *this));
-    return JSNotAnObject::create(exec);
-}
-
-// ECMA 8.7.2
-void JSValue::putToPrimitive(ExecState* exec, PropertyName propertyName, JSValue value, PutPropertySlot& slot)
-{
-    JSGlobalData& globalData = exec->globalData();
-
-    unsigned index = propertyName.asIndex();
-    if (index != PropertyName::NotAnIndex) {
-        putToPrimitiveByIndex(exec, index, value, slot.isStrictMode());
-        return;
-    }
-
-    // Check if there are any setters or getters in the prototype chain
-    JSObject* obj = synthesizePrototype(exec);
-    JSValue prototype;
-    if (propertyName != exec->propertyNames().underscoreProto) {
-        for (; !obj->structure()->hasReadOnlyOrGetterSetterPropertiesExcludingProto(); obj = asObject(prototype)) {
-            prototype = obj->prototype();
-            if (prototype.isNull()) {
-                if (slot.isStrictMode())
-                    throwTypeError(exec, StrictModeReadonlyPropertyWriteError);
-                return;
-            }
-        }
-    }
-
-    for (; ; obj = asObject(prototype)) {
-        unsigned attributes;
-        JSCell* specificValue;
-        PropertyOffset offset = obj->structure()->get(globalData, propertyName, attributes, specificValue);
-        if (offset != invalidOffset) {
-            if (attributes & ReadOnly) {
-                if (slot.isStrictMode())
-                    throwError(exec, createTypeError(exec, StrictModeReadonlyPropertyWriteError));
-                return;
-            }
-
-            JSValue gs = obj->getDirectOffset(offset);
-            if (gs.isGetterSetter()) {
-                JSObject* setterFunc = asGetterSetter(gs)->setter();        
-                if (!setterFunc) {
-                    if (slot.isStrictMode())
-                        throwError(exec, createTypeError(exec, ASCIILiteral("setting a property that has only a getter")));
-                    return;
-                }
-                
-                CallData callData;
-                CallType callType = setterFunc->methodTable()->getCallData(setterFunc, callData);
-                MarkedArgumentBuffer args;
-                args.append(value);
-
-                // If this is WebCore's global object then we need to substitute the shell.
-                call(exec, setterFunc, callType, callData, *this, args);
-                return;
-            }
-
-            // If there's an existing property on the object or one of its 
-            // prototypes it should be replaced, so break here.
-            break;
-        }
-
-        prototype = obj->prototype();
-        if (prototype.isNull())
-            break;
-    }
-    
-    if (slot.isStrictMode())
-        throwTypeError(exec, StrictModeReadonlyPropertyWriteError);
-    return;
-}
-
-void JSValue::putToPrimitiveByIndex(ExecState* exec, unsigned propertyName, JSValue value, bool shouldThrow)
-{
-    if (propertyName > MAX_ARRAY_INDEX) {
-        PutPropertySlot slot(shouldThrow);
-        putToPrimitive(exec, Identifier::from(exec, propertyName), value, slot);
-        return;
-    }
-    
-    if (synthesizePrototype(exec)->attemptToInterceptPutByIndexOnHoleForPrototype(exec, *this, propertyName, value, shouldThrow))
-        return;
-    
-    if (shouldThrow)
-        throwTypeError(exec, StrictModeReadonlyPropertyWriteError);
-}
-
-char* JSValue::description() const
-{
-    static const size_t size = 256;
-    static char description[size];
-
-    if (!*this)
-        snprintf(description, size, "<JSValue()>");
-    else if (isInt32())
-        snprintf(description, size, "Int32: %d", asInt32());
-    else if (isDouble()) {
-#if USE(JSVALUE64)
-        snprintf(description, size, "Double: %lld, %lf", (long long)reinterpretDoubleToInt64(asDouble()), asDouble());
-#else
-        union {
-            double asDouble;
-            uint32_t asTwoInt32s[2];
-        } u;
-        u.asDouble = asDouble();
-        snprintf(description, size, "Double: %08x:%08x, %lf", u.asTwoInt32s[1], u.asTwoInt32s[0], asDouble());
-#endif
-    } else if (isCell()) {
-        if (asCell()->inherits(&Structure::s_info)) {
-            Structure* structure = jsCast<Structure*>(asCell());
-            snprintf(
-                description, size, "Structure: %p: %s, %s",
-                structure, structure->classInfo()->className,
-                indexingTypeToString(structure->indexingTypeIncludingHistory()));
-        } else {
-            snprintf(
-                description, size, "Cell: %p -> %p (%p: %s, %s)",
-                asCell(), isObject() ? asObject(*this)->butterfly() : 0, asCell()->structure(), asCell()->structure()->classInfo()->className,
-                indexingTypeToString(asCell()->structure()->indexingTypeIncludingHistory()));
-        }
-    } else if (isTrue())
-        snprintf(description, size, "True");
-    else if (isFalse())
-        snprintf(description, size, "False");
-    else if (isNull())
-        snprintf(description, size, "Null");
-    else if (isUndefined())
-        snprintf(description, size, "Undefined");
-    else
-        snprintf(description, size, "INVALID");
-
-    return description;
-}
-
-// This in the ToInt32 operation is defined in section 9.5 of the ECMA-262 spec.
-// Note that this operation is identical to ToUInt32 other than to interpretation
-// of the resulting bit-pattern (as such this metod is also called to implement
-// ToUInt32).
-//
-// The operation can be descibed as round towards zero, then select the 32 least
-// bits of the resulting value in 2s-complement representation.
-int32_t toInt32(double number)
-{
-    int64_t bits = WTF::bitwise_cast<int64_t>(number);
-    int32_t exp = (static_cast<int32_t>(bits >> 52) & 0x7ff) - 0x3ff;
-
-    // If exponent < 0 there will be no bits to the left of the decimal point
-    // after rounding; if the exponent is > 83 then no bits of precision can be
-    // left in the low 32-bit range of the result (IEEE-754 doubles have 52 bits
-    // of fractional precision).
-    // Note this case handles 0, -0, and all infinte, NaN, & denormal value. 
-    if (exp < 0 || exp > 83)
-        return 0;
-
-    // Select the appropriate 32-bits from the floating point mantissa.  If the
-    // exponent is 52 then the bits we need to select are already aligned to the
-    // lowest bits of the 64-bit integer representation of tghe number, no need
-    // to shift.  If the exponent is greater than 52 we need to shift the value
-    // left by (exp - 52), if the value is less than 52 we need to shift right
-    // accordingly.
-    int32_t result = (exp > 52)
-        ? static_cast<int32_t>(bits << (exp - 52))
-        : static_cast<int32_t>(bits >> (52 - exp));
-
-    // IEEE-754 double precision values are stored omitting an implicit 1 before
-    // the decimal point; we need to reinsert this now.  We may also the shifted
-    // invalid bits into the result that are not a part of the mantissa (the sign
-    // and exponent bits from the floatingpoint representation); mask these out.
-    if (exp < 32) {
-        int32_t missingOne = 1 << exp;
-        result &= missingOne - 1;
-        result += missingOne;
-    }
-
-    // If the input value was negative (we could test either 'number' or 'bits',
-    // but testing 'bits' is likely faster) invert the result appropriately.
-    return bits < 0 ? -result : result;
-}
-
-bool JSValue::isValidCallee()
-{
-    return asObject(asCell())->globalObject();
-}
-
-JSString* JSValue::toStringSlowCase(ExecState* exec) const
-{
-    JSGlobalData& globalData = exec->globalData();
-    ASSERT(!isString());
-    if (isInt32())
-        return jsString(&globalData, globalData.numericStrings.add(asInt32()));
-    if (isDouble())
-        return jsString(&globalData, globalData.numericStrings.add(asDouble()));
-    if (isTrue())
-        return globalData.smallStrings.trueString(&globalData);
-    if (isFalse())
-        return globalData.smallStrings.falseString(&globalData);
-    if (isNull())
-        return globalData.smallStrings.nullString(&globalData);
-    if (isUndefined())
-        return globalData.smallStrings.undefinedString(&globalData);
-
-    ASSERT(isCell());
-    JSValue value = asCell()->toPrimitive(exec, PreferString);
-    if (exec->hadException())
-        return jsEmptyString(exec);
-    ASSERT(!value.isObject());
-    return value.toString(exec);
-}
-
-String JSValue::toWTFStringSlowCase(ExecState* exec) const
-{
-    return inlineJSValueNotStringtoString(*this, exec);
-}
-
-} // namespace JSC