--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/JavaScriptCore/runtime/JSValue.cpp	Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,190 @@
+/*
+ *  Copyright (C) 1999-2001 Harri Porten (porten@kde.org)
+ *  Copyright (C) 2001 Peter Kelly (pmk@post.com)
+ *  Copyright (C) 2003, 2007, 2008 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 "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));
+}
+
+JSObject* JSValue::toObjectSlowCase(ExecState* exec) const
+{
+    ASSERT(!isCell());
+
+    if (isInt32() || isDouble())
+        return constructNumber(exec, asValue());
+    if (isTrue() || isFalse())
+        return constructBooleanFromImmediateBoolean(exec, asValue());
+    ASSERT(isUndefinedOrNull());
+    JSNotAnObjectErrorStub* exception = createNotAnObjectErrorStub(exec, isNull());
+    throwError(exec, exception);
+    return new (exec) JSNotAnObject(exec, exception);
+}
+
+JSObject* JSValue::toThisObjectSlowCase(ExecState* exec) const
+{
+    ASSERT(!isCell());
+
+    if (isInt32() || isDouble())
+        return constructNumber(exec, asValue());
+    if (isTrue() || isFalse())
+        return constructBooleanFromImmediateBoolean(exec, asValue());
+    ASSERT(isUndefinedOrNull());
+    return exec->globalThisValue();
+}
+
+JSObject* JSValue::synthesizeObject(ExecState* exec) const
+{
+    ASSERT(!isCell());
+    if (isNumber())
+        return constructNumber(exec, asValue());
+    if (isBoolean())
+        return constructBooleanFromImmediateBoolean(exec, asValue());
+    
+    JSNotAnObjectErrorStub* exception = createNotAnObjectErrorStub(exec, isNull());
+    throwError(exec, exception);
+    return new (exec) JSNotAnObject(exec, exception);
+}
+
+JSObject* JSValue::synthesizePrototype(ExecState* exec) const
+{
+    ASSERT(!isCell());
+    if (isNumber())
+        return exec->lexicalGlobalObject()->numberPrototype();
+    if (isBoolean())
+        return exec->lexicalGlobalObject()->booleanPrototype();
+
+    JSNotAnObjectErrorStub* exception = createNotAnObjectErrorStub(exec, isNull());
+    throwError(exec, exception);
+    return new (exec) JSNotAnObject(exec, exception);
+}
+
+#ifndef NDEBUG
+char* JSValue::description()
+{
+    static const size_t size = 32;
+    static char description[size];
+
+    if (!*this)
+        snprintf(description, size, "<JSValue()>");
+    else if (isInt32())
+        snprintf(description, size, "Int32: %d", asInt32());
+    else if (isDouble())
+        snprintf(description, size, "Double: %lf", asDouble());
+    else if (isCell())
+        snprintf(description, size, "Cell: %p", asCell());
+    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;
+}
+#endif
+
+int32_t toInt32SlowCase(double d, bool& ok)
+{
+    ok = true;
+
+    if (d >= -D32 / 2 && d < D32 / 2)
+        return static_cast<int32_t>(d);
+
+    if (isnan(d) || isinf(d)) {
+        ok = false;
+        return 0;
+    }
+
+    double d32 = fmod(trunc(d), D32);
+    if (d32 >= D32 / 2)
+        d32 -= D32;
+    else if (d32 < -D32 / 2)
+        d32 += D32;
+    return static_cast<int32_t>(d32);
+}
+
+uint32_t toUInt32SlowCase(double d, bool& ok)
+{
+    ok = true;
+
+    if (d >= 0.0 && d < D32)
+        return static_cast<uint32_t>(d);
+
+    if (isnan(d) || isinf(d)) {
+        ok = false;
+        return 0;
+    }
+
+    double d32 = fmod(trunc(d), D32);
+    if (d32 < 0)
+        d32 += D32;
+    return static_cast<uint32_t>(d32);
+}
+
+NEVER_INLINE double nonInlineNaN()
+{
+#if OS(SYMBIAN)
+    return nanval();
+#else
+    return std::numeric_limits<double>::quiet_NaN();
+#endif
+}
+
+bool JSValue::isValidCallee()
+{
+    return asObject(asObject(asCell())->getAnonymousValue(0))->isGlobalObject();
+}
+
+} // namespace JSC