JavaScriptCore-521.tar.gz

[apple/javascriptcore.git] / runtime / JSImmediate.cpp

diff --git a/runtime/JSImmediate.cpp b/runtime/JSImmediate.cpp
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+++ b/runtime/JSImmediate.cpp
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+/*
+ *  Copyright (C) 2003-2006, 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 "JSImmediate.h"
+
+#include "BooleanConstructor.h"
+#include "BooleanPrototype.h"
+#include "Error.h"
+#include "ExceptionHelpers.h"
+#include "JSGlobalObject.h"
+#include "JSNotAnObject.h"
+#include "NumberConstructor.h"
+#include "NumberPrototype.h"
+
+namespace JSC {
+
+JSObject* JSImmediate::toThisObject(JSValuePtr v, ExecState* exec)
+{
+    ASSERT(isImmediate(v));
+    if (isNumber(v))
+        return constructNumber(exec, v);
+    if (isBoolean(v))
+        return constructBooleanFromImmediateBoolean(exec, v);
+    if (v.isNull())
+        return exec->globalThisValue();
+    
+    JSNotAnObjectErrorStub* exception = createNotAnObjectErrorStub(exec, v.isNull());
+    exec->setException(exception);
+    return new (exec) JSNotAnObject(exec, exception);
+}
+
+JSObject* JSImmediate::toObject(JSValuePtr v, ExecState* exec)
+{
+    ASSERT(isImmediate(v));
+    if (isNumber(v))
+        return constructNumber(exec, v);
+    if (isBoolean(v))
+        return constructBooleanFromImmediateBoolean(exec, v);
+    
+    JSNotAnObjectErrorStub* exception = createNotAnObjectErrorStub(exec, v.isNull());
+    exec->setException(exception);
+    return new (exec) JSNotAnObject(exec, exception);
+}
+
+JSObject* JSImmediate::prototype(JSValuePtr v, ExecState* exec)
+{
+    ASSERT(isImmediate(v));
+    if (isNumber(v))
+        return exec->lexicalGlobalObject()->numberPrototype();
+    if (isBoolean(v))
+        return exec->lexicalGlobalObject()->booleanPrototype();
+
+    JSNotAnObjectErrorStub* exception = createNotAnObjectErrorStub(exec, v.isNull());
+    exec->setException(exception);
+    return new (exec) JSNotAnObject(exec, exception);
+}
+
+UString JSImmediate::toString(JSValuePtr v)
+{
+    ASSERT(isImmediate(v));
+    if (isIntegerNumber(v))
+        return UString::from(getTruncatedInt32(v));
+#if USE(ALTERNATE_JSIMMEDIATE)
+    if (isNumber(v)) {
+        ASSERT(isDoubleNumber(v));
+        double value = doubleValue(v);
+        if (value == 0.0) // +0.0 or -0.0
+            return "0";
+        return UString::from(value);
+    }
+#else
+        ASSERT(!isNumber(v));
+#endif
+    if (jsBoolean(false) == v)
+        return "false";
+    if (jsBoolean(true) == v)
+        return "true";
+    if (v.isNull())
+        return "null";
+    ASSERT(v.isUndefined());
+    return "undefined";
+}
+
+NEVER_INLINE double JSImmediate::nonInlineNaN()
+{
+    return std::numeric_limits<double>::quiet_NaN();
+}
+
+} // namespace JSC