1 files changed, 104 insertions, 0 deletions
diff --git a/JavaScriptCore/runtime/JSValue.cpp b/JavaScriptCore/runtime/JSValue.cpp
new file mode 100644
index 0000000..73580b0
--- /dev/null
+++ b/JavaScriptCore/runtime/JSValue.cpp
@@ -0,0 +1,104 @@
+/*
+ *  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 "JSFunction.h"
+#include <wtf/MathExtras.h>
+
+namespace JSC {
+
+static const double D32 = 4294967296.0;
+
+// ECMA 9.4
+double JSValue::toInteger(ExecState* exec) const
+{
+    int32_t i;
+    if (getTruncatedInt32(i))
+        return i;
+    double d = toNumber(exec);
+    return isnan(d) ? 0.0 : trunc(d);
+}
+
+double JSValue::toIntegerPreserveNaN(ExecState* exec) const
+{
+    int32_t i;
+    if (getTruncatedInt32(i))
+        return i;
+    return trunc(toNumber(exec));
+}
+
+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);
+}
+
+int32_t JSValue::toInt32SlowCase(ExecState* exec, bool& ok) const
+{
+    return JSC::toInt32SlowCase(toNumber(exec), ok);
+}
+
+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);
+}
+
+uint32_t JSValue::toUInt32SlowCase(ExecState* exec, bool& ok) const
+{
+    return JSC::toUInt32SlowCase(toNumber(exec), ok);
+}
+
+float JSValue::toFloat(ExecState* exec) const
+{
+    return static_cast<float>(toNumber(exec));
+}
+
+} // namespace JSC