JavaScriptCore-521.tar.gz

[apple/javascriptcore.git] / runtime / Operations.h

diff --git a/runtime/Operations.h b/runtime/Operations.h
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+/*
+ *  Copyright (C) 1999-2000 Harri Porten (porten@kde.org)
+ *  Copyright (C) 2002, 2005, 2006, 2007, 2008, 2009 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.
+ *
+ */
+
+#ifndef Operations_h
+#define Operations_h
+
+#include "JSImmediate.h"
+#include "JSNumberCell.h"
+#include "JSString.h"
+
+namespace JSC {
+
+    // ECMA 11.9.3
+    inline bool JSValuePtr::equal(ExecState* exec, JSValuePtr v1, JSValuePtr v2)
+    {
+        if (JSImmediate::areBothImmediateIntegerNumbers(v1, v2))
+            return v1 == v2;
+
+        return equalSlowCase(exec, v1, v2);
+    }
+
+    ALWAYS_INLINE bool JSValuePtr::equalSlowCaseInline(ExecState* exec, JSValuePtr v1, JSValuePtr v2)
+    {
+        ASSERT(!JSImmediate::areBothImmediateIntegerNumbers(v1, v2));
+
+        do {
+            if (v1.isNumber() && v2.isNumber())
+                return v1.uncheckedGetNumber() == v2.uncheckedGetNumber();
+
+            bool s1 = v1.isString();
+            bool s2 = v2.isString();
+            if (s1 && s2)
+                return asString(v1)->value() == asString(v2)->value();
+
+            if (v1.isUndefinedOrNull()) {
+                if (v2.isUndefinedOrNull())
+                    return true;
+                if (JSImmediate::isImmediate(v2))
+                    return false;
+                return v2.asCell()->structure()->typeInfo().masqueradesAsUndefined();
+            }
+
+            if (v2.isUndefinedOrNull()) {
+                if (JSImmediate::isImmediate(v1))
+                    return false;
+                return v1.asCell()->structure()->typeInfo().masqueradesAsUndefined();
+            }
+
+            if (v1.isObject()) {
+                if (v2.isObject())
+                    return v1 == v2;
+                JSValuePtr p1 = v1.toPrimitive(exec);
+                if (exec->hadException())
+                    return false;
+                v1 = p1;
+                if (JSImmediate::areBothImmediateIntegerNumbers(v1, v2))
+                    return v1 == v2;
+                continue;
+            }
+
+            if (v2.isObject()) {
+                JSValuePtr p2 = v2.toPrimitive(exec);
+                if (exec->hadException())
+                    return false;
+                v2 = p2;
+                if (JSImmediate::areBothImmediateIntegerNumbers(v1, v2))
+                    return v1 == v2;
+                continue;
+            }
+
+            if (s1 || s2) {
+                double d1 = v1.toNumber(exec);
+                double d2 = v2.toNumber(exec);
+                return d1 == d2;
+            }
+
+            if (v1.isBoolean()) {
+                if (v2.isNumber())
+                    return static_cast<double>(v1.getBoolean()) == v2.uncheckedGetNumber();
+            } else if (v2.isBoolean()) {
+                if (v1.isNumber())
+                    return v1.uncheckedGetNumber() == static_cast<double>(v2.getBoolean());
+            }
+
+            return v1 == v2;
+        } while (true);
+    }
+
+    // ECMA 11.9.3
+    inline bool JSValuePtr::strictEqual(JSValuePtr v1, JSValuePtr v2)
+    {
+        if (JSImmediate::areBothImmediateIntegerNumbers(v1, v2))
+            return v1 == v2;
+
+        if (v1.isNumber() && v2.isNumber())
+            return v1.uncheckedGetNumber() == v2.uncheckedGetNumber();
+
+        if (JSImmediate::isEitherImmediate(v1, v2))
+            return v1 == v2;
+
+        return strictEqualSlowCase(v1, v2);
+    }
+
+    ALWAYS_INLINE bool JSValuePtr::strictEqualSlowCaseInline(JSValuePtr v1, JSValuePtr v2)
+    {
+        ASSERT(!JSImmediate::isEitherImmediate(v1, v2));
+
+        if (v1.asCell()->isString() && v2.asCell()->isString())
+            return asString(v1)->value() == asString(v2)->value();
+
+        return v1 == v2;
+    }
+
+    JSValuePtr throwOutOfMemoryError(ExecState*);
+
+}
+#endif