Long live Qt 4.5!

1 files changed, 137 insertions, 0 deletions

diff --git a/src/3rdparty/webkit/JavaScriptCore/runtime/Operations.h b/src/3rdparty/webkit/JavaScriptCore/runtime/Operations.h
new file mode 100644
index 0000000..f627c52
--- /dev/null
+++ b/src/3rdparty/webkit/JavaScriptCore/runtime/Operations.h
@@ -0,0 +1,137 @@
+/*
+ *  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
+  bool equal(ExecState*, JSValuePtr, JSValuePtr);
+  bool equalSlowCase(ExecState*, JSValuePtr, JSValuePtr);
+
+  ALWAYS_INLINE bool equalSlowCaseInline(ExecState* exec, JSValuePtr v1, JSValuePtr v2)
+  {
+      ASSERT(!JSImmediate::areBothImmediateNumbers(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::areBothImmediateNumbers(v1, v2))
+                  return v1 == v2;
+              continue;
+          }
+
+          if (v2->isObject()) {
+              JSValuePtr p2 = v2->toPrimitive(exec);
+              if (exec->hadException())
+                  return false;
+              v2 = p2;
+              if (JSImmediate::areBothImmediateNumbers(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);
+  }
+
+
+  bool strictEqual(JSValuePtr, JSValuePtr);
+  bool strictEqualSlowCase(JSValuePtr, JSValuePtr);
+
+  inline bool strictEqualSlowCaseInline(JSValuePtr v1, JSValuePtr v2)
+  {
+      ASSERT(!JSImmediate::areBothImmediate(v1, v2));
+      
+      if (JSImmediate::isEitherImmediate(v1, v2)) {
+          ASSERT(v1 == JSImmediate::zeroImmediate() || v2 == JSImmediate::zeroImmediate());
+          ASSERT(v1 != v2);
+
+          // The reason we can't just return false here is that 0 === -0,
+          // and while the former is an immediate number, the latter is not.
+          if (v1 == JSImmediate::zeroImmediate())
+              return asCell(v2)->isNumber() && asNumberCell(v2)->value() == 0;
+          return asCell(v1)->isNumber() && asNumberCell(v1)->value() == 0;
+      }
+      
+      if (asCell(v1)->isNumber()) {
+          return asCell(v2)->isNumber()
+              && asNumberCell(v1)->value() == asNumberCell(v2)->value();
+      }
+
+      if (asCell(v1)->isString()) {
+          return asCell(v2)->isString()
+              && asString(v1)->value() == asString(v2)->value();
+      }
+
+      return v1 == v2;
+  }
+
+  JSValuePtr throwOutOfMemoryError(ExecState*);
+}
+
+#endif