webkitgtk-2.10.2webkitgtk-2.10.2

1 files changed, 101 insertions, 0 deletions

diff --git a/Source/JavaScriptCore/bytecode/HandlerInfo.h b/Source/JavaScriptCore/bytecode/HandlerInfo.h
new file mode 100644
index 000000000..acdda08ed
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+++ b/Source/JavaScriptCore/bytecode/HandlerInfo.h
@@ -0,0 +1,101 @@
+/*
+ * Copyright (C) 2012 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
+ */
+
+#ifndef HandlerInfo_h
+#define HandlerInfo_h
+
+#include "CodeLocation.h"
+
+namespace JSC {
+
+enum class HandlerType {
+    Illegal = 0,
+    Catch = 1,
+    Finally = 2,
+    SynthesizedFinally = 3
+};
+
+struct HandlerInfoBase {
+    HandlerType type() const { return static_cast<HandlerType>(typeBits); }
+    void setType(HandlerType type) { typeBits = static_cast<uint32_t>(type); }
+
+    const char* typeName()
+    {
+        switch (type()) {
+        case HandlerType::Catch:
+            return "catch";
+        case HandlerType::Finally:
+            return "finally";
+        case HandlerType::SynthesizedFinally:
+            return "synthesized finally";
+        default:
+            ASSERT_NOT_REACHED();
+        }
+        return nullptr;
+    }
+
+    bool isCatchHandler() const { return type() == HandlerType::Catch; }
+
+    uint32_t start;
+    uint32_t end;
+    uint32_t target;
+    uint32_t typeBits : 2; // HandlerType
+};
+
+struct UnlinkedHandlerInfo : public HandlerInfoBase {
+    UnlinkedHandlerInfo(uint32_t start, uint32_t end, uint32_t target, HandlerType handlerType)
+    {
+        this->start = start;
+        this->end = end;
+        this->target = target;
+        setType(handlerType);
+        ASSERT(type() == handlerType);
+    }
+};
+
+struct HandlerInfo : public HandlerInfoBase {
+    void initialize(const UnlinkedHandlerInfo& unlinkedInfo)
+    {
+        start = unlinkedInfo.start;
+        end = unlinkedInfo.end;
+        target = unlinkedInfo.target;
+        typeBits = unlinkedInfo.typeBits;
+    }
+
+#if ENABLE(JIT)
+    void initialize(const UnlinkedHandlerInfo& unlinkedInfo, CodeLocationLabel label)
+    {
+        initialize(unlinkedInfo);
+        nativeCode = label;
+    }
+
+    CodeLocationLabel nativeCode;
+#endif
+};
+
+} // namespace JSC
+
+#endif // HandlerInfo_h
+