webkitgtk-2.16.5HEADwebkitgtk-2.16.5master

1 files changed, 72 insertions, 0 deletions

diff --git a/Source/JavaScriptCore/runtime/StackFrame.h b/Source/JavaScriptCore/runtime/StackFrame.h
new file mode 100644
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+++ b/Source/JavaScriptCore/runtime/StackFrame.h
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+/*
+ * Copyright (C) 2016 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.
+ */
+
+#pragma once
+
+#include "Strong.h"
+#include <limits.h>
+
+namespace JSC {
+
+class CodeBlock;
+class JSObject;
+
+class StackFrame {
+public:
+    StackFrame(VM& vm, JSCell* callee)
+        : m_callee(vm, callee)
+    { }
+
+    StackFrame(VM& vm, JSCell* callee, CodeBlock* codeBlock, unsigned bytecodeOffset)
+        : m_callee(vm, callee)
+        , m_codeBlock(vm, codeBlock)
+        , m_bytecodeOffset(bytecodeOffset)
+    { }
+
+    bool hasLineAndColumnInfo() const { return !!m_codeBlock; }
+    
+    void computeLineAndColumn(unsigned& line, unsigned& column) const;
+    String functionName(VM&) const;
+    intptr_t sourceID() const;
+    String sourceURL() const;
+    String toString(VM&) const;
+
+    bool hasBytecodeOffset() const { return m_bytecodeOffset != UINT_MAX; }
+    unsigned bytecodeOffset()
+    {
+        ASSERT(m_bytecodeOffset != UINT_MAX);
+        return m_bytecodeOffset;
+    }
+
+
+private:
+    Strong<JSCell> m_callee { };
+    Strong<CodeBlock> m_codeBlock { };
+    unsigned m_bytecodeOffset { UINT_MAX };
+    
+};
+
+} // namespace JSC
+