Imported QtWebKit TP3 (git b57bc6801f1876c3220d5a4bfea33d620d477443)

Change-Id: I3b1d8a2808782c9f34d50240000e20cb38d3680f
Reviewed-by: Konstantin Tokarev <annulen@yandex.ru>

1 files changed, 98 insertions, 0 deletions

diff --git a/Source/JavaScriptCore/parser/SourceCodeKey.h b/Source/JavaScriptCore/parser/SourceCodeKey.h
new file mode 100644
index 000000000..09f8f91e2
--- /dev/null
+++ b/Source/JavaScriptCore/parser/SourceCodeKey.h
@@ -0,0 +1,98 @@
+/*
+ * Copyright (C) 2012 Apple Inc. All Rights Reserved.
+ * Copyright (C) 2015 Yusuke Suzuki <utatane.tea@gmail.com>
+ *
+ * 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 SourceCodeKey_h
+#define SourceCodeKey_h
+
+#include "ParserModes.h"
+#include "SourceCode.h"
+#include <wtf/HashTraits.h>
+
+namespace JSC {
+
+class SourceCodeKey {
+public:
+    enum CodeType { EvalType, ProgramType, FunctionType, ModuleType };
+
+    SourceCodeKey()
+    {
+    }
+
+    SourceCodeKey(const SourceCode& sourceCode, const String& name, CodeType codeType, JSParserBuiltinMode builtinMode, JSParserStrictMode strictMode, ThisTDZMode thisTDZMode = ThisTDZMode::CheckIfNeeded)
+        : m_sourceCode(sourceCode)
+        , m_name(name)
+        , m_flags((static_cast<unsigned>(codeType) << 3) | (static_cast<unsigned>(builtinMode) << 2) | (static_cast<unsigned>(strictMode) << 1) | static_cast<unsigned>(thisTDZMode))
+        , m_hash(sourceCode.hash())
+    {
+    }
+
+    SourceCodeKey(WTF::HashTableDeletedValueType)
+        : m_sourceCode(WTF::HashTableDeletedValue)
+    {
+    }
+
+    bool isHashTableDeletedValue() const { return m_sourceCode.isHashTableDeletedValue(); }
+
+    unsigned hash() const { return m_hash; }
+
+    size_t length() const { return m_sourceCode.length(); }
+
+    bool isNull() const { return m_sourceCode.isNull(); }
+
+    // To save memory, we compute our string on demand. It's expected that source
+    // providers cache their strings to make this efficient.
+    StringView string() const { return m_sourceCode.view(); }
+
+    bool operator==(const SourceCodeKey& other) const
+    {
+        return m_hash == other.m_hash
+            && length() == other.length()
+            && m_flags == other.m_flags
+            && m_name == other.m_name
+            && string() == other.string();
+    }
+
+private:
+    SourceCode m_sourceCode;
+    String m_name;
+    unsigned m_flags;
+    unsigned m_hash;
+};
+
+struct SourceCodeKeyHash {
+    static unsigned hash(const SourceCodeKey& key) { return key.hash(); }
+    static bool equal(const SourceCodeKey& a, const SourceCodeKey& b) { return a == b; }
+    static const bool safeToCompareToEmptyOrDeleted = false;
+};
+
+struct SourceCodeKeyHashTraits : SimpleClassHashTraits<SourceCodeKey> {
+    static const bool hasIsEmptyValueFunction = true;
+    static bool isEmptyValue(const SourceCodeKey& sourceCodeKey) { return sourceCodeKey.isNull(); }
+};
+
+}
+
+#endif // SourceCodeKey_h