1 files changed, 108 insertions, 0 deletions
diff --git a/Source/JavaScriptCore/parser/UnlinkedSourceCode.h b/Source/JavaScriptCore/parser/UnlinkedSourceCode.h
new file mode 100644
index 000000000..e68ce8838
--- /dev/null
+++ b/Source/JavaScriptCore/parser/UnlinkedSourceCode.h
@@ -0,0 +1,108 @@
+/*
+ * Copyright (C) 2008, 2013, 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.
+ * 3.  Neither the name of Apple Inc. ("Apple") nor the names of
+ *     its contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "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 OR ITS 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 "SourceProvider.h"
+#include <wtf/RefPtr.h>
+
+namespace JSC {
+
+    class UnlinkedSourceCode {
+    public:
+        UnlinkedSourceCode()
+            : m_provider(0)
+            , m_startOffset(0)
+            , m_endOffset(0)
+        {
+        }
+
+        UnlinkedSourceCode(WTF::HashTableDeletedValueType)
+            : m_provider(WTF::HashTableDeletedValue)
+        {
+        }
+
+        UnlinkedSourceCode(Ref<SourceProvider>&& provider)
+            : m_provider(WTFMove(provider))
+            , m_startOffset(0)
+            , m_endOffset(m_provider->source().length())
+        {
+        }
+
+        UnlinkedSourceCode(Ref<SourceProvider>&& provider, int startOffset, int endOffset)
+            : m_provider(WTFMove(provider))
+            , m_startOffset(startOffset)
+            , m_endOffset(endOffset)
+        {
+        }
+
+        UnlinkedSourceCode(RefPtr<SourceProvider>&& provider, int startOffset, int endOffset)
+            : m_provider(WTFMove(provider))
+            , m_startOffset(startOffset)
+            , m_endOffset(endOffset)
+        {
+        }
+
+        UnlinkedSourceCode(const UnlinkedSourceCode& other)
+            : m_provider(other.m_provider)
+            , m_startOffset(other.m_startOffset)
+            , m_endOffset(other.m_endOffset)
+        {
+        }
+
+        bool isHashTableDeletedValue() const { return m_provider.isHashTableDeletedValue(); }
+
+        unsigned hash() const
+        {
+            ASSERT(m_provider);
+            return m_provider->hash();
+        }
+
+        StringView view() const
+        {
+            if (!m_provider)
+                return StringView();
+            return m_provider->getRange(m_startOffset, m_endOffset);
+        }
+        
+        CString toUTF8() const;
+        
+        bool isNull() const { return !m_provider; }
+        int startOffset() const { return m_startOffset; }
+        int endOffset() const { return m_endOffset; }
+        int length() const { return m_endOffset - m_startOffset; }
+
+    protected:
+        // FIXME: Make it Ref<SourceProvidier>.
+        // https://bugs.webkit.org/show_bug.cgi?id=168325
+        RefPtr<SourceProvider> m_provider;
+        int m_startOffset;
+        int m_endOffset;
+    };
+
+} // namespace JSC