webkitgtk-2.16.5HEADwebkitgtk-2.16.5master

1 files changed, 66 insertions, 0 deletions

diff --git a/Source/JavaScriptCore/parser/ModuleScopeData.h b/Source/JavaScriptCore/parser/ModuleScopeData.h
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+++ b/Source/JavaScriptCore/parser/ModuleScopeData.h
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+/*
+ * Copyright (C) 2015 Apple Inc. All rights reserved.
+ * Copyright (C) 2016 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.
+ */
+
+#pragma once
+
+#include "Identifier.h"
+#include <wtf/RefPtr.h>
+
+namespace JSC {
+
+class ModuleScopeData : public RefCounted<ModuleScopeData> {
+WTF_MAKE_NONCOPYABLE(ModuleScopeData);
+WTF_MAKE_FAST_ALLOCATED;
+public:
+    typedef HashMap<RefPtr<UniquedStringImpl>, Vector<RefPtr<UniquedStringImpl>>, IdentifierRepHash, HashTraits<RefPtr<UniquedStringImpl>>> IdentifierAliasMap;
+
+    static Ref<ModuleScopeData> create() { return adoptRef(*new ModuleScopeData); }
+
+    const IdentifierAliasMap& exportedBindings() const { return m_exportedBindings; }
+
+    bool exportName(const Identifier& exportedName)
+    {
+        return m_exportedNames.add(exportedName.impl()).isNewEntry;
+    }
+
+    void exportBinding(const Identifier& localName, const Identifier& exportedName)
+    {
+        m_exportedBindings.add(localName.impl(), Vector<RefPtr<UniquedStringImpl>>()).iterator->value.append(exportedName.impl());
+    }
+
+    void exportBinding(const Identifier& localName)
+    {
+        exportBinding(localName, localName);
+    }
+
+private:
+    ModuleScopeData() = default;
+
+    IdentifierSet m_exportedNames { };
+    IdentifierAliasMap m_exportedBindings { };
+};
+
+} // namespace