Import Dart bindings as of Blink r188698. This merely copies the files over and does not attach any…

sky/engine/bindings-dart/core/dart/DartScriptWrappable.h

+/*
+ * Copyright (C) 2014 Google 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:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * 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.
+ *     * Neither the name of Google Inc. 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 THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
+ * OWNER 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 DartScriptWrappable_h
+#define DartScriptWrappable_h
+
+#include "bindings/common/ScriptWrappable.h"
+#include <dart_api.h>
+
+namespace blink {
+
+class DartWrapperInfo {
+public:
+    void* domData;
+    void* wrapper;
+};
+
+class DartMultiWrapperInfo {
+public:
+    Vector<void*> domDatas;
+    Vector<void*> wrappers;
+};
+
+void ScriptWrappable::setDartWrapper(void* domData, void* wrapper)
+{
+    ASSERT(domData);
+    if (LIKELY(m_dartWrapperInfo.isEmpty())) {
+        DartWrapperInfo* wrapperInfo = new DartWrapperInfo;
+        wrapperInfo->domData = domData;
+        wrapperInfo->wrapper = wrapper;
+        m_dartWrapperInfo = TaggedPointer(wrapperInfo);
+    } else if (m_dartWrapperInfo.isDartWrapperInfo()) {
+        DartWrapperInfo* wrapperInfo = m_dartWrapperInfo.dartWrapperInfo();
+        if (wrapperInfo->domData == domData) {
+            // Replace the current wrapper.
+            wrapperInfo->wrapper = wrapper;
+        } else {
+            // Inflate to a multiwrapper.
+            DartMultiWrapperInfo* multiWrapperInfo = new DartMultiWrapperInfo;
+            multiWrapperInfo->domDatas.append(wrapperInfo->domData);
+            multiWrapperInfo->wrappers.append(wrapperInfo->wrapper);
+            multiWrapperInfo->domDatas.append(domData);
+            multiWrapperInfo->wrappers.append(wrapper);
+            m_dartWrapperInfo = TaggedPointer(multiWrapperInfo);
+            delete wrapperInfo;
+        }
+    } else {
+        ASSERT(m_dartWrapperInfo.isDartMultiWrapperInfo());
+        DartMultiWrapperInfo* wrapperInfo = m_dartWrapperInfo.dartMultiWrapperInfo();
+        size_t len = wrapperInfo->domDatas.size();
+        for (size_t i = 0; i < len; i++) {
+            if (wrapperInfo->domDatas.at(i) == domData) {
+                // Replace the current wrapper.
+                wrapperInfo->wrappers[i] = wrapper;
+                return;
+            }
+        }
+        // Append wrapper for new isolate.
+        wrapperInfo->domDatas.append(domData);
+        wrapperInfo->wrappers.append(wrapper);
+    }
+}
+
+void* ScriptWrappable::getDartWrapper(void* domData) const
+{
+    ASSERT(domData);
+    if (m_dartWrapperInfo.isDartWrapperInfo()) {
+        DartWrapperInfo* wrapperInfo = m_dartWrapperInfo.dartWrapperInfo();
+        if (wrapperInfo->domData == domData) {
+            return wrapperInfo->wrapper;
+        }
+        return 0;
+    }
+    if (m_dartWrapperInfo.isDartMultiWrapperInfo()) {
+        DartMultiWrapperInfo* wrapperInfo = m_dartWrapperInfo.dartMultiWrapperInfo();
+        size_t len = wrapperInfo->domDatas.size();
+        for (size_t i = 0; i < len; ++i) {
+            if (wrapperInfo->domDatas[i] == domData) {
+                return wrapperInfo->wrappers[i];
+            }
+        }
+        return 0;
+    }
+    ASSERT(m_dartWrapperInfo.isWrapperTypeInfo() || m_dartWrapperInfo.isV8Wrapper());
+    return 0;
+}
+
+void ScriptWrappable::clearDartWrapper(void* domData)
+{
+    if (LIKELY(m_dartWrapperInfo.isDartWrapperInfo())) {
+        DartWrapperInfo* wrapperInfo = m_dartWrapperInfo.dartWrapperInfo();
+        ASSERT(domData == wrapperInfo->domData);
+        m_dartWrapperInfo = TaggedPointer();
+        delete wrapperInfo;
+    } else if (m_dartWrapperInfo.isDartMultiWrapperInfo()) {
+        // Remove.
+        DartMultiWrapperInfo* wrapperInfo = m_dartWrapperInfo.dartMultiWrapperInfo();
+        size_t len = wrapperInfo->domDatas.size();
+        for (size_t i = 0; i < len; i++) {
+            if (wrapperInfo->domDatas[i] == domData) {
+                wrapperInfo->domDatas.remove(i);
+                wrapperInfo->wrappers.remove(i);
+                if (len == 1) {
+                    m_dartWrapperInfo = TaggedPointer();
+                    delete wrapperInfo;
+                }
+                return;
+            }
+        }
+        // Could not find wrapper.
+        ASSERT_NOT_REACHED();
+    } else {
+        // No Dart wrappers.
+        ASSERT_NOT_REACHED();
+    }
+}
+
+} // namespace blink
+
+#endif // DartScriptWrappable_h