Initial checkin of gRPC to third_party/

third_party/grpc/src/cpp/util/byte_buffer.cc

 /*
- * Copyright (C) 2013 Google Inc. All rights reserved.
+ *
+ * Copyright 2015-2016, 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 V0CustomElementLifecycleCallbacks_h
-#define V0CustomElementLifecycleCallbacks_h
+#include <grpc++/support/byte_buffer.h>
+#include <grpc/byte_buffer_reader.h>
 
-#include "platform/heap/Handle.h"
-#include "wtf/text/AtomicString.h"
+namespace grpc {
 
-namespace blink {
+ByteBuffer::ByteBuffer(const Slice* slices, size_t nslices) {
+  // TODO(yangg) maybe expose some core API to simplify this
+  std::vector<gpr_slice> c_slices(nslices);
+  for (size_t i = 0; i < nslices; i++) {
+    c_slices[i] = slices[i].slice_;
+  }
+  buffer_ = grpc_raw_byte_buffer_create(c_slices.data(), nslices);
+}
 
-class Element;
+ByteBuffer::~ByteBuffer() {
+  if (buffer_) {
+    grpc_byte_buffer_destroy(buffer_);
+  }
+}
 
-class V0CustomElementLifecycleCallbacks : public GarbageCollectedFinalized<V0CustomElementLifecycleCallbacks> {
-public:
-    virtual ~V0CustomElementLifecycleCallbacks() { }
+void ByteBuffer::Clear() {
+  if (buffer_) {
+    grpc_byte_buffer_destroy(buffer_);
+    buffer_ = nullptr;
+  }
+}
 
-    enum CallbackType {
-        None                     = 0,
-        CreatedCallback          = 1 << 0,
-        AttachedCallback         = 1 << 1,
-        DetachedCallback         = 1 << 2,
-        AttributeChangedCallback = 1 << 3
-    };
+void ByteBuffer::Dump(std::vector<Slice>* slices) const {
+  slices->clear();
+  if (!buffer_) {
+    return;
+  }
+  grpc_byte_buffer_reader reader;
+  grpc_byte_buffer_reader_init(&reader, buffer_);
+  gpr_slice s;
+  while (grpc_byte_buffer_reader_next(&reader, &s)) {
+    slices->push_back(Slice(s, Slice::STEAL_REF));
+  }
+  grpc_byte_buffer_reader_destroy(&reader);
+}
 
-    bool hasCallback(CallbackType type) const { return m_callbackType & type; }
+size_t ByteBuffer::Length() const {
+  if (buffer_) {
+    return grpc_byte_buffer_length(buffer_);
+  } else {
+    return 0;
+  }
+}
 
-    virtual void created(Element*) = 0;
-    virtual void attached(Element*) = 0;
-    virtual void detached(Element*) = 0;
-    virtual void attributeChanged(Element*, const AtomicString& name, const AtomicString& oldValue, const AtomicString& newValue) = 0;
+ByteBuffer::ByteBuffer(const ByteBuffer& buf)
+    : buffer_(grpc_byte_buffer_copy(buf.buffer_)) {}
 
-    DEFINE_INLINE_VIRTUAL_TRACE() { }
+ByteBuffer& ByteBuffer::operator=(const ByteBuffer& buf) {
+  Clear();  // first remove existing data
+  if (buf.buffer_) {
+    buffer_ = grpc_byte_buffer_copy(buf.buffer_);  // then copy
+  }
+  return *this;
+}
 
-protected:
-    explicit V0CustomElementLifecycleCallbacks(CallbackType type) : m_callbackType(type) { }
-
-private:
-    CallbackType m_callbackType;
-};
-
-} // namespace blink
-
-#endif // V0CustomElementLifecycleCallbacks_h
+}  // namespace grpc