- Remove the legacy debug protocol.

runtime/platform/text_buffer.h

+// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+#ifndef PLATFORM_TEXT_BUFFER_H_
+#define PLATFORM_TEXT_BUFFER_H_
+
+#include "vm/allocation.h"
+#include "vm/globals.h"
+
+namespace dart {
+
+
+// TextBuffer maintains a dynamic character buffer with a printf-style way to
+// append text.
+class TextBuffer : ValueObject {
+ public:
+  explicit TextBuffer(intptr_t buf_size);
+  ~TextBuffer();
+
+  intptr_t Printf(const char* format, ...) PRINTF_ATTRIBUTE(2, 3);
+  void AddChar(char ch);
+  void EscapeAndAddCodeUnit(uint32_t cu);
+  void AddString(const char* s);
+  void AddEscapedString(const char* s);
+
+  void Clear();
+
+  char* buf() { return buf_; }
+  intptr_t length() { return msg_len_; }
+
+  // Steal ownership of the buffer pointer.
+  // NOTE: TextBuffer is empty afterwards.
+  const char* Steal();
+
+ private:
+  void EnsureCapacity(intptr_t len);
+  char* buf_;
+  intptr_t buf_size_;
+  intptr_t msg_len_;
+};
+
+}  // namespace dart
+
+#endif  // PLATFORM_TEXT_BUFFER_H_