| // 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 RUNTIME_PLATFORM_TEXT_BUFFER_H_ |
| #define RUNTIME_PLATFORM_TEXT_BUFFER_H_ |
| |
| #include "platform/allocation.h" |
| #include "platform/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 EscapeAndAddUTF16CodeUnit(uint16_t cu); |
| void EscapeAndAddCodeUnit(uint32_t cu); |
| void AddString(const char* s); |
| void AddEscapedString(const char* s); |
| void AddRaw(const uint8_t* buffer, intptr_t buffer_length); |
| |
| void Clear(); |
| |
| char* buf() { return buf_; } |
| intptr_t length() { return msg_len_; } |
| void set_length(intptr_t len) { |
| ASSERT(len >= 0); |
| ASSERT(len <= msg_len_); |
| msg_len_ = len; |
| } |
| |
| // Steal ownership of the buffer pointer. |
| // NOTE: TextBuffer is empty afterwards. |
| char* Steal(); |
| |
| private: |
| void EnsureCapacity(intptr_t len); |
| char* buf_; |
| intptr_t buf_size_; |
| intptr_t msg_len_; |
| }; |
| |
| class BufferFormatter : public ValueObject { |
| public: |
| BufferFormatter(char* buffer, intptr_t size) |
| : position_(0), buffer_(buffer), size_(size) {} |
| |
| void VPrint(const char* format, va_list args); |
| void Print(const char* format, ...) PRINTF_ATTRIBUTE(2, 3); |
| |
| private: |
| intptr_t position_; |
| char* buffer_; |
| const intptr_t size_; |
| |
| DISALLOW_COPY_AND_ASSIGN(BufferFormatter); |
| }; |
| |
| } // namespace dart |
| |
| #endif // RUNTIME_PLATFORM_TEXT_BUFFER_H_ |