OLD | NEW |
(Empty) | |
| 1 // Copyright 2014 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 #ifndef TOOLS_BLINK_GC_PLUGIN_JSON_WRITER_H_ |
| 6 #define TOOLS_BLINK_GC_PLUGIN_JSON_WRITER_H_ |
| 7 |
| 8 #include "llvm/Support/raw_ostream.h" |
| 9 |
| 10 // Helper to write information for the points-to graph. |
| 11 class JsonWriter { |
| 12 public: |
| 13 static JsonWriter* from(std::unique_ptr<llvm::raw_ostream> os) { |
| 14 return os ? new JsonWriter(std::move(os)) : 0; |
| 15 } |
| 16 void OpenList() { |
| 17 Separator(); |
| 18 *os_ << "["; |
| 19 state_.push(false); |
| 20 } |
| 21 void OpenList(const std::string key) { |
| 22 Write(key); |
| 23 *os_ << ":"; |
| 24 OpenList(); |
| 25 } |
| 26 void CloseList() { |
| 27 *os_ << "]"; |
| 28 state_.pop(); |
| 29 } |
| 30 void OpenObject() { |
| 31 Separator(); |
| 32 *os_ << "{"; |
| 33 state_.push(false); |
| 34 } |
| 35 void CloseObject() { |
| 36 *os_ << "}\n"; |
| 37 state_.pop(); |
| 38 } |
| 39 void Write(const size_t val) { |
| 40 Separator(); |
| 41 *os_ << val; |
| 42 } |
| 43 void Write(const std::string val) { |
| 44 Separator(); |
| 45 *os_ << "\"" << val << "\""; |
| 46 } |
| 47 void Write(const std::string key, const size_t val) { |
| 48 Separator(); |
| 49 *os_ << "\"" << key << "\":" << val; |
| 50 } |
| 51 void Write(const std::string key, const std::string val) { |
| 52 Separator(); |
| 53 *os_ << "\"" << key << "\":\"" << val << "\""; |
| 54 } |
| 55 private: |
| 56 JsonWriter(std::unique_ptr<llvm::raw_ostream> os) : os_(std::move(os)) {} |
| 57 void Separator() { |
| 58 if (state_.empty()) |
| 59 return; |
| 60 if (state_.top()) { |
| 61 *os_ << ","; |
| 62 return; |
| 63 } |
| 64 state_.top() = true; |
| 65 } |
| 66 std::unique_ptr<llvm::raw_ostream> os_; |
| 67 std::stack<bool> state_; |
| 68 }; |
| 69 |
| 70 #endif // TOOLS_BLINK_GC_PLUGIN_JSON_WRITER_H_ |
OLD | NEW |