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| 1 // Copyright (c) 2013 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_GN_ERR_H_ | |
| 6 #define TOOLS_GN_ERR_H_ | |
| 7 | |
| 8 #include <string> | |
| 9 #include <vector> | |
| 10 | |
| 11 #include "tools/gn/location.h" | |
| 12 #include "tools/gn/token.h" | |
| 13 | |
| 14 class ParseNode; | |
| 15 class Value; | |
| 16 | |
| 17 // Result of doing some operation. Check has_error() to see if an error | |
| 18 // occurred. | |
| 19 // | |
| 20 // An error has a location and a message. Below that, is some optional help | |
| 21 // text to go with the annotation of the location. | |
| 22 // | |
| 23 // An error can also have sub-errors which are additionally printed out | |
| 24 // below. They can provide additional context. | |
| 25 class Err { | |
| 26 public: | |
| 27 typedef std::vector<LocationRange> RangeList; | |
| 28 | |
| 29 // Indicates no error. | |
| 30 Err(); | |
| 31 | |
| 32 // Error at a single point. | |
| 33 Err(const Location& location, | |
| 34 const std::string& msg, | |
| 35 const std::string& help = std::string()); | |
| 36 | |
| 37 // Error at a given range. | |
| 38 Err(const LocationRange& range, | |
| 39 const std::string& msg, | |
| 40 const std::string& help = std::string()); | |
| 41 | |
| 42 // Error at a given token. | |
| 43 Err(const Token& token, | |
| 44 const std::string& msg, | |
| 45 const std::string& help_text = std::string()); | |
| 46 | |
| 47 // Error at a given node. | |
| 48 Err(const ParseNode* node, | |
| 49 const std::string& msg, | |
| 50 const std::string& help_text = std::string()); | |
| 51 | |
| 52 // Error at a given value. | |
| 53 Err(const Value& value, | |
| 54 const std::string msg, | |
| 55 const std::string& help_text = std::string()); | |
| 56 | |
| 57 ~Err(); | |
| 58 | |
| 59 bool has_error() const { return has_error_; } | |
| 60 const Location& location() const { return location_; } | |
| 61 const std::string& message() const { return message_; } | |
| 62 const std::string& help_text() const { return help_text_; } | |
| 63 | |
| 64 void AppendRange(const LocationRange& range) { ranges_.push_back(range); } | |
| 65 const RangeList& ranges() const { return ranges_; } | |
| 66 | |
| 67 void AppendSubErr(const Err& err); | |
| 68 | |
| 69 void PrintToStdout() const; | |
| 70 | |
| 71 private: | |
| 72 void InternalPrintToStdout(bool is_sub_err) const; | |
| 73 | |
| 74 bool has_error_; | |
| 75 Location location_; | |
| 76 | |
| 77 std::vector<LocationRange> ranges_; | |
| 78 | |
| 79 std::string message_; | |
| 80 std::string help_text_; | |
| 81 | |
| 82 std::vector<Err> sub_errs_; | |
| 83 }; | |
| 84 | |
| 85 #endif // TOOLS_GN_ERR_H_ | |
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Chromium Code Reviews
Issue 21084010:
Revert 214254 "Add initial prototype for the GN meta-buildsystem." (Closed)
Base URL: svn://svn.chromium.org/chrome/