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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_FILE_TEMPLATE_H_ |
| 6 #define TOOLS_GN_FILE_TEMPLATE_H_ |
| 7 |
| 8 #include "base/basictypes.h" |
| 9 #include "base/containers/stack_container.h" |
| 10 #include "tools/gn/err.h" |
| 11 #include "tools/gn/value.h" |
| 12 |
| 13 class ParseNode; |
| 14 |
| 15 class FileTemplate { |
| 16 public: |
| 17 struct Subrange { |
| 18 enum Type { |
| 19 LITERAL = 0, |
| 20 SOURCE, |
| 21 NAME_PART, |
| 22 NUM_TYPES // Must be last |
| 23 }; |
| 24 Subrange(Type t, const std::string& l = std::string()) |
| 25 : type(t), |
| 26 literal(l) { |
| 27 } |
| 28 |
| 29 Type type; |
| 30 |
| 31 // When type_ == LITERAL, this specifies the literal. |
| 32 std::string literal; |
| 33 }; |
| 34 |
| 35 // Constructs a template from the given value. On error, the err will be |
| 36 // set. In this case you should not use this object. |
| 37 FileTemplate(const Value& t, Err* err); |
| 38 FileTemplate(const std::vector<std::string>& t); |
| 39 ~FileTemplate(); |
| 40 |
| 41 // Applies this template to the given list of sources, appending all |
| 42 // results to the given dest list. The sources must be a list for the |
| 43 // one that takes a value as an input, otherwise the given error will be set. |
| 44 void Apply(const Value& sources, |
| 45 const ParseNode* origin, |
| 46 std::vector<Value>* dest, |
| 47 Err* err) const; |
| 48 void ApplyString(const std::string& input, |
| 49 std::vector<std::string>* output) const; |
| 50 |
| 51 // Known template types. |
| 52 static const char kSource[]; |
| 53 static const char kSourceNamePart[]; |
| 54 |
| 55 private: |
| 56 typedef base::StackVector<Subrange, 8> Template; |
| 57 typedef base::StackVector<Template, 8> TemplateVector; |
| 58 |
| 59 void ParseInput(const Value& value, Err* err); |
| 60 |
| 61 // Parses a template string and adds it to the templates_ list. |
| 62 void ParseOneTemplateString(const std::string& str); |
| 63 |
| 64 TemplateVector templates_; |
| 65 |
| 66 // The corresponding value is set to true if the given subrange type is |
| 67 // required. This allows us to precompute these types whem applying them |
| 68 // to a given source file. |
| 69 bool types_required_[Subrange::NUM_TYPES]; |
| 70 |
| 71 DISALLOW_COPY_AND_ASSIGN(FileTemplate); |
| 72 }; |
| 73 |
| 74 #endif // TOOLS_GN_FILE_TEMPLATE_H_ |
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