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1 // Copyright (c) 2013 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef TOOLS_GN_SCOPE_H_ | 5 #ifndef TOOLS_GN_SCOPE_H_ |
6 #define TOOLS_GN_SCOPE_H_ | 6 #define TOOLS_GN_SCOPE_H_ |
7 | 7 |
8 #include <map> | 8 #include <map> |
9 #include <memory> | 9 #include <memory> |
10 #include <set> | 10 #include <set> |
11 #include <utility> | 11 #include <utility> |
| 12 #include <vector> |
12 | 13 |
13 #include "base/containers/hash_tables.h" | 14 #include "base/containers/hash_tables.h" |
14 #include "base/macros.h" | 15 #include "base/macros.h" |
15 #include "base/memory/ref_counted.h" | 16 #include "base/memory/ref_counted.h" |
16 #include "base/memory/scoped_vector.h" | |
17 #include "tools/gn/err.h" | 17 #include "tools/gn/err.h" |
18 #include "tools/gn/input_file.h" | 18 #include "tools/gn/input_file.h" |
19 #include "tools/gn/pattern.h" | 19 #include "tools/gn/pattern.h" |
20 #include "tools/gn/source_dir.h" | 20 #include "tools/gn/source_dir.h" |
21 #include "tools/gn/value.h" | 21 #include "tools/gn/value.h" |
22 | 22 |
23 class Item; | 23 class Item; |
24 class ParseNode; | 24 class ParseNode; |
25 class Settings; | 25 class Settings; |
26 class Template; | 26 class Template; |
27 | 27 |
28 // Scope for the script execution. | 28 // Scope for the script execution. |
29 // | 29 // |
30 // Scopes are nested. Writing goes into the toplevel scope, reading checks | 30 // Scopes are nested. Writing goes into the toplevel scope, reading checks |
31 // values resursively down the stack until a match is found or there are no | 31 // values resursively down the stack until a match is found or there are no |
32 // more containing scopes. | 32 // more containing scopes. |
33 // | 33 // |
34 // A containing scope can be const or non-const. The const containing scope is | 34 // A containing scope can be const or non-const. The const containing scope is |
35 // used primarily to refer to the master build config which is shared across | 35 // used primarily to refer to the master build config which is shared across |
36 // many invocations. A const containing scope, however, prevents us from | 36 // many invocations. A const containing scope, however, prevents us from |
37 // marking variables "used" which prevents us from issuing errors on unused | 37 // marking variables "used" which prevents us from issuing errors on unused |
38 // variables. So you should use a non-const containing scope whenever possible. | 38 // variables. So you should use a non-const containing scope whenever possible. |
39 class Scope { | 39 class Scope { |
40 public: | 40 public: |
41 typedef base::hash_map<base::StringPiece, Value, base::StringPieceHash> | 41 typedef base::hash_map<base::StringPiece, Value, base::StringPieceHash> |
42 KeyValueMap; | 42 KeyValueMap; |
43 // Holds an owning list of Items. | 43 // Holds an owning list of Items. |
44 typedef ScopedVector<Item> ItemVector; | 44 typedef std::vector<std::unique_ptr<Item>> ItemVector; |
45 | 45 |
46 // A flag to indicate whether a function should recurse into nested scopes, | 46 // A flag to indicate whether a function should recurse into nested scopes, |
47 // or only operate on the current scope. | 47 // or only operate on the current scope. |
48 enum SearchNested { | 48 enum SearchNested { |
49 SEARCH_NESTED, | 49 SEARCH_NESTED, |
50 SEARCH_CURRENT | 50 SEARCH_CURRENT |
51 }; | 51 }; |
52 | 52 |
53 // Allows code to provide values for built-in variables. This class will | 53 // Allows code to provide values for built-in variables. This class will |
54 // automatically register itself on construction and deregister itself on | 54 // automatically register itself on construction and deregister itself on |
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383 ProviderSet programmatic_providers_; | 383 ProviderSet programmatic_providers_; |
384 | 384 |
385 SourceDir source_dir_; | 385 SourceDir source_dir_; |
386 | 386 |
387 InputFileSet input_files_; | 387 InputFileSet input_files_; |
388 | 388 |
389 DISALLOW_COPY_AND_ASSIGN(Scope); | 389 DISALLOW_COPY_AND_ASSIGN(Scope); |
390 }; | 390 }; |
391 | 391 |
392 #endif // TOOLS_GN_SCOPE_H_ | 392 #endif // TOOLS_GN_SCOPE_H_ |
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