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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_SETTINGS_H_ |
| 6 #define TOOLS_GN_SETTINGS_H_ |
| 7 |
| 8 #include "base/files/file_path.h" |
| 9 #include "tools/gn/build_settings.h" |
| 10 #include "tools/gn/import_manager.h" |
| 11 #include "tools/gn/output_file.h" |
| 12 #include "tools/gn/scope.h" |
| 13 #include "tools/gn/source_dir.h" |
| 14 #include "tools/gn/toolchain.h" |
| 15 |
| 16 // Holds the settings for one toolchain invocation. There will be one |
| 17 // Settings object for each toolchain type, each referring to the same |
| 18 // BuildSettings object for shared stuff. |
| 19 // |
| 20 // The Settings object is const once it is constructed, which allows us to |
| 21 // use it from multiple threads during target generation without locking (which |
| 22 // is important, because it gets used a lot). |
| 23 // |
| 24 // The Toolchain object holds the set of stuff that is set by the toolchain |
| 25 // declaration, which obviously needs to be set later when we actually parse |
| 26 // the file with the toolchain declaration in it. |
| 27 class Settings { |
| 28 public: |
| 29 enum TargetOS { |
| 30 UNKNOWN, |
| 31 LINUX, |
| 32 MAC, |
| 33 WIN |
| 34 }; |
| 35 |
| 36 // Constructs a toolchain settings. The output_subdir_name is the name we |
| 37 // should use for the subdirectory in the build output directory for this |
| 38 // toolchain's outputs. It should have no slashes in it. The default |
| 39 // toolchain should use an empty string. |
| 40 Settings(const BuildSettings* build_settings, |
| 41 const Toolchain* toolchain, |
| 42 const std::string& output_subdir_name); |
| 43 ~Settings(); |
| 44 |
| 45 const BuildSettings* build_settings() const { return build_settings_; } |
| 46 |
| 47 // Danger: this must only be used for getting the toolchain label until the |
| 48 // toolchain has been resolved. Otherwise, it will be modified on an |
| 49 // arbitrary thread when the toolchain invocation is found. Generally, you |
| 50 // will only read this from the target generation where we know everything |
| 51 // has been resolved and won't change. |
| 52 const Toolchain* toolchain() const { return toolchain_; } |
| 53 |
| 54 bool IsMac() const { return target_os_ == MAC; } |
| 55 bool IsWin() const { return target_os_ == WIN; } |
| 56 |
| 57 TargetOS target_os() const { return target_os_; } |
| 58 void set_target_os(TargetOS t) { target_os_ = t; } |
| 59 |
| 60 const OutputFile& toolchain_output_subdir() const { |
| 61 return toolchain_output_subdir_; |
| 62 } |
| 63 const SourceDir& toolchain_output_dir() const { |
| 64 return toolchain_output_dir_; |
| 65 } |
| 66 |
| 67 // Directory for generated files. |
| 68 const SourceDir& toolchain_gen_dir() const { |
| 69 return toolchain_gen_dir_; |
| 70 } |
| 71 |
| 72 // The import manager caches the result of executing imported files in the |
| 73 // context of a given settings object. |
| 74 // |
| 75 // See the ItemTree getter in GlobalSettings for why this doesn't return a |
| 76 // const pointer. |
| 77 ImportManager& import_manager() const { return import_manager_; } |
| 78 |
| 79 const Scope* base_config() const { return &base_config_; } |
| 80 Scope* base_config() { return &base_config_; } |
| 81 |
| 82 private: |
| 83 const BuildSettings* build_settings_; |
| 84 |
| 85 const Toolchain* toolchain_; |
| 86 |
| 87 TargetOS target_os_; |
| 88 |
| 89 mutable ImportManager import_manager_; |
| 90 |
| 91 // The subdirectory inside the build output for this toolchain. For the |
| 92 // default toolchain, this will be empty (since the deafult toolchain's |
| 93 // output directory is the same as the build directory). When nonempty, this |
| 94 // is guaranteed to end in a slash. |
| 95 OutputFile toolchain_output_subdir_; |
| 96 |
| 97 // Full source file path to the toolchain output directory. |
| 98 SourceDir toolchain_output_dir_; |
| 99 |
| 100 SourceDir toolchain_gen_dir_; |
| 101 |
| 102 Scope base_config_; |
| 103 |
| 104 DISALLOW_COPY_AND_ASSIGN(Settings); |
| 105 }; |
| 106 |
| 107 #endif // TOOLS_GN_SETTINGS_H_ |
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