tools/gn/build_settings.h

   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_BUILD_SETTINGS_H_
   6 #define TOOLS_GN_BUILD_SETTINGS_H_
   7
   8 #include <map>
   9 #include <set>
  10
  11 #include "base/basictypes.h"
  12 #include "base/callback.h"
  13 #include "base/files/file_path.h"
  14 #include "base/memory/scoped_ptr.h"
  15 #include "tools/gn/args.h"
  16 #include "tools/gn/scope.h"
  17 #include "tools/gn/source_dir.h"
  18 #include "tools/gn/source_file.h"
  19
  20 class Item;
  21
  22 // Settings for one build, which is one toplevel output directory. There
  23 // may be multiple Settings objects that refer to this, one for each toolchain.
  24 class BuildSettings {
  25  public:
  26   typedef base::Callback<void(scoped_ptr<Item>)> ItemDefinedCallback;
  27   typedef base::Callback<void(const std::string&)> PrintCallback;
  28
  29   BuildSettings();
  30   BuildSettings(const BuildSettings& other);
  31   ~BuildSettings();
  32
  33   // Absolute path of the source root on the local system. Everything is
  34   // relative to this. Does not end in a [back]slash.
  35   const base::FilePath& root_path() const { return root_path_; }
  36   const std::string& root_path_utf8() const { return root_path_utf8_; }
  37   void SetRootPath(const base::FilePath& r);
  38
  39   // When nonempty, specifies a parallel directory higherarchy in which to
  40   // search for buildfiles if they're not found in the root higherarchy. This
  41   // allows us to keep buildfiles in a separate tree during development.
  42   const base::FilePath& secondary_source_path() const {
  43     return secondary_source_path_;
  44   }
  45   void SetSecondarySourcePath(const SourceDir& d);
  46
  47   // Path of the python executable to run scripts with.
  48   base::FilePath python_path() const { return python_path_; }
  49   void set_python_path(const base::FilePath& p) { python_path_ = p; }
  50
  51   const SourceFile& build_config_file() const { return build_config_file_; }
  52   void set_build_config_file(const SourceFile& f) { build_config_file_ = f; }
  53
  54   // The build directory is the root of all output files. The default toolchain
  55   // files go into here, and non-default toolchains will have separate
  56   // toolchain-specific root directories inside this.
  57   const SourceDir& build_dir() const { return build_dir_; }
  58   void SetBuildDir(const SourceDir& dir);
  59
  60   // The build args are normally specified on the command-line.
  61   Args& build_args() { return build_args_; }
  62   const Args& build_args() const { return build_args_; }
  63
  64   // Returns the full absolute OS path cooresponding to the given file in the
  65   // root source tree.
  66   base::FilePath GetFullPath(const SourceFile& file) const;
  67   base::FilePath GetFullPath(const SourceDir& dir) const;
  68
  69   // Returns the absolute OS path inside the secondary source path. Will return
  70   // an empty FilePath if the secondary source path is empty. When loading a
  71   // buildfile, the GetFullPath should always be consulted first.
  72   base::FilePath GetFullPathSecondary(const SourceFile& file) const;
  73   base::FilePath GetFullPathSecondary(const SourceDir& dir) const;
  74
  75   // Called when an item is defined from a background thread.
  76   void ItemDefined(scoped_ptr<Item> item) const;
  77   void set_item_defined_callback(ItemDefinedCallback cb) {
  78     item_defined_callback_ = cb;
  79   }
  80
  81   // Defines a callback that will be used to override the behavior of the
  82   // print function. This is used in tests to collect print output. If the
  83   // callback is is_null() (the default) the output will be printed to the
  84   // console.
  85   const PrintCallback& print_callback() const { return print_callback_; }
  86   void set_print_callback(const PrintCallback& cb) { print_callback_ = cb; }
  87
  88   // A list of files that can call exec_script(). If the returned pointer is
  89   // null, exec_script may be called from anywhere.
  90   const std::set<SourceFile>* exec_script_whitelist() const {
  91     return exec_script_whitelist_.get();
  92   }
  93   void set_exec_script_whitelist(scoped_ptr<std::set<SourceFile>> list) {
  94     exec_script_whitelist_ = list.Pass();
  95   }
  96
  97   // When set (the default), code should perform normal validation of inputs
  98   // and structures, like undefined or possibly incorrectly used things. For
  99   // some interrogation commands, we don't care about this and actually want
 100   // to allow the user to check the structure of the build to solve their
 101   // problem, and these checks are undesirable.
 102   bool check_for_bad_items() const {
 103     return check_for_bad_items_;
 104   }
 105   void set_check_for_bad_items(bool c) {
 106     check_for_bad_items_ = c;
 107   }
 108
 109  private:
 110   base::FilePath root_path_;
 111   std::string root_path_utf8_;
 112   base::FilePath secondary_source_path_;
 113   base::FilePath python_path_;
 114
 115   SourceFile build_config_file_;
 116   SourceDir build_dir_;
 117   Args build_args_;
 118
 119   ItemDefinedCallback item_defined_callback_;
 120   PrintCallback print_callback_;
 121
 122   scoped_ptr<std::set<SourceFile>> exec_script_whitelist_;
 123
 124   bool check_for_bad_items_;
 125
 126   BuildSettings& operator=(const BuildSettings& other);  // Disallow.
 127 };
 128
 129 #endif  // TOOLS_GN_BUILD_SETTINGS_H_