122 lines
4.1 KiB
C++
122 lines
4.1 KiB
C++
// Copyright (c) 2013 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef TOOLS_GN_SETTINGS_H_
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#define TOOLS_GN_SETTINGS_H_
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#include "base/files/file_path.h"
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#include "tools/gn/build_settings.h"
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#include "tools/gn/import_manager.h"
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#include "tools/gn/output_file.h"
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#include "tools/gn/scope.h"
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#include "tools/gn/source_dir.h"
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#include "tools/gn/toolchain.h"
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// Holds the settings for one toolchain invocation. There will be one
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// Settings object for each toolchain type, each referring to the same
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// BuildSettings object for shared stuff.
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//
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// The Settings object is const once it is constructed, which allows us to
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// use it from multiple threads during target generation without locking (which
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// is important, because it gets used a lot).
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//
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// The Toolchain object holds the set of stuff that is set by the toolchain
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// declaration, which obviously needs to be set later when we actually parse
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// the file with the toolchain declaration in it.
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class Settings {
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public:
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enum TargetOS {
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UNKNOWN,
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LINUX,
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MAC,
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WIN
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};
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// Constructs a toolchain settings. The output_subdir_name is the name we
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// should use for the subdirectory in the build output directory for this
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// toolchain's outputs. It should have no slashes in it. The default
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// toolchain should use an empty string.
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Settings(const BuildSettings* build_settings,
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const Toolchain* toolchain,
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const std::string& output_subdir_name);
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~Settings();
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const BuildSettings* build_settings() const { return build_settings_; }
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// Danger: this must only be used for getting the toolchain label until the
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// toolchain has been resolved. Otherwise, it will be modified on an
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// arbitrary thread when the toolchain invocation is found. Generally, you
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// will only read this from the target generation where we know everything
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// has been resolved and won't change.
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const Toolchain* toolchain() const { return toolchain_; }
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bool IsMac() const { return target_os_ == MAC; }
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bool IsLinux() const { return target_os_ == LINUX; }
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bool IsWin() const { return target_os_ == WIN; }
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TargetOS target_os() const { return target_os_; }
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void set_target_os(TargetOS t) { target_os_ = t; }
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const OutputFile& toolchain_output_subdir() const {
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return toolchain_output_subdir_;
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}
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const SourceDir& toolchain_output_dir() const {
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return toolchain_output_dir_;
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}
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// Directory for generated files.
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const SourceDir& toolchain_gen_dir() const {
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return toolchain_gen_dir_;
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}
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// The import manager caches the result of executing imported files in the
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// context of a given settings object.
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//
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// See the ItemTree getter in GlobalSettings for why this doesn't return a
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// const pointer.
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ImportManager& import_manager() const { return import_manager_; }
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const Scope* base_config() const { return &base_config_; }
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Scope* base_config() { return &base_config_; }
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// Set to true when every target we encounter should be generated. False
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// means that only targets that have a dependency from (directly or
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// indirectly) some magic root node are actually generated. See the comments
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// on ItemTree for more.
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bool greedy_target_generation() const {
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return greedy_target_generation_;
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}
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void set_greedy_target_generation(bool gtg) {
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greedy_target_generation_ = gtg;
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}
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private:
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const BuildSettings* build_settings_;
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const Toolchain* toolchain_;
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TargetOS target_os_;
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mutable ImportManager import_manager_;
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// The subdirectory inside the build output for this toolchain. For the
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// default toolchain, this will be empty (since the deafult toolchain's
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// output directory is the same as the build directory). When nonempty, this
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// is guaranteed to end in a slash.
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OutputFile toolchain_output_subdir_;
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// Full source file path to the toolchain output directory.
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SourceDir toolchain_output_dir_;
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SourceDir toolchain_gen_dir_;
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Scope base_config_;
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bool greedy_target_generation_;
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DISALLOW_COPY_AND_ASSIGN(Settings);
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};
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#endif // TOOLS_GN_SETTINGS_H_
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