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// Copyright (c) 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef TOOLS_GN_ITEM_H_
#define TOOLS_GN_ITEM_H_
#include <set>
#include <string>
#include "tools/gn/label.h"
#include "tools/gn/source_file.h"
#include "tools/gn/visibility.h"
class Config;
class ParseNode;
class Pool;
class Settings;
class SourceFile;
class Target;
class Toolchain;
// A named item (target, config, etc.) that participates in the dependency
// graph.
class Item {
public:
Item(const Settings* settings,
const Label& label,
const std::set<SourceFile>& build_dependency_files = {});
virtual ~Item();
const Settings* settings() const { return settings_; }
// This is guaranteed to never change after construction so this can be
// accessed from any thread with no locking once the item is constructed.
const Label& label() const { return label_; }
const ParseNode* defined_from() const { return defined_from_; }
void set_defined_from(const ParseNode* df) { defined_from_ = df; }
Visibility& visibility() { return visibility_; }
const Visibility& visibility() const { return visibility_; }
// Manual RTTI.
virtual Config* AsConfig();
virtual const Config* AsConfig() const;
virtual Pool* AsPool();
virtual const Pool* AsPool() const;
virtual Target* AsTarget();
virtual const Target* AsTarget() const;
virtual Toolchain* AsToolchain();
virtual const Toolchain* AsToolchain() const;
// Returns a name like "target" or "config" for the type of item this is, to
// be used in logging and error messages.
std::string GetItemTypeName() const;
// Returns the set of build files that may affect this item, please refer to
// Scope for how this is determined.
const std::set<SourceFile>& build_dependency_files() const {
return build_dependency_files_;
}
std::set<SourceFile>& build_dependency_files() {
return build_dependency_files_;
}
// Called when this item is resolved, meaning it and all of its dependents
// have no unresolved deps. Returns true on success. Sets the error and
// returns false on failure.
virtual bool OnResolved(Err* err);
private:
const Settings* settings_;
Label label_;
std::set<SourceFile> build_dependency_files_;
const ParseNode* defined_from_;
Visibility visibility_;
};
#endif // TOOLS_GN_ITEM_H_
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