-/* $Id$
-
-This file is part of builder
-Copyright © 2006-2009 Mikko Rasa, Mikkosoft Productions
-Distributed under the LGPL
-*/
-
-#ifndef TARGET_H_
-#define TARGET_H_
-
-#include <list>
-#include <map>
-#include <set>
-#include <string>
-#include <msp/time/timestamp.h>
-
-class Action;
-class Builder;
-class Package;
-
-class Target;
-typedef std::list<Target *> TargetList;
-
-/**
-Targets make up the build graph. This class is a base for all target types and
-handles many common tasks. Most targets are associated with a file.
-*/
-class Target
-{
-protected:
- Builder &builder;
- const Package *package;
- std::string name;
- Msp::Time::TimeStamp mtime;
-
- bool buildable;
- bool building;
- bool rebuild;
- std::string rebuild_reason;
-
- TargetList depends;
- TargetList rdepends;
- bool deps_ready;
-
- bool preparing;
- bool prepared;
-
- Target(Builder &, const Package *, const std::string &);
-public:
- virtual ~Target() { }
-
- virtual const char *get_type() const = 0;
- const std::string &get_name() const { return name; }
- const Package *get_package() const { return package; }
- const Msp::Time::TimeStamp &get_mtime() const { return mtime; }
-
- /**
- Tries to locate a target that will help getting this target built. If all
- dependencies are up-to-date, returns this target. If there are no targets
- ready to be built (maybe because they are being built right now), returns 0.
- */
- Target *get_buildable_target();
-
- bool is_buildable() const { return buildable; }
- bool get_rebuild() const { return rebuild; }
- const std::string &get_rebuild_reason() const { return rebuild_reason; }
- void add_depend(Target *);
- const TargetList &get_depends() const { return depends; }
- bool get_depends_ready() const { return deps_ready; }
-
- /**
- Finds dependencies for the target. When all dependencies have been found,
- the function should set deps_ready to true.
- */
- virtual void find_depends() { deps_ready = true; }
-
- /**
- Prepares the target by recursively preparing dependencies, then checking
- whether rebuilding is needed. A flag is used to prevent unnecessary
- executions.
- */
- virtual void prepare();
-
- /**
- Starts building the target. Returns the Action used for building.
- */
- Action *build();
-
- /**
- Changes the mtime of the target to the current time.
- */
- void touch();
-protected:
- void mark_rebuild(const std::string &);
-
- /**
- Checks if the target needs to be rebuilt and why.
- */
- virtual void check_rebuild();
-
- /**
- Creates and returns an Action suitable for building this target.
- */
- virtual Action *create_action() =0;
-
- /**
- Handler for the build_done signal of Action.
- */
- virtual void build_done();
-};
-
-typedef std::map<std::string, Target *> TargetMap;
-
-#endif