-#ifndef TARGET_H_
-#define TARGET_H_
-
-#include <list>
-#include <map>
-#include <set>
-#include <string>
-#include <msp/time/timestamp.h>
-
-class Builder;
-class Package;
-class Task;
-class Tool;
-
-class Target;
-
-/**
-Targets make up the build graph. This class is a base for all target types and
-handles many common tasks. See also FileTarget and VirtualTarget.
-*/
-class Target
-{
-public:
- typedef std::list<Target *> Dependencies;
-
-protected:
- enum State
- {
- INIT,
- PREPARING,
- REBUILD,
- BUILDING,
- UPTODATE
- };
-
- Builder &builder;
- const Package *package;
- std::string name;
-
- const Tool *tool;
- State state;
- std::string rebuild_reason;
- std::string install_location;
-
- Dependencies depends;
- bool deps_ready;
-
- 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; }
-
- /**
- 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.
- */
- virtual Target *get_buildable_target();
-
- /**
- If this target is a proxy for another (such as Install or Symlink), return
- that target. Otherwise, return the target itself.
-
- Implementors should call the function recursively to find the final target.
- */
- virtual Target *get_real_target() { return this; }
-
- void set_tool(const Tool &);
- const Tool *get_tool() const { return tool; }
-
- bool is_buildable() const { return tool!=0; }
- bool needs_rebuild() const { return state>PREPARING && state<UPTODATE; }
- const std::string &get_rebuild_reason() const { return rebuild_reason; }
- bool is_installable() const { return !install_location.empty(); }
- const std::string &get_install_location() const { return install_location; }
- void add_depend(Target *);
- const Dependencies &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.
- */
- Task *build();
-protected:
- void mark_rebuild(const std::string &);
-
- /**
- Checks if the target needs to be rebuilt and why.
- */
- virtual void check_rebuild() = 0;
-
- /**
- Handler for the build_finished signal of Task.
- */
- virtual void build_finished(bool);
-};
-
-#endif