X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Ftarget.h;h=5deb2344b3c00ed72d6253ad0d294d502ba25a89;hb=2edc25f87590bd81808792c3c38cab5ae8b94eb3;hp=21135b03970aa96a7b0641e096b4cba6b513860a;hpb=4dc31cca056ea293d320928f61fef0558089d32d;p=builder.git

diff --git a/source/target.h b/source/target.h
index 21135b0..5deb234 100644
--- a/source/target.h
+++ b/source/target.h
@@ -1,50 +1,121 @@
+/* $Id$
+
+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 <string>
 #include <msp/time/timestamp.h>
 
+class Action;
 class Builder;
 class Package;
+
 class Target;
+typedef std::list<Target *> TargetList;
 
-class TargetRef
+/**
+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
 {
-public:
-	TargetRef(Builder &b, const std::string &n): builder(b), name(n) { }
-	Target *get_target();
-private:
+protected:
 	Builder &builder;
+	const Package *package;
 	std::string name;
-	Target *target;
-};
+	Msp::Time::TimeStamp mtime;
 
-class Target
-{
+	bool buildable;
+	bool building;
+	bool rebuild;
+	std::string rebuild_reason;
+
+	TargetList depends;
+	TargetList rdepends;
+	bool deps_ready;
+
+	bool prepared;
+	bool counted;
+
+	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   get_rebuild() const { return rebuild; }
+
+	bool get_buildable() const { return buildable; }
+	bool get_rebuild() const { return rebuild; }
 	const std::string &get_rebuild_reason() const { return rebuild_reason; }
-	virtual void find_depends()=0;
-	void   add_depend(Target *);
-	virtual const char *get_type() const=0;
-	virtual ~Target() { }
-protected:
-	Builder     &builder;
-	const Package *package;
-	std::string name;
-	bool        building;
-	bool        rebuild;
-	std::string rebuild_reason;
-	Msp::Time::TimeStamp mtime;
-	std::list<Target *> depends;
-	std::list<Target *> rdepends;
-	bool        ready_for_build;
+	void add_depend(Target *);
+	const TargetList &get_depends() const { return depends; }
+	bool get_depends_ready() const { return deps_ready; }
 
-	Target(Builder &, const Package *, const std::string &);
+	/**
+	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();
+
+	void reset_count() { counted=false; }
+
+	/**
+	Returns the number of targets that need to be rebuilt in order to get this
+	target up-to-date.
+	*/
+	virtual unsigned count_rebuild();
+
+	/**
+	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;
+
+	/**
+	Handles for the build_done signal of Action.
+	*/
+	virtual void build_done();
 };
 
+typedef std::map<std::string, Target *> TargetMap;
+
 #endif