X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Ftarget.h;h=8a394f3717625787dbc1c123b7bd4f61319da8da;hb=e0c863681c8a5fad5918bb7730ecbc65fbdfbc64;hp=a47eb756f868cc0663939f7d255c6b31f3f15d8d;hpb=0b16c3de0f9dc01bd8a9708008f9435fe0252df1;p=builder.git

diff --git a/source/target.h b/source/target.h
index a47eb75..8a394f3 100644
--- a/source/target.h
+++ b/source/target.h
@@ -5,15 +5,15 @@
 #include <map>
 #include <set>
 #include <string>
+#include <sigc++/signal.h>
 #include <msp/time/timestamp.h>
 
 class Builder;
-class Package;
+class Component;
+class SourcePackage;
 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.
@@ -23,84 +23,88 @@ class Target
 public:
 	typedef std::list<Target *> Dependencies;
 
+protected:
+	enum State
+	{
+		INIT,
+		PREPARING,
+		REBUILD,
+		BUILDING,
+		UPTODATE
+	};
+
+public:
+	sigc::signal<void> signal_bubble_rebuild;
+
 protected:
 	Builder &builder;
-	const Package *package;
+	const SourcePackage *package;
+	const Component *component;
 	std::string name;
 
 	const Tool *tool;
-	bool buildable;
-	bool building;
-	bool rebuild;
+	State state;
 	std::string rebuild_reason;
 
 	Dependencies depends;
-	bool deps_ready;
-
-	bool preparing;
-	bool prepared;
 
-	Target(Builder &, const Package *, const std::string &);
+	Target(Builder &, 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 SourcePackage *get_package() const { return package; }
+	const Component *get_component() const { return component; }
 
-	/**
-	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.
-	*/
+	/** 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.
+	/** If this target is a proxy for another (such as Install), return that
+	target.  Otherwise, return the target itself.
 
-	Implementors should call the function recursively to find the final target.
-	*/
+	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 buildable; }
-	bool get_rebuild() const { return rebuild; }
+	/** Indicates if it's possible to build this target. */
+	bool is_buildable() const { return tool!=0; }
+
+	/** Indicates if this target needs rebuilding.  Only makes sense after the
+	target has been prepared. */
+	bool needs_rebuild() const { return state>PREPARING && state<UPTODATE; }
+
+	/** Returns the reason for rebuilding this target.  Only makes sense after
+	the target has been prepared. */
 	const std::string &get_rebuild_reason() const { return rebuild_reason; }
+
+	/** Forces rebuild of the target. */
+	void force_rebuild();
+
 	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.
-	*/
+
+	/** Finds dependencies for the target. */
+	virtual void find_depends() { }
+
+	/** Prepares the target by finding dependencies, recursively preparing them
+	and then checking whether rebuilding is needed. */
 	virtual void prepare();
 
-	/**
-	Starts building the target.  Returns the Action used for building.
-	*/
+	/** 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.
-	*/
+	/** Checks if the target needs to be rebuilt and why. */
 	virtual void check_rebuild() = 0;
 
-	/**
-	Handler for the build_finished signal of Task.
-	*/
+	/** Handler for Task::signal_finished. */
 	virtual void build_finished(bool);
 };