Add Symlink target and associated action

[builder.git] / source / target.h

diff --git a/source/target.h b/source/target.h
index 5deb2344b3c00ed72d6253ad0d294d502ba25a89..edfd60cebe7f8f655a5c8011512d05b80b481d9b 100644 (file)
--- a/source/target.h
+++ b/source/target.h
@@ -1,7 +1,7 @@
 /* $Id$
 
 This file is part of builder
-Copyright © 2006-2009  Mikko Rasa, Mikkosoft Productions
+Copyright © 2006-2010  Mikko Rasa, Mikkosoft Productions
 Distributed under the LGPL
 */
 
@@ -10,6 +10,7 @@ Distributed under the LGPL
 
 #include <list>
 #include <map>
+#include <set>
 #include <string>
 #include <msp/time/timestamp.h>
 
@@ -22,7 +23,7 @@ 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.
+handles many common tasks.  See also FileTarget and VirtualTarget.
 */
 class Target
 {
@@ -30,7 +31,6 @@ protected:
        Builder &builder;
        const Package *package;
        std::string name;
-       Msp::Time::TimeStamp mtime;
 
        bool buildable;
        bool building;
@@ -38,20 +38,18 @@ protected:
        std::string rebuild_reason;
 
        TargetList depends;
-       TargetList rdepends;
        bool deps_ready;
 
+       bool preparing;
        bool prepared;
-       bool counted;
 
        Target(Builder &, const Package *, const std::string &);
 public:
        virtual ~Target() { }
 
-       virtual const char *get_type() const=0;
+       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
@@ -60,7 +58,15 @@ public:
        */
        Target *get_buildable_target();
 
-       bool get_buildable() const { return buildable; }
+       /**
+       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; }
+
+       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 *);
@@ -71,7 +77,7 @@ public:
        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; }
+       virtual void find_depends() { deps_ready = true; }
 
        /**
        Prepares the target by recursively preparing dependencies, then checking
@@ -84,26 +90,13 @@ public:
        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();
+       virtual void check_rebuild() = 0;
 
        /**
        Creates and returns an Action suitable for building this target.
@@ -111,7 +104,7 @@ protected:
        virtual Action *create_action() =0;
 
        /**
-       Handles for the build_done signal of Action.
+       Handler for the build_done signal of Action.
        */
        virtual void build_done();
 };