More generic system for installing targets under different names

[builder.git] / source / target.cpp

diff --git a/source/target.cpp b/source/target.cpp
index 481d2f4a68dd460a6f3c0a8222af58be349208c9..64e1115adbd7bdc43134c3ef185764f944a40848 100644 (file)
--- a/source/target.cpp
+++ b/source/target.cpp
@@ -1,47 +1,130 @@
+#include <msp/fs/stat.h>
+#include <msp/fs/utils.h>
+#include <msp/strings/format.h>
 #include "builder.h"
+#include "filetarget.h"
+#include "sourcepackage.h"
 #include "target.h"
+#include "task.h"
+#include "tool.h"
 
 using namespace std;
+using namespace Msp;
 
-Target *TargetRef::get_target()
+Target::Target(Builder &b, const string &n):
+       builder(b),
+       package(0),
+       component(0),
+       name(n),
+       tool(0),
+       state(INIT)
+{
+       builder.add_target(this);
+}
+
+void Target::add_dependency(Target &dep)
 {
-       if(!target)
-               target=builder.get_target(name);
-       return target;
+       if(&dep==this)
+               throw invalid_argument("Target::add_depend");
+       depends.push_back(&dep);
+       if(state>PREPARING)
+               dep.signal_bubble_rebuild.connect(sigc::mem_fun(this, &Target::check_rebuild));
 }
 
 Target *Target::get_buildable_target()
 {
-       if(rebuild && ready_for_build && !building)
-               return this;
+       if(!needs_rebuild())
+               return 0;
 
-       for(list<Target *>::iterator i=depends.begin(); i!=depends.end(); ++i)
+       bool self_ok = state!=BUILDING;
+       for(Dependencies::iterator i=depends.begin(); i!=depends.end(); ++i)
        {
-               Target *tgt=(*i)->get_buildable_target();
+               Target *tgt = (*i)->get_buildable_target();
                if(tgt)
                        return tgt;
+               else if((*i)->needs_rebuild())
+                       self_ok = false;
        }
 
+       if(self_ok)
+               return this;
+
        return 0;
 }
 
-void Target::add_depend(Target *dep)
+void Target::set_tool(const Tool &t)
 {
-       depends.push_back(dep);
-       dep->rdepends.push_back(this);
+       tool = &t;
 }
 
-Target::Target(Builder &b, const Package *p, const string &n):
-       builder(b),
-       package(p),
-       name(n),
-       building(false),
-       rebuild(false),
-       ready_for_build(false)
-{ }
+void Target::force_rebuild()
+{
+       if(!is_buildable())
+               throw logic_error("Target::force_rebuild");
+       mark_rebuild("Forced rebuild");
+}
+
+void Target::mark_rebuild(const string &reason)
+{
+       if(reason.empty())
+               throw invalid_argument("No reason given for rebuilding "+name);
+
+       state = REBUILD;
+       rebuild_reason = reason;
+
+       builder.get_logger().log("rebuild", format("Rebuilding %s: %s", name, reason));
+
+       signal_bubble_rebuild.emit();
+}
+
+void Target::prepare()
+{
+       if(state>PREPARING)
+               return;
+       if(state==PREPARING)
+       {
+               builder.problem((package ? package->get_name() : string()), "Dependency cycle detected at "+name);
+               return;
+       }
+
+       state = PREPARING;
+       find_dependencies();
+       if(tool)
+       {
+               if(FileTarget *tool_exe = tool->get_executable())
+                       add_dependency(*tool_exe);
+       }
+
+       for(Dependencies::iterator i=depends.begin(); i!=depends.end(); ++i)
+               (*i)->prepare();
+
+       check_rebuild();
+       if(state==PREPARING)
+               state = UPTODATE;
+
+       for(Dependencies::iterator i=depends.begin(); i!=depends.end(); ++i)
+               (*i)->signal_bubble_rebuild.connect(sigc::mem_fun(this, &Target::check_rebuild));
+}
+
+Task *Target::build()
+{
+       if(!tool)
+       {
+               // This special case is needed for VirtualTargets
+               state = UPTODATE;
+               return 0;
+       }
+
+       Task *task = tool->run(*this);
+       task->signal_finished.connect(sigc::mem_fun(this, &Target::build_finished));
+       state = BUILDING;
+
+       return task;
+}
 
-void Target::mark_rebuild(const std::string &reason)
+void Target::build_finished(bool success)
 {
-       rebuild=true;
-       rebuild_reason=reason;
+       state = UPTODATE;
+       if(success)
+               modified();
 }