From 9fb791e9fad6c63fc1dac49f4d05ae63b8a3db9b Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Tue, 5 Jan 2016 11:55:15 +0200
Subject: Rename build directory/namespace to build2

---
 build2/bin/rule.cxx | 145 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 145 insertions(+)
 create mode 100644 build2/bin/rule.cxx

(limited to 'build2/bin/rule.cxx')

diff --git a/build2/bin/rule.cxx b/build2/bin/rule.cxx
new file mode 100644
index 0000000..9d93b0a
--- /dev/null
+++ b/build2/bin/rule.cxx
@@ -0,0 +1,145 @@
+// file      : build2/bin/rule.cxx -*- C++ -*-
+// copyright : Copyright (c) 2014-2015 Code Synthesis Ltd
+// license   : MIT; see accompanying LICENSE file
+
+#include <build2/bin/rule>
+
+#include <build2/scope>
+#include <build2/target>
+#include <build2/algorithm>
+#include <build2/diagnostics>
+
+#include <build2/bin/target>
+
+using namespace std;
+
+namespace build2
+{
+  namespace bin
+  {
+    // obj
+    //
+    match_result obj_rule::
+    match (action a, target& t, const std::string&) const
+    {
+      fail << diag_doing (a, t) << " target group" <<
+        info << "explicitly select either obja{} or objso{} member";
+
+      return nullptr;
+    }
+
+    recipe obj_rule::
+    apply (action, target&, const match_result&) const {return empty_recipe;}
+
+    // lib
+    //
+    // The whole logic is pretty much as if we had our two group
+    // members as our prerequisites.
+    //
+    match_result lib_rule::
+    match (action a, target& xt, const std::string&) const
+    {
+      lib& t (static_cast<lib&> (xt));
+
+      // @@ We have to re-query it on each match_only()!
+
+      // Get the library type to build. If not set for a target, this
+      // should be configured at the project scope by init_lib().
+      //
+      const string& type (as<string> (*t["bin.lib"]));
+
+      bool ar (type == "static" || type == "both");
+      bool so (type == "shared" || type == "both");
+
+      if (!ar && !so)
+        fail << "unknown library type: " << type <<
+          info << "'static', 'shared', or 'both' expected";
+
+      // Search and pre-match the members. The pre-match here is part
+      // of the "library meta-information protocol" that could be used
+      // by the module that actually builds the members. The idea is
+      // that pre-matching members may populate our prerequisite_targets
+      // with prerequisite libraries from which others can extract the
+      // meta-information about the library, such as the options to use
+      // when linking it, etc.
+      //
+      if (ar)
+      {
+        if (t.a == nullptr)
+          t.a = &search<liba> (t.dir, t.name, t.ext, nullptr);
+
+        match_only (a, *t.a);
+      }
+
+      if (so)
+      {
+        if (t.so == nullptr)
+          t.so = &search<libso> (t.dir, t.name, t.ext, nullptr);
+
+        match_only (a, *t.so);
+      }
+
+      match_result mr (t, &type);
+
+      // If there is an outer operation, indicate that we match
+      // unconditionally so that we don't override ourselves.
+      //
+      if (a.outer_operation () != 0)
+        mr.recipe_action = action (a.meta_operation (), a.operation ());
+
+      return mr;
+    }
+
+    recipe lib_rule::
+    apply (action a, target& xt, const match_result& mr) const
+    {
+      lib& t (static_cast<lib&> (xt));
+
+      const string& type (*static_cast<const string*> (mr.cpvalue));
+
+      bool ar (type == "static" || type == "both");
+      bool so (type == "shared" || type == "both");
+
+      // Now we do full match.
+      //
+      if (ar)
+        build2::match (a, *t.a);
+
+      if (so)
+        build2::match (a, *t.so);
+
+      return &perform;
+    }
+
+    target_state lib_rule::
+    perform (action a, target& xt)
+    {
+      lib& t (static_cast<lib&> (xt));
+
+      //@@ Not cool we have to do this again. Looks like we need
+      //   some kind of a cache vs resolved pointer, like in
+      //   prerequisite vs prerequisite_target.
+      //
+      //
+      const string& type (as<string> (*t["bin.lib"]));
+      bool ar (type == "static" || type == "both");
+      bool so (type == "shared" || type == "both");
+
+      target* m1 (ar ? t.a : nullptr);
+      target* m2 (so ? t.so : nullptr);
+
+      if (current_mode == execution_mode::last)
+        swap (m1, m2);
+
+      target_state r (target_state::unchanged);
+
+      if (m1 != nullptr)
+        r |= execute (a, *m1);
+
+      if (m2 != nullptr)
+        r |= execute (a, *m2);
+
+      return r;
+    }
+  }
+}
-- 
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