Introduce notion of build context

All non-const global state is now in class context and we can now have
multiple independent builds going on at the same time.

1 files changed, 3 insertions, 35 deletions

diff --git a/libbuild2/prerequisite.hxx b/libbuild2/prerequisite.hxx
index f79ce04..fe6d10a 100644
--- a/libbuild2/prerequisite.hxx
+++ b/libbuild2/prerequisite.hxx
@@ -8,6 +8,7 @@
 #include <libbuild2/types.hxx>
 #include <libbuild2/utility.hxx>
 
+#include <libbuild2/scope.hxx>
 #include <libbuild2/action.hxx>
 #include <libbuild2/variable.hxx>
 #include <libbuild2/target-key.hxx>
@@ -17,7 +18,6 @@
 
 namespace build2
 {
-  class scope;
   class target;
 
   // Light-weight (by being shallow-pointing) prerequisite key, similar
@@ -31,7 +31,7 @@ namespace build2
   class prerequisite_key
   {
   public:
-    typedef build2::scope scope_type;
+    using scope_type = build2::scope;
 
     const optional<project_name>& proj;
     target_key tk;                // The .dir and .out members can be relative.
@@ -117,7 +117,7 @@ namespace build2
           name (move (n)),
           ext (move (e)),
           scope (s),
-          vars (false /* global */) {}
+          vars (s.ctx, false /* global */) {}
 
     // Make a prerequisite from a target.
     //
@@ -192,38 +192,6 @@ namespace build2
   }
 
   using prerequisites = vector<prerequisite>;
-
-  // Helpers for dealing with the prerequisite inclusion/exclusion (the
-  // 'include' buildfile variable, see var_include in context.hxx).
-  //
-  // Note that the include(prerequisite_member) overload is also provided.
-  //
-  // @@ Maybe this filtering should be incorporated into *_prerequisites() and
-  // *_prerequisite_members() logic? Could make normal > adhoc > excluded and
-  // then pass the "threshold".
-  //
-  class include_type
-  {
-  public:
-    enum value {excluded, adhoc, normal};
-
-    include_type (value v): v_ (v) {}
-    include_type (bool  v): v_ (v ? normal : excluded) {}
-
-    operator         value () const {return v_;}
-    explicit operator bool () const {return v_ != excluded;}
-
-  private:
-    value v_;
-  };
-
-  include_type
-  include (action,
-           const target&,
-           const prerequisite&,
-           const target* = nullptr);
 }
 
-#include <libbuild2/prerequisite.ixx>
-
 #endif // LIBBUILD2_PREREQUISITE_HXX