Add support for generated test input/output

1 files changed, 18 insertions, 0 deletions

diff --git a/build/algorithm b/build/algorithm
index d01614c..3b09d9c 100644
--- a/build/algorithm
+++ b/build/algorithm
@@ -6,6 +6,7 @@
 #define BUILD_ALGORITHM
 
 #include <string>
+#include <utility> // pair
 
 #include <build/types>
 #include <build/target>
@@ -68,6 +69,14 @@ namespace build
   void
   match (action, target&);
 
+  // Match a "delegate rule" from withing another rules' apply()
+  // function. Return recipe and recipe action (if any). Note
+  // that unlike match(), this call doesn't increment the
+  // dependents count. See also execute_delegate().
+  //
+  std::pair<recipe, action>
+  match_delegate (action, target&);
+
   // The standard prerequisite search and match implementations. They call
   // search_and_match_*() versions below passing non-empty directory for
   // the clean operation.
@@ -116,6 +125,15 @@ namespace build
   target_state
   execute (action, target&);
 
+  // Execute the recipe obtained with match_delegate(). Note that
+  // the target's state is neither checked nor updated by this
+  // function. In other words, the appropriate usage is to call
+  // this function from another recipe and to factor the obtained
+  // state into the one returned.
+  //
+  target_state
+  execute_delegate (const recipe&, action, target&);
+
   // A special version of the above that should be used for "direct"
   // and "now" execution, that is, side-stepping the normal target-
   // prerequisite relationship (so no dependents count is decremented)