From 51666badaa58d1cc70a05b362dbf9fbef64a7296 Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Tue, 20 Oct 2020 15:16:28 +0200
Subject: Add operation callback for adhoc rule match and apply

---
 libbuild2/rule.hxx | 25 ++++++++++++-------------
 1 file changed, 12 insertions(+), 13 deletions(-)

(limited to 'libbuild2/rule.hxx')

diff --git a/libbuild2/rule.hxx b/libbuild2/rule.hxx
index ae9c865..fa61bc5 100644
--- a/libbuild2/rule.hxx
+++ b/libbuild2/rule.hxx
@@ -24,17 +24,17 @@ namespace build2
   //
   // Note: match() is only called once but may not be followed by apply().
   //
+  // The match_extra argument is used to pass additional information that is
+  // only needed by some rule implementations. It is also a way for us to
+  // later pass more information without breaking source compatibility.
+  //
+  struct match_extra
+  {
+  };
+
   class LIBBUILD2_SYMEXPORT rule
   {
   public:
-    // The match_extra argument is used to pass additional information that is
-    // only needed by some rule implementations. It is also a way for us to
-    // later pass more information without breaking source compatibility.
-    //
-    struct match_extra
-    {
-    };
-
     virtual bool
     match (action, target&, const string& hint, match_extra&) const = 0;
 
@@ -144,7 +144,7 @@ namespace build2
   //
   // Note: not exported.
   //
-  class adhoc_rule: public simple_rule
+  class adhoc_rule: public rule
   {
   public:
     location_value loc;     // Buildfile location of the recipe.
@@ -174,12 +174,11 @@ namespace build2
     // interface.
     //
     virtual bool
-    match (action, target&, const string&, optional<action> fallback) const;
+    match (action, target&, const string&, match_extra&,
+           optional<action> fallback) const;
 
     virtual bool
-    match (action, target&, const string&) const override;
-
-    using simple_rule::match; // To make Clang happy.
+    match (action, target&, const string&, match_extra&) const override;
 
     // Dump support.
     //
-- 
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