From 8ecc09653d70fe8df4fc9fcd7214ba85e6db9c9c Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Fri, 2 Sep 2022 10:29:15 +0200
Subject: Add ability to specify `in` rule substitution as key-value pairs

---
 libbuild2/in/rule.hxx | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'libbuild2/in/rule.hxx')

diff --git a/libbuild2/in/rule.hxx b/libbuild2/in/rule.hxx
index bd0d15a..369fd93 100644
--- a/libbuild2/in/rule.hxx
+++ b/libbuild2/in/rule.hxx
@@ -54,6 +54,7 @@ namespace build2
 
       // Customization hooks and helpers.
       //
+      using substitution_map = map<string, optional<string>>;
 
       // Perform prerequisite search.
       //
@@ -89,6 +90,7 @@ namespace build2
               action, const target&,
               const string& name,
               optional<uint64_t> flags,
+              const substitution_map*,
               const optional<string>& null) const;
 
       // Perform variable substitution. Return nullopt if it should be
@@ -100,6 +102,7 @@ namespace build2
                   const string& name,
                   optional<uint64_t> flags,
                   bool strict,
+                  const substitution_map*,
                   const optional<string>& null) const;
 
       // Call the above version and do any necessary depdb saving.
@@ -111,6 +114,7 @@ namespace build2
                   const string& name,
                   optional<uint64_t> flags,
                   bool strict,
+                  const substitution_map*,
                   const optional<string>& null) const;
 
       // Process a line of input from the specified position performing any
@@ -124,6 +128,7 @@ namespace build2
                const char* newline,
                char sym,
                bool strict,
+               const substitution_map*,
                const optional<string>& null) const;
 
       // Replace newlines in a multi-line value with the given newline
-- 
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