From 6b3e75edf034ebcbd048a24c283c7bcf7b1da019 Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Tue, 25 May 2021 11:19:04 +0200
Subject: Add support for regex-based target type/pattern specific variables

This is in addition to the already supported path-based target type/pattern
specific variables. For example:

hxx{*}:     x = y  # path-based
hxx{~/.*/}: x = y  # regex-based
---
 libbuild2/types.hxx | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'libbuild2/types.hxx')

diff --git a/libbuild2/types.hxx b/libbuild2/types.hxx
index dd82ef1..8dfda6e 100644
--- a/libbuild2/types.hxx
+++ b/libbuild2/types.hxx
@@ -16,6 +16,7 @@
 #include <map>
 #include <array>
 #include <tuple>
+#include <regex>
 #include <vector>
 #include <string>
 #include <memory>           // unique_ptr, shared_ptr
@@ -44,6 +45,7 @@
 
 #include <libbutl/path.mxx>
 #include <libbutl/path-map.mxx>
+#include <libbutl/regex.mxx>
 #include <libbutl/sha256.mxx>
 #include <libbutl/process.mxx>
 #include <libbutl/fdstream.mxx>
@@ -105,6 +107,14 @@ namespace build2
   using std::endl;
   using std::streamsize; // C++'s ssize_t.
 
+  // Regex.
+  //
+  // Note that <libbutl/regex.mxx> includes an ostream insertion operator for
+  // regex_error which prints cleaned up message, if any.
+  //
+  using std::regex;
+  using std::regex_error;
+
   // Concurrency.
   //
   using std::atomic;
-- 
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