From 977d07a3ae47ef204665d1eda2d642e5064724f3 Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Mon, 24 Jun 2019 12:01:19 +0200
Subject: Split build system into library and driver

---
 libbuild2/functions-string.cxx | 43 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 43 insertions(+)
 create mode 100644 libbuild2/functions-string.cxx

(limited to 'libbuild2/functions-string.cxx')

diff --git a/libbuild2/functions-string.cxx b/libbuild2/functions-string.cxx
new file mode 100644
index 0000000..22860cb
--- /dev/null
+++ b/libbuild2/functions-string.cxx
@@ -0,0 +1,43 @@
+// file      : libbuild2/functions-string.cxx -*- C++ -*-
+// copyright : Copyright (c) 2014-2019 Code Synthesis Ltd
+// license   : MIT; see accompanying LICENSE file
+
+#include <libbuild2/function.hxx>
+#include <libbuild2/variable.hxx>
+
+using namespace std;
+
+namespace build2
+{
+  void
+  string_functions ()
+  {
+    function_family f ("string");
+
+    f["string"] = [](string s)  {return s;};
+
+    // @@ Shouldn't it concatenate elements into the single string?
+    // @@ Doesn't seem to be used so far. Can consider removing.
+    //
+    // f["string"] = [](strings v) {return v;};
+
+    // String-specific overloads from builtins.
+    //
+    function_family b ("builtin");
+
+    b[".concat"] = [](string l, string r) {l += r; return l;};
+
+    b[".concat"] = [](string l, names ur)
+    {
+      l += convert<string> (move (ur));
+      return l;
+    };
+
+    b[".concat"] = [](names ul, string r)
+    {
+      string l (convert<string> (move (ul)));
+      l += r;
+      return l;
+    };
+  }
+}
-- 
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