From fc33fd86b7727365caab44c05a90d5b52209131b Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <eelco.dolstra@logicblox.com>
Date: Mon, 18 Nov 2013 20:14:54 +0100
Subject: Add a symbol __curPos that expands to the current source location

I.e. an attribute set { file = <string>; line = <int>; column = <int>; }.
---
 src/libexpr/nixexpr.cc | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'src/libexpr/nixexpr.cc')

diff --git a/src/libexpr/nixexpr.cc b/src/libexpr/nixexpr.cc
index d52f7eadbbe3..f4b4295e290c 100644
--- a/src/libexpr/nixexpr.cc
+++ b/src/libexpr/nixexpr.cc
@@ -130,6 +130,11 @@ void ExprConcatStrings::show(std::ostream & str)
     }
 }
 
+void ExprPos::show(std::ostream & str)
+{
+    str << "__curPos";
+}
+
 
 std::ostream & operator << (std::ostream & str, const Pos & pos)
 {
@@ -315,6 +320,10 @@ void ExprConcatStrings::bindVars(const StaticEnv & env)
         (*i)->bindVars(env);
 }
 
+void ExprPos::bindVars(const StaticEnv & env)
+{
+}
+
 
 /* Storing function names. */
 
-- 
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