From 2186eed80b26e77419d70b4985f10249bf2d7062 Mon Sep 17 00:00:00 2001
From: Niko Matsakis <niko@alum.mit.edu>
Date: Sat, 13 Jun 2015 22:15:05 -0400
Subject: [PATCH] Code blocks need a `=>`

---
 src/parser/mod.rs  | 7 +++++--
 src/parser/test.rs | 5 +++++
 2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/src/parser/mod.rs b/src/parser/mod.rs
index f06d792..7ddba65 100644
--- a/src/parser/mod.rs
+++ b/src/parser/mod.rs
@@ -55,6 +55,9 @@ rusty_peg! {
                 action: a
             };
 
+        ACTION: String =
+            ("=>", <c:CODE_BLOCK>) => c;
+
         // Symbol items
 
         SYMBOL_ARG: SymbolArg =
@@ -177,9 +180,9 @@ rusty_peg! {
 
 // Custom symbols.
 
-struct ACTION;
+struct CODE_BLOCK;
 
-impl<'input> rusty_peg::Symbol<'input,Parser<'input>> for ACTION {
+impl<'input> rusty_peg::Symbol<'input,Parser<'input>> for CODE_BLOCK {
     type Output = String;
 
     fn pretty_print(&self) -> String {
diff --git a/src/parser/test.rs b/src/parser/test.rs
index 8ec0c1a..ec925e1 100644
--- a/src/parser/test.rs
+++ b/src/parser/test.rs
@@ -46,3 +46,8 @@ fn token_expr() {
     assert!(parse_grammar(r#"grammar Foo { token Expr where { "foo" => "bar"; } }"#).is_ok());
 }
 
+#[test]
+fn map() {
+    assert!(parse_grammar(r#"grammar Foo { Expr = <n:Alt+> => { { foo } }; }"#).is_ok());
+}
+