From 4c3b4f4dc10c380a101df75cb561e3f79f1a6abe Mon Sep 17 00:00:00 2001
From: jackkoenig
Date: Fri, 23 Sep 2016 13:44:57 -0700
Subject: Add RawString ExtModule parameter support

While unsafe, this supports Verilog parameter types.
Tests now require Verilator 3.884+ to pass.
---
 src/main/antlr4/FIRRTL.g4 | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

(limited to 'src/main/antlr4')

diff --git a/src/main/antlr4/FIRRTL.g4 b/src/main/antlr4/FIRRTL.g4
index f4d9d3f8..70716c94 100644
--- a/src/main/antlr4/FIRRTL.g4
+++ b/src/main/antlr4/FIRRTL.g4
@@ -97,6 +97,7 @@ parameter
   : 'parameter' id '=' IntLit NEWLINE
   | 'parameter' id '=' StringLit NEWLINE
   | 'parameter' id '=' DoubleLit NEWLINE
+  | 'parameter' id '=' RawString NEWLINE
   ;
 
 moduleBlock
@@ -321,7 +322,16 @@ HexDigit
   ;
 
 StringLit
-  : '"' ('\\"'|.)*? '"'
+  : '"' UnquotedString? '"'
+  ;
+
+RawString
+  : '\'' UnquotedString? '\''
+  ;
+
+fragment
+UnquotedString
+  : ('\\"'|~[\r\n])+?
   ;
 
 FileInfo
-- 
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