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authorAlbert Magyar2019-11-04 12:34:13 -0800
committermergify[bot]2019-11-04 20:34:13 +0000
commit8f108c1aa8cac656da56b2505519db47080d5a26 (patch)
tree63bbe70175c9af57f08f7864ddfb3cb4298c9a8c /src/main
parent4c3c7e328e41f289ec37aee85a5d4d15c7b18189 (diff)
Add explicit EOF to top-level parser rule (#1217)
* Fixes #1154 * Tests that #1154 example produces SyntaxErrorsException * Generally helps catch trailing syntax errors * Performance-neutral relative to previous grammar * Recommended by antlr4 devs, can help performance in some cases * See antlr/antlr4#1540
Diffstat (limited to 'src/main')
-rw-r--r--src/main/antlr4/FIRRTL.g42
1 files changed, 1 insertions, 1 deletions
diff --git a/src/main/antlr4/FIRRTL.g4 b/src/main/antlr4/FIRRTL.g4
index 518cb698..0035423b 100644
--- a/src/main/antlr4/FIRRTL.g4
+++ b/src/main/antlr4/FIRRTL.g4
@@ -29,7 +29,7 @@ import firrtl.LexerHelper;
// Does there have to be at least one module?
circuit
- : 'circuit' id ':' info? INDENT module* DEDENT
+ : 'circuit' id ':' info? INDENT module* DEDENT EOF
;
module