From: Siraaj Khandkar <siraaj@khandkar.net>
Date: Tue, 29 May 2018 15:00:15 +0000 (-0400)
Subject: Assign precedence and associativity to THEN
X-Git-Url: https://git.xandkar.net/?a=commitdiff_plain;h=7c9381cfa42670471ff857694bb56cde8f1e77c9;p=tiger.ml.git

Assign precedence and associativity to THEN

reduces shift/reduce conflicts from 25 to 12
---

diff --git a/tiger/src/lib/tiger/tiger_parser.mly b/tiger/src/lib/tiger/tiger_parser.mly
index 625632f..610ea48 100644
--- a/tiger/src/lib/tiger/tiger_parser.mly
+++ b/tiger/src/lib/tiger/tiger_parser.mly
@@ -49,6 +49,7 @@
 %token WHILE
 
 /* from lowest precedence */
+%left THEN
 %left ELSE
 %nonassoc ASSIGN
 %left OF DO