From dcd9f0af23f9b580b044890452ecf1aef59bbb85 Mon Sep 17 00:00:00 2001
From: TimRudy <3942818+TimRudy@users.noreply.github.com>
Date: Wed, 24 Feb 2021 15:48:15 -0500
Subject: Extend "delay" expressions to handle pair and triplet, i.e. rise,
 fall and turn-off (#2566)

---
 frontends/verilog/verilog_parser.y | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

(limited to 'frontends')

diff --git a/frontends/verilog/verilog_parser.y b/frontends/verilog/verilog_parser.y
index 7fbd2aa27..89e686818 100644
--- a/frontends/verilog/verilog_parser.y
+++ b/frontends/verilog/verilog_parser.y
@@ -609,12 +609,17 @@ interface_body_stmt:
 	param_decl | localparam_decl | typedef_decl | defparam_decl | wire_decl | always_stmt | assign_stmt |
 	modport_stmt;
 
+mintypmax_expr:
+	expr { delete $1; } |
+	expr ':' expr ':' expr { delete $1; delete $3; delete $5; };
+
 non_opt_delay:
 	'#' TOK_ID { delete $2; } |
 	'#' TOK_CONSTVAL { delete $2; } |
 	'#' TOK_REALVAL { delete $2; } |
-	'#' '(' expr ')' { delete $3; } |
-	'#' '(' expr ':' expr ':' expr ')' { delete $3; delete $5; delete $7; };
+	'#' '(' mintypmax_expr ')' |
+	'#' '(' mintypmax_expr ',' mintypmax_expr ')' |
+	'#' '(' mintypmax_expr ',' mintypmax_expr ',' mintypmax_expr ')';
 
 delay:
 	non_opt_delay | %empty;
-- 
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