From: Marcelina Kościelnicka <mwk@0x04.net>
Date: Wed, 27 Jan 2021 23:31:50 +0000 (+0100)
Subject: ast: fix dump_vlog display of casex/casez
X-Git-Tag: working-ls180~100
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=a4c04d1b909285789cbb3b7f9d39e9020701f741;p=yosys.git

ast: fix dump_vlog display of casex/casez

The first child of AST_CASE is the case expression, it's subsequent
childrean that are AST_COND* and can be used to discriminate the type of
the case.
---

diff --git a/frontends/ast/ast.cc b/frontends/ast/ast.cc
index 1c0a8b34d..dc47420af 100644
--- a/frontends/ast/ast.cc
+++ b/frontends/ast/ast.cc
@@ -548,9 +548,9 @@ void AstNode::dumpVlog(FILE *f, std::string indent) const
 		break;
 
 	case AST_CASE:
-		if (!children.empty() && children[0]->type == AST_CONDX)
+		if (children.size() > 1 && children[1]->type == AST_CONDX)
 			fprintf(f, "%s" "casex (", indent.c_str());
-		else if (!children.empty() && children[0]->type == AST_CONDZ)
+		else if (children.size() > 1 && children[1]->type == AST_CONDZ)
 			fprintf(f, "%s" "casez (", indent.c_str());
 		else
 			fprintf(f, "%s" "case (", indent.c_str());