From: Nick Bowler <nbowler@draconx.ca>
Date: Thu, 20 Jul 2023 01:25:09 +0000 (-0400)
Subject: libcdecl: Combine tag/typedef identifier rules.
X-Git-Tag: v1.3~106
X-Git-Url: https://git.draconx.ca/gitweb/cdecl99.git/commitdiff_plain/a8753bb69c0455ae59fd258aad988e9613f76330

libcdecl: Combine tag/typedef identifier rules.

There are actually no conflicts to add an empty production alongside
the rule for "struct", "union" and "enum", which allows the subsequent
reductions for "tag identifier" and "[nothing] identifier" to be done
with just one rule.

This replaces a relatively large action from the eliminated rule with
a very simple one.
---

diff --git a/src/parse.y b/src/parse.y
index 1542c09..a993ea6 100644
--- a/src/parse.y
+++ b/src/parse.y
@@ -343,7 +343,7 @@ typespec_simple: T_VOID
 	| T_COMPLEX
 	| T_IMAGINARY
 
-typespec_tagged: T_STRUCT | T_UNION | T_ENUM
+typespec_tagged: T_STRUCT | T_UNION | T_ENUM | { $$ = CDECL_TYPE_IDENT; }
 
 qualifier_simple: T_CONST
 	| T_RESTRICT
@@ -365,10 +365,6 @@ typespec: typespec_noid | typespec_tagged T_IDENT {
 	ALLOC_STRUCT($$, struct cdecl_declspec,
 		.type  = $1,
 		.ident = $2);
-} | T_IDENT {
-	ALLOC_STRUCT($$, struct cdecl_declspec,
-		.type = CDECL_TYPE_IDENT,
-		.ident = $1);
 }
 
 declspec_noid: declspec_notype | typespec_noid