https://git.ruby-lang.org/ruby.git/commit/?id=fa05697e48

From fa05697e4832fbd67a4f91b9bb362471902faab3 Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@r...>
Date: Tue, 14 Sep 2021 16:36:39 +0900
Subject: Use `%printer` directive for Bison 3.8

---
 parse.y | 74 ++++++++++++++++++++++++++---------------------------------------
 1 file changed, 29 insertions(+), 45 deletions(-)

diff --git a/parse.y b/parse.y
index 88ae901..6184112 100644
--- a/parse.y
+++ b/parse.y
@@ -88,7 +88,6 @@ struct lex_context { https://github.com/ruby/ruby/blob/trunk/parse.y#L88
 #define YYCALLOC(nelem, size)	rb_parser_calloc(p, (nelem), (size))
 #define YYFREE(ptr)		rb_parser_free(p, (ptr))
 #define YYFPRINTF		rb_parser_printf
-#define YYPRINT(out, tok, val)	parser_token_value_print(p, (tok), &(val))
 #define YY_LOCATION_PRINT(File, loc) \
      rb_parser_printf(p, "%d.%d-%d.%d", \
 		      (loc).beg_pos.lineno, (loc).beg_pos.column,\
@@ -653,7 +652,6 @@ RUBY_SYMBOL_EXPORT_END https://github.com/ruby/ruby/blob/trunk/parse.y#L652
 
 static void error_duplicate_pattern_variable(struct parser_params *p, ID id, const YYLTYPE *loc);
 static void error_duplicate_pattern_key(struct parser_params *p, ID id, const YYLTYPE *loc);
-static void parser_token_value_print(struct parser_params *p, enum yytokentype type, const YYSTYPE *valp);
 #ifndef RIPPER
 static ID formal_argument(struct parser_params*, ID);
 #else
@@ -1083,6 +1081,35 @@ static int looking_at_eol_p(struct parser_params *p); https://github.com/ruby/ruby/blob/trunk/parse.y#L1081
 %expect 0
 %define api.pure
 %define parse.error verbose
+%printer {
+#ifndef RIPPER
+    rb_parser_printf(p, "%"PRIsVALUE, rb_id2str($$));
+#else
+    rb_parser_printf(p, "%"PRIsVALUE, RNODE($$)->nd_rval);
+#endif
+} tIDENTIFIER tFID tGVAR tIVAR tCONSTANT tCVAR tLABEL tOP_ASGN
+%printer {
+#ifndef RIPPER
+    rb_parser_printf(p, "%+"PRIsVALUE, $$->nd_lit);
+#else
+    rb_parser_printf(p, "%+"PRIsVALUE, get_value($$));
+#endif
+} tINTEGER tFLOAT tRATIONAL tIMAGINARY tSTRING_CONTENT tCHAR
+%printer {
+#ifndef RIPPER
+    rb_parser_printf(p, "$%ld", $$->nd_nth);
+#else
+    rb_parser_printf(p, "%"PRIsVALUE, $$);
+#endif
+} tNTH_REF
+%printer {
+#ifndef RIPPER
+    rb_parser_printf(p, "$%c", (int)$$->nd_nth);
+#else
+    rb_parser_printf(p, "%"PRIsVALUE, $$);
+#endif
+} tBACK_REF
+
 %lex-param {struct parser_params *p}
 %parse-param {struct parser_params *p}
 %initial-action
@@ -10779,49 +10806,6 @@ rb_parser_set_location(struct parser_params *p, YYLTYPE *yylloc) https://github.com/ruby/ruby/blob/trunk/parse.y#L10806
 }
 #endif /* !RIPPER */
 
-static void
-parser_token_value_print(struct parser_params *p, enum yytokentype type, const YYSTYPE *valp)
-{
-    VALUE v;
-
-    switch (type) {
-      case tIDENTIFIER: case tFID: case tGVAR: case tIVAR:
-      case tCONSTANT: case tCVAR: case tLABEL: case tOP_ASGN:
-#ifndef RIPPER
-	v = rb_id2str(valp->id);
-#else
-	v = valp->node->nd_rval;
-#endif
-	rb_parser_printf(p, "%"PRIsVALUE, v);
-	break;
-      case tINTEGER: case tFLOAT: case tRATIONAL: case tIMAGINARY:
-      case tSTRING_CONTENT: case tCHAR:
-#ifndef RIPPER
-	v = valp->node->nd_lit;
-#else
-	v = get_value(valp->val);
-#endif
-	rb_parser_printf(p, "%+"PRIsVALUE, v);
-	break;
-      case tNTH_REF:
-#ifndef RIPPER
-	rb_parser_printf(p, "$%ld", valp->node->nd_nth);
-#else
-	rb_parser_printf(p, "%"PRIsVALUE, valp->val);
-#endif
-	break;
-      case tBACK_REF:
-#ifndef RIPPER
-	rb_parser_printf(p, "$%c", (int)valp->node->nd_nth);
-#else
-	rb_parser_printf(p, "%"PRIsVALUE, valp->val);
-#endif
-	break;
-      default:
-	break;
-    }
-}
-
 static int
 assignable0(struct parser_params *p, ID id, const char **err)
 {
-- 
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