parse.y: lex_state trace by yydebug

* parse.y (trace_lex_state): trace lex_state changes if yydebug is
  set, and send the messages to rb_stdout.
* parse.y (rb_parser_printf): store YYPRINTF messages per lines
  so that lex_state traces do not mix.
* tool/ytab.sed: add parser argument to yy_stack_print too.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@53095 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 18 insertions, 2 deletions

diff --git a/tool/ytab.sed b/tool/ytab.sed
index 46317db284..d8fb70016c 100755
--- a/tool/ytab.sed
+++ b/tool/ytab.sed
@@ -14,7 +14,7 @@ a\
 /^yydestruct.*yymsg/,/#endif/{
   /^yydestruct/{
     /parser/!{
-      h
+      H
       s/^/ruby_parser_&/
       s/)$/, parser)/
       /\*/s/parser)$/struct parser_params *&/
@@ -22,7 +22,7 @@ a\
   }
   /^#endif/{
     x
-    /^./{
+    /yydestruct/{
       i\
     struct parser_params *parser;
       a\
@@ -31,6 +31,22 @@ a\
     x
   }
 }
+/^yy_stack_print/{
+  /parser/!{
+    H
+    s/)$/, parser)/
+    /\*/s/parser)$/struct parser_params *&/
+  }
+}
+/yy_stack_print.*;/{
+  x
+  /yy_stack_print/{
+    x
+    s/\(yy_stack_print *\)(\(.*\));/\1(\2, parser);/
+    x
+  }
+  x
+}
 s/^\([ 	]*\)\(yyerror[ 	]*([ 	]*parser,\)/\1parser_\2/
 s!^ *extern char \*getenv();!/* & */!
 s/^\(#.*\)".*\.tab\.c"/\1"parse.c"/