refactor syntax error

* compile.c (append_compile_error): use rb_syntax_error_append.
* error.c (rb_syntax_error_append): append messages into a
  SyntaxError exception instance.
* parse.y (yycompile0): make new SyntaxError instance in main
  mode, otherwize error_buffer should be a SyntaxError if error
  has occurred.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@54650 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 5 insertions, 4 deletions

diff --git a/parse.y b/parse.y
index 2243f69765..56f4d837c5 100644
--- a/parse.y
+++ b/parse.y
@@ -5550,8 +5550,11 @@ yycompile0(VALUE arg)
     lex_lastline = lex_nextline = 0;
     if (parser->error_p) {
 	VALUE mesg = parser->error_buffer;
-	if (!mesg) mesg = rb_fstring_cstr("compile error");
-	rb_set_errinfo(rb_exc_new_str(rb_eSyntaxError, mesg));
+	if (!mesg) {
+	    mesg = rb_fstring_cstr("compile error");
+	    mesg = rb_exc_new_str(rb_eSyntaxError, mesg);
+	}
+	rb_set_errinfo(mesg);
 	return 0;
     }
     tree = ruby_eval_tree;
@@ -11074,8 +11077,6 @@ rb_parser_printf(struct parser_params *parser, const char *fmt, ...)
     }
 }
 
-extern VALUE rb_syntax_error_append(VALUE exc, VALUE file, int line, int column, rb_encoding *enc, const char *fmt, va_list args);
-
 static void
 parser_compile_error(struct parser_params *parser, const char *fmt, ...)
 {