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parse.y: highlight yyerror

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git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@61533 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2018-01-01 01:04:50 +00:00
parent da0c6035ad
commit d4764ef6e4
1 changed files with 35 additions and 15 deletions
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50
parse.y
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@ -5351,7 +5351,7 @@ parser_yyerror(struct parser_params *parser, const YYLTYPE *yylloc, const char *
{
#ifndef RIPPER
const int max_line_margin = 30;
const char *p, *pe, *pt;
const char *p, *pe, *pt, *pb;
const char *pre = "", *post = "", *pend;
const char *code = "", *caret = "", *newline = "";
const char *lim;
@ -5388,8 +5388,6 @@ parser_yyerror(struct parser_params *parser, const YYLTYPE *yylloc, const char *
len = pe - p;
if (len > 4) {
char *p2;
if (p > lex_pbeg) {
p = rb_enc_prev_char(lex_pbeg, p, pt, rb_enc_get(lex_lastline));
if (p > lex_pbeg) pre = "...";
@ -5398,17 +5396,42 @@ parser_yyerror(struct parser_params *parser, const YYLTYPE *yylloc, const char *
pe = rb_enc_prev_char(pt, pe, pend, rb_enc_get(lex_lastline));
if (pe < pend) post = "...";
}
}
pb = lex_pbeg;
if (ruby_sourceline == yylloc->first_loc.lineno) {
pb += yylloc->first_loc.column;
if (pb > pt) pb = pt;
}
if (pb < p) pb = p;
if (len <= 4 && yylloc->first_loc.lineno == yylloc->last_loc.lineno) {
compile_error(PARSER_ARG "%s", msg);
}
else if (!parser->error_buffer && rb_stderr_tty_p()) {
#define CSI_BEGIN "\033["
#define CSI_SGR "m"
compile_error(PARSER_ARG "%s\n"
CSI_BEGIN""CSI_SGR"%s" /* pre */
CSI_BEGIN"1"CSI_SGR"%.*s"
CSI_BEGIN"1;4"CSI_SGR"%.*s"
CSI_BEGIN";1"CSI_SGR"%.*s"
CSI_BEGIN""CSI_SGR"%s" /* post */,
msg, pre,
(int)(pb - p), p,
(int)(pt - pb), pb,
(int)(pe - pt), pt,
post);
}
else {
char *p2;
len = pe - p;
lim = pt < pend ? pt : pend;
i = (int)(lim - p);
buf = ALLOCA_N(char, i+2);
code = p;
caret = p2 = buf;
pe = (ruby_sourceline == yylloc->first_loc.lineno) ?
parser->tokp : lex_pbeg;
if (pe > lim) pe = lim;
if (p <= pe) {
while (p < pe) {
if (p <= pb) {
while (p < pb) {
*p2++ = *p++ == '\t' ? '\t' : ' ';
}
*p2++ = '^';
@ -5420,14 +5443,11 @@ parser_yyerror(struct parser_params *parser, const YYLTYPE *yylloc, const char *
}
*p2 = '\0';
newline = "\n";
compile_error(PARSER_ARG "%s%s""%s%.*s%s%s""%s%s",
msg, newline,
pre, (int)len, code, post, newline,
pre, caret);
}
else {
len = 0;
}
compile_error(PARSER_ARG "%s%s""%s%.*s%s%s""%s%s",
msg, newline,
pre, (int)len, code, post, newline,
pre, caret);
#else
dispatch1(parse_error, STR_NEW2(msg));
ripper_error();