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[ruby/yarp] Handle pound terminator in isolation

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https://github.com/ruby/yarp/commit/1cfce46107
This commit is contained in:
Kevin Newton 2023-07-31 09:33:01 -04:00 committed by Takashi Kokubun
parent ede55edbd5
commit 86b32dac92
Notes: git 2023-08-17 00:48:16 +00:00 
Merged: https://github.com/ruby/ruby/pull/8226
1 changed files with 18 additions and 14 deletions
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32
yarp/yarp.c
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@ -6645,10 +6645,13 @@ parser_lex(yp_parser_t *parser) {
LEX(YP_TOKEN_EOF);
}
// Get a reference to the current mode.
yp_lex_mode_t *mode = parser->lex_modes.current;
// These are the places where we need to split up the content of the
// regular expression. We'll use strpbrk to find the first of these
// characters.
const char *breakpoints = parser->lex_modes.current->as.regexp.breakpoints;
const char *breakpoints = mode->as.regexp.breakpoints;
const char *breakpoint = yp_strpbrk(parser, parser->current.end, breakpoints, parser->end - parser->current.end);
while (breakpoint != NULL) {
@ -6673,14 +6676,15 @@ parser_lex(yp_parser_t *parser) {
break;
}
case '#': {
yp_token_type_t type = lex_interpolation(parser, breakpoint);
if (type != YP_TOKEN_NOT_PROVIDED) {
LEX(type);
}
// If the terminator is #, then we need to fall into the
// default case. Otherwise we'll attempt to lex
// interpolation.
if (mode->as.regexp.terminator != '#') {
yp_token_type_t type = lex_interpolation(parser, breakpoint);
if (type != YP_TOKEN_NOT_PROVIDED) {
LEX(type);
}
// We need to check if the terminator was # before skipping over
// to the next breakpoint
if (parser->lex_modes.current->as.regexp.terminator != '#') {
// If we haven't returned at this point then we had something
// that looked like an interpolated class or instance variable
// like "#@" but wasn't actually. In this case we'll just skip
@ -6691,11 +6695,11 @@ parser_lex(yp_parser_t *parser) {
}
/* fallthrough */
default: {
if (*breakpoint == parser->lex_modes.current->as.regexp.incrementor) {
if (*breakpoint == mode->as.regexp.incrementor) {
// If we've hit the incrementor, then we need to skip past it and
// find the next breakpoint.
breakpoint = yp_strpbrk(parser, breakpoint + 1, breakpoints, parser->end - (breakpoint + 1));
parser->lex_modes.current->as.regexp.nesting++;
mode->as.regexp.nesting++;
break;
}
@ -6704,7 +6708,7 @@ parser_lex(yp_parser_t *parser) {
// that in the list of newlines.
yp_newline_list_append(&parser->newline_list, breakpoint);
if (parser->lex_modes.current->as.regexp.terminator != '\n') {
if (mode->as.regexp.terminator != '\n') {
// If the terminator is not a newline, then we
// can set the next breakpoint and continue.
breakpoint = yp_strpbrk(parser, breakpoint + 1, breakpoints, parser->end - (breakpoint + 1));
@ -6715,11 +6719,11 @@ parser_lex(yp_parser_t *parser) {
// terminator so we need to continue on.
}
assert(*breakpoint == parser->lex_modes.current->as.regexp.terminator);
assert(*breakpoint == mode->as.regexp.terminator);
if (parser->lex_modes.current->as.regexp.nesting > 0) {
if (mode->as.regexp.nesting > 0) {
breakpoint = yp_strpbrk(parser, breakpoint + 1, breakpoints, parser->end - (breakpoint + 1));
parser->lex_modes.current->as.regexp.nesting--;
mode->as.regexp.nesting--;
break;
}