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[ruby/prism] Only use e suffix for floats if followed by +, -, or digit

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https://github.com/ruby/prism/commit/164de502c9
This commit is contained in:
Kevin Newton 2024-03-13 12:50:27 -04:00 committed by git
parent bf17093a42
commit c17f33aa42
1 changed files with 16 additions and 9 deletions
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21
prism/prism.c
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@ -7595,26 +7595,33 @@ lex_optional_float_suffix(pm_parser_t *parser, bool* seen_e) {
parser->current.end += pm_strspn_decimal_number_validate(parser, parser->current.end);
type = PM_TOKEN_FLOAT;
} else {
// If we had a . and then something else, then it's not a float suffix on
// a number it's a method call or something else.
// If we had a . and then something else, then it's not a float
// suffix on a number it's a method call or something else.
return type;
}
}
// Here we're going to attempt to parse the optional exponent portion of a
// float. If it's not there, it's okay and we'll just continue on.
if (match(parser, 'e') || match(parser, 'E')) {
(void) (match(parser, '+') || match(parser, '-'));
*seen_e = true;
if ((peek(parser) == 'e') || (peek(parser) == 'E')) {
if ((peek_offset(parser, 1) == '+') || (peek_offset(parser, 1) == '-')) {
parser->current.end += 2;
if (pm_char_is_decimal_digit(peek(parser))) {
parser->current.end++;
parser->current.end += pm_strspn_decimal_number_validate(parser, parser->current.end);
type = PM_TOKEN_FLOAT;
} else {
pm_parser_err_current(parser, PM_ERR_INVALID_FLOAT_EXPONENT);
type = PM_TOKEN_FLOAT;
}
} else if (pm_char_is_decimal_digit(peek_offset(parser, 1))) {
parser->current.end++;
parser->current.end += pm_strspn_decimal_number_validate(parser, parser->current.end);
} else {
return type;
}
*seen_e = true;
type = PM_TOKEN_FLOAT;
}
return type;