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Use parse_util_locate_cmdsubst_range when validating arguments

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Removes another usage of parse_util_locate_cmdsubst().
This commit is contained in:
ridiculousfish 2020-07-14 15:34:26 -07:00
parent 68d256a91c
commit 3532a955a6
1 changed files with 13 additions and 11 deletions
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24
src/parse_util.cpp
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@ -918,13 +918,17 @@ parser_test_error_bits_t parse_util_detect_errors_in_argument(const ast::argumen
size_t source_start = source_range->start;
int err = 0;
wchar_t *paran_begin, *paran_end;
int do_loop = 1;
wcstring working_copy = arg_src;
while (do_loop) {
const wchar_t *working_copy_cstr = working_copy.c_str();
switch (parse_util_locate_cmdsubst(working_copy_cstr, &paran_begin, &paran_end, false)) {
size_t paren_begin = 0;
size_t paren_end = 0;
size_t cursor = 0;
wcstring subst;
switch (parse_util_locate_cmdsubst_range(working_copy, &cursor, &subst, &paren_begin,
&paren_end, false)) {
case -1: {
err = 1;
if (out_errors) {
@ -937,12 +941,10 @@ parser_test_error_bits_t parse_util_detect_errors_in_argument(const ast::argumen
break;
}
case 1: {
const wcstring subst(paran_begin + 1, paran_end);
// Replace the command substitution with just INTERNAL_SEPARATOR.
size_t cmd_sub_start = paran_begin - working_copy_cstr;
size_t cmd_sub_len = paran_end + 1 - paran_begin;
working_copy.replace(cmd_sub_start, cmd_sub_len, wcstring(1, INTERNAL_SEPARATOR));
assert(paren_begin < paren_end && "Parens out of order?");
working_copy.replace(paren_begin, paren_end - paren_begin + 1, 1,
INTERNAL_SEPARATOR);
parse_error_list_t subst_errors;
err |= parse_util_detect_errors(subst, &subst_errors);
@ -950,7 +952,7 @@ parser_test_error_bits_t parse_util_detect_errors_in_argument(const ast::argumen
// Our command substitution produced error offsets relative to its source. Tweak the
// offsets of the errors in the command substitution to account for both its offset
// within the string, and the offset of the node.
size_t error_offset = cmd_sub_start + 1 + source_start;
size_t error_offset = paren_begin + 1 + source_start;
parse_error_offset_source_start(&subst_errors, error_offset);
if (out_errors != nullptr) {
@ -960,9 +962,9 @@ parser_test_error_bits_t parse_util_detect_errors_in_argument(const ast::argumen
// after we've replaced with internal separators, we can't distinguish between
// "" and (), and also we no longer have the source of the command substitution.
// As an optimization, this is only necessary if the last character is a $.
if (cmd_sub_start > 0 && working_copy.at(cmd_sub_start - 1) == L'$') {
if (paren_begin > 0 && working_copy.at(paren_begin - 1) == L'$') {
err |= detect_dollar_cmdsub_errors(
source_start, working_copy.substr(0, cmd_sub_start), subst, out_errors);
source_start, working_copy.substr(0, paren_begin), subst, out_errors);
}
}
break;