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Improve parsing of 'expr' query terms

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Fixes #157 / 9DF85DF2-4BF5-4931-A30C-2592A10BB5C0
This commit is contained in:
John Wiegley 2010-06-01 17:32:41 -04:00
parent 6512201292
commit d19745afde
1 changed files with 9 additions and 6 deletions
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15
src/query.cc
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@ -55,8 +55,9 @@ query_t::lexer_t::token_t query_t::lexer_t::next_token()
if (consume_next_arg) {
consume_next_arg = false;
token_t tok(token_t::TERM, string(arg_i, arg_end));
arg_i = arg_end;
return token_t(token_t::TERM, (*begin).as_string());
return tok;
}
resume:
@ -70,23 +71,25 @@ query_t::lexer_t::token_t query_t::lexer_t::next_token()
return next_token();
goto resume;
case '\'':
case '/': {
string pat;
bool found_end_slash = false;
char closing = *arg_i;
bool found_closing = false;
for (++arg_i; arg_i != arg_end; ++arg_i) {
if (*arg_i == '\\') {
if (++arg_i == arg_end)
throw_(parse_error, _("Unexpected '\\' at end of pattern"));
}
else if (*arg_i == '/') {
else if (*arg_i == closing) {
++arg_i;
found_end_slash = true;
found_closing = true;
break;
}
pat.push_back(*arg_i);
}
if (! found_end_slash)
throw_(parse_error, _("Expected '/' at end of pattern"));
if (! found_closing)
throw_(parse_error, _("Expected '%1' at end of pattern") << closing);
if (pat.empty())
throw_(parse_error, _("Match pattern is empty"));