+static notmuch_status_t
+_sexp_parse_wildcard (notmuch_database_t *notmuch,
+ const _sexp_prefix_t *parent,
+ std::string match,
+ Xapian::Query &output)
+{
+
+ std::string term_prefix = parent ? _find_prefix (parent->name) : "";
+
+ if (parent && ! (parent->flags & SEXP_FLAG_WILDCARD)) {
+ _notmuch_database_log (notmuch, "'%s' does not support wildcard queries\n", parent->name);
+ return NOTMUCH_STATUS_BAD_QUERY_SYNTAX;
+ }
+
+ output = Xapian::Query (Xapian::Query::OP_WILDCARD,
+ term_prefix + Xapian::Unicode::tolower (match));
+ return NOTMUCH_STATUS_SUCCESS;
+}
+
+static notmuch_status_t
+_sexp_parse_one_term (notmuch_database_t *notmuch, std::string term_prefix, const sexp_t *sx,
+ Xapian::Query &output)
+{
+ Xapian::Stem stem = *(notmuch->stemmer);
+
+ if (sx->aty == SEXP_BASIC && unicode_word_utf8 (sx->val)) {
+ std::string term = Xapian::Unicode::tolower (sx->val);
+
+ output = Xapian::Query ("Z" + term_prefix + stem (term));
+ return NOTMUCH_STATUS_SUCCESS;
+ } else {
+ return _sexp_parse_phrase (term_prefix, sx->val, output);
+ }
+
+}
+
+notmuch_status_t
+_sexp_parse_regex (notmuch_database_t *notmuch,
+ const _sexp_prefix_t *prefix, const _sexp_prefix_t *parent,
+ std::string val, Xapian::Query &output)
+{
+ if (! parent) {
+ _notmuch_database_log (notmuch, "illegal '%s' outside field\n",
+ prefix->name);
+ return NOTMUCH_STATUS_BAD_QUERY_SYNTAX;
+ }
+
+ if (! (parent->flags & SEXP_FLAG_REGEX)) {
+ _notmuch_database_log (notmuch, "'%s' not supported in field '%s'\n",
+ prefix->name, parent->name);
+ return NOTMUCH_STATUS_BAD_QUERY_SYNTAX;
+ }
+
+ std::string msg; /* ignored */
+
+ return _notmuch_regexp_to_query (notmuch, Xapian::BAD_VALUENO, parent->name,
+ val, output, msg);
+}
+
+
+static notmuch_status_t
+_sexp_expand_query (notmuch_database_t *notmuch,
+ const _sexp_prefix_t *prefix, const _sexp_prefix_t *parent,
+ const sexp_t *sx, Xapian::Query &output)
+{
+ Xapian::Query subquery;
+ notmuch_status_t status;
+ std::string msg;
+
+ if (! (parent->flags & SEXP_FLAG_EXPAND)) {
+ _notmuch_database_log (notmuch, "'%s' unsupported inside '%s'\n", prefix->name, parent->name);
+ return NOTMUCH_STATUS_BAD_QUERY_SYNTAX;
+ }
+
+ status = _sexp_combine_query (notmuch, NULL, prefix->xapian_op, prefix->initial, sx, subquery);
+ if (status)
+ return status;
+
+ status = _notmuch_query_expand (notmuch, parent->name, subquery, output, msg);
+ if (status) {
+ _notmuch_database_log (notmuch, "error expanding query %s\n", msg.c_str ());
+ }
+ return status;
+}
+