+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;
+}
+
+static notmuch_status_t
+_sexp_parse_infix (notmuch_database_t *notmuch, const sexp_t *sx, Xapian::Query &output)
+{
+ try {
+ output = notmuch->query_parser->parse_query (sx->val, NOTMUCH_QUERY_PARSER_FLAGS);
+ } catch (const Xapian::QueryParserError &error) {
+ _notmuch_database_log (notmuch, "Syntax error in infix query: %s\n", sx->val);
+ return NOTMUCH_STATUS_BAD_QUERY_SYNTAX;
+ } catch (const Xapian::Error &error) {
+ if (! notmuch->exception_reported) {
+ _notmuch_database_log (notmuch,
+ "A Xapian exception occurred parsing query: %s\n",
+ error.get_msg ().c_str ());
+ _notmuch_database_log_append (notmuch,
+ "Query string was: %s\n",
+ sx->val);
+ notmuch->exception_reported = true;
+ return NOTMUCH_STATUS_XAPIAN_EXCEPTION;
+ }
+ }
+ return NOTMUCH_STATUS_SUCCESS;
+}
+
+static notmuch_status_t
+_sexp_parse_header (notmuch_database_t *notmuch, const _sexp_prefix_t *parent,
+ const sexp_t *sx, Xapian::Query &output)
+{
+ _sexp_prefix_t user_prefix;
+
+ user_prefix.name = sx->list->val;
+ user_prefix.flags = SEXP_FLAG_FIELD | SEXP_FLAG_WILDCARD;
+
+ if (parent) {
+ _notmuch_database_log (notmuch, "nested field: '%s' inside '%s'\n",
+ sx->list->val, parent->name);
+ return NOTMUCH_STATUS_BAD_QUERY_SYNTAX;
+ }
+
+ parent = &user_prefix;
+
+ return _sexp_combine_query (notmuch, parent, Xapian::Query::OP_AND, Xapian::Query::MatchAll,
+ sx->list->next, output);
+}
+
+static notmuch_status_t
+maybe_saved_squery (notmuch_database_t *notmuch, const _sexp_prefix_t *parent, const sexp_t *sx,
+ Xapian::Query &output)
+{
+ char *key;
+ char *expansion = NULL;
+ notmuch_status_t status;
+ sexp_t *saved_sexp;
+ void *local = talloc_new (notmuch);
+ char *buf;
+
+ key = talloc_asprintf (local, "squery.%s", sx->list->val);
+ if (! key) {
+ status = NOTMUCH_STATUS_OUT_OF_MEMORY;
+ goto DONE;
+ }
+
+ status = notmuch_database_get_config (notmuch, key, &expansion);
+ if (status)
+ goto DONE;
+ if (EMPTY_STRING (expansion)) {
+ status = NOTMUCH_STATUS_IGNORED;
+ goto DONE;
+ }
+
+ buf = talloc_strdup (local, expansion);
+ /* XXX TODO: free this memory */
+ saved_sexp = parse_sexp (buf, strlen (expansion));
+ if (! saved_sexp) {
+ _notmuch_database_log (notmuch, "invalid saved s-expression query: '%s'\n", expansion);
+ status = NOTMUCH_STATUS_BAD_QUERY_SYNTAX;
+ goto DONE;
+ }
+
+ status = _sexp_to_xapian_query (notmuch, parent, saved_sexp, output);
+
+ DONE:
+ if (local)
+ talloc_free (local);
+
+ return status;
+}
+