plugin: Make sdb_plugin_info_t public.

[sysdb.git] / src / frontend / parser.c

diff --git a/src/frontend/parser.c b/src/frontend/parser.c
index b970e73671eceefd8fd697d3029046b8fb8ac7f1..76382d34b099756b09348e0afa67ab013a9ab7ca 100644 (file)
--- a/src/frontend/parser.c
+++ b/src/frontend/parser.c
@@ -27,36 +27,104 @@
 
 #include "sysdb.h"
 
+#include "frontend/connection-private.h"
 #include "frontend/parser.h"
 #include "frontend/grammar.h"
-#include "frontend/connection-private.h"
+
+#include "core/store.h"
+
+#include "utils/llist.h"
 
 #include <string.h>
 
 /*
- * public API
+ * private helper functions
  */
 
-int
-sdb_fe_parse(const char *query)
+static int
+scanner_init(const char *input, int len,
+               sdb_fe_yyscan_t *scanner, sdb_fe_yyextra_t *extra)
 {
-       sdb_fe_yyscan_t scanner;
-       int yyres;
+       if (! input)
+               return -1;
+
+       memset(extra, 0, sizeof(*extra));
+       extra->parsetree = sdb_llist_create();
+       extra->mode = SDB_PARSE_DEFAULT;
 
-       if (! query)
+       if (! extra->parsetree)
                return -1;
 
-       scanner = sdb_fe_scanner_init(query);
-       if (! scanner)
+       *scanner = sdb_fe_scanner_init(input, len, extra);
+       if (! scanner) {
+               sdb_llist_destroy(extra->parsetree);
                return -1;
+       }
+       return 0;
+} /* scanner_init */
+
+/*
+ * public API
+ */
+
+sdb_llist_t *
+sdb_fe_parse(const char *query, int len)
+{
+       sdb_fe_yyscan_t scanner;
+       sdb_fe_yyextra_t yyextra;
+       int yyres;
+
+       if (scanner_init(query, len, &scanner, &yyextra))
+               return NULL;
 
        yyres = sdb_fe_yyparse(scanner);
        sdb_fe_scanner_destroy(scanner);
 
-       if (yyres)
-               return -1;
-       return 0;
+       if (yyres) {
+               sdb_llist_destroy(yyextra.parsetree);
+               return NULL;
+       }
+       return yyextra.parsetree;
 } /* sdb_fe_parse */
 
+sdb_store_matcher_t *
+sdb_fe_parse_matcher(const char *expr, int len)
+{
+       sdb_fe_yyscan_t scanner;
+       sdb_fe_yyextra_t yyextra;
+
+       sdb_conn_node_t *node;
+       sdb_store_matcher_t *m;
+
+       int yyres;
+
+       if (scanner_init(expr, len, &scanner, &yyextra))
+               return NULL;
+
+       yyextra.mode = SDB_PARSE_EXPR;
+
+       yyres = sdb_fe_yyparse(scanner);
+       sdb_fe_scanner_destroy(scanner);
+
+       if (yyres) {
+               sdb_llist_destroy(yyextra.parsetree);
+               return NULL;
+       }
+
+       node = SDB_CONN_NODE(sdb_llist_get(yyextra.parsetree, 0));
+       if (! node)
+               return NULL;
+
+       if (node->cmd == CONNECTION_EXPR)
+               m = CONN_MATCHER(node)->matcher;
+       else
+               m = NULL;
+
+       CONN_MATCHER(node)->matcher = NULL;
+       sdb_llist_destroy(yyextra.parsetree);
+       sdb_object_deref(SDB_OBJ(node));
+       return m;
+} /* sdb_fe_parse_matcher */
+
 /* vim: set tw=78 sw=4 ts=4 noexpandtab : */