[tracker/wip/carlosg/sparql-parser-ng: 288/306] libtracker-data: Add INSERT/DELETE SILENT syntax back

[Carlos Garnacho <carlosg src gnome org>]

commit 933fd8830490561a95c56d916f84ff442890a4eb
Author: Carlos Garnacho <carlosg gnome org>
Date:   Sun Sep 2 11:34:35 2018 +0200

    libtracker-data: Add INSERT/DELETE SILENT syntax back
    
    This is a tracker extension to SPARQL.

 src/libtracker-data/tracker-sparql-grammar.h | 12 +++++++++---
 src/libtracker-data/tracker-sparql.c         | 15 +++++++++++++--
 2 files changed, 22 insertions(+), 5 deletions(-)
---
diff --git a/src/libtracker-data/tracker-sparql-grammar.h b/src/libtracker-data/tracker-sparql-grammar.h
index 28698af98..8e305b1fc 100644
--- a/src/libtracker-data/tracker-sparql-grammar.h
+++ b/src/libtracker-data/tracker-sparql-grammar.h
@@ -1228,15 +1228,21 @@ static const TrackerGrammarRule rule_UsingClause[] = { L(USING), OR(helper_Using
  *
  * TRACKER EXTENSION:
  * Clause may start with:
- * 'INSERT' ('OR' 'REPLACE')?
+ * 'INSERT' ('OR' 'REPLACE')? ('SILENT')?
  */
 static const TrackerGrammarRule helper_InsertClause_seq_1[] = { L(OR), L(REPLACE), NIL };
 static const TrackerGrammarRule helper_InsertClause_opt_1[] = { S(helper_InsertClause_seq_1), NIL };
-static const TrackerGrammarRule rule_InsertClause[] = { L(INSERT), OPT(helper_InsertClause_opt_1), 
R(QuadPattern), NIL };
+static const TrackerGrammarRule helper_InsertClause_opt_2[] = { L(SILENT), NIL };
+static const TrackerGrammarRule rule_InsertClause[] = { L(INSERT), OPT(helper_InsertClause_opt_1), 
OPT(helper_InsertClause_opt_2), R(QuadPattern), NIL };
 
 /* DeleteClause ::= 'DELETE' QuadPattern
+ *
+ * TRACKER EXTENSION:
+ * Clause may start too with:
+ * 'DELETE' 'SILENT'
  */
-static const TrackerGrammarRule rule_DeleteClause[] = { L(DELETE), R(QuadPattern), NIL };
+static const TrackerGrammarRule helper_DeleteClause_opt_1[] = { L(SILENT), NIL };
+static const TrackerGrammarRule rule_DeleteClause[] = { L(DELETE), OPT(helper_DeleteClause_opt_1), 
R(QuadPattern), NIL };
 
 /* Modify ::= ( 'WITH' iri )? ( DeleteClause InsertClause? | InsertClause ) UsingClause* 'WHERE' 
GroupGraphPattern
  */
diff --git a/src/libtracker-data/tracker-sparql.c b/src/libtracker-data/tracker-sparql.c
index 68b4b7bc4..20538e030 100644
--- a/src/libtracker-data/tracker-sparql.c
+++ b/src/libtracker-data/tracker-sparql.c
@@ -112,6 +112,8 @@ struct _TrackerSparql
        GVariantBuilder *blank_nodes;
        GHashTable *solution_var_map;
 
+       gboolean silent;
+
        struct {
                TrackerContext *context;
                TrackerContext *select_context;
@@ -2759,9 +2761,15 @@ translate_DeleteClause (TrackerSparql  *sparql,
                         GError        **error)
 {
        /* DeleteClause ::= 'DELETE' QuadPattern
+        *
+        * TRACKER EXTENSION:
+        * Clause may start too with:
+        * 'DELETE' 'SILENT'
         */
        sparql->current_state.type = TRACKER_SPARQL_TYPE_DELETE;
        _expect (sparql, RULE_TYPE_LITERAL, LITERAL_DELETE);
+       sparql->silent = _accept (sparql, RULE_TYPE_LITERAL, LITERAL_SILENT);
+
        _call_rule (sparql, NAMED_RULE_QuadPattern, error);
 
        return TRUE;
@@ -2775,7 +2783,7 @@ translate_InsertClause (TrackerSparql  *sparql,
         *
         * TRACKER EXTENSION:
         * Clause may start with:
-        * 'INSERT' ('OR' 'REPLACE')?
+        * 'INSERT' ('OR' 'REPLACE')? ('SILENT')?
         */
        sparql->current_state.blank_node_map =
                g_hash_table_new_full (g_str_hash, g_str_equal,
@@ -2791,6 +2799,8 @@ translate_InsertClause (TrackerSparql  *sparql,
                sparql->current_state.type = TRACKER_SPARQL_TYPE_INSERT;
        }
 
+       sparql->silent = _accept (sparql, RULE_TYPE_LITERAL, LITERAL_SILENT);
+
        _call_rule (sparql, NAMED_RULE_QuadPattern, error);
 
        if (sparql->blank_nodes) {
@@ -4218,10 +4228,11 @@ translate_GraphNode (TrackerSparql  *sparql,
 
        tracker_token_unset (&sparql->current_state.object);
 
-       if (inner_error) {
+       if (inner_error && !sparql->silent) {
                g_propagate_error (error, inner_error);
                return FALSE;
        } else {
+               g_clear_error (&inner_error);
                return TRUE;
        }
 }