[tracker/wip/carlosg/sparql-parser-ng: 23/50] libtracker-data: Add 'INSERT OR REPLACE' SPARQL extension back

[Carlos Garnacho <carlosg src gnome org>]

commit 7250993f95bc7e924d5f0ee023cd0a0629c70376
Author: Carlos Garnacho <carlosg gnome org>
Date:   Sun Sep 2 11:01:30 2018 +0200

    libtracker-data: Add 'INSERT OR REPLACE' SPARQL extension back
    
    This is syntax traditionally allowed by Tracker.

 src/libtracker-data/tracker-sparql-grammar.h |  8 +++++++-
 src/libtracker-data/tracker-sparql.c         | 12 ++++++++++++
 2 files changed, 19 insertions(+), 1 deletion(-)
---
diff --git a/src/libtracker-data/tracker-sparql-grammar.h b/src/libtracker-data/tracker-sparql-grammar.h
index 2ade748de..28698af98 100644
--- a/src/libtracker-data/tracker-sparql-grammar.h
+++ b/src/libtracker-data/tracker-sparql-grammar.h
@@ -1225,8 +1225,14 @@ static const TrackerGrammarRule helper_UsingClause_or[] = { R(iri), S(helper_Usi
 static const TrackerGrammarRule rule_UsingClause[] = { L(USING), OR(helper_UsingClause_or), NIL };
 
 /* InsertClause ::= 'INSERT' QuadPattern
+ *
+ * TRACKER EXTENSION:
+ * Clause may start with:
+ * 'INSERT' ('OR' 'REPLACE')?
  */
-static const TrackerGrammarRule rule_InsertClause[] = { L(INSERT), R(QuadPattern), NIL };
+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 };
 
 /* DeleteClause ::= 'DELETE' QuadPattern
  */
diff --git a/src/libtracker-data/tracker-sparql.c b/src/libtracker-data/tracker-sparql.c
index a7eac02e2..68b4b7bc4 100644
--- a/src/libtracker-data/tracker-sparql.c
+++ b/src/libtracker-data/tracker-sparql.c
@@ -2772,6 +2772,10 @@ translate_InsertClause (TrackerSparql  *sparql,
                         GError        **error)
 {
        /* InsertClause ::= 'INSERT' QuadPattern
+        *
+        * TRACKER EXTENSION:
+        * Clause may start with:
+        * 'INSERT' ('OR' 'REPLACE')?
         */
        sparql->current_state.blank_node_map =
                g_hash_table_new_full (g_str_hash, g_str_equal,
@@ -2779,6 +2783,14 @@ translate_InsertClause (TrackerSparql  *sparql,
 
        sparql->current_state.type = TRACKER_SPARQL_TYPE_INSERT;
        _expect (sparql, RULE_TYPE_LITERAL, LITERAL_INSERT);
+
+       if (_accept (sparql, RULE_TYPE_LITERAL, LITERAL_OR)) {
+               _expect (sparql, RULE_TYPE_LITERAL, LITERAL_REPLACE);
+               sparql->current_state.type = TRACKER_SPARQL_TYPE_UPDATE;
+       } else {
+               sparql->current_state.type = TRACKER_SPARQL_TYPE_INSERT;
+       }
+
        _call_rule (sparql, NAMED_RULE_QuadPattern, error);
 
        if (sparql->blank_nodes) {