[tracker] libtracker-data: Add support for the ENCODE_FOR_URI() builtin function

[Carlos Garnacho <carlosg src gnome org>]

commit a586d9327e8130a86b11aa48e34581060390642c
Author: Carlos Garnacho <carlosg gnome org>
Date:   Tue Jul 28 22:04:16 2015 +0200

    libtracker-data: Add support for the ENCODE_FOR_URI() builtin function
    
    This function is defined in Sparql 1.1 query language recommendation,
    http://www.w3.org/TR/sparql11-query/#func-encode

 src/libtracker-data/tracker-sparql-expression.vala |    8 ++++++++
 src/libtracker-data/tracker-sparql-scanner.vala    |    5 +++++
 2 files changed, 13 insertions(+), 0 deletions(-)
---
diff --git a/src/libtracker-data/tracker-sparql-expression.vala 
b/src/libtracker-data/tracker-sparql-expression.vala
index 1e39160..b0dfb88 100644
--- a/src/libtracker-data/tracker-sparql-expression.vala
+++ b/src/libtracker-data/tracker-sparql-expression.vala
@@ -1184,6 +1184,14 @@ class Tracker.Sparql.Expression : Object {
                        var result = translate_function (sql, FN_NS + "contains");
                        expect (SparqlTokenType.CLOSE_PARENS);
                        return result;
+               case SparqlTokenType.ENCODE_FOR_URI:
+                       next ();
+                       expect (SparqlTokenType.OPEN_PARENS);
+                       sql.append ("SparqlEncodeForUri (");
+                       translate_expression_as_string (sql);
+                       sql.append (")");
+                       expect (SparqlTokenType.CLOSE_PARENS);
+                       return PropertyType.STRING;
                case SparqlTokenType.IF:
                        return translate_if_call (sql);
                case SparqlTokenType.SAMETERM:
diff --git a/src/libtracker-data/tracker-sparql-scanner.vala b/src/libtracker-data/tracker-sparql-scanner.vala
index f23f0f3..f5e919c 100644
--- a/src/libtracker-data/tracker-sparql-scanner.vala
+++ b/src/libtracker-data/tracker-sparql-scanner.vala
@@ -431,6 +431,9 @@ public class Tracker.SparqlScanner : Object {
                case 12:
                        if (matches (begin, "GROUP_CONCAT")) return SparqlTokenType.GROUP_CONCAT;
                        break;
+               case 14:
+                       if (matches (begin, "ENCODE_FOR_URI")) return SparqlTokenType.ENCODE_FOR_URI;
+                       break;
                }
                return SparqlTokenType.PN_PREFIX;
        }
@@ -950,6 +953,7 @@ public enum Tracker.SparqlTokenType {
        DOUBLE,
        DOUBLE_CIRCUMFLEX,
        DROP,
+       ENCODE_FOR_URI,
        EOF,
        EXISTS,
        FALSE,
@@ -1057,6 +1061,7 @@ public enum Tracker.SparqlTokenType {
                case DOUBLE: return "`DOUBLE'";
                case DOUBLE_CIRCUMFLEX: return "`^^'";
                case DROP: return "`DROP'";
+               case ENCODE_FOR_URI: return "`ENCODE_FOR_URI'";
                case EOF: return "end of file";
                case EXISTS: return "`EXISTS'";
                case FALSE: return "`false'";