girparser: Generate default parameter names for callbacks

diff --git a/vala/valagirparser.vala b/vala/valagirparser.vala
index a88d5db8a5b1f69221b45409c48b7cb99c53c25f..d855b8f02da72b6ea8bdf3d5a8b7f0cd5d00036d 100644 (file)
--- a/vala/valagirparser.vala
+++ b/vala/valagirparser.vala
@@ -481,7 +481,7 @@ public class Vala.GirParser : CodeVisitor {
                return type;
        }
 
-       Parameter parse_parameter (out int array_length_idx = null, out int closure_idx = null, out int destroy_idx = null, out string? scope = null) {
+       Parameter parse_parameter (out int array_length_idx = null, out int closure_idx = null, out int destroy_idx = null, out string? scope = null, string? default_name = null) {
                Parameter param;
 
                if (&array_length_idx != null) {
@@ -496,6 +496,9 @@ public class Vala.GirParser : CodeVisitor {
 
                start_element ("parameter");
                string name = reader.get_attribute ("name");
+               if (name == null) {
+                       name = default_name;
+               }
                string direction = reader.get_attribute ("direction");
                string transfer = reader.get_attribute ("transfer-ownership");
                string allow_none = reader.get_attribute ("allow-none");
@@ -1170,7 +1173,11 @@ public class Vala.GirParser : CodeVisitor {
                        while (current_token == MarkupTokenType.START_ELEMENT) {
                                int array_length_idx, closure_idx, destroy_idx;
                                string scope;
-                               var param = parse_parameter (out array_length_idx, out closure_idx, out destroy_idx, out scope);
+                               string default_param_name = null;
+                               if (s is Delegate) {
+                                       default_param_name = "arg%d".printf (parameters.size);
+                               }
+                               var param = parse_parameter (out array_length_idx, out closure_idx, out destroy_idx, out scope, default_param_name);
                                if (array_length_idx != -1) {
                                        array_length_parameters.add (array_length_idx);
                                }