vapigen: Support default_value for arguments

diff --git a/vapigen/valagidlparser.vala b/vapigen/valagidlparser.vala
index e25515755fe68ebcb94fb41d9431c1216074c09d..b686be2886bd2ab69eb45357b2cbcef94728bfa6 100644 (file)
--- a/vapigen/valagidlparser.vala
+++ b/vapigen/valagidlparser.vala
@@ -1759,6 +1759,30 @@ public class Vala.GIdlParser : CodeVisitor {
                                                foreach (string type_arg in type_args) {
                                                        param_type.add_type_argument (get_type_from_string (type_arg));
                                                }
+                                       } else if (nv[0] == "default_value") {
+                                               var val = eval (nv[1]);
+                                               if (val == "null") {
+                                                       p.default_expression = new NullLiteral (param_type.source_reference);
+                                               } else if (val == "true") {
+                                                       p.default_expression = new BooleanLiteral (true, param_type.source_reference);
+                                               } else if (val == "false") {
+                                                       p.default_expression = new BooleanLiteral (false, param_type.source_reference);
+                                               } else {
+                                                       unowned string endptr;
+                                                       unowned string val_end = val.offset (val.len ());
+
+                                                       val.to_long (out endptr);
+                                                       if ((long)endptr == (long)val_end) {
+                                                               p.default_expression = new IntegerLiteral (val, param_type.source_reference);
+                                                       } else {
+                                                               val.to_double (out endptr);
+                                                               if ((long)endptr == (long)val_end) {
+                                                                       p.default_expression = new RealLiteral (val, param_type.source_reference);
+                                                               } else {
+                                                                       p.default_expression = new StringLiteral ("\"%s\"".printf (val), param_type.source_reference);
+                                                               }
+                                                       }
+                                               }
                                        }
                                }
                        }