[vala] dova: Fix virtual methods throwing errors

[Jürg Billeter <juergbi src gnome org>]

commit 47b5fc36cd671e45fb5ed537e5eaba013571a75e
Author: Jürg Billeter <j bitron ch>
Date:   Thu Jun 17 09:44:25 2010 +0200

    dova: Fix virtual methods throwing errors

 codegen/valadovaobjectmodule.vala |   30 ++++++++++++++++++++++++++----
 1 files changed, 26 insertions(+), 4 deletions(-)
---
diff --git a/codegen/valadovaobjectmodule.vala b/codegen/valadovaobjectmodule.vala
index 99e8c96..d949915 100644
--- a/codegen/valadovaobjectmodule.vala
+++ b/codegen/valadovaobjectmodule.vala
@@ -1014,6 +1014,9 @@ internal class Vala.DovaObjectModule : DovaArrayModule {
 			if (m.return_type is GenericType) {
 				param_list += ", void *";
 			}
+			if (m.get_error_types ().size > 0) {
+				param_list += ", DovaError **";
+			}
 			param_list += ")";
 
 			var override_func = new CCodeFunction ("%soverride_%s".printf (m.parent_symbol.get_lower_case_cprefix (), m.name));
@@ -1163,6 +1166,10 @@ internal class Vala.DovaObjectModule : DovaArrayModule {
 			if (m.return_type is GenericType) {
 				vfunc.add_parameter (new CCodeFormalParameter ("result", "void *"));
 			}
+			if (m.get_error_types ().size > 0) {
+				var cparam = new CCodeFormalParameter ("error", "DovaError**");
+				vfunc.add_parameter (cparam);
+			}
 
 			var vcast = get_type_private_from_type ((ObjectTypeSymbol) m.parent_symbol, get_type_from_instance (new CCodeIdentifier ("this")));
 
@@ -1173,8 +1180,12 @@ internal class Vala.DovaObjectModule : DovaArrayModule {
 			}
 			if (m.return_type is GenericType) {
 				vcall.add_argument (new CCodeIdentifier ("result"));
-				vfunc.block.add_statement (new CCodeExpressionStatement (vcall));
-			} else if (m.return_type is VoidType) {
+			}
+			if (m.get_error_types ().size > 0) {
+				vcall.add_argument (new CCodeIdentifier ("error"));
+			}
+
+			if (m.return_type is VoidType || m.return_type is GenericType) {
 				vfunc.block.add_statement (new CCodeExpressionStatement (vcall));
 			} else {
 				vfunc.block.add_statement (new CCodeReturnStatement (vcall));
@@ -1198,6 +1209,10 @@ internal class Vala.DovaObjectModule : DovaArrayModule {
 			if (m.return_type is GenericType) {
 				vfunc.add_parameter (new CCodeFormalParameter ("result", "void *"));
 			}
+			if (m.get_error_types ().size > 0) {
+				var cparam = new CCodeFormalParameter ("error", "DovaError**");
+				vfunc.add_parameter (cparam);
+			}
 
 			var base_type = new CCodeIdentifier ("base_type");
 
@@ -1210,8 +1225,12 @@ internal class Vala.DovaObjectModule : DovaArrayModule {
 			}
 			if (m.return_type is GenericType) {
 				vcall.add_argument (new CCodeIdentifier ("result"));
-				vfunc.block.add_statement (new CCodeExpressionStatement (vcall));
-			} else if (m.return_type is VoidType) {
+			}
+			if (m.get_error_types ().size > 0) {
+				vcall.add_argument (new CCodeIdentifier ("error"));
+			}
+
+			if (m.return_type is VoidType || m.return_type is GenericType) {
 				vfunc.block.add_statement (new CCodeExpressionStatement (vcall));
 			} else {
 				vfunc.block.add_statement (new CCodeReturnStatement (vcall));
@@ -1228,6 +1247,9 @@ internal class Vala.DovaObjectModule : DovaArrayModule {
 			if (m.return_type is GenericType) {
 				param_list += ", void *";
 			}
+			if (m.get_error_types ().size > 0) {
+				param_list += ", DovaError **";
+			}
 			param_list += ")";
 
 			var override_func = new CCodeFunction ("%soverride_%s".printf (m.parent_symbol.get_lower_case_cprefix (), m.name));