[vala] codegen: Remove fallback in delegate target handling

[Jürg Billeter <juergbi src gnome org>]

commit f261f2e0c3d50675a67d9d5009ae37c30d9ccfa8
Author: Jürg Billeter <j bitron ch>
Date:   Sun Oct 17 20:33:54 2010 +0200

    codegen: Remove fallback in delegate target handling

 codegen/valaccodebasemodule.vala         |    1 +
 codegen/valaccodedelegatemodule.vala     |   12 ++----------
 codegen/valaccodememberaccessmodule.vala |    7 +++++++
 vala/valamethod.vala                     |    1 +
 4 files changed, 11 insertions(+), 10 deletions(-)
---
diff --git a/codegen/valaccodebasemodule.vala b/codegen/valaccodebasemodule.vala
index 678d139..51a145a 100644
--- a/codegen/valaccodebasemodule.vala
+++ b/codegen/valaccodebasemodule.vala
@@ -3602,6 +3602,7 @@ public class Vala.CCodeBaseModule : CodeGenerator {
 			}
 		} else if (delegate_type != null && delegate_type.delegate_symbol.has_target) {
 			set_delegate_target (expr, new CCodeConstant ("NULL"));
+			set_delegate_target_destroy_notify (expr, new CCodeConstant ("NULL"));
 		}
 	}
 
diff --git a/codegen/valaccodedelegatemodule.vala b/codegen/valaccodedelegatemodule.vala
index 86734f2..8fc1610 100644
--- a/codegen/valaccodedelegatemodule.vala
+++ b/codegen/valaccodedelegatemodule.vala
@@ -129,17 +129,9 @@ public class Vala.CCodeDelegateModule : CCodeArrayModule {
 	}
 
 	public override CCodeExpression get_delegate_target_cexpression (Expression delegate_expr, out CCodeExpression delegate_target_destroy_notify) {
-		delegate_target_destroy_notify = new CCodeConstant ("NULL");
+		delegate_target_destroy_notify = get_delegate_target_destroy_notify (delegate_expr);
 
-		if (get_delegate_target_destroy_notify (delegate_expr) != null) {
-			delegate_target_destroy_notify = get_delegate_target_destroy_notify (delegate_expr);
-		}
-		var target_expr = get_delegate_target (delegate_expr);
-		if (target_expr == null) {
-			return new CCodeConstant ("NULL");
-		} else {
-			return target_expr;
-		}
+		return get_delegate_target (delegate_expr);
 	}
 
 	public override string get_delegate_target_destroy_notify_cname (string delegate_cname) {
diff --git a/codegen/valaccodememberaccessmodule.vala b/codegen/valaccodememberaccessmodule.vala
index c17a6f6..6f57813 100644
--- a/codegen/valaccodememberaccessmodule.vala
+++ b/codegen/valaccodememberaccessmodule.vala
@@ -92,6 +92,7 @@ public class Vala.CCodeMemberAccessModule : CCodeControlFlowModule {
 			}
 
 			if (expr.target_type is DelegateType) {
+				set_delegate_target_destroy_notify (expr, new CCodeConstant ("NULL"));
 				if (m.binding == MemberBinding.STATIC) {
 					set_delegate_target (expr, new CCodeConstant ("NULL"));
 				} else if (m.is_async_callback) {
@@ -203,6 +204,7 @@ public class Vala.CCodeMemberAccessModule : CCodeControlFlowModule {
 					string target_cname = get_delegate_target_cname (field.get_cname ());
 					string target_destroy_notify_cname = get_delegate_target_destroy_notify_cname (field.get_cname ());
 
+					set_delegate_target_destroy_notify (expr, new CCodeConstant ("NULL"));
 					if (field.no_delegate_target) {
 						set_delegate_target (expr, new CCodeConstant ("NULL"));
 					} else {
@@ -271,6 +273,7 @@ public class Vala.CCodeMemberAccessModule : CCodeControlFlowModule {
 						}
 					}
 				} else if (field.variable_type is DelegateType) {
+					set_delegate_target_destroy_notify (expr, new CCodeConstant ("NULL"));
 					if (field.no_delegate_target) {
 						set_delegate_target (expr, new CCodeConstant ("NULL"));
 					} else {
@@ -502,6 +505,8 @@ public class Vala.CCodeMemberAccessModule : CCodeControlFlowModule {
 						set_delegate_target (expr, new CCodeIdentifier (get_delegate_target_cname (get_variable_cname (local.name))));
 						if (expr.value_type.value_owned) {
 							set_delegate_target_destroy_notify (expr, new CCodeIdentifier (get_delegate_target_destroy_notify_cname (get_variable_cname (local.name))));
+						} else {
+							set_delegate_target_destroy_notify (expr, new CCodeConstant ("NULL"));
 						}
 					}
 				}
@@ -594,6 +599,8 @@ public class Vala.CCodeMemberAccessModule : CCodeControlFlowModule {
 						set_delegate_target (expr, target_expr);
 						if (expr.value_type.value_owned) {
 							set_delegate_target_destroy_notify (expr, delegate_target_destroy_notify);
+						} else {
+							set_delegate_target_destroy_notify (expr, new CCodeConstant ("NULL"));
 						}
 					}
 				}
diff --git a/vala/valamethod.vala b/vala/valamethod.vala
index d48d356..6d61d6c 100644
--- a/vala/valamethod.vala
+++ b/vala/valamethod.vala
@@ -1115,6 +1115,7 @@ public class Vala.Method : Symbol {
 
 		var callback_param = new FormalParameter ("_callback_", callback_type);
 		callback_param.initializer = new NullLiteral (source_reference);
+		callback_param.initializer.target_type = callback_type.copy ();
 		callback_param.cparameter_position = -1;
 		callback_param.cdelegate_target_parameter_position = -0.9;