[vala] GIR writer: Generate allow-none attributes

[Jürg Billeter <juergbi src gnome org>]

commit 9ff319ed826b2bd7abfd795d50b270bba5aa97d6
Author: Didier 'Ptitjes <ptitjes free fr>
Date:   Sat Mar 21 04:22:24 2009 +0100

    GIR writer: Generate allow-none attributes
    
    Generate allow-none attributes on parameters, return values and fields.
    
    Signed-off-by: Didier 'Ptitjes <ptitjes free fr>
---
 gobject/valagirwriter.vala |   12 +++++++++++-
 1 files changed, 11 insertions(+), 1 deletions(-)

diff --git a/gobject/valagirwriter.vala b/gobject/valagirwriter.vala
index 2a22e84..1ba0ea8 100644
--- a/gobject/valagirwriter.vala
+++ b/gobject/valagirwriter.vala
@@ -377,7 +377,11 @@ public class Vala.GIRWriter : CodeVisitor {
 		}
 
 		write_indent ();
-		stream.printf ("<field name=\"%s\">\n", f.get_cname ());
+		stream.printf ("<field name=\"%s\"", f.get_cname ());
+		if (f.field_type.nullable) {
+			stream.printf (" allow-none=\"1\"");
+		}
+		stream.printf (">\n");
 		indent++;
 
 		write_type (f.field_type);
@@ -435,6 +439,9 @@ public class Vala.GIRWriter : CodeVisitor {
 					stream.printf (" transfer-ownership=\"none\"");
 				}
 			}
+			if (param.parameter_type.nullable) {
+				stream.printf (" allow-none=\"1\"");
+			}
 			stream.printf (">\n");
 			indent++;
 
@@ -603,6 +610,9 @@ public class Vala.GIRWriter : CodeVisitor {
 		} else {
 			stream.printf (" transfer-ownership=\"none\"");
 		}
+		if (type.nullable) {
+			stream.printf (" allow-none=\"1\"");
+		}
 		stream.printf (">\n");
 		indent++;