report warning when using null literal as return expression of method

2008-04-14  Juerg Billeter  <j@bitron.ch>

	* vala/valasemanticanalyzer.vala: report warning when using null
	  literal as return expression of method returning non-null value

	* */*.vala: fix warnings

svn path=/trunk/; revision=1228

1 files changed, 6 insertions, 6 deletions

diff --git a/vala/valatypesymbol.vala b/vala/valatypesymbol.vala
index a7d3055bb..f1f342ec3 100644
--- a/vala/valatypesymbol.vala
+++ b/vala/valatypesymbol.vala
@@ -141,7 +141,7 @@ public abstract class Vala.Typesymbol : Symbol {
 	 * @return the name of the GType name in C code or null if this data
 	 *         type is not registered with GType
 	 */
-	public virtual string get_type_id () {
+	public virtual string? get_type_id () {
 		return null;
 	}
 	
@@ -150,21 +150,21 @@ public abstract class Vala.Typesymbol : Symbol {
 	 *
 	 * @return type name for marshallers
 	 */
-	public virtual string get_marshaller_type_name () {
+	public virtual string? get_marshaller_type_name () {
 		return null;
 	}
 	
 	/**
 	 * Returns the cname of the GValue getter function,
 	 */
-	public virtual string get_get_value_function () {
+	public virtual string? get_get_value_function () {
 		return null;
 	}
 	
 	/**
 	 * Returns the cname of the GValue setter function,
 	 */
-	public virtual string get_set_value_function () {
+	public virtual string? get_set_value_function () {
 		return null;
 	}
 	
@@ -177,7 +177,7 @@ public abstract class Vala.Typesymbol : Symbol {
 	 *              name or null
 	 * @return      the upper case name to be used in C code
 	 */
-	public virtual string get_upper_case_cname (string? infix = null) {
+	public virtual string? get_upper_case_cname (string? infix = null) {
 		return null;
 	}
 
@@ -187,7 +187,7 @@ public abstract class Vala.Typesymbol : Symbol {
 	 *
 	 * @return	the name of the default value
 	 */
-	public virtual string get_default_value () {
+	public virtual string? get_default_value () {
 		return null;
 	}