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2006-06-21 Gonzalo Paniagua Javier <gonzalo@ximian.com>

Browse Source 
* glade/HandlerNotFoundExeception.cs:
	* glade/XML.custom: provide a better error when the signature of a
	handler does not match the one of the event.


svn path=/trunk/gtk-sharp/; revision=61911
This commit is contained in:
Gonzalo Paniagua Javier 2006-06-21 15:57:26 +00:00
parent 7d9ac6ec4b
commit 1843575303
3 changed files with 75 additions and 1 deletions
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6
ChangeLog
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@ -1,3 +1,9 @@
2006-06-21 Gonzalo Paniagua Javier <gonzalo@ximian.com>
* glade/HandlerNotFoundExeception.cs:
* glade/XML.custom: provide a better error when the signature of a
handler does not match the one of the event.
2006-05-10 Mike Kestner <mkestner@novell.com>
* bootstrap-2.10 : strap for the new 2.9.0 API.

11
glade/HandlerNotFoundExeception.cs
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@ -52,6 +52,17 @@ namespace Glade {
this.delegate_type = delegate_type;
}
public HandlerNotFoundException (string message, string handler_name, string signal_name,
EventInfo evnt, Type delegate_type)
: base ((message != null) ? message : "No handler " + handler_name + " found for signal " + signal_name,
null)
{
this.handler_name = handler_name;
this.signal_name = signal_name;
this.evnt = evnt;
this.delegate_type = delegate_type;
}
protected HandlerNotFoundException (SerializationInfo info, StreamingContext context)
: base (info, context)
{

59
glade/XML.custom
View File

@ -257,12 +257,69 @@
if (!connected)
{
throw new HandlerNotFoundException (handler_name, signal_name, ei, delegate_type);
string msg = ExplainError (ei.Name, delegate_type, handler_type, handler_name);
throw new HandlerNotFoundException (msg, handler_name, signal_name, ei, delegate_type);
}
}
}
}
static string GetSignature (System.Reflection.MethodInfo method)
{
if (method == null)
return null;
System.Reflection.ParameterInfo [] parameters = method.GetParameters ();
System.Text.StringBuilder sb = new System.Text.StringBuilder ();
sb.Append ('(');
foreach (System.Reflection.ParameterInfo info in parameters) {
sb.Append (info.ParameterType.ToString ());
sb.Append (',');
}
if (sb.Length != 0)
sb.Length--;
sb.Append (')');
return sb.ToString ();
}
static string GetSignature (Type delegate_type)
{
System.Reflection.MethodInfo method = delegate_type.GetMethod ("Invoke");
return GetSignature (method);
}
const System.Reflection.BindingFlags flags = System.Reflection.BindingFlags.NonPublic |
System.Reflection.BindingFlags.Public |
System.Reflection.BindingFlags.Static |
System.Reflection.BindingFlags.Instance;
static string GetSignature (Type klass, string method_name)
{
try {
System.Reflection.MethodInfo method = klass.GetMethod (method_name, flags);
return GetSignature (method);
} catch {
// May be more than one method with that name and none matches
return null;
}
}
static string ExplainError (string event_name, Type deleg, Type klass, string method)
{
if (deleg == null || klass == null || method == null)
return null;
System.Text.StringBuilder sb = new System.Text.StringBuilder ();
string expected = GetSignature (deleg);
string actual = GetSignature (klass, method);
if (actual == null)
return null;
sb.AppendFormat ("The handler for the event {0} should take '{1}', " +
"but the signature of the provided handler ('{2}') is '{3}'\n",
event_name, expected, method, actual);
return sb.ToString ();
}
System.Reflection.MemberFilter signalFilter = new System.Reflection.MemberFilter (SignalFilter);