NSScriptCoercionHandler ?
NSScriptCoercionHandler ?
- Subject: NSScriptCoercionHandler ?
- From: Jim Correia <email@hidden>
- Date: Tue, 21 Feb 2006 20:19:57 -0500
Does anyone have a working example of using NSScriptCoercionHandler?
The documentation says:
coerceValue:toClass:
Returns an object of the class toClass representing the value
specified by value.
- (id)coerceValue:(id)value toClass:(Class)toClass
Discussion
Returns nil if an error occurs. The object is autoreleased, so you
must retain it until you are finished with it.
Yet the following code always returns the input, without coercion or
error.
id input = nil;
id output = nil;
input = [NSNumber numberWithInt: 3];
output = [[NSScriptCoercionHandler sharedCoercionHandler]
coerceValue: input toClass: [NSString class]];
NSLog(@"coerced value = (%p, %p) %@", output, input, output);
input = [NSAppleEventDescriptor descriptorWithString: @"testing"];
output = [[NSScriptCoercionHandler sharedCoercionHandler]
coerceValue: input toClass: [NSTextStorage class]];
NSLog(@"coerced value = (%p, %p) %@", output, input, output);
input = [NSAppleEventDescriptor descriptorWithString: @"Mac OS
X:Users:correia:"];
output = [[NSScriptCoercionHandler sharedCoercionHandler]
coerceValue: input toClass: [NSURL class]];
NSLog(@"coerced value = (%p, %p) %@", output, input, output);
2006-02-21 20:17:57.624 CoercionTest[23500] coerced value =
(0x31bb30, 0x31bb30) 3
2006-02-21 20:17:57.628 CoercionTest[23500] coerced value =
(0x350820, 0x350820) <NSAppleEventDescriptor:
'utxt'($00740065007300740069006E0067$)
2006-02-21 20:17:57.629 CoercionTest[23500] coerced value =
(0x352da0, 0x352da0) <NSAppleEventDescriptor:
'utxt'($004D006100630020004F005300200058003A00550073006500720073003A0063
…$)
Thanks,
Jim _______________________________________________
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