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Initial support for valueForKey: supporting sets and arrays.

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Reviewed by me.
This commit is contained in:
Francisco Ryan Tolmasky I committed 2010-12-24 12:42:28 -08:00
1 parent d23bf7b927
commit e33c7f6be4
1 file changed
+65 -39
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Foundation/CPKeyValueCoding.j
+65 -39
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@@ -34,35 +34,6 @@ var CPObjectAccessorsForClassKey = @"$CPObjectAccessorsForClassKey",
CPObjectModifiersForClassKey = @"$CPObjectModifiersForClassKey",
CPObjectInstanceVariablesForClassKey = @"$CPObjectInstanceVariablesForClassKey";
var _accessorForKey = function(theClass, aKey)
{
var selector = nil,
accessors = theClass[CPObjectAccessorsForClassKey];
if (!accessors)
accessors = theClass[CPObjectAccessorsForClassKey] = { };
else if (accessors.hasOwnProperty(aKey))
return accessors[aKey];
var capitalizedKey = aKey.charAt(0).toUpperCase() + aKey.substr(1);
[theClass instancesRespondToSelector:selector = CPSelectorFromString("get" + capitalizedKey)] ||
[theClass instancesRespondToSelector:selector = CPSelectorFromString(aKey)] ||
[theClass instancesRespondToSelector:selector = CPSelectorFromString("is" + capitalizedKey)] ||
//FIXME: is deprecated in Cocoa 10.3
[theClass instancesRespondToSelector:selector = CPSelectorFromString("_get" + capitalizedKey)] ||
//FIXME: is deprecated in Cocoa 10.3
[theClass instancesRespondToSelector:selector = CPSelectorFromString("_" + aKey)] ||
//FIXME: was NEVER supported by Cocoa
[theClass instancesRespondToSelector:selector = CPSelectorFromString("_is" + capitalizedKey)] ||
(selector = nil);
accessors[aKey] = selector;
return selector;
}
var _modifierForKey = function(theClass, aKey)
{
var selector = nil,
@@ -120,24 +91,79 @@ var _ivarForKey = function(theClass, aKey)
return YES;
}
- (id)_arrayValueForKey:(CPString)aKey
{
return [[_CPKVCArray alloc] initWithKey:aKey forProxyObject:self];
}
- (id)_setValueForKey:(CPString)aKey
{
return [[_CPKVCSet alloc] initWithKey:aKey forProxyObject:self];
}
- (id)valueForKey:(CPString)aKey
{
var theClass = [self class],
selector = _accessorForKey(theClass, aKey);
accessor = nil,
accessors = theClass[CPObjectAccessorsForClassKey];
if (selector)
return objj_msgSend(self, selector);
if (!accessors)
accessors = theClass[CPObjectAccessorsForClassKey] = { };
//FIXME: at this point search for array access methods: "countOf<Key>", "objectIn<Key>AtIndex:", "<key>AtIndexes:"
// or set access methods: "countOf<Key>", "enumeratorOf<Key>", "memberOf<Key>:"
//and return (immutable) array/set proxy! (see NSKeyValueCoding.h)
if (accessors.hasOwnProperty(aKey))
accessor = accessors[aKey];
if ([theClass accessInstanceVariablesDirectly])
else
{
var ivar = _ivarForKey(theClass, aKey);
var selector = nil,
capitalizedKey = aKey.charAt(0).toUpperCase() + aKey.substr(1),
underscoreKey = nil,
isKey = nil;
if (ivar)
return self[ivar];
if ([theClass instancesRespondToSelector:selector = sel_getUid("get" + capitalizedKey)] ||
[theClass instancesRespondToSelector:selector = sel_getUid(aKey)] ||
[theClass instancesRespondToSelector:selector = sel_getUid((isKey = "is" + capitalizedKey))] ||
//FIXME: is deprecated in Cocoa 10.3
[theClass instancesRespondToSelector:selector = sel_getUid("_get" + capitalizedKey)] ||
//FIXME: is deprecated in Cocoa 10.3
[theClass instancesRespondToSelector:selector = sel_getUid((underscoreKey = "_" + aKey))] ||
//FIXME: was NEVER supported by Cocoa
[theClass instancesRespondToSelector:selector = sel_getUid("_" + isKey)])
accessor = accessors[aKey] = [0, selector];
// countOf means this might be an ordered to-many or unordered to-many
else if ([theClass instancesRespondToSelector:sel_getUid("countOf" + capitalizedKey)])
{
// Ordered to-many
if ([theClass instancesRespondToSelector:sel_getUid("objectIn" + capitalizedKey + "atIndex:")] ||
[theClass instancesRespondToSelector:sel_getUid(key + "AtIndexes:")])
accessor = accessors[aKey] = [1, @selector(_arrayValueForKey:)];
// Unordered to-many
else if ([theClass instancesRespondToSelector:sel_getUid("objectIn" + capitalizedKey + "atIndex:")] ||
[theClass instancesRespondToSelector:sel_getUid(key + "AtIndexes:")])
accessor = accessors[aKey] = [1, @selector(_setValueForKey:)];
}
if (!accessor)
{
if (class_getInstanceVariable(theClass, name = underscoreKey) ||
class_getInstanceVariable(theClass, name = "_" + isKey) ||
class_getInstanceVariable(theClass, name = aKey) ||
class_getInstanceVariable(theClass, name = isKey))
accessor = accessors[aKey] = [2, name];
else
accessor = accessors[aKey] = [];
}
}
switch (accessor[0])
{
case 0: return objj_msgSend(self, accessor[1]);
case 1: return objj_msgSend(self, accessor[1], aKey);
case 2: if ([theClass accessInstanceVariablesDirectly])
return self[accessor[1]];
}
return [self valueForUndefinedKey:aKey];