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GRMustacheIdentifierExpression.m
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GRMustacheIdentifierExpression.m
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// The MIT License
//
// Copyright (c) 2012 Gwendal Roué
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
#import "GRMustacheIdentifierExpression_private.h"
#import "GRMustacheContext_private.h"
#import "GRMustacheInvocation_private.h"
@interface GRMustacheIdentifierExpression()
@property (nonatomic, copy) NSString *identifier;
- (id)initWithIdentifier:(NSString *)identifier;
@end
@implementation GRMustacheIdentifierExpression
@synthesize identifier=_identifier;
+ (id)expressionWithIdentifier:(NSString *)identifier
{
return [[[self alloc] initWithIdentifier:identifier] autorelease];
}
- (id)initWithIdentifier:(NSString *)identifier
{
self = [super init];
if (self) {
self.identifier = identifier;
}
return self;
}
- (void)dealloc
{
self.identifier = nil;
[super dealloc];
}
- (BOOL)isEqual:(id<GRMustacheExpression>)expression
{
if (![expression isKindOfClass:[GRMustacheIdentifierExpression class]]) {
return NO;
}
return [_identifier isEqual:((GRMustacheIdentifierExpression *)expression).identifier];
}
#pragma mark - GRMustacheExpression
- (id)valueForContext:(GRMustacheContext *)context filterContext:(GRMustacheContext *)filterContext delegatingTemplate:(GRMustacheTemplate *)delegatingTemplate delegates:(NSArray *)delegates invocation:(GRMustacheInvocation **)outInvocation
{
id value = [context valueForKey:_identifier];
if (delegatingTemplate) {
NSAssert(outInvocation, @"WTF");
*outInvocation = [[[GRMustacheInvocation alloc] init] autorelease];
(*outInvocation).returnValue = value;
(*outInvocation).key = _identifier;
}
return value;
}
@end