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90 lines
2.3 KiB
Plaintext
90 lines
2.3 KiB
Plaintext
/*
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* _CPKeyPathExpression.j
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*
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* Portions based on NSExpression_keypath.m in Cocotron (http://www.cocotron.org/)
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* Copyright (c) 2006-2007 Christopher J. W. Lloyd
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*
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* Created by cacaodev.
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* Copyright 2010.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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@import "CPKeyValueCoding.j"
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@import "CPString.j"
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@import "_CPExpression.j"
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@import "_CPFunctionExpression.j"
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@import "_CPConstantValueExpression.j"
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@implementation _CPKeyPathExpression : _CPFunctionExpression
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{
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}
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- (id)initWithKeyPath:(CPString)keyPath
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{
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return [self initWithOperand:[CPExpression expressionForEvaluatedObject] andKeyPath:keyPath];
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}
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- (id)initWithOperand:(CPExpression)operand andKeyPath:(CPString)keyPath
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{
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var arg = [CPExpression expressionForConstantValue:keyPath];
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// Cocoa: if it's a direct path selector use valueForKey:
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self = [super initWithTarget:operand selector:@selector(valueForKeyPath:) arguments:[arg] type:CPKeyPathExpressionType];
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return self;
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}
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- (BOOL)isEqual:(id)object
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{
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if (object === self)
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return YES;
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if (object == nil || object.isa !== self.isa || ![[object keyPath] isEqualToString:[self keyPath]])
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return NO;
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return YES;
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}
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- (CPExpression)pathExpression
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{
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return [[self arguments] objectAtIndex:0];
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}
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- (CPString)keyPath
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{
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return [[self pathExpression] keyPath];
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}
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- (CPString)description
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{
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var result = "";
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if ([_operand expressionType] != CPEvaluatedObjectExpressionType)
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result += [_operand description] + ".";
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result += [self keyPath];
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return result;
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}
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@end
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@implementation _CPConstantValueExpression (KeyPath)
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- (CPString)keyPath
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{
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return [self constantValue];
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}
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@end
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