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/* Copyright (C) 2023 Free Software Foundation, Inc.
By: Benjamin Johnson
Date: 19-3-2023
This file is part of the GNUstep Library.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free
Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110 USA.
*/
#import "GSCSSolution.h"
#import "GSCSFloatComparator.h"
#import "GSFastEnumeration.h"
@implementation GSCSSolution
- (instancetype) init
{
self = [super init];
if (self)
{
ASSIGN(_resultsByVariable, [NSMapTable strongToStrongObjectsMapTable]);
}
return self;
}
- (void) setResult: (CGFloat)result forVariable: (GSCSVariable *)variable
{
NSNumber *encodedResult = [NSNumber numberWithFloat: result];
[_resultsByVariable setObject: encodedResult forKey: variable];
}
- (NSNumber *) resultForVariable: (GSCSVariable *)variable;
{
return [_resultsByVariable objectForKey: variable];
}
- (NSArray *) variables
{
NSMutableArray *variables = [NSMutableArray array];
NSEnumerator *resultVariables = [_resultsByVariable keyEnumerator];
FOR_IN(GSCSVariable *, variable, resultVariables)
[variables addObject: variable];
END_FOR_IN(resultVariables)
return variables;
}
- (BOOL) solution: (GSCSSolution *)solution
hasEqualResultForVariable: (GSCSVariable *)variable
{
NSNumber *lhsResult = [self resultForVariable: variable];
NSNumber *rhsResult = [solution resultForVariable: variable];
BOOL hasResultForBoth = lhsResult != nil && rhsResult != nil;
if (!hasResultForBoth)
{
return NO;
}
return [GSCSFloatComparator isApproxiatelyEqual: [lhsResult floatValue]
b: [rhsResult floatValue]];
}
- (BOOL) isEqualToCassowarySolverSolution: (GSCSSolution *)solution
{
if ([[self variables] count] != [[solution variables] count])
{
return NO;
}
NSArray *variables = [self variables];
FOR_IN(GSCSVariable *, variable, variables)
if (![self solution: solution hasEqualResultForVariable: variable])
{
return NO;
}
END_FOR_IN(variables)
return YES;
}
- (void) dealloc
{
RELEASE(_resultsByVariable);
[super dealloc];
}
@end
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