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/* -*- mode: objc; coding: utf-8 -*- */
/* Étoilisp/Mulklisp, a Common Lisp subset for the Étoilé runtime.
* Copyright (C) 2008 Matthias Andreas Benkard.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or (at
* your option) any later version.
*
* This program 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#import "MLKLispValue.h"
@class NSMutableDictionary, MLKSymbol, NSSet;
@interface MLKEnvironment : MLKLispValue
{
MLKEnvironment *_parent;
NSMutableDictionary *_bindings;
}
+(void) initialize;
-(MLKEnvironment *) init;
-(MLKEnvironment *) initWithParent:(MLKEnvironment *)parent;
-(MLKEnvironment *) initWithBindings:(NSDictionary *)bindings;
-(MLKEnvironment *) initWithParent:(MLKEnvironment *)parent bindings:(NSDictionary *)bindings;
-(MLKEnvironment *) parent;
-(NSSet *) bindings;
-(void) addBinding:(MLKSymbol *)symbol;
-(void) addBindings:(NSDictionary *)bindings;
-(void) addValue:(id)value forBinding:(MLKSymbol *)symbol;
-(void) setValue:(id)value forBinding:(MLKSymbol *)symbol;
-(id) valueForBinding:(MLKSymbol *)symbol;
-(MLKEnvironment *) environmentForBinding:(MLKSymbol *)symbol;
// Private methods.
-(void) setBinding:(MLKSymbol *)symbol to:(id)value inEnvironment:(MLKEnvironment *)env;
-(id) valueForBinding:(MLKSymbol *)symbol inEnvironment:(MLKEnvironment *)env;
-(BOOL) boundp:(MLKSymbol *)symbol;
-(void) makunbound:(MLKSymbol *)symbol;
-(void) dealloc;
@end
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