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Implemented Evaluation

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Kim Wittenburg
2014-09-07 16:45:31 +02:00
parent 8df8317413
commit 21bfe221ba
13 changed files with 593 additions and 96 deletions
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14
MathPad/MPExpressionEvaluator.h
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@@ -8,23 +8,25 @@
#import <Foundation/Foundation.h>
#import "MPExpression.h"
#import "MPElementParser.h"
@class MPExpressionEvaluator, MPExpression, MPParsedElement;
@interface MPExpressionEvaluator : NSObject
// Do not instanciate yourself, use evaluator property of MPExpression instead
- (instancetype)initWithExpression:(MPExpression *)expression;
@property (readonly, nonatomic, strong) MPExpression *expression;
#pragma mark Lexing
- (MPParsedElement *)structuredRepresentationOfElementAtIndex:(NSUInteger)index;
@property (readonly, nonatomic, weak) MPExpression *expression;
#pragma mark Evaluating Expressions
@property (readonly, nonatomic, strong) NSDictionary *variableBindings;
- (void)bindValue:(double)value toVariableName:(NSString *)name;
- (void)bindValue:(NSDecimalNumber *)value toVariableName:(NSString *)name;
- (void)unbindVariableName:(NSString *)name;
- (double)evaluateWithError:(NSError *__autoreleasing *)error;
- (NSDecimalNumber *)evaluateWithError:(MPParseError *__autoreleasing *)error;
- (NSDecimalNumber *)evaluateVariableDefinition:(BOOL)flag error:(MPParseError *__autoreleasing *)error;
@property (readonly, nonatomic, strong) NSString *definedVariable;
@end