Package edu.wisc.game.parser
Class Expression.NegationExpression
- java.lang.Object
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- edu.wisc.game.parser.Expression.NegationExpression
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- All Implemented Interfaces:
Expression
,Expression.ArithmeticExpression
- Enclosing interface:
- Expression
public static class Expression.NegationExpression extends Object implements Expression.ArithmeticExpression
!E evaluates to [1] if E is an empty set, or to [] otherwise
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Nested Class Summary
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Nested classes/interfaces inherited from interface edu.wisc.game.parser.Expression
Expression.AdditiveExpression, Expression.ArithmeticExpression, Expression.BracketList, Expression.ColonExpression, Expression.EqualityExpression, Expression.ExList, Expression.Id, Expression.MultiplicativeExpression, Expression.NegationExpression, Expression.Num, Expression.ParenList, Expression.QualifiedId, Expression.RangeExpression, Expression.SerialExpression, Expression.Star
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Field Summary
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Fields inherited from interface edu.wisc.game.parser.Expression
STAR
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description HashSet<Integer>
evalSet(HashMap<String,HashSet<Integer>> hh)
Evaluates this expression for the given values of the variables involved.HashSet<String>
listAllVars()
Lists all variable names used in this expressionString
toSrc()
String
toString()
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Method Detail
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toSrc
public String toSrc()
- Specified by:
toSrc
in interfaceExpression
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listAllVars
public HashSet<String> listAllVars()
Lists all variable names used in this expression- Specified by:
listAllVars
in interfaceExpression.ArithmeticExpression
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evalSet
public HashSet<Integer> evalSet(HashMap<String,HashSet<Integer>> hh)
Description copied from interface:Expression.ArithmeticExpression
Evaluates this expression for the given values of the variables involved. Can be used when the arguments can have multiple values.- Specified by:
evalSet
in interfaceExpression.ArithmeticExpression
- Parameters:
hh
- The hash map that contains for each variable the possible set of its values.- Returns:
- the set of the possible values of the expression, or an empty set if the expression uses a variable whose value is not in h
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