zeus.concepts.fn
Class ComparisonFn

java.lang.Object
  zeus.concepts.fn.ValueFunction
      zeus.concepts.fn.LogicalFn
          zeus.concepts.fn.ComparisonFn

public class ComparisonFn

extends LogicalFn

Field Summary

protected ValueFunction[]	args
(package private) static java.lang.String[]	comparators
(package private) static int	EQ
(package private) static int	GE
(package private) static int	GT
(package private) static int[]	illegal_operands
(package private) static int	LE
(package private) static int	LT
(package private) static int	NE
protected int	op

Fields inherited from class zeus.concepts.fn.LogicalFn

FALSE, TRUE, UNKNOWN

Fields inherited from class zeus.concepts.fn.ValueFunction

AND, ARITH, BOOL, COMP, CONS, CONSB, DATE, ELSE, FACT, FIELD, FUNC, ID, ID_MAX, ID_MIN, IMPLY, INT, IS_DETERMINATE, LAND, LNOT, LOR, LVAR, METH, METHOD_LIST, OR, PD_MAX, PD_MIN, precedence, REAL, TIME, TO_STRING, type, TYPE, VECT

Constructor Summary

ComparisonFn(ValueFunction lhs, ValueFunction rhs, java.lang.String op)

Method Summary

ValueFunction	duplicate(DuplicationTable table)
boolean	equals(java.lang.Object any)
int	evaluate()
ValueFunction	evaluationFn()
(package private) java.lang.Object	getArg(int position)
(package private) int	getOperator()
boolean	isDeterminate()
ValueFunction	mirror()
(package private) ValueFunction	normalize()
boolean	references(ValueFunction var)
ValueFunction	resolve(ResolutionContext c, Bindings b)
(package private) ValueFunction	simplify()
java.lang.String	toString()
java.util.Vector	variables()

Methods inherited from class zeus.concepts.fn.LogicalFn

baseID, unify

Methods inherited from class zeus.concepts.fn.ValueFunction

duplicate, getArg, getID, getPD, invokeMethod, resolve, unifiesWith

Methods inherited from class java.lang.Object

clone, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

EQ

static final int EQ

See Also:

Constant Field Values

NE

static final int NE

See Also:

Constant Field Values

LE

static final int LE

See Also:

Constant Field Values

GE

static final int GE

See Also:

Constant Field Values

LT

static final int LT

See Also:

Constant Field Values

GT

static final int GT

See Also:

Constant Field Values

comparators

static final java.lang.String[] comparators

illegal_operands

static final int[] illegal_operands

args

protected ValueFunction[] args

op

protected int op

Constructor Detail

ComparisonFn

public ComparisonFn(ValueFunction lhs,
                    ValueFunction rhs,
                    java.lang.String op)

Method Detail

mirror

public ValueFunction mirror()

Specified by:

mirror in class ValueFunction

toString

public java.lang.String toString()

getOperator

int getOperator()

simplify

ValueFunction simplify()

Overrides:

simplify in class ValueFunction

getArg

java.lang.Object getArg(int position)

Specified by:

getArg in class ValueFunction

references

public boolean references(ValueFunction var)

Specified by:

references in class ValueFunction

variables

public java.util.Vector variables()

Overrides:

variables in class ValueFunction

isDeterminate

public boolean isDeterminate()

Specified by:

isDeterminate in class ValueFunction

resolve

public ValueFunction resolve(ResolutionContext c,
                             Bindings b)

Overrides:

resolve in class ValueFunction

normalize

ValueFunction normalize()

Overrides:

normalize in class ValueFunction

evaluate

public int evaluate()

Specified by:

evaluate in class LogicalFn

evaluationFn

public ValueFunction evaluationFn()

Overrides:

evaluationFn in class ValueFunction

duplicate

public ValueFunction duplicate(DuplicationTable table)

Overrides:

duplicate in class ValueFunction

equals

public boolean equals(java.lang.Object any)