ubc.cs.JLog.Builtins
Class jCompare

java.lang.Object
  extended by ubc.cs.JLog.Foundation.jType
      extended by ubc.cs.JLog.Terms.jTerm
          extended by ubc.cs.JLog.Terms.iPredicate
              extended by ubc.cs.JLog.Terms.jBuiltinPredicate
                  extended by ubc.cs.JLog.Terms.jTrinaryBuiltinPredicate
                      extended by ubc.cs.JLog.Builtins.jCompare
All Implemented Interfaces:
iType, iUnifiable, iConsultable, iName, iNameArity, iTerm, iValue

public class jCompare
extends jTrinaryBuiltinPredicate


Field Summary
protected  boolean var_equal
           
 
Fields inherited from class ubc.cs.JLog.Terms.jTrinaryBuiltinPredicate
term1, term2, term3
 
Fields inherited from class ubc.cs.JLog.Foundation.jType
type
 
Fields inherited from interface ubc.cs.JLog.Terms.iTerm
EQUAL, GREATER_THAN, LESS_THAN
 
Fields inherited from interface ubc.cs.JLog.Foundation.iType
TYPE_ARITHMETIC, TYPE_ATOM, TYPE_BUILTINPREDICATE, TYPE_COMMAND, TYPE_COMPARE, TYPE_COMPOUND, TYPE_CONS, TYPE_IF, TYPE_INTEGER, TYPE_LIST, TYPE_NULLLIST, TYPE_NUMERICCOMPARE, TYPE_OBJECT, TYPE_OPERATOR, TYPE_OR, TYPE_ORPREDICATE, TYPE_PREDICATE, TYPE_PREDICATETERMS, TYPE_REAL, TYPE_TYPE, TYPE_UNARYARITHMETIC, TYPE_UNARYOPERATOR, TYPE_UNDEFINED, TYPE_VARIABLE
 
Constructor Summary
jCompare(jTerm t1, jTerm t2, jTerm t3)
           
jCompare(jTerm t1, jTerm t2, jTerm t3, boolean ve)
           
 
Method Summary
 void addGoals(jGoal g, iGoalStack goals)
          Adds goal to prove this predicate onto goal stack.
 void addGoals(jGoal g, jVariable[] vars, iGoalStack goals)
          Adds goal to prove this predicate onto goal stack.
protected  jTrinaryBuiltinPredicate duplicate(jTerm t1, jTerm t2, jTerm t3)
           
 java.lang.String getName()
          Returns the name of this instance.
 boolean prove(jCompareGoal cg)
           
 
Methods inherited from class ubc.cs.JLog.Terms.jTrinaryBuiltinPredicate
compareArguments, consult, consultReset, copy, duplicate, enumerateVariables, equivalenceArguments, getArguments, getArity, getTerm1, getTerm2, getTerm3, isConsultNeeded, prove, registerUnboundVariables, registerVariables, toString, unifyArguments
 
Methods inherited from class ubc.cs.JLog.Terms.jBuiltinPredicate
equivalence, unify
 
Methods inherited from class ubc.cs.JLog.Terms.iPredicate
compare
 
Methods inherited from class ubc.cs.JLog.Terms.jTerm
compare, copy, getTerm, getValue, requiresCompleteVariableState, toString
 
Methods inherited from class ubc.cs.JLog.Foundation.jType
getType, objectToString
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Field Detail

var_equal

protected boolean var_equal
Constructor Detail

jCompare

public jCompare(jTerm t1,
                jTerm t2,
                jTerm t3)

jCompare

public jCompare(jTerm t1,
                jTerm t2,
                jTerm t3,
                boolean ve)
Method Detail

getName

public java.lang.String getName()
Description copied from interface: iName
Returns the name of this instance.

Specified by:
getName in interface iName
Specified by:
getName in interface iTerm
Overrides:
getName in class jTerm
Returns:
String containing name of this instance.

prove

public boolean prove(jCompareGoal cg)

addGoals

public void addGoals(jGoal g,
                     jVariable[] vars,
                     iGoalStack goals)
Description copied from class: iPredicate
Adds goal to prove this predicate onto goal stack. This version is called when the original predicate must duplicate itself (or its arguments). Add goals in the reverse order you want them evaluated.

Overrides:
addGoals in class jTrinaryBuiltinPredicate
Parameters:
g - The super-goal jGoal for the sub-goal that this function will add.
vars - The vector of duplicate variables produced from the previous call to registerVariables. Needed for call to duplicate.
goals - The iGoalStack to add the goal to.

addGoals

public void addGoals(jGoal g,
                     iGoalStack goals)
Description copied from class: iPredicate
Adds goal to prove this predicate onto goal stack. This version is called when the original predicate is already duplicated (usually as part of an argument for another predicate). Add goals in the reverse order you want them evaluated.

Overrides:
addGoals in class jTrinaryBuiltinPredicate
Parameters:
g - The super-goal jGoal for the sub-goal that this function will add.
goals - The iGoalStack to add the goal to.

duplicate

protected jTrinaryBuiltinPredicate duplicate(jTerm t1,
                                             jTerm t2,
                                             jTerm t3)
Specified by:
duplicate in class jTrinaryBuiltinPredicate