ubc.cs.JLog.Builtins
Class jCallN

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.jUnaryBuiltinPredicate
                      extended by ubc.cs.JLog.Builtins.jCall
                          extended by ubc.cs.JLog.Builtins.jCallN
All Implemented Interfaces:
iType, iUnifiable, iConsultable, iName, iNameArity, iTerm, iValue

public class jCallN
extends jCall

A specialized version of jCall that handles cases of arity >= 2. Its term is a jCompoundTerm where element 0 has the predicate to invoke, and the remaining elements are added to the element 0 predicate to increase its arity.

Author:
Glendon Holst

Field Summary
 
Fields inherited from class ubc.cs.JLog.Terms.jUnaryBuiltinPredicate
rhs
 
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
jCallN(jCompoundTerm c)
           
 
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  jUnaryBuiltinPredicate duplicate(jTerm t)
           
 java.lang.String toString(boolean usename)
          Produces a string identifying this term, suitable for display to the console.
 
Methods inherited from class ubc.cs.JLog.Builtins.jCall
getName
 
Methods inherited from class ubc.cs.JLog.Terms.jUnaryBuiltinPredicate
compareArguments, consult, consultReset, copy, duplicate, enumerateVariables, equivalenceArguments, getArguments, getArity, getRHS, isConsultNeeded, prove, registerUnboundVariables, registerVariables, 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
 

Constructor Detail

jCallN

public jCallN(jCompoundTerm c)
Method Detail

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 jCall
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 jCall
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 jUnaryBuiltinPredicate duplicate(jTerm t)
Overrides:
duplicate in class jCall

toString

public java.lang.String toString(boolean usename)
Description copied from class: jTerm
Produces a string identifying this term, suitable for display to the console. param usename determines whether to display variables by name or identity. false is the default for displaying the term, true for displaying this term in a user query.

Specified by:
toString in interface iTerm
Overrides:
toString in class jUnaryBuiltinPredicate
Returns:
String which is a textual representation of this term.