ubc.cs.JLog.Builtins
Class jAdd

java.lang.Object
  ubc.cs.JLog.Foundation.jType
      ubc.cs.JLog.Terms.jTerm
          ubc.cs.JLog.Terms.iPredicate
              ubc.cs.JLog.Terms.jBuiltinPredicate
                  ubc.cs.JLog.Terms.jBinaryBuiltinPredicate
                      ubc.cs.JLog.Builtins.jAdd

All Implemented Interfaces:

iArithmetic, iType, iUnifiable, iConsultable, iName, iNameArity, iTerm, iValue

public class jAdd
extends jBinaryBuiltinPredicate

Field Summary

Fields inherited from class ubc.cs.JLog.Terms.jBinaryBuiltinPredicate

lhs, rhs

Fields inherited from class ubc.cs.JLog.Foundation.jType

type

Fields inherited from interface ubc.cs.JLog.Builtins.iArithmetic

MAX

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

jAdd(jTerm l, jTerm r)

Method Summary

void	addGoals(jGoal g, iGoalStack goals) Arithmetics are intended as expressions for is, if used a predicate they fail.
void	addGoals(jGoal g, jVariable[] vars, iGoalStack goals) Arithmetics are intended as expressions for is, if used a predicate they fail.
protected jBinaryBuiltinPredicate	duplicate(jTerm l, jTerm r)
String	getName() Returns the name of this instance.
int	getPriority() Return priority value 0..MAX for operator precedence.
jTerm	getValue() Return the value of this object after.
protected int	operatorInt(int l, int r) Perform the integer operations specified by this instance on the two given integers, and return the integer result.
protected float	operatorReal(float l, float r) Perform the float operations specified by this instance on the two given floats, and return the float result.
String	toString(boolean usename) Produces a string identifying this term, suitable for display to the console.

Methods inherited from class ubc.cs.JLog.Terms.jBinaryBuiltinPredicate

compareArguments, consult, consultReset, copy, duplicate, enumerateVariables, equivalenceArguments, getArguments, getArity, getLHS, 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, 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

jAdd

public jAdd(jTerm l,
            jTerm r)

Method Detail

getName

public 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.

duplicate

protected jBinaryBuiltinPredicate duplicate(jTerm l,
                                            jTerm r)

Specified by:

duplicate in class jBinaryBuiltinPredicate

operatorInt

protected int operatorInt(int l,
                          int r)

Perform the integer operations specified by this instance on the two given integers, and return the integer result.

Parameters:

l - The left operand.

r - The right operand.

Returns:

The result of l op r where op is specified by this instance.

operatorReal

protected float operatorReal(float l,
                             float r)

Perform the float operations specified by this instance on the two given floats, and return the float result.

Parameters:

l - The left operand.

r - The right operand.

Returns:

The result of l op r where op is specified by this instance.

getPriority

public int getPriority()

Description copied from interface: iArithmetic

Return priority value 0..MAX for operator precedence. Non-operator terms have max priority.

Returns:

the priority of this operator (lower priority number is higher precedence).

getValue

public jTerm getValue()

Description copied from interface: iValue

Return the value of this object after.

Specified by:

getValue in interface iTerm

Specified by:

getValue in interface iValue

Overrides:

getValue in class jTerm

Returns:

jTerm which represents the evaluated value of this instance, or the value bound to this instance, in the case of a variable.

addGoals

public void addGoals(jGoal g,
                     jVariable[] vars,
                     iGoalStack goals)

Arithmetics are intended as expressions for is, if used a predicate they fail.

Overrides:

addGoals in class jBinaryBuiltinPredicate

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)

Arithmetics are intended as expressions for is, if used a predicate they fail.

Overrides:

addGoals in class jBinaryBuiltinPredicate

Parameters:

g - The super-goal jGoal for the sub-goal that this function will add.

goals - The iGoalStack to add the goal to.

toString

public 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 jBinaryBuiltinPredicate

Returns:

String which is a textual representation of this term.