net.sourceforge.plantuml.evalex

Class AbstractUnaryOperator

java.lang.Object

net.sourceforge.plantuml.evalex.AbstractLazyOperator

net.sourceforge.plantuml.evalex.AbstractOperator

net.sourceforge.plantuml.evalex.AbstractUnaryOperator

All Implemented Interfaces:

LazyOperator, Operator

Direct Known Subclasses:

Expression.UnaryOperator

public abstract class AbstractUnaryOperator
extends AbstractOperator

Abstract implementation of an unary operator.

This abstract implementation implements eval so that it forwards its first parameter to evalUnary.

Field Summary

Fields inherited from class net.sourceforge.plantuml.evalex.AbstractLazyOperator

booleanOperator, leftAssoc, oper, precedence

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	AbstractUnaryOperator(java.lang.String oper, int precedence, boolean leftAssoc) Creates a new operator.

Method Summary

Modifier and Type	Method and Description
Expression.LazyNumber	eval(Expression.LazyNumber v1, Expression.LazyNumber v2) Implementation for this operator.
java.lang.Number	eval(java.lang.Number v1, java.lang.Number v2) Implementation for this operator.
abstract java.lang.Number	evalUnary(java.lang.Number v1) Implementation of this unary operator.

Methods inherited from class net.sourceforge.plantuml.evalex.AbstractLazyOperator

getOper, getPrecedence, isBooleanOperator, isLeftAssoc

Methods inherited from class java.lang.Object

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

Methods inherited from interface net.sourceforge.plantuml.evalex.LazyOperator

getOper, getPrecedence, isBooleanOperator, isLeftAssoc

Constructor Detail

AbstractUnaryOperator

protected AbstractUnaryOperator(java.lang.String oper,
                                int precedence,
                                boolean leftAssoc)

Creates a new operator.

Parameters:

oper - The operator name (pattern).

precedence - The operators precedence.

leftAssoc - true if the operator is left associative, else false.

Method Detail

eval

public Expression.LazyNumber eval(Expression.LazyNumber v1,
                                  Expression.LazyNumber v2)

Description copied from interface: LazyOperator

Implementation for this operator.

Specified by:

eval in interface LazyOperator

Overrides:

eval in class AbstractOperator

Parameters:

v1 - Operand 1.

v2 - Operand 2.

Returns:

The result of the operation.

eval

public java.lang.Number eval(java.lang.Number v1,
                             java.lang.Number v2)

Description copied from interface: Operator

Implementation for this operator.

Parameters:

v1 - Operand 1.

v2 - Operand 2.

Returns:

The result of the operation.

evalUnary

public abstract java.lang.Number evalUnary(java.lang.Number v1)

Implementation of this unary operator.

Parameters:

v1 - The parameter.

Returns:

The result of the operation.