Package com.ezylang.evalex.config

Class MapBasedOperatorDictionary

java.lang.Object

com.ezylang.evalex.config.MapBasedOperatorDictionary

All Implemented Interfaces:

OperatorDictionaryIfc

public class MapBasedOperatorDictionary
extends java.lang.Object
implements OperatorDictionaryIfc

A default case-insensitive implementation of the operator dictionary that uses a local Map.Entry<String,OperatorIfc> for storage.

Constructor Summary

Constructors

Constructor	Description
MapBasedOperatorDictionary()

Method Summary

Modifier and Type	Method	Description
void	addOperator(java.lang.String operatorString, OperatorIfc operator)	Allows to add an operator to the dictionary.
OperatorIfc	getInfixOperator(java.lang.String operatorString)	Get the operator definition for an infix operator name.
OperatorIfc	getPostfixOperator(java.lang.String operatorString)	Get the operator definition for a postfix operator name.
OperatorIfc	getPrefixOperator(java.lang.String operatorString)	Get the operator definition for a prefix operator name.
static OperatorDictionaryIfc	ofOperators(java.util.Map.Entry<java.lang.String,OperatorIfc>... operators)	Creates a new operator dictionary with the specified list of operators.

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.ezylang.evalex.config.OperatorDictionaryIfc

hasInfixOperator, hasPostfixOperator, hasPrefixOperator

Constructor Detail

MapBasedOperatorDictionary

public MapBasedOperatorDictionary()

Method Detail

ofOperators

public static OperatorDictionaryIfc ofOperators(java.util.Map.Entry<java.lang.String,OperatorIfc>... operators)

Creates a new operator dictionary with the specified list of operators.

Parameters:

operators - variable number of arguments that specify the operator names and definitions that will initially be added.

Returns:

A newly created operator dictionary with the specified operators.

addOperator

public void addOperator(java.lang.String operatorString,
                        OperatorIfc operator)

Description copied from interface: OperatorDictionaryIfc

Allows to add an operator to the dictionary. Implementation is optional, if you have a fixed set of operators, this method can throw an exception.

Specified by:

addOperator in interface OperatorDictionaryIfc

Parameters:

operatorString - The operator name.

operator - The operator implementation.

getPrefixOperator

public OperatorIfc getPrefixOperator(java.lang.String operatorString)

Description copied from interface: OperatorDictionaryIfc

Get the operator definition for a prefix operator name.

Specified by:

getPrefixOperator in interface OperatorDictionaryIfc

Parameters:

operatorString - The name of the operator.

Returns:

The operator definition or null if no operator was found.

getPostfixOperator

public OperatorIfc getPostfixOperator(java.lang.String operatorString)

Description copied from interface: OperatorDictionaryIfc

Get the operator definition for a postfix operator name.

Specified by:

getPostfixOperator in interface OperatorDictionaryIfc

Parameters:

operatorString - The name of the operator.

Returns:

The operator definition or null if no operator was found.

getInfixOperator

public OperatorIfc getInfixOperator(java.lang.String operatorString)

Description copied from interface: OperatorDictionaryIfc

Get the operator definition for an infix operator name.

Specified by:

getInfixOperator in interface OperatorDictionaryIfc

Parameters:

operatorString - The name of the operator.

Returns:

The operator definition or null if no operator was found.