Package com.singularsys.jep.configurableparser.matchers

Class SingleArgFunctionMatcher

java.lang.Object

com.singularsys.jep.configurableparser.matchers.SingleArgFunctionMatcher

All Implemented Interfaces:

GrammarMatcher, Serializable

public class SingleArgFunctionMatcher
extends Object
implements GrammarMatcher

A matcher for functions like "sin 30" without brackets and a single simple argument.

Since:

3.5

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
SingleArgFunctionMatcher(Token open)	Constructor

Method Summary

Modifier and Type	Method	Description
void	init(Jep jep)	Delayed initialisation, this method is called whenever components of the jep instance are changed.
Node	match(Lookahead2Iterator<Token> it, GrammarParser parser)	Test whether the input matches this pattern.

Methods inherited from class java.lang.Object

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

Constructor Details

SingleArgFunctionMatcher

public SingleArgFunctionMatcher(Token open)

Constructor

Parameters:

open - token for normal functions like "sin(x)", if the open token is detected then match will return null

Method Details

match

public Node match(Lookahead2Iterator<Token> it,
 GrammarParser parser)
           throws ParseException

Description copied from interface: GrammarMatcher

Test whether the input matches this pattern.

Specified by:

match in interface GrammarMatcher

Parameters:

it - An iterator inspecting the input

parser - the parser to use when evaluating sub expressions

Returns:

if matched returns a node representing the content, return null is does not match

Throws:

ParseException - if there is a syntactical error in the input.

init

public void init(Jep jep)

Description copied from interface: GrammarMatcher

Delayed initialisation, this method is called whenever components of the jep instance are changed.

Specified by:

init in interface GrammarMatcher

Parameters:

jep - the current jep instance.