Package com.singularsys.jep.configurableparser.matchers

Class IdentifierTokenMatcher

java.lang.Object

com.singularsys.jep.configurableparser.matchers.RegExpTokenMatcher

com.singularsys.jep.configurableparser.matchers.IdentifierTokenMatcher

All Implemented Interfaces:

TokenBuilder, TokenMatcher, Serializable

public class IdentifierTokenMatcher
extends RegExpTokenMatcher

Matches identifiers: variables or function names.

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
IdentifierTokenMatcher(Pattern pattern)
IdentifierTokenMatcher(String regex)	Construct and identifier matcher.

Method Summary

Modifier and Type	Method	Description
static IdentifierTokenMatcher	basicIdentifierMatcher()	Matches identifiers which start with a letter or underscore and are followed by 0 or more letters digits or underscores.
Token	buildToken(String s)	Create the token, if the name matches a function name return a FunctionToken otherwise return an IdentifierToken.
static IdentifierTokenMatcher	dottedIdentifierMatcher()	Matches identifiers which start with a letter or underscore and are followed by 0 or more letters digits or underscores or .
void	init(Jep j)	Initialize the matcher when the Jep instance is known.

Methods inherited from class com.singularsys.jep.configurableparser.matchers.RegExpTokenMatcher

match

Methods inherited from class java.lang.Object

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

Constructor Details

IdentifierTokenMatcher

public IdentifierTokenMatcher(Pattern pattern)

IdentifierTokenMatcher

public IdentifierTokenMatcher(String regex)

Construct and identifier matcher.

Parameters:

regex - a regular expression specifying the allowed identifier names.

See Also:

• Pattern

Method Details

buildToken

public Token buildToken(String s)

Create the token, if the name matches a function name return a FunctionToken otherwise return an IdentifierToken.

Specified by:

buildToken in interface TokenBuilder

Specified by:

buildToken in class RegExpTokenMatcher

Parameters:

s - String representing the completed matched token

Returns:

the appropriate type of token.

basicIdentifierMatcher

public static IdentifierTokenMatcher basicIdentifierMatcher()

Matches identifiers which start with a letter or underscore and are followed by 0 or more letters digits or underscores. Correctly spelled version

Returns:

the matcher

Since:

3.5

dottedIdentifierMatcher

public static IdentifierTokenMatcher dottedIdentifierMatcher()

Matches identifiers which start with a letter or underscore and are followed by 0 or more letters digits or underscores or . characters. Correctly spelled version

Returns:

the matcher

Since:

3.5

init

public void init(Jep j)

Description copied from interface: TokenMatcher

Initialize the matcher when the Jep instance is known.

Parameters:

j - Jep instance