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, java.io.Serializable

public class IdentifierTokenMatcher
extends RegExpTokenMatcher

Matches identifiers: variables or function names.

See Also:

Serialized Form

Constructor Summary

IdentifierTokenMatcher(java.util.regex.Pattern pattern)

IdentifierTokenMatcher(java.lang.String regex)
Construct and identifier matcher.

Method Summary

static IdentifierTokenMatcher	basicIndetifierMatcher() Matches identifiers which start with a letter or underscore and are followed by 0 or more letters digits or underscores.
Token	buildToken(java.lang.String s) Create the token, if the name matches a function name return a FunctionToken otherwise return an IdentifierToken.
static IdentifierTokenMatcher	dottedIndetifierMatcher() Matches identifiers which start with a letter or underscore and are followed by 0 or more letters digits or underscores or . characters.
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 Detail

IdentifierTokenMatcher

public IdentifierTokenMatcher(java.util.regex.Pattern pattern)

IdentifierTokenMatcher

public IdentifierTokenMatcher(java.lang.String regex)

Construct and identifier matcher.

Parameters:

regex - a regular expression specifying the allowed identifier names.

See Also:

Pattern

Method Detail

buildToken

public Token buildToken(java.lang.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.

basicIndetifierMatcher

public static IdentifierTokenMatcher basicIndetifierMatcher()

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

dottedIndetifierMatcher

public static IdentifierTokenMatcher dottedIndetifierMatcher()

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

init

public void init(Jep j)

Description copied from interface: TokenMatcher

Initialize the matcher when the Jep instance is known.