com.singularsys.jep.configurableparser.matchers
Class StringTokenMatcher

java.lang.Object
  extended by com.singularsys.jep.configurableparser.matchers.RegExpTokenMatcher
      extended by com.singularsys.jep.configurableparser.matchers.StringTokenMatcher
All Implemented Interfaces:
TokenBuilder, TokenMatcher, java.io.Serializable

public class StringTokenMatcher
extends RegExpTokenMatcher

Base class for matching quoted strings. This class uses regular expressions but does not work well with escaped character inside the string. See StringTokenMatcher2 for a matcher which works with escape character like \' \" and \n.

See Also:
Serialized Form

Constructor Summary
StringTokenMatcher(java.util.regex.Pattern pattern, char delim)
          A StringTokenMatcher with a given regular expression pattern.
 
Method Summary
 Token buildToken(java.lang.String s)
          Builds a token following a successful match.
static StringTokenMatcher doubleQuoteStringMatcher()
          Factory for matching single line double quoted strings.
 void init(Jep j)
          Initialize the matcher when the Jep instance is known.
 Token match(java.lang.String s)
          Attempts to match the start of the string.
static StringTokenMatcher singleQuoteStringMatcher()
          Factory for matching single line single quoted strings.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

StringTokenMatcher

public StringTokenMatcher(java.util.regex.Pattern pattern,
                          char delim)
A StringTokenMatcher with a given regular expression pattern.

Parameters:
pattern - regular expression pattern to use
delim - the delimiter character marking start and end of the string.
Method Detail

match

public Token match(java.lang.String s)
Description copied from class: RegExpTokenMatcher
Attempts to match the start of the string.

Specified by:
match in interface TokenMatcher
Overrides:
match in class RegExpTokenMatcher
Parameters:
s - the string to match against
Returns:
if successful returns the corresponding token, return null if failed to match

doubleQuoteStringMatcher

public static StringTokenMatcher doubleQuoteStringMatcher()
Factory for matching single line double quoted strings.


singleQuoteStringMatcher

public static StringTokenMatcher singleQuoteStringMatcher()
Factory for matching single line single quoted strings.


buildToken

public Token buildToken(java.lang.String s)
Description copied from class: RegExpTokenMatcher
Builds a token following a successful match. Note new objects should be created each time as error reporting information is later attached to tokens.

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.

init

public void init(Jep j)
Description copied from interface: TokenMatcher
Initialize the matcher when the Jep instance is known.



Copyright © 2010 Singular Systems http://www.singularsys.com/jep