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## com.singularsys.jep.configurableparser.matchers
Class SymbolTokenMatcher

    java.lang.Object
      com.singularsys.jep.configurableparser.matchers.SymbolTokenMatcher

All Implemented Interfaces:
  TokenMatcher, java.io.Serializable

    public class SymbolTokenMatcher

extends java.lang.Object
implements TokenMatcher

Matches a fixed set of symbols, each represented by a SymbolToken. Each SymbolToken behaves like an singleton, only one instance is created and this is returned by the match method.

See Also:
  Serialized Form

Constructor Summary
`SymbolTokenMatcher()`

Method Summary
`boolean` | `add(SymbolToken t)` Adds a new SymbolToken to be matched.
`SymbolToken` | `getSymbolToken(java.lang.String s)` Gets the root SymbolToken for this string.
`void` | `init(Jep j)` Initialize the matcher when the Jep instance is known.
`Token` | `match(java.lang.String s)` Match the start of the string.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### SymbolTokenMatcher

    public SymbolTokenMatcher()

Method Detail

### match

    public Token match(java.lang.String s)

  Match the start of the string.

  Specified by:
    `match` in interface `TokenMatcher`
  Parameters:
    `s` - a string to be matched
  Returns:
    a clone of the matching symbol

### add

    public boolean add(SymbolToken t)

  Adds a new SymbolToken to be matched.

  Parameters:
    `t` - a SymbolToken
  Returns:
    true (as specified by Collection.add)

### init

    public void init(Jep j)

  Description copied from interface: `TokenMatcher`
  Initialize the matcher when the Jep instance is known.

  Specified by:
    `init` in interface `TokenMatcher`

### getSymbolToken

    public SymbolToken getSymbolToken(java.lang.String s)

  Gets the root SymbolToken for this string. Unlike the match method which returns a clone of the token, this returns the base symbol.

  Parameters:
    `s` - a string to be matched exactly
  Returns:
    the symbol token or null is no such symbol

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Copyright © 2008 Singular Systems http://www.singularsys.com/jep