net.sf.gridarta.textedit.textarea.tokenmarker

Class KeywordMap

java.lang.Object

net.sf.gridarta.textedit.textarea.tokenmarker.KeywordMap

public class KeywordMap
extends java.lang.Object

Maps (parts of) Segments to byte values. It allows lookups of text sub-strings without the overhead of creating new string objects.

The keys are stored in a tree consisting of Nodes. Each node represents one character of the key string. The root node rootNode represents the first character.

Constructor Summary

Constructors

Constructor and Description
KeywordMap(boolean ignoreCase) Creates a new instance.

Method Summary

Modifier and Type	Method and Description
void	add(java.lang.CharSequence keyword, byte id) Adds a key-value mapping.
byte	lookup(javax.swing.text.Segment text, int offset, int length) Looks up a key.

Methods inherited from class java.lang.Object

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

Constructor Detail

KeywordMap

public KeywordMap(boolean ignoreCase)

Creates a new instance.

Parameters:

ignoreCase - if set, ignore match keys case-insensitive

Method Detail

lookup

public byte lookup(javax.swing.text.Segment text,
                   int offset,
                   int length)

Looks up a key.

Parameters:

text - the text segment to look up

offset - the starting offset of the key within the text segment

length - the length of the key

Returns:

the id registered for the key, or Token.NULL if no key matches

add

public void add(java.lang.CharSequence keyword,
                byte id)

Adds a key-value mapping.

Parameters:

keyword - the key to add

id - the value to map to