to.etc.syntaxer

Class KeywordMap

java.lang.Object

to.etc.syntaxer.KeywordMap

public class KeywordMap
extends Object

A KeywordMap is similar to a hashtable in that it maps keys to values. However, the `keys' are Swing segments. This allows lookups of text substrings without the overhead of creating a new string object.

Version:

$Id: KeywordMap.java,v 1.8 2004/05/29 01:55:26 spestov Exp $

Author:

Slava Pestov, Mike Dillon

Constructor Summary

Constructors

Constructor and Description
KeywordMap(boolean ignoreCase) Creates a new KeywordMap.
KeywordMap(boolean ignoreCase, int mapLength) Creates a new KeywordMap.

Method Summary

Modifier and Type	Method and Description
void	add(char[] keyword, byte id) Adds a key-value mapping.
void	add(KeywordMap map) Adds the content of another keyword map to this one.
void	add(String keyword, byte id) Adds a key-value mapping.
boolean	getIgnoreCase() Returns true if the keyword map is set to be case insensitive, false otherwise.
String[]	getKeywords() Returns an array containing all keywords in this keyword map.
String	getNonAlphaNumericChars() Returns all non-alphanumeric characters that appear in the keywords of this keyword map.
protected int	getSegmentMapKey(Segment s, int off, int len)
byte	lookup(Segment text, int offset, int length) Looks up a key.
void	setIgnoreCase(boolean ignoreCase) Sets if the keyword map should be case insensitive.

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 KeywordMap.

Parameters:

ignoreCase - True if keys are case insensitive

KeywordMap

public KeywordMap(boolean ignoreCase,
                  int mapLength)

Creates a new KeywordMap.

Parameters:

ignoreCase - True if the keys are case insensitive

mapLength - The number of `buckets' to create. A value of 52 will give good performance for most maps.

Method Detail

lookup

public byte lookup(Segment text,
                   int offset,
                   int length)

Looks up a key.

Parameters:

text - The text segment

offset - The offset of the substring within the text segment

length - The length of the substring

add

public void add(String keyword,
                byte id)

Adds a key-value mapping.

Parameters:

keyword - The key

id - The value

add

public void add(char[] keyword,
                byte id)

Adds a key-value mapping.

Parameters:

keyword - The key

id - The value

Since:

jEdit 4.2pre3

getNonAlphaNumericChars

public String getNonAlphaNumericChars()

Returns all non-alphanumeric characters that appear in the keywords of this keyword map.

Since:

jEdit 4.0pre3

getKeywords

public String[] getKeywords()

Returns an array containing all keywords in this keyword map.

Since:

jEdit 4.0pre3

getIgnoreCase

public boolean getIgnoreCase()

Returns true if the keyword map is set to be case insensitive, false otherwise.

setIgnoreCase

public void setIgnoreCase(boolean ignoreCase)

Sets if the keyword map should be case insensitive.

Parameters:

ignoreCase - True if the keyword map should be case insensitive, false otherwise

add

public void add(KeywordMap map)

Adds the content of another keyword map to this one.

Since:

jEdit 4.2pre3

getSegmentMapKey

protected int getSegmentMapKey(Segment s,
                               int off,
                               int len)