org.fife.ui.rsyntaxtextarea.DefaultTokenFactory Maven / Gradle / Ivy
/*
* 10/28/2004
*
* DefaultTokenFactory.java - Default token factory.
*
* This library is distributed under a modified BSD license. See the included
* RSyntaxTextArea.License.txt file for details.
*/
package org.fife.ui.rsyntaxtextarea;
import javax.swing.text.Segment;
/**
* This class generates tokens for a {@link TokenMaker}. This class is here
* because it reuses tokens when they aren't needed anymore to prevent
* This class doesn't actually create new tokens every time
* createToken is called. Instead, it internally keeps a stack of
* available already-created tokens. When more tokens are needed to properly
* display a line, more tokens are added to the available stack. This saves
* from needless repetitive memory allocation. However, it makes it IMPERATIVE
* that users call resetTokenList when creating a new token list so
* that the token maker can keep an accurate list of available tokens.
*
* NOTE: This class should only be used by {@link TokenMaker}; nobody else
* needs it!
*
* @author Robert Futrell
* @version 0.1
*/
class DefaultTokenFactory implements TokenFactory {
private int size;
private int increment;
private TokenImpl[] tokenList;
private int currentFreeToken;
protected static final int DEFAULT_START_SIZE = 30;
protected static final int DEFAULT_INCREMENT = 10;
/**
* Constructor.
*/
public DefaultTokenFactory() {
this(DEFAULT_START_SIZE, DEFAULT_INCREMENT);
}
/**
* Constructor.
*
* @param size The initial number of tokens in this factory.
* @param increment How many tokens to increment by when the stack gets
* empty.
*/
public DefaultTokenFactory(int size, int increment) {
this.size = size;
this.increment = increment;
this.currentFreeToken = 0;
// Give us some tokens to initially work with.
tokenList = new TokenImpl[size];
for (int i=0; iTokenMaker
every time a token list is generated for
* a new line so the tokens can be reused.
*/
public void resetAllTokens() {
currentFreeToken = 0;
}
}