net.amygdalum.util.text.QGramAlphabet Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of compilerutils Show documentation

Utility classes needed for search and compiler applications

The newest version!

package net.amygdalum.util.text;

import java.util.List;

public class QGramAlphabet {

	private QGramMapping mapping;
	private int minQGram;
	private int maxQGram;

	private QGramAlphabet(QGramMapping mapping) {
		this.mapping = mapping;
		this.minQGram = Integer.MAX_VALUE;
		this.maxQGram = 0;
	}

	public static QGramAlphabet of(List patterns, QGramMapping mapping) {
		QGramAlphabet qgramAlphabet = new QGramAlphabet(mapping);
		for (char[] pattern : patterns) {
			for (int qc : mapping.iterate(pattern)) {
				qgramAlphabet.add(qc);
			}
		}
		return qgramAlphabet;
	}
	
	public QGramMapping getMapping() {
		return mapping;
	}

	public void add(int qc) {
		if (qc < minQGram) {
			minQGram = qc;
		}
		if (qc > maxQGram) {
			maxQGram = qc;
		}
	}

	public int minQGram() {
		return minQGram;
	}

	public int maxQGram() {
		return maxQGram;
	}

}