org.unlaxer.Range Maven / Gradle / Ivy

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package org.unlaxer;

public class Range{
	
	public final int startIndexInclusive;
	public final int endIndexExclusive;
	
	public Range(int startIndexInclusive, int endIndexExclusive) {
		super();
		this.startIndexInclusive = startIndexInclusive;
		this.endIndexExclusive = endIndexExclusive;
	}
	public Range(int startIndexInclusive) {
		super();
		this.startIndexInclusive = startIndexInclusive;
		this.endIndexExclusive = startIndexInclusive;
	}
	public Range() {
		super();
		this.startIndexInclusive = 0;
		this.endIndexExclusive = 0;
	}
	public boolean match(int position){
		return position >=startIndexInclusive && position < endIndexExclusive;
	}
	
	public RangesRelation relation(Range other){
		int otherStart = other.startIndexInclusive;
		int otherEnd= other.endIndexExclusive;
		if(startIndexInclusive == otherStart && endIndexExclusive == otherEnd){
			
			return RangesRelation.equal;
			
		}else if(startIndexInclusive >= otherStart && endIndexExclusive <= otherEnd){
			
			return RangesRelation.outer;
			
		}else if(startIndexInclusive <= otherStart && endIndexExclusive >= otherEnd){
			
			return RangesRelation.inner;
			
		}else if(startIndexInclusive >= otherEnd || endIndexExclusive <= otherStart){
			
			return RangesRelation.notCrossed;
		}
		return RangesRelation.crossed;
	}
}