codeql/javascript/extractor/src/com/semmle/js/ast/SourceLocation.java

package com.semmle.js.ast;

/**
 * A source location representing a range of characters.
 */
public class SourceLocation {
	private String source;
	private Position start, end;

	public SourceLocation(String source, Position start, Position end) {
		this.source = source;
		this.start = start;
		this.end = end;
	}

	public SourceLocation(Position start) {
		this(null, start, null);
	}

	public SourceLocation(String source, Position start) {
		this(source, start, null);
	}

	public SourceLocation(SourceLocation that) {
		this(that.source, that.start, that.end);
	}

	/**
	 * The source code contained in this location.
	 */
	public String getSource() {
		return source;
	}

	/**
	 * Set the source code contain in this location.
	 */
	public void setSource(String source) {
		this.source = source;
	}

	/**
	 * The start position of the location.
	 */
	public Position getStart() {
		return start;
	}

	/**
	 * Set the start position of this location.
	 */
	public void setStart(Position start) {
		this.start = start;
	}

	/**
	 * The end position of the location.
	 */
	public Position getEnd() {
		return end;
	}

	/**
	 * Set the end position of this location.
	 */
	public void setEnd(Position end) {
		this.end = end;
	}

	@Override
	public int hashCode() {
		final int prime = 31;
		int result = 1;
		result = prime * result + ((end == null) ? 0 : end.hashCode());
		result = prime * result + ((start == null) ? 0 : start.hashCode());
		return result;
	}

	@Override
	public boolean equals(Object obj) {
		if (this == obj)
			return true;
		if (obj == null)
			return false;
		if (getClass() != obj.getClass())
			return false;
		SourceLocation other = (SourceLocation) obj;
		if (end == null) {
			if (other.end != null)
				return false;
		} else if (!end.equals(other.end))
			return false;
		if (start == null) {
			if (other.start != null)
				return false;
		} else if (!start.equals(other.start))
			return false;
		return true;
	}
}