/**
* Returns the overlap with the given span, or null if there is no overlap.
* @param span The span to check.
*/
public TextSpan overlap(TextSpan span) {
var overlapStart = Math.Max(this._start, span._start);
var overlapEnd = Math.Min(this.end(), span.end());
if (overlapStart < overlapEnd) {
return TextSpan.fromBounds(overlapStart, overlapEnd);
}
return null;
}
/**
* Determines whether the given span overlaps this span. Two spans are considered to overlap
* if they have positions in common and neither is empty. Empty spans do not overlap with any
* other span. Returns true if the spans overlap, false otherwise.
* @param span The span to check.
*/
public bool overlapsWith(TextSpan span) {
var overlapStart = Math.Max(this._start, span._start);
var overlapEnd = Math.Min(this.end(), span.end());
return overlapStart < overlapEnd;
}
/**
* Returns the intersection with the given span, or null if there is no intersection.
* @param span The span to check.
*/
public TextSpan intersection(TextSpan span) {
var intersectStart = Math.Max(this._start, span._start);
var intersectEnd = Math.Min(this.end(), span.end());
if (intersectStart <= intersectEnd) {
return TextSpan.fromBounds(intersectStart, intersectEnd);
}
return null;
}
/**
* Determines whether span falls completely within this span. Returns true if the specified span falls completely within this span, otherwise false.
* @param span The span to check.
*/
public bool containsTextSpan(TextSpan span) {
return span._start >= this._start && span.end() <= this.end();
}
/**
* Determines whether span intersects this span. Two spans are considered to
* intersect if they have positions in common or the end of one span
* coincides with the start of the other span. Returns true if the spans intersect, false otherwise.
* @param The span to check.
*/
public bool intersectsWithTextSpan(TextSpan span) {
return span._start <= this.end() && span.end() >= this._start;
}