/** Compares the specified span to the current span. */
public int compareTo(Span s) {
if (getStart() < s.getStart()) {
return -1;
} else if (getStart() == s.getStart()) {
if (getEnd() > s.getEnd()) {
return -1;
} else if (getEnd() < s.getEnd()) {
return 1;
} else {
return 0;
}
} else {
return 1;
}
}
/**
* Returns true is the specified span crosses this span.
*
* @param s The span to compare with this span.
* @return true is the specified span overlaps this span and contains a non-overlapping section;
* false otherwise.
*/
public boolean crosses(Span s) {
int sstart = s.getStart();
// either s's start is in this or this' start is in s
return !this.contains(s)
&& !s.contains(this)
&& (getStart() <= sstart && sstart < getEnd()
|| sstart <= getStart() && getStart() < s.getEnd());
}
/**
* Returns true if the specified span intersects with this span.
*
* @param s The span to compare with this span.
* @return true is the spans overlap; false otherwise.
*/
public boolean intersects(Span s) {
int sstart = s.getStart();
// either s's start is in this or this' start is in s
return this.contains(s)
|| s.contains(this)
|| getStart() <= sstart && sstart < getEnd()
|| sstart <= getStart() && getStart() < s.getEnd();
}
/** Checks if the specified span is equal to the current span. */
public boolean equals(Object o) {
boolean result;
if (o == this) {
result = true;
} else if (o instanceof Span) {
Span s = (Span) o;
result =
(getStart() == s.getStart())
&& (getEnd() == s.getEnd())
&& (getType() != null ? type.equals(s.getType()) : true);
} else {
result = false;
}
return result;
}
/**
* Returns true if the specified span is the begin of this span and the specified span is
* contained in this span.
*
* @param s The span to compare with this span.
* @return true if the specified span starts with this span and is contained in this span; false
* otherwise
*/
public boolean startsWith(Span s) {
return getStart() == s.getStart() && contains(s);
}
/**
* Returns true if the specified span is contained by this span. Identical spans are considered to
* contain each other.
*
* @param s The span to compare with this span.
* @return true is the specified span is contained by this span; false otherwise.
*/
public boolean contains(Span s) {
return start <= s.getStart() && s.getEnd() <= end;
}
