#include "LockSegment.hh"
#include <iostream>
#include <stdexcept>

using namespace std;

//======================================  Segment constructor
LockSegment::LockSegment(id_type id, const Time& t0, const Interval dT, 
			 flag_type flg) 
  : mID(id), mStart(t0), mDuration(dT), mFlags(flg)
{
}

//======================================  Set segment range
void
LockSegment::setRange(const Time& t0, const Interval dT) {
    mStart    = t0;
    mDuration = dT;
}

//======================================  And the segments
LockSegment& 
LockSegment::operator&= (const LockSegment& s) {
    Time tEnd  = getEndTime();
    Time tEnd1 = s.getEndTime();
    if (mStart < s.mStart) mStart = s.mStart;
    if (tEnd1 < tEnd) tEnd = tEnd1;
    if (tEnd <= mStart) throw runtime_error("Segments don't overlap");
    mDuration = tEnd - mStart;
    mFlags &= s.mFlags;
    return *this;
}

//======================================  Or the segments
LockSegment& 
LockSegment::operator|= (const LockSegment& s) {
    Time tEnd  = getEndTime();
    Time tEnd1 = s.getEndTime();
    if (tEnd1<mStart || tEnd<s.mStart) 
        throw runtime_error("Segments can't be joined");
    if (mStart > s.mStart) mStart = s.mStart;
    if (tEnd1 > tEnd) tEnd = tEnd1;
    mDuration = tEnd - mStart;
    mFlags |= s.mFlags;
    return *this;
}

//======================================  Print to ostream.
ostream&
operator<<(ostream& o, const LockSegment& s) {
    return o << s.getStartTime().getS() << ":" << s.getDuration();
}