Duration.java

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// author: Jason Wolfe



package ros.communication;

public class Duration extends TimeUnit {
        public Duration() {}
        
        public Duration(int secs, int nsecs) {
                this.secs = secs;
                this.nsecs = nsecs;
                normalize();
        }

        public Duration(double secs) {
                this.secs = (int) secs;
                this.nsecs = (int) ((secs - this.secs) * 1000000000);
                normalize();
        }

        public Duration(Duration t) {
                this.secs = t.secs;
                this.nsecs = t.nsecs;
        }

        public Duration add (Duration d) {
                return new Duration(secs + d.secs,nsecs + d.nsecs);
        }

        public Duration subtract (Duration d) {
                return new Duration(secs - d.secs,nsecs - d.nsecs);
        }
        
        public void sleep() throws InterruptedException {
                Thread.sleep(totalNsecs() / 1000000);
        }
        
        public boolean isLonger(Duration d) {
                normalize();
                d.normalize();
                return (secs > d.secs) || ((secs == d.secs) && nsecs > d.nsecs);
        }
        
        public static final Duration MAX_VALUE = new Duration(Integer.MAX_VALUE, 999999999);
        
        public String toString() {
                return secs + ":" + nsecs;
        }
}