#!/usr/bin/env python
import pickle, sys
import stackless

ch = stackless.channel()

def recurs(depth, level=1):
    print 'enter level %s%d' % (level*'  ', level)
    if level >= depth:
        ch.send('hi')
    if level < depth:
        recurs(depth, level+1)
    print 'leave level %s%d' % (level*'  ', level)

def demo(depth):
    t = stackless.tasklet(recurs)(depth)
    print ch.receive()
    pickle.dump(t, file('tasklet.pickle', 'wb'))

if __name__ == '__main__':
    if len(sys.argv) > 1:
        t = pickle.load(file(sys.argv[1], 'rb'))
        t.insert()
    else:
        t = stackless.tasklet(demo)(14)
    print 'before run'
    stackless.run()
    print 'after run'

# remark: think of fixing cells etc. on the sprint