#!/usr/bin/env python

import arg
import dbg

def add(a, b):
	return a + b

def inc(a):
	return add( a, 1 )

def dec(a, step, n):
	return a - step * n

cmds = [
	arg.cmd_new( 'add', [ 'v1', 'v2' ], comment='add v1 v2' ),
	arg.cmd_new( 'inc', [ 'v' ], comment='increment v' ),
	arg.cmd_new( 'dec', [ 'v' ], opts={ 'step': 1, 'n': 1 }, comment='v - step * n' ),
]

cmd = arg.get_name_args( cmds )

dbg.out( 'cmd.name={} cmd.args={} cmd.opts={}'.format( cmd.name, cmd.args, cmd.opts ) )

func = eval( cmd.name )

args = list( map( float, cmd.args ) )

dbg.out( 'func={} args={}'.format( func, args ) )

ret = func( *args, **cmd.opts )

dbg.out( 'ret={}'.format( ret ) )

# EOF