natives.py

from __future__ import print_function
import NP 

def setup_natives(env):
	natives = [
			{
			'name':'print',
			'func':(lambda x='':print(stringify(x), end=''))
			},
			{
			'name':'println',
			'func':(lambda x='':print(stringify(x), end='\n'))
			},
			{
			'name':'str',
                        'func':(lambda x='':{"type": "str", "value": str(stringify(x))})
			},
			{
			'name':'int',
                        'func':(lambda x:{"type": "num", "value": int(stringify(x))})
			},
			{
			'name':'float',
			'func':(lambda x:float(x))
			},
			{
			'name':'input',
			'func':(lambda x='':raw_input(x))
			}
		]

	for x in natives:
		env.define(x['name'], x['func'])
def convert(value):
	return {'string': value}
def stringify(value):
        if(isinstance(value, (str))):
                return value
	if (value['type'] == 'list'):
		a = []
		for x in value['value']:
			a.append(x['value'])
		return a
	elif value == None:
		return 'null'
	else:
		try:
			return (value['value'])
		except:
			return value