Example #1
0
def load(filename):
	print "Loading and executing %s" % filename
	rps = 0
	full_line = ""
	line_num = 1
	for line in open(filename, "r"):
		line = line.strip()
		full_line += line
		rps += line.count("(")-line.count(")")
		if rps == 0 and full_line.strip() != "":
			try:
				tokens = tokenize(full_line)
				while len(tokens) > 0:
					val = eval(parse(tokens),global_env)
			except SystemExit:
				exit()
			except:
				print "\nAn error occurred on line %d:\n\t%s\n" % (line_num,full_line)
				traceback.print_exc()
				break
			full_line = ""
		line_num += 1
Example #2
0
def repl(prompt='vernal> '):
	try:
		while True:
			full_line = raw_input(prompt)
			rps = full_line.count("(")-full_line.count(")")
			while rps != 0 or full_line == "":
				line = raw_input(">\t")
				full_line += line
				rps += line.count("(")-line.count(")")
			try:
				tokens = tokenize(full_line)
				while len(tokens) > 0:
					val = eval(parse(tokens),global_env)
					if val is not None: print to_string(val)
			except ValueError as e:
				print e.message
			except Exception as e:
				raise e
	except (KeyboardInterrupt, SystemExit):
		pass
	except:
		print "\nFatal Error\n"
		traceback.print_exc()