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
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()