def getenv(frame, args):
key = args[0]
assert isinstance(key, String)
try:
frame.put([String(os.environ[key.value])])
frame.set_status(Success())
except KeyError:
frame.set_status(Fail(String('no-key')))
def pop(self):
if not self.stack: raise Crash(Fail(String('empty-stack')))
val = self.stack.pop()
assert isinstance(val, Value)
return val
def fail_str(self, reason_str):
raise Crash(Fail(String(reason_str)))
def fail(self, reason):
raise Crash(Fail(reason))
def crash(frame, args):
frame.crash(Fail(args[0]))
def fail(frame, args):
frame.set_status(Fail(args[0]))
frame.proc.pop()
def boolify(b, frame, msg):
if b:
frame.set_status(Success())
else:
frame.set_status(Fail(String(msg)))
def eq(frame, args):
if args[0].eq(args[1]):
frame.set_status(Success())
else:
frame.set_status(Fail(String('not-eq')))