def run_string(string):
tokens = OysterScanner(string).tokenize()
statements = OysterParser().parse(tokens)
instructions = [
Instruction(Instruction.CODE, statement)
for statement in statements.items
]
instructions.reverse()
env = populate_globals(Env(None, None))
stack = [StackFrame(instructions, env)]
cur = None
while stack:
cur = eval(stack, cur)
print "Result is", cur.__str__()
def setUp(self):
self.env = populate_globals(Env(None, None))
def setUp(self):
self.lexical_environment = Env(None, None)
self.calling_environment = Env(None, None)
self.local = Env(self.lexical_environment, self.calling_environment)
