def execute(self, token):
jitdriver.jit_merge_point(phrases=self.phrases, token=token, vm=self)
stack = self.stack
if isinstance(token, Literal):
stack.push(token._l)
elif isinstance(token, Reference):
# XXX Probably not the best type for this.
stack.push(Str(token._r))
elif isinstance(token, Word):
self.run_phrase(token._w)
elif isinstance(token, Instruction):
i = token._i
if False:
pass
elif i == NEWE:
stack.push(E(self))
elif i == DROP:
stack.pop()
elif i == DUP:
stack.push(stack.peek())
elif i == OVER:
x = stack.pop()
y = stack.peek()
stack.push(x)
stack.push(y)
elif i == SWAP:
x = stack.pop()
y = stack.pop()
stack.push(x)
stack.push(y)
elif i == ROT:
z = stack.pop()
y = stack.pop()
x = stack.pop()
stack.push(y)
stack.push(z)
stack.push(x)
elif i == LIST:
stack.push(List([]))
elif i == CALL:
args = stack.pop()
name = stack.pop()
target = stack.pop()
result = self.pass_message(target, name, args)
stack.push(result)
elif i == SEND:
args = stack.pop()
name = stack.pop()
target = stack.pop()
promise = Promise(target, name, args)
self.promises.append(promise)
stack.push(promise)
elif i == ESCAPE:
target = stack.pop()
ejector = Ejector(stack)
stack.push(ejector)
t = unwrap_str(target)
with ejector:
self.run_phrase(t)
elif i == EJECT:
value = stack.pop()
ejector = stack.pop()
# Raise an exception to unwind the stack.
ejector.eject(value)
elif i == MAKE_METHOD:
name = stack.pop()
code = stack.pop()
stack.push(List([name, code]))
elif i == OBJECT:
methods = stack.pop()
obj = UserObject(self, methods)
stack.push(obj)
elif i == APPEND:
obj = stack.pop()
l = stack.peek()
# Check the type.
if isinstance(l, List):
l.push(obj)
else:
raise TypeError("Couldn't push into non-List %s" % l)
elif i == IF:
otherwise = stack.pop()
consequent = stack.pop()
whether = unwrap_bool(stack.pop())
if whether:
word = consequent
else:
word = otherwise
self.run_phrase(word._s)
elif i == PRINT:
print stack.pop().repr()
elif i == STACK:
print "Stack:", stack.repr()
else:
print "Unknown instruction", i
else:
print "Can't handle", token
def execute(self, token):
jitdriver.jit_merge_point(phrases=self.phrases, token=token, vm=self)
stack = self.stack
if isinstance(token, Literal):
stack.push(token._l)
elif isinstance(token, Reference):
# XXX Probably not the best type for this.
stack.push(Str(token._r))
elif isinstance(token, Word):
self.run_phrase(token._w)
elif isinstance(token, Instruction):
i = token._i
if False:
pass
elif i == NEWE:
stack.push(E(self))
elif i == DROP:
stack.pop()
elif i == DUP:
stack.push(stack.peek())
elif i == OVER:
x = stack.pop()
y = stack.peek()
stack.push(x)
stack.push(y)
elif i == SWAP:
x = stack.pop()
y = stack.pop()
stack.push(x)
stack.push(y)
elif i == ROT:
z = stack.pop()
y = stack.pop()
x = stack.pop()
stack.push(y)
stack.push(z)
stack.push(x)
elif i == LIST:
stack.push(List([]))
elif i == CALL:
args = stack.pop()
name = stack.pop()
target = stack.pop()
result = self.pass_message(target, name, args)
stack.push(result)
elif i == SEND:
args = stack.pop()
name = stack.pop()
target = stack.pop()
promise = Promise(target, name, args)
self.promises.append(promise)
stack.push(promise)
elif i == ESCAPE:
target = stack.pop()
ejector = Ejector(stack)
stack.push(ejector)
t = unwrap_str(target)
with ejector:
self.run_phrase(t)
elif i == EJECT:
value = stack.pop()
ejector = stack.pop()
# Raise an exception to unwind the stack.
ejector.eject(value)
elif i == MAKE_METHOD:
name = stack.pop()
code = stack.pop()
stack.push(List([name, code]))
elif i == OBJECT:
methods = stack.pop()
obj = UserObject(self, methods)
stack.push(obj)
elif i == APPEND:
obj = stack.pop()
l = stack.peek()
# Check the type.
if isinstance(l, List):
l.push(obj)
else:
raise TypeError("Couldn't push into non-List %s" % l)
elif i == IF:
otherwise = stack.pop()
consequent = stack.pop()
whether = unwrap_bool(stack.pop())
if whether:
word = consequent
else:
word = otherwise
self.run_phrase(word._s)
elif i == PRINT:
print stack.pop().repr()
elif i == STACK:
print "Stack:", stack.repr()
else:
print "Unknown instruction", i
else:
print "Can't handle", token
def pass_message(self, target, message, args):
m = unwrap_str(message)
a = unwrap_list(args)
print "~ Passing to %s: %s, %s" % (target.repr(), message.repr(),
args.repr())
return target.call(m, a)
def pass_message(self, target, message, args):
m = unwrap_str(message)
a = unwrap_list(args)
print "~ Passing to %s: %s, %s" % (target.repr(), message.repr(),
args.repr())
return target.call(m, a)