def destroy_frame(self, out, func, frame):
registers, reg_start, args_start, ret_start, allargs = frame
destns = self.func.namespace
stack_move = out.namespace == destns or destns is None
# Restore registers
if registers:
for i, reg in enumerate(registers):
src = LocalStackVariable(reg.type, destns, reg_start + i)
if stack_move:
# shouldn't need to realign because they're registers,
# but just to be safe
reg.realign_frame(1)
src.clone_to(reg, out)
if stack_move:
reg.realign_frame(-1)
# Mutate pass-by-reference arguments
if self.fnargs:
for i, (ptype, ppass) in enumerate(self.func.params):
if ppass == 'byref':
src = LocalStackVariable(ptype, destns, args_start + i)
arg = self.fnargs[i]
assert isinstance(arg,
Variable), "%s passed by value!" % arg
# The mutated arguments are on frame 0
# We want to copy them to where they were from (now frame 1)
if stack_move:
arg.realign_frame(1)
src.clone_to(arg, out)
if stack_move:
arg.realign_frame(-1)
# Copy return values into return variables
if self.retvars:
for i, var in enumerate(self.retvars):
if var is None:
continue
src = LocalStackVariable(var.type, destns, ret_start + i)
if stack_move:
var.realign_frame(1)
src.clone_to(var, out)
if stack_move:
var.realign_frame(-1)
# Pop invocation frame
if allargs:
out.write(
c.DataRemove(c.GlobalNBT(destns), c.StackPath(STACK_HEAD)))
def push_to_stack(self, out):
# out-of-bounds stack path
out.write(c.DataModifyFrom(c.GlobalNBT(self.namespace),
c.StackPath(None), 'append', self.storage,
self.root_path))
def storage(self):
return c.GlobalNBT(self.namespace)
def get_cmd(self, func):
storage = c.GlobalNBT(func.namespace)
return c.DataRemove(storage, c.StackPath(STACK_HEAD))
def apply(self, out, func):
storage = c.GlobalNBT(func.namespace)
out.write(_zt.cmd_set_from(c.StackFrameHead(-1), storage))
def apply(self, out, func):
out.write(
_zt.cmd_set_from(c.StackPath(STACK_HEAD, None),
c.GlobalNBT(func.namespace)))
out.write(_zt.clear_last_exec())
def get_cmd(self, func):
storage = c.GlobalNBT(func.namespace)
return _ut.cmd_set_from(c.StackPath(STACK_HEAD, None), storage)