def execute(self, program: Program):
if program.TF is None:
exit_app(
exitCodes.INVALID_FRAME,
'PUSHFRAME\nInvalid access to undefined temporary frame.',
True)
program.LF_Stack.append(program.TF)
program.TF = None
def execute(self, program: Program):
if len(program.LF_Stack) == 0:
exit_app(exitCodes.INVALID_FRAME,
'POPFRAME\nNo available local frame.', True)
program.TF = program.LF_Stack.pop()
def execute(self, program: Program):
program.TF = dict()