def jump(computation):
jump_dest = computation.stack_pop(type_hint=constants.UINT256)
computation.code.pc = jump_dest
next_opcode = computation.code.peek()
if next_opcode != JUMPDEST:
raise InvalidJumpDestination("Invalid Jump Destination")
if not computation.code.is_valid_opcode(jump_dest):
raise InvalidInstruction("Jump resulted in invalid instruction")
def jumpi(computation):
jump_dest, check_value = computation.stack.pop(num_items=2,
type_hint=constants.UINT256)
if check_value:
computation.code.pc = jump_dest
next_opcode = computation.code.peek()
if next_opcode != JUMPDEST:
raise InvalidJumpDestination("Invalid Jump Destination")
if not computation.code.is_valid_opcode(jump_dest):
raise InvalidInstruction("Jump resulted in invalid instruction")
def __call__(self, computation):
raise InvalidInstruction("Invalid opcode 0x{0:x} @ {1}".format(
self.value,
computation.code.pc - 1,
))