def _get_values_sliced(index, value):
"""
Given the list of values retrieved in a get, combine into words if
necessary, or delist if no stop value provided.
"""
if index.step is None or index.step == 1:
pass
elif index.step == 2:
value = vm.to_words(value)
else:
raise ValueError('Invalid step: {}'.format(index.step))
if index.stop is None:
value = value[0]
return value
def _format_instruction(self):
"""
Formats the instruction name and arguments.
"""
i = self.instruction
try:
formatter, has_argument = FORMAT_TABLE[i.addressing_mode]
except KeyError:
raise ValueError('Invalid addressing mode: ' +
str(i.addressing_mode))
if not has_argument:
return formatter.format(i.operation)
if self.argument is None:
# Format the raw bytes
if len(self.bytes) == 2:
arg = vm.hex8(self.bytes[1])
else:
arg = vm.hex16(vm.to_words(self.bytes[1:3])[0])
else:
arg = self.argument
return formatter.format(i.operation, arg)
def test_to_words(self):
self.assertEquals([0x1234, 0x5678],
vm.to_words([0x34, 0x12, 0x78, 0x56]))
