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dtlib: type annotate public functions

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Some of these are also tripping up a python 2 / python 3 warning
in mypy in the way that '{}'.format(b'foo') works, which we silence by
explicitly requesting the python 3 behavior.

Signed-off-by: Martí Bolívar <marti.bolivar@nordicsemi.no>
This commit is contained in:
Martí Bolívar 2021-04-23 11:17:33 -07:00 • committed by Kumar Gala
commit 628fb90412
1 changed files with 5 additions and 4 deletions
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9
scripts/dts/python-devicetree/src/devicetree/dtlib.py
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@ -1784,7 +1784,8 @@ class DT:
# Public functions
#
def to_num(data, length=None, signed=False):
def to_num(data: bytes, length: Optional[int] = None,
signed: bool = False) -> int:
"""
Converts the 'bytes' array 'data' to a number. The value is expected to be
in big-endian format, which is standard in devicetree.
@ -1800,12 +1801,12 @@ def to_num(data, length=None, signed=False):
if length is not None:
_check_length_positive(length)
if len(data) != length:
_err("{} is {} bytes long, expected {}"
_err("{!r} is {} bytes long, expected {}"
.format(data, len(data), length))
return int.from_bytes(data, "big", signed=signed)
def to_nums(data, length=4, signed=False):
def to_nums(data: bytes, length: int = 4, signed: bool = False) -> List[int]:
"""
Like Property.to_nums(), but takes an arbitrary 'bytes' array. The values
are assumed to be in big-endian format, which is standard in devicetree.
@ -1814,7 +1815,7 @@ def to_nums(data, length=4, signed=False):
_check_length_positive(length)
if len(data) % length:
_err("{} is {} bytes long, expected a length that's a a multiple of {}"
_err("{!r} is {} bytes long, expected a length that's a a multiple of {}"
.format(data, len(data), length))
return [int.from_bytes(data[i:i + length], "big", signed=signed)