Moved comments in Python code from field assignments to field declarations.

pull/110/head
Project Nayuki 4 years ago
parent a807ee27db
commit 8518684c0f

@ -170,11 +170,27 @@ class QrCode:
# ---- Private fields ----
# The version number of this QR Code, which is between 1 and 40 (inclusive).
# This determines the size of this barcode.
_version: int
# The width and height of this QR Code, measured in modules, between
# 21 and 177 (inclusive). This is equal to version * 4 + 17.
_size: int
# The error correction level used in this QR Code.
_errcorlvl: QrCode.Ecc
# The index of the mask pattern used in this QR Code, which is between 0 and 7 (inclusive).
# Even if a QR Code is created with automatic masking requested (mask = -1),
# the resulting object still has a mask value between 0 and 7.
_mask: int
# The modules of this QR Code (False = white, True = black).
# Immutable after constructor finishes. Accessed through get_module().
_modules: List[List[bool]]
# Indicates function modules that are not subjected to masking. Discarded when constructor finishes.
_isfunction: List[List[bool]]
@ -194,22 +210,12 @@ class QrCode:
if not isinstance(errcorlvl, QrCode.Ecc):
raise TypeError("QrCode.Ecc expected")
# The version number of this QR Code, which is between 1 and 40 (inclusive).
# This determines the size of this barcode.
self._version = version
# The width and height of this QR Code, measured in modules, between
# 21 and 177 (inclusive). This is equal to version * 4 + 17.
self._size = version * 4 + 17
# The error correction level used in this QR Code.
self._errcorlvl = errcorlvl
# Initialize both grids to be size*size arrays of Boolean false
# The modules of this QR Code (False = white, True = black).
# Immutable after constructor finishes. Accessed through get_module().
self._modules = [[False] * self._size for _ in range(self._size)] # Initially all white
# Indicates function modules that are not subjected to masking. Discarded when constructor finishes
self._isfunction = [[False] * self._size for _ in range(self._size)]
# Compute ECC, draw modules
@ -231,10 +237,6 @@ class QrCode:
assert 0 <= mask <= 7
self._apply_mask(mask) # Apply the final choice of mask
self._draw_format_bits(mask) # Overwrite old format bits
# The index of the mask pattern used in this QR Code, which is between 0 and 7 (inclusive).
# Even if a QR Code is created with automatic masking requested (mask = -1),
# the resulting object still has a mask value between 0 and 7.
self._mask = mask
del self._isfunction
@ -691,14 +693,14 @@ class QrCode:
# ---- Public helper enumeration ----
class Ecc:
ordinal: int
formatbits: int
ordinal: int # (Public) In the range 0 to 3 (unsigned 2-bit integer)
formatbits: int # (Package-private) In the range 0 to 3 (unsigned 2-bit integer)
"""The error correction level in a QR Code symbol. Immutable."""
# Private constructor
def __init__(self, i: int, fb: int) -> None:
self.ordinal = i # (Public) In the range 0 to 3 (unsigned 2-bit integer)
self.formatbits = fb # (Package-private) In the range 0 to 3 (unsigned 2-bit integer)
self.ordinal = i
self.formatbits = fb
# Placeholders
LOW : QrCode.Ecc
@ -813,8 +815,16 @@ class QrSegment:
# ---- Private fields ----
# The mode indicator of this segment. Accessed through get_mode().
_mode: QrSegment.Mode
# The length of this segment's unencoded data. Measured in characters for
# numeric/alphanumeric/kanji mode, bytes for byte mode, and 0 for ECI mode.
# Always zero or positive. Not the same as the data's bit length.
# Accessed through get_num_chars().
_numchars: int
# The data bits of this segment. Accessed through get_data().
_bitdata: List[int]
@ -828,17 +838,8 @@ class QrSegment:
raise TypeError("QrSegment.Mode expected")
if numch < 0:
raise ValueError()
# The mode indicator of this segment. Accessed through get_mode().
self._mode = mode
# The length of this segment's unencoded data. Measured in characters for
# numeric/alphanumeric/kanji mode, bytes for byte mode, and 0 for ECI mode.
# Always zero or positive. Not the same as the data's bit length.
# Accessed through get_num_chars().
self._numchars = numch
# The data bits of this segment. Accessed through get_data().
self._bitdata = list(bitdata) # Make defensive copy
@ -895,13 +896,13 @@ class QrSegment:
class Mode:
"""Describes how a segment's data bits are interpreted. Immutable."""
_modebits: int
_charcounts: Tuple[int,int,int]
_modebits: int # The mode indicator bits, which is a uint4 value (range 0 to 15)
_charcounts: Tuple[int,int,int] # Number of character count bits for three different version ranges
# Private constructor
def __init__(self, modebits: int, charcounts: Tuple[int,int,int]):
self._modebits = modebits # The mode indicator bits, which is a uint4 value (range 0 to 15)
self._charcounts = charcounts # Number of character count bits for three different version ranges
self._modebits = modebits
self._charcounts = charcounts
# Package-private method
def get_mode_bits(self) -> int:

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