mirror of
https://gitee.com/openharmony/third_party_qrcodegen
synced 2024-11-27 09:20:50 +00:00
Added type annotations to all Python functions and methods, and almost all global variables.
This commit is contained in:
Project Nayuki
parent
49f9ea0890
commit
55dd3c881e
@ -25,10 +25,10 @@
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#
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import itertools, random, subprocess, sys, time
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from typing import Optional, TypeVar
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from typing import List, Optional, TypeVar
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CHILD_PROGRAMS = [
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CHILD_PROGRAMS: List[List[str]] = [
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["python3", "-B", "../python/qrcodegen-worker.py"], # Python program
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["java", "-cp", "../java/src/main/java", "-ea:io.nayuki.qrcodegen...", "io/nayuki/qrcodegen/QrCodeGeneratorWorker"], # Java program
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["node", "../typescript-javascript/qrcodegen-worker.js"], # TypeScript program
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@ -38,9 +38,9 @@ CHILD_PROGRAMS = [
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]
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subprocs = []
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subprocs: List[subprocess.Popen] = []
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def main():
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def main() -> None:
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# Launch workers
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global subprocs
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try:
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@ -67,7 +67,7 @@ def main():
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print()
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def do_trial():
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def do_trial() -> None:
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mode = random.randrange(4)
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if mode == 0: # Numeric
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length = round((2 * 7089) ** random.random())
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@ -115,15 +115,15 @@ def do_trial():
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read_verify()
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def write_all(val):
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def write_all(val: int) -> None:
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for proc in subprocs:
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print(val, file=proc.stdin)
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def flush_all():
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def flush_all() -> None:
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for proc in subprocs:
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not_none(proc.stdin).flush()
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def read_verify():
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def read_verify() -> int:
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val = not_none(subprocs[0].stdout).readline().rstrip("\r\n")
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for proc in subprocs[1 : ]:
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if not_none(proc.stdout).readline().rstrip("\r\n") != val:
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@ -27,7 +27,7 @@
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from qrcodegen import QrCode, QrSegment
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def main():
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def main() -> None:
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"""The main application program."""
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do_basic_demo()
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do_variety_demo()
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@ -38,7 +38,7 @@ def main():
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# ---- Demo suite ----
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def do_basic_demo():
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def do_basic_demo() -> None:
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"""Creates a single QR Code, then prints it to the console."""
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text = "Hello, world!" # User-supplied Unicode text
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errcorlvl = QrCode.Ecc.LOW # Error correction level
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@ -49,7 +49,7 @@ def do_basic_demo():
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print(qr.to_svg_str(4))
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def do_variety_demo():
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def do_variety_demo() -> None:
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"""Creates a variety of QR Codes that exercise different features of the library, and prints each one to the console."""
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# Numeric mode encoding (3.33 bits per digit)
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@ -76,7 +76,7 @@ def do_variety_demo():
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print_qr(qr)
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def do_segment_demo():
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def do_segment_demo() -> None:
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"""Creates QR Codes with manually specified segments for better compactness."""
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# Illustration "silver"
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@ -146,7 +146,7 @@ def do_segment_demo():
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print_qr(qr)
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def do_mask_demo():
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def do_mask_demo() -> None:
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"""Creates QR Codes with the same size and contents but different mask patterns."""
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# Project Nayuki URL
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@ -170,7 +170,7 @@ def do_mask_demo():
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# ---- Utilities ----
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def print_qr(qrcode):
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def print_qr(qrcode: QrCode) -> None:
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"""Prints the given QrCode object to the console."""
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border = 4
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for y in range(-border, qrcode.get_size() + border):
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@ -30,11 +30,11 @@ import sys
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import qrcodegen
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def read_int():
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def read_int() -> int:
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return int(input())
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def main():
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def main() -> None:
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while True:
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# Read data or exit
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@ -22,6 +22,7 @@
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#
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import collections, itertools, re
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from typing import List, Optional, Tuple
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"""
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@ -79,7 +80,7 @@ class QrCode:
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# ---- Static factory functions (high level) ----
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@staticmethod
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def encode_text(text, ecl):
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def encode_text(text: str, ecl: QrCode.Ecc) -> QrCode:
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"""Returns a QR Code representing the given Unicode text string at the given error correction level.
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As a conservative upper bound, this function is guaranteed to succeed for strings that have 738 or fewer
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Unicode code points (not UTF-16 code units) if the low error correction level is used. The smallest possible
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@ -90,7 +91,7 @@ class QrCode:
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@staticmethod
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def encode_binary(data, ecl):
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def encode_binary(data: bytes, ecl: QrCode.Ecc) -> QrCode:
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"""Returns a QR Code representing the given binary data at the given error correction level.
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This function always encodes using the binary segment mode, not any text mode. The maximum number of
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bytes allowed is 2953. The smallest possible QR Code version is automatically chosen for the output.
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@ -103,7 +104,7 @@ class QrCode:
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# ---- Static factory functions (mid level) ----
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@staticmethod
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def encode_segments(segs, ecl, minversion=1, maxversion=40, mask=-1, boostecl=True):
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def encode_segments(segs: List[QrSegment], ecl: QrCode.Ecc, minversion: int = 1, maxversion: int = 40, mask: int = -1, boostecl: bool = True) -> QrCode:
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"""Returns a QR Code representing the given segments with the given encoding parameters.
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The smallest possible QR Code version within the given range is automatically
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chosen for the output. Iff boostecl is true, then the ECC level of the result
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@ -168,7 +169,7 @@ class QrCode:
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# ---- Constructor (low level) ----
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def __init__(self, version, errcorlvl, datacodewords, mask):
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def __init__(self, version: int, errcorlvl: QrCode.Ecc, datacodewords: List[int], mask: int) -> None:
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"""Creates a new QR Code with the given version number,
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error correction level, data codeword bytes, and mask number.
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This is a low-level API that most users should not use directly.
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@ -230,23 +231,23 @@ class QrCode:
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# ---- Accessor methods ----
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def get_version(self):
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def get_version(self) -> int:
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"""Returns this QR Code's version number, in the range [1, 40]."""
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return self._version
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def get_size(self):
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def get_size(self) -> int:
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"""Returns this QR Code's size, in the range [21, 177]."""
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return self._size
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def get_error_correction_level(self):
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def get_error_correction_level(self) -> QrCode.Ecc:
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"""Returns this QR Code's error correction level."""
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return self._errcorlvl
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def get_mask(self):
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def get_mask(self) -> int:
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"""Returns this QR Code's mask, in the range [0, 7]."""
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return self._mask
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def get_module(self, x, y):
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def get_module(self, x, y) -> bool:
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"""Returns the color of the module (pixel) at the given coordinates, which is False
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for white or True for black. The top left corner has the coordinates (x=0, y=0).
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If the given coordinates are out of bounds, then False (white) is returned."""
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@ -255,7 +256,7 @@ class QrCode:
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# ---- Public instance methods ----
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def to_svg_str(self, border):
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def to_svg_str(self, border: int) -> str:
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"""Returns a string of SVG code for an image depicting this QR Code, with the given number
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of border modules. The string always uses Unix newlines (\n), regardless of the platform."""
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if border < 0:
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@ -276,7 +277,7 @@ class QrCode:
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# ---- Private helper methods for constructor: Drawing function modules ----
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def _draw_function_patterns(self):
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def _draw_function_patterns(self) -> None:
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"""Reads this object's version field, and draws and marks all function modules."""
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# Draw horizontal and vertical timing patterns
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for i in range(self._size):
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@ -302,7 +303,7 @@ class QrCode:
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self._draw_version()
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def _draw_format_bits(self, mask):
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def _draw_format_bits(self, mask) -> None:
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"""Draws two copies of the format bits (with its own error correction code)
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based on the given mask and this object's error correction level field."""
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# Calculate error correction code and pack bits
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@ -330,7 +331,7 @@ class QrCode:
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self._set_function_module(8, self._size - 8, True) # Always black
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def _draw_version(self):
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def _draw_version(self) -> None:
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"""Draws two copies of the version bits (with its own error correction code),
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based on this object's version field, iff 7 <= version <= 40."""
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if self._version < 7:
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@ -352,7 +353,7 @@ class QrCode:
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self._set_function_module(b, a, bit)
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def _draw_finder_pattern(self, x, y):
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def _draw_finder_pattern(self, x, y) -> None:
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"""Draws a 9*9 finder pattern including the border separator,
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with the center module at (x, y). Modules can be out of bounds."""
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for dy in range(-4, 5):
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@ -363,7 +364,7 @@ class QrCode:
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self._set_function_module(xx, yy, max(abs(dx), abs(dy)) not in (2, 4))
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def _draw_alignment_pattern(self, x, y):
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def _draw_alignment_pattern(self, x, y) -> None:
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"""Draws a 5*5 alignment pattern, with the center module
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at (x, y). All modules must be in bounds."""
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for dy in range(-2, 3):
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@ -371,7 +372,7 @@ class QrCode:
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self._set_function_module(x + dx, y + dy, max(abs(dx), abs(dy)) != 1)
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def _set_function_module(self, x, y, isblack):
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def _set_function_module(self, x: int, y: int, isblack: bool) -> None:
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"""Sets the color of a module and marks it as a function module.
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Only used by the constructor. Coordinates must be in bounds."""
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assert type(isblack) is bool
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@ -381,7 +382,7 @@ class QrCode:
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# ---- Private helper methods for constructor: Codewords and masking ----
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def _add_ecc_and_interleave(self, data):
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def _add_ecc_and_interleave(self, data: List[int]) -> List[int]:
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"""Returns a new byte string representing the given data with the appropriate error correction
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codewords appended to it, based on this object's version and error correction level."""
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version = self._version
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@ -418,7 +419,7 @@ class QrCode:
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return result
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def _draw_codewords(self, data):
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def _draw_codewords(self, data: List[int]) -> None:
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"""Draws the given sequence of 8-bit codewords (data and error correction) onto the entire
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data area of this QR Code. Function modules need to be marked off before this is called."""
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assert len(data) == QrCode._get_num_raw_data_modules(self._version) // 8
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@ -441,7 +442,7 @@ class QrCode:
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assert i == len(data) * 8
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def _apply_mask(self, mask):
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def _apply_mask(self, mask: int) -> None:
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"""XORs the codeword modules in this QR Code with the given mask pattern.
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The function modules must be marked and the codeword bits must be drawn
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before masking. Due to the arithmetic of XOR, calling applyMask() with
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@ -455,7 +456,7 @@ class QrCode:
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self._modules[y][x] ^= (masker(x, y) == 0) and (not self._isfunction[y][x])
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def _get_penalty_score(self):
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def _get_penalty_score(self) -> int:
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"""Calculates and returns the penalty score based on state of this QR Code's current modules.
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This is used by the automatic mask choice algorithm to find the mask pattern that yields the lowest score."""
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result = 0
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@ -518,7 +519,7 @@ class QrCode:
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# ---- Private helper functions ----
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def _get_alignment_pattern_positions(self):
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def _get_alignment_pattern_positions(self) -> List[int]:
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"""Returns an ascending list of positions of alignment patterns for this version number.
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Each position is in the range [0,177), and are used on both the x and y axes.
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This could be implemented as lookup table of 40 variable-length lists of integers."""
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@ -534,7 +535,7 @@ class QrCode:
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@staticmethod
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def _get_num_raw_data_modules(ver):
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def _get_num_raw_data_modules(ver) -> int:
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"""Returns the number of data bits that can be stored in a QR Code of the given version number, after
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all function modules are excluded. This includes remainder bits, so it might not be a multiple of 8.
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The result is in the range [208, 29648]. This could be implemented as a 40-entry lookup table."""
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@ -551,7 +552,7 @@ class QrCode:
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@staticmethod
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def _get_num_data_codewords(ver, ecl):
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def _get_num_data_codewords(ver, ecl: QrCode.Ecc) -> int:
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"""Returns the number of 8-bit data (i.e. not error correction) codewords contained in any
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QR Code of the given version number and error correction level, with remainder bits discarded.
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This stateless pure function could be implemented as a (40*4)-cell lookup table."""
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@ -561,7 +562,7 @@ class QrCode:
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@staticmethod
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def _reed_solomon_compute_divisor(degree):
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def _reed_solomon_compute_divisor(degree: int) -> List[int]:
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"""Returns a Reed-Solomon ECC generator polynomial for the given degree. This could be
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implemented as a lookup table over all possible parameter values, instead of as an algorithm."""
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if not (1 <= degree <= 255):
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@ -585,7 +586,7 @@ class QrCode:
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@staticmethod
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def _reed_solomon_compute_remainder(data, divisor):
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def _reed_solomon_compute_remainder(data: List[int], divisor: List[int]) -> List[int]:
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"""Returns the Reed-Solomon error correction codeword for the given data and divisor polynomials."""
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result = [0] * len(divisor)
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for b in data: # Polynomial division
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@ -597,7 +598,7 @@ class QrCode:
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@staticmethod
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def _reed_solomon_multiply(x, y):
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def _reed_solomon_multiply(x: int, y: int) -> int:
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"""Returns the product of the two given field elements modulo GF(2^8/0x11D). The arguments and result
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are unsigned 8-bit integers. This could be implemented as a lookup table of 256*256 entries of uint8."""
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if x >> 8 != 0 or y >> 8 != 0:
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@ -611,7 +612,7 @@ class QrCode:
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return z
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def _finder_penalty_count_patterns(self, runhistory):
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def _finder_penalty_count_patterns(self, runhistory: collections.deque) -> int:
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"""Can only be called immediately after a white run is added, and
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returns either 0, 1, or 2. A helper function for _get_penalty_score()."""
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n = runhistory[1]
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@ -621,7 +622,7 @@ class QrCode:
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+ (1 if (core and runhistory[6] >= n * 4 and runhistory[0] >= n) else 0)
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def _finder_penalty_terminate_and_count(self, currentruncolor, currentrunlength, runhistory):
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def _finder_penalty_terminate_and_count(self, currentruncolor: bool, currentrunlength: int, runhistory: collections.deque) -> int:
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"""Must be called at the end of a line (row or column) of modules. A helper function for _get_penalty_score()."""
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if currentruncolor: # Terminate black run
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self._finder_penalty_add_history(currentrunlength, runhistory)
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@ -631,7 +632,7 @@ class QrCode:
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return self._finder_penalty_count_patterns(runhistory)
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def _finder_penalty_add_history(self, currentrunlength, runhistory):
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def _finder_penalty_add_history(self, currentrunlength: int, runhistory: collections.deque) -> None:
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if runhistory[0] == 0:
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currentrunlength += self._size # Add white border to initial run
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runhistory.appendleft(currentrunlength)
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@ -681,7 +682,7 @@ class QrCode:
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class Ecc:
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"""The error correction level in a QR Code symbol. Immutable."""
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# Private constructor
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def __init__(self, i, fb):
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def __init__(self, i: int, fb: int) -> None:
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self.ordinal = i # (Public) In the range 0 to 3 (unsigned 2-bit integer)
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self.formatbits = fb # (Package-private) In the range 0 to 3 (unsigned 2-bit integer)
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@ -715,7 +716,7 @@ class QrSegment:
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# ---- Static factory functions (mid level) ----
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@staticmethod
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def make_bytes(data):
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def make_bytes(data) -> QrSegment:
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"""Returns a segment representing the given binary data encoded in byte mode.
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All input byte lists are acceptable. Any text string can be converted to
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UTF-8 bytes (s.encode("UTF-8")) and encoded as a byte mode segment."""
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@ -728,7 +729,7 @@ class QrSegment:
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@staticmethod
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def make_numeric(digits):
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def make_numeric(digits: str) -> QrSegment:
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"""Returns a segment representing the given string of decimal digits encoded in numeric mode."""
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if QrSegment.NUMERIC_REGEX.match(digits) is None:
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raise ValueError("String contains non-numeric characters")
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@ -742,7 +743,7 @@ class QrSegment:
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@staticmethod
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def make_alphanumeric(text):
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def make_alphanumeric(text: str) -> QrSegment:
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"""Returns a segment representing the given text string encoded in alphanumeric mode.
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The characters allowed are: 0 to 9, A to Z (uppercase only), space,
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dollar, percent, asterisk, plus, hyphen, period, slash, colon."""
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@ -759,7 +760,7 @@ class QrSegment:
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@staticmethod
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def make_segments(text):
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def make_segments(text: str) -> List[QrSegment]:
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"""Returns a new mutable list of zero or more segments to represent the given Unicode text string.
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The result may use various segment modes and switch modes to optimize the length of the bit stream."""
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if not isinstance(text, str):
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@ -777,7 +778,7 @@ class QrSegment:
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@staticmethod
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def make_eci(assignval):
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def make_eci(assignval: int) -> QrSegment:
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"""Returns a segment representing an Extended Channel Interpretation
|
||||
(ECI) designator with the given assignment value."""
|
||||
bb = _BitBuffer()
|
||||
@ -798,7 +799,7 @@ class QrSegment:
|
||||
|
||||
# ---- Constructor (low level) ----
|
||||
|
||||
def __init__(self, mode, numch, bitdata):
|
||||
def __init__(self, mode: QrSegment.Mode, numch: int, bitdata: List[int]) -> None:
|
||||
"""Creates a new QR Code segment with the given attributes and data.
|
||||
The character count (numch) must agree with the mode and the bit buffer length,
|
||||
but the constraint isn't checked. The given bit buffer is cloned and stored."""
|
||||
@ -822,22 +823,22 @@ class QrSegment:
|
||||
|
||||
# ---- Accessor methods ----
|
||||
|
||||
def get_mode(self):
|
||||
def get_mode(self) -> QrSegment.Mode:
|
||||
"""Returns the mode field of this segment."""
|
||||
return self._mode
|
||||
|
||||
def get_num_chars(self):
|
||||
def get_num_chars(self) -> int:
|
||||
"""Returns the character count field of this segment."""
|
||||
return self._numchars
|
||||
|
||||
def get_data(self):
|
||||
def get_data(self) -> List[int]:
|
||||
"""Returns a new copy of the data bits of this segment."""
|
||||
return list(self._bitdata) # Make defensive copy
|
||||
|
||||
|
||||
# Package-private function
|
||||
@staticmethod
|
||||
def get_total_bits(segs, version):
|
||||
def get_total_bits(segs, version: int) -> Optional[int]:
|
||||
"""Calculates the number of bits needed to encode the given segments at
|
||||
the given version. Returns a non-negative number if successful. Otherwise
|
||||
returns None if a segment has too many characters to fit its length field."""
|
||||
@ -874,17 +875,17 @@ class QrSegment:
|
||||
"""Describes how a segment's data bits are interpreted. Immutable."""
|
||||
|
||||
# Private constructor
|
||||
def __init__(self, modebits, charcounts):
|
||||
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
|
||||
|
||||
# Package-private method
|
||||
def get_mode_bits(self):
|
||||
def get_mode_bits(self) -> int:
|
||||
"""Returns an unsigned 4-bit integer value (range 0 to 15) representing the mode indicator bits for this mode object."""
|
||||
return self._modebits
|
||||
|
||||
# Package-private method
|
||||
def num_char_count_bits(self, ver):
|
||||
def num_char_count_bits(self, ver: int) -> int:
|
||||
"""Returns the bit width of the character count field for a segment in this mode
|
||||
in a QR Code at the given version number. The result is in the range [0, 16]."""
|
||||
return self._charcounts[(ver + 7) // 17]
|
||||
@ -910,7 +911,7 @@ class QrSegment:
|
||||
class _BitBuffer(list):
|
||||
"""An appendable sequence of bits (0s and 1s). Mainly used by QrSegment."""
|
||||
|
||||
def append_bits(self, val, n):
|
||||
def append_bits(self, val: int, n: int) -> None:
|
||||
"""Appends the given number of low-order bits of the given
|
||||
value to this buffer. Requires n >= 0 and 0 <= val < 2^n."""
|
||||
if n < 0 or val >> n != 0:
|
||||
@ -918,7 +919,7 @@ class _BitBuffer(list):
|
||||
self.extend(((val >> i) & 1) for i in reversed(range(n)))
|
||||
|
||||
|
||||
def _get_bit(x, i):
|
||||
def _get_bit(x: int, i: int) -> bool:
|
||||
"""Returns true iff the i'th bit of x is set to 1."""
|
||||
return (x >> i) & 1 != 0
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user