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WIP: Adding type hints to formatter.py #947

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Ben-Reg wants to merge 4 commits into from
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WIP: Adding type hints to formatter.py #947

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a3d7b94
WIP: Adding type hints to formatter.py
Ben-Reg Jan 4, 2022
895fdc0
Formatted with Black
Ben-Reg Jan 6, 2022
8d71839
Added temp variable to allow for stricter typing.
Ben-Reg Jan 6, 2022
0ca23b1
Second attempt at stricter typing.
Ben-Reg Jan 6, 2022
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22 changes: 18 additions & 4 deletions bpython/formatter.py
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Original file line number Diff line number Diff line change
Expand Up @@ -24,9 +24,14 @@
# Pygments really kicks ass, it made it really easy to
# get the exact behaviour I wanted, thanks Pygments.:)

# mypy: disallow_untyped_defs=True
# mypy: disallow_untyped_calls=True


from typing import MutableMapping, Iterable, TextIO
from pygments.formatter import Formatter
from pygments.token import (
_TokenType,
Keyword,
Name,
Comment,
Expand Down Expand Up @@ -96,7 +101,9 @@ class BPythonFormatter(Formatter):
See the Pygments source for more info; it's pretty
straightforward."""

def __init__(self, color_scheme, **options):
def __init__(
self, color_scheme: MutableMapping[str, str], **options: str
) -> None:
self.f_strings = {}
for k, v in theme_map.items():
self.f_strings[k] = f"\x01{color_scheme[v]}"
Expand All @@ -106,14 +113,21 @@ def __init__(self, color_scheme, **options):
self.f_strings[k] += "I"
super().__init__(**options)

def format(self, tokensource, outfile):
o = ""
def format(
self,
tokensource: Iterable[MutableMapping[_TokenType, str]],
outfile: TextIO,
) -> None:
o: str = ""
for token, text in tokensource:
if text == "\n":
continue

while token not in self.f_strings:
token = token.parent
if token.parent is None:
break
else:
token = token.parent
o += f"{self.f_strings[token]}\x03{text}\x04"
outfile.write(o.rstrip())

Expand Down