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Only compile tab template once

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Kovid Goyal 2020-05-14 09:15:11 +05:30
parent 421fae2b57
commit 424bd8a6cd
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GPG Key ID: 06BC317B515ACE7C
1 changed files with 12 additions and 2 deletions
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14
kitty/tab_bar.py
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@ -2,6 +2,7 @@
# vim:fileencoding=utf-8 # vim:fileencoding=utf-8
# License: GPL v3 Copyright: 2018, Kovid Goyal <kovid at kovidgoyal.net> # License: GPL v3 Copyright: 2018, Kovid Goyal <kovid at kovidgoyal.net>
from functools import lru_cache
from typing import Any, Dict, NamedTuple, Optional, Sequence, Set, Tuple from typing import Any, Dict, NamedTuple, Optional, Sequence, Set, Tuple
from .config import build_ansi_color_table from .config import build_ansi_color_table
@ -48,6 +49,16 @@ def as_rgb(x: int) -> int:
template_failures: Set[str] = set() template_failures: Set[str] = set()
@lru_cache()
def compile_template(template: str) -> Any:
try:
return compile('f"""' + template + '"""', '<template>', 'eval')
except Exception as e:
if template not in template_failures:
template_failures.add(template)
log_error('Invalid tab title template: "{}" with error: {}'.format(template, e))
def draw_title(draw_data: DrawData, screen: Screen, tab: TabBarData, index: int) -> None: def draw_title(draw_data: DrawData, screen: Screen, tab: TabBarData, index: int) -> None:
if tab.needs_attention and draw_data.bell_on_tab: if tab.needs_attention and draw_data.bell_on_tab:
fg = screen.cursor.fg fg = screen.cursor.fg
@ -64,8 +75,7 @@ def draw_title(draw_data: DrawData, screen: Screen, tab: TabBarData, index: int)
'num_windows': tab.num_windows, 'num_windows': tab.num_windows,
'title': tab.title 'title': tab.title
} }
compiled_template = compile('f"""' + template + '"""', '<tab_template>', 'eval') title = eval(compile_template(template), {'__builtins__': {}}, eval_locals)
title = eval(compiled_template, {'__builtins__': {}}, eval_locals)
except Exception as e: except Exception as e:
if template not in template_failures: if template not in template_failures:
template_failures.add(template) template_failures.add(template)