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bugdown: Break out helper functions for extending bugdown.

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These will make profiling a lot easier, and you
can also quickly disable features.  The overhead
of these function calls is dwarfed by other concerns.
This commit is contained in:
Steve Howell
2018-11-03 16:41:31 +00:00
committed by Tim Abbott
parent ffa4daf936
commit c8a2081526
1 changed files with 26 additions and 0 deletions
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26
zerver/lib/bugdown/__init__.py
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@@ -1617,8 +1617,23 @@ class Bugdown(markdown.Extension):
except Exception:
pass
# Having the extension operations split into a bunch of
# smaller functions both helps with organization and
# simplifies profiling of the markdown engine build time.
self.extend_alert_words(md)
self.extend_text_formatting(md)
self.extend_block_formatting(md)
self.extend_avatars(md)
self.extend_modal_links(md)
self.extend_mentions(md)
self.extend_stream_links(md)
self.extend_emojis(md)
self.extend_misc(md)
def extend_alert_words(self, md: markdown.Markdown) -> None:
md.preprocessors.add("custom_text_notifications", AlertWordsNotificationProcessor(md), "_end")
def extend_text_formatting(self, md: markdown.Markdown) -> None:
# Inline code block without whitespace stripping
md.inlinePatterns.add(
"backtick",
@@ -1648,6 +1663,7 @@ class Bugdown(markdown.Extension):
markdown.inlinepatterns.SimpleTagPattern(r'(\*)(?!\s+)([^\*^\n]+)(?<!\s)\*', 'em'),
'>strong')
def extend_block_formatting(self, md: markdown.Markdown) -> None:
for k in ('hashheader', 'setextheader', 'olist', 'ulist', 'indent'):
del md.parser.blockprocessors[k]
@@ -1659,19 +1675,27 @@ class Bugdown(markdown.Extension):
r'(^|\n)(?!(?:[ ]{0,3}>\s*(?:$|\n))*(?:$|\n))'
r'[ ]{0,3}>[ ]?(.*)')
def extend_avatars(self, md: markdown.Markdown) -> None:
# Note that !gravatar syntax should be deprecated long term.
md.inlinePatterns.add('avatar', Avatar(AVATAR_REGEX), '>backtick')
md.inlinePatterns.add('gravatar', Avatar(GRAVATAR_REGEX), '>backtick')
def extend_modal_links(self, md: markdown.Markdown) -> None:
md.inlinePatterns.add(
'modal_link',
ModalLink(r'!modal_link\((?P<relative_url>[^)]*), (?P<text>[^)]*)\)'),
'>avatar')
def extend_mentions(self, md: markdown.Markdown) -> None:
md.inlinePatterns.add('usermention', UserMentionPattern(mention.find_mentions), '>backtick')
md.inlinePatterns.add('usergroupmention',
UserGroupMentionPattern(mention.user_group_mentions),
'>backtick')
def extend_stream_links(self, md: markdown.Markdown) -> None:
md.inlinePatterns.add('stream', StreamPattern(verbose_compile(STREAM_LINK_REGEX)), '>backtick')
def extend_emojis(self, md: markdown.Markdown) -> None:
md.inlinePatterns.add(
'tex',
Tex(r'\B(?<!\$)\$\$(?P<body>[^\n_$](\\\$|[^$\n])*)\$\$(?!\$)\B'),
@@ -1679,6 +1703,8 @@ class Bugdown(markdown.Extension):
md.inlinePatterns.add('emoji', Emoji(EMOJI_REGEX), '<nl')
md.inlinePatterns.add('translate_emoticons', EmoticonTranslation(emoticon_regex), '>emoji')
md.inlinePatterns.add('unicodeemoji', UnicodeEmoji(unicode_emoji_regex), '_end')
def extend_misc(self, md: markdown.Markdown) -> None:
md.inlinePatterns.add('link', AtomicLinkPattern(markdown.inlinepatterns.LINK_RE, md), '>avatar')
for (pattern, format_string, id) in self.getConfig("realm_filters"):