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[ruby/rdoc] Optimize RawLine by using a regexp instead of negative look-ahead rule

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This improves the performance in some cases.
`rdoc .../gems/sinatra-2.1.0/README.md` takes 10.5 sec. before this
change, and 7.1 sec. after this change.
`make rdoc` of ruby/ruby takes 19.3 sec. before this change, 18.1 sec.
after this change.

https://github.com/ruby/rdoc/commit/7cf8281e3e
This commit is contained in:
Yusuke Endoh 2021-12-28 11:49:09 +09:00 committed by Nobuyoshi Nakada
parent 6e65e04186
commit 08137c5dd9
1 changed files with 8 additions and 37 deletions
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45
lib/rdoc/markdown.rb
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@ -14918,7 +14918,7 @@ class RDoc::Markdown
return _tmp
end
# RawLine = (< (!"\r" !"\n" .)* @Newline > | < .+ > @Eof) { text }
# RawLine = (< /[^\r\n]*/ @Newline > | < .+ > @Eof) { text }
def _RawLine
_save = self.pos
@ -14930,36 +14930,7 @@ class RDoc::Markdown
_save2 = self.pos
while true # sequence
while true
_save4 = self.pos
while true # sequence
_save5 = self.pos
_tmp = match_string("\r")
_tmp = _tmp ? nil : true
self.pos = _save5
unless _tmp
self.pos = _save4
break
end
_save6 = self.pos
_tmp = match_string("\n")
_tmp = _tmp ? nil : true
self.pos = _save6
unless _tmp
self.pos = _save4
break
end
_tmp = get_byte
unless _tmp
self.pos = _save4
end
break
end # end sequence
break unless _tmp
end
_tmp = true
_tmp = scan(/\G(?-mix:[^\r\n]*)/)
unless _tmp
self.pos = _save2
break
@ -14977,10 +14948,10 @@ class RDoc::Markdown
break if _tmp
self.pos = _save1
_save7 = self.pos
_save3 = self.pos
while true # sequence
_text_start = self.pos
_save8 = self.pos
_save4 = self.pos
_tmp = get_byte
if _tmp
while true
@ -14989,18 +14960,18 @@ class RDoc::Markdown
end
_tmp = true
else
self.pos = _save8
self.pos = _save4
end
if _tmp
text = get_text(_text_start)
end
unless _tmp
self.pos = _save7
self.pos = _save3
break
end
_tmp = _Eof()
unless _tmp
self.pos = _save7
self.pos = _save3
end
break
end # end sequence
@ -16661,7 +16632,7 @@ class RDoc::Markdown
Rules[:_OptionallyIndentedLine] = rule_info("OptionallyIndentedLine", "Indent? Line")
Rules[:_StartList] = rule_info("StartList", "&. { [] }")
Rules[:_Line] = rule_info("Line", "@RawLine:a { a }")
Rules[:_RawLine] = rule_info("RawLine", "(< (!\"\\r\" !\"\\n\" .)* @Newline > | < .+ > @Eof) { text }")
Rules[:_RawLine] = rule_info("RawLine", "(< /[^\\r\\n]*/ @Newline > | < .+ > @Eof) { text }")
Rules[:_SkipBlock] = rule_info("SkipBlock", "(HtmlBlock | (!\"\#\" !SetextBottom1 !SetextBottom2 !@BlankLine @RawLine)+ @BlankLine* | @BlankLine+ | @RawLine)")
Rules[:_ExtendedSpecialChar] = rule_info("ExtendedSpecialChar", "&{ notes? } \"^\"")
Rules[:_NoteReference] = rule_info("NoteReference", "&{ notes? } RawNoteReference:ref { note_for ref }")