neovim/runtime/autoload/javaformat.vim
Christian Clason 2f2f434613 vim-patch:85f054a: runtime(java): Recognise the CommonMark form (///) of Javadoc comments
Complement "g:java_ignore_javadoc" with "g:java_ignore_html"
and "g:java_ignore_markdown" to allow selectively disabling
the recognition of HTML and CommonMark respectively.

(Note that this is not a preview feature.)

======================== LIMITATION ========================

According to the syntactical details of JEP 467:

> Any leading whitespace and the three initial / characters
> are removed from each line.
>
> The lines are shifted left, by removing leading whitespace
> characters, until the non-blank line with the least
> leading whitespace has no remaining leading whitespace.
>
> Additional leading whitespace and any trailing whitespace
> in each line is preserved, because it may be significant.

the following example:
------------------------------------------------------------
///    A summary sentence.
///     A list:
///      - Item A.
///     - Item B.
///
///     Some code span, starting here `
///      1 + 2 ` and ending at the previous \`.
------------------------------------------------------------

should be interpreted as if it were written thus:
------------------------------------------------------------
///A summary sentence.
/// A list:
///  - Item A.
/// - Item B.
///
/// Some code span, starting here `
///  1 + 2 ` and ending at the previous \`.
------------------------------------------------------------

Since automatic line rewriting will not be pursued, parts of
such comments having significant whitespace may be ‘wrongly’
highlighted.  For convenience, a &fex function is defined to
‘correct’ it: g:javaformat#RemoveCommonMarkdownWhitespace()
(:help ft-java-plugin).

References:
https://openjdk.org/jeps/467
https://spec.commonmark.org/0.31.2

closes: vim/vim#15740

85f054aa3f

Co-authored-by: Aliaksei Budavei <0x000c70@gmail.com>
Co-authored-by: Tim Pope <code@tpope.net>
2024-10-01 07:33:24 +02:00

93 lines
2.3 KiB
VimL

" Vim formatting plugin file
" Language: Java
" Maintainer: Aliaksei Budavei <0x000c70 AT gmail DOT com>
" Repository: https://github.com/zzzyxwvut/java-vim.git
" Last Change: 2024 Sep 26
" Documented in ":help ft-java-plugin".
if &cp || exists("g:loaded_javaformat") || exists("g:java_ignore_javadoc") || exists("g:java_ignore_markdown")
finish
endif
let g:loaded_javaformat = 1
"""" STRIVE TO REMAIN COMPATIBLE FOR AT LEAST VIM 7.0.
function! javaformat#RemoveCommonMarkdownWhitespace() abort
if mode() != 'n'
return 0
endif
let pattern = '\(^\s*///\)\(\s*\)\(.*\)'
" E121 for v:numbermax before v8.2.2388.
" E15 for expr-<< before v8.2.5003.
let common = 0x7fffffff
let comments = []
for n in range(v:lnum, (v:lnum + v:count - 1))
let parts = matchlist(getline(n), pattern)
let whitespace = get(parts, 2, '')
let nonwhitespace = get(parts, 3, '')
if !empty(whitespace)
let common = min([common, strlen(whitespace)])
elseif !empty(nonwhitespace) || empty(parts)
" No whitespace prefix or not a Markdown comment.
return 0
endif
call add(comments, [whitespace, parts[1], nonwhitespace])
endfor
let cursor = v:lnum
for line in comments
call setline(cursor, join(line[1 :], strpart(line[0], common)))
let cursor += 1
endfor
return 0
endfunction
" See ":help vim9-mix".
if !has("vim9script")
finish
endif
def! g:javaformat#RemoveCommonMarkdownWhitespace(): number
if mode() != 'n'
return 0
endif
const pattern: string = '\(^\s*///\)\(\s*\)\(.*\)'
var common: number = v:numbermax
var comments: list<list<string>> = []
for n in range(v:lnum, (v:lnum + v:count - 1))
const parts: list<string> = matchlist(getline(n), pattern)
const whitespace: string = get(parts, 2, '')
const nonwhitespace: string = get(parts, 3, '')
if !empty(whitespace)
common = min([common, strlen(whitespace)])
elseif !empty(nonwhitespace) || empty(parts)
# No whitespace prefix or not a Markdown comment.
return 0
endif
add(comments, [whitespace, parts[1], nonwhitespace])
endfor
var cursor: number = v:lnum
for line in comments
setline(cursor, join(line[1 :], strpart(line[0], common)))
cursor += 1
endfor
return 0
enddef
" vim: fdm=syntax sw=4 ts=8 noet sta