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vim-patch:143686b: runtime(java): Fold adjacent "import" declarations (#36095)

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Also, distinguish (by abbreviating their names) and manage
foldable kinds of syntax items: blocks of code ("b"), plain
comments ("c"), Javadoc comments ("d"), adjacent "import"
declarations ("i").  Fold all qualifying items by default;
otherwise, do not fold items of explicitly delisted kinds.
For example,
------------------------------------------------------------
	let g:java_ignore_folding = "bcdi"
------------------------------------------------------------

Resolves zzzyxwvut/java-vim#12.

closes: vim/vim#18492

143686b3c4

Co-authored-by: Aliaksei Budavei <0x000c70@gmail.com>
This commit is contained in:
zeertzjq
2025-10-09 07:49:35 +08:00
committed by GitHub
parent f21295d596
commit c401999e47
2 changed files with 30 additions and 16 deletions
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29
runtime/syntax/java.vim
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@@ -3,7 +3,7 @@
" Maintainer: Aliaksei Budavei <0x000c70 AT gmail DOT com>
" Former Maintainer: Claudio Fleiner <claudio@fleiner.com>
" Repository: https://github.com/zzzyxwvut/java-vim.git
" Last Change: 2025 Oct 04
" Last Change: 2025 Oct 08
" Please check ":help java.vim" for comments on some of the options
" available.
@@ -59,6 +59,10 @@ else
endfunction
endif
function! s:ff.QueryFoldArgForSyntaxItems(kind) abort
return stridx(s:java_ignore_folding, a:kind) < 0 ? "fold" : ""
endfunction
if !exists("*s:ReportOnce")
function s:ReportOnce(message) abort
echomsg 'syntax/java.vim: ' . a:message
@@ -90,6 +94,8 @@ if exists("g:java_foldtext_show_first_or_second_line")
setlocal foldtext=JavaSyntaxFoldTextExpr()
endif
let s:java_ignore_folding = get(g:, 'java_ignore_folding', '')
" Admit the ASCII dollar sign to keyword characters (JLS-17, §3.8):
try
exec 'syntax iskeyword ' . &l:iskeyword . ',$'
@@ -121,6 +127,11 @@ syn match javaOperator "\<var\>\%(\s*(\)\@!"
syn match javaExternal "\<import\s\+module\>" contains=javaModuleImport
syn keyword javaModuleImport contained module
if !empty(s:ff.QueryFoldArgForSyntaxItems('i'))
" Group and fold adjacent "import" declarations.
syn region javaImportDeclBlock transparent start="\<import\s\+\K" skip="\<import\s\+\K" end="^" contains=javaExternal,@javaClasses,javaComment,javaLineComment fold
endif
" Since the yield statement, which could take a parenthesised operand,
" and _qualified_ yield methods get along within the switch block
" (JLS-17, §3.8), it seems futile to make a region definition for this
@@ -380,7 +391,7 @@ syn keyword javaLabelDefault contained default
syn keyword javaLabelVarType contained var
" Allow for the contingency of the enclosing region not being able to
" _keep_ its _end_, e.g. case ':':.
syn region javaLabelWhenClause contained transparent matchgroup=javaLabel start="\<when\>" matchgroup=NONE end=":"me=e-1 end="->"me=e-2 contains=TOP,javaExternal,javaLambdaDef
syn region javaLabelWhenClause contained transparent matchgroup=javaLabel start="\<when\>" matchgroup=NONE end=":"me=e-1 end="->"me=e-2 contains=TOP,javaImportDeclBlock,javaExternal,javaLambdaDef
" Comments
syn keyword javaTodo contained TODO FIXME XXX
@@ -396,7 +407,7 @@ if exists("g:java_comment_strings")
syn cluster javaCommentSpecial2 add=javaComment2String,javaCommentCharacter,javaNumber,javaStrTempl
endif
syn region javaComment matchgroup=javaCommentStart start="/\*" end="\*/" contains=@javaCommentSpecial,javaTodo,javaCommentError,javaSpaceError,@Spell fold
exec 'syn region javaComment matchgroup=javaCommentStart start="/\*" end="\*/" contains=@javaCommentSpecial,javaTodo,javaCommentError,javaSpaceError,@Spell ' . s:ff.QueryFoldArgForSyntaxItems('c')
syn match javaCommentStar contained "^\s*\*[^/]"me=e-1
syn match javaCommentStar contained "^\s*\*$"
syn match javaLineComment "//.*" contains=@javaCommentSpecial2,javaTodo,javaCommentMarkupTag,javaSpaceError,@Spell
@@ -510,7 +521,7 @@ if !exists("g:java_ignore_javadoc") && (s:with_html || s:with_markdown) && g:mai
endtry
if s:with_markdown
syn region javaMarkdownComment start="///" skip="^\s*///.*$" end="^" keepend contains=javaMarkdownCommentTitle,javaMarkdownShortcutLink,@javaMarkdown,@javaDocTags,javaTodo,@Spell nextgroup=javaMarkdownCommentTitle fold
exec 'syn region javaMarkdownComment start="///" skip="^\s*///.*$" end="^" keepend contains=javaMarkdownCommentTitle,javaMarkdownShortcutLink,@javaMarkdown,@javaDocTags,javaTodo,@Spell nextgroup=javaMarkdownCommentTitle ' . s:ff.QueryFoldArgForSyntaxItems('d')
syn match javaMarkdownCommentMask contained "^\s*///"
exec 'syn region javaMarkdownCommentTitle contained matchgroup=javaMarkdownComment start="\%(///.*\r\=\n\s*\)\@' . s:ff.PeekFor('javaMarkdownCommentTitle', 120) . '<!///" matchgroup=javaMarkdownCommentTitle end="\.$" end="\.[ \t\r]\@=" end="\n\%(\s*///\s*$\)\@=" end="\%(^\s*///\s*\)\@' . s:ff.PeekFor('javaMarkdownCommentTitle', 120) . '<=@"me=s-2,he=s-1 contains=javaMarkdownShortcutLink,@javaMarkdown,javaMarkdownCommentMask,javaTodo,@Spell,@javaDocTags'
exec 'syn region javaMarkdownCommentTitle contained matchgroup=javaMarkdownComment start="\%(///.*\r\=\n\s*\)\@' . s:ff.PeekFor('javaMarkdownCommentTitle', 120) . '<!///\s*\%({@return\>\)\@=" matchgroup=javaMarkdownCommentTitle end="}\%(\s*\.*\)*" contains=javaMarkdownShortcutLink,@javaMarkdown,javaMarkdownCommentMask,javaTodo,@Spell,@javaDocTags,javaTitleSkipBlock'
@@ -565,7 +576,7 @@ if !exists("g:java_ignore_javadoc") && (s:with_html || s:with_markdown) && g:mai
endif
if s:with_html
syn region javaDocComment start="/\*\*" end="\*/" keepend contains=javaCommentTitle,@javaHtml,@javaDocTags,javaTodo,javaCommentError,javaSpaceError,@Spell fold
exec 'syn region javaDocComment start="/\*\*" end="\*/" keepend contains=javaCommentTitle,@javaHtml,@javaDocTags,javaTodo,javaCommentError,javaSpaceError,@Spell ' . s:ff.QueryFoldArgForSyntaxItems('d')
exec 'syn region javaCommentTitle contained matchgroup=javaDocComment start="/\*\*" matchgroup=javaCommentTitle end="\.$" end="\.[ \t\r]\@=" end="\%(^\s*\**\s*\)\@' . s:ff.PeekFor('javaCommentTitle', 120) . '<=@"me=s-2,he=s-1 end="\*/"me=s-1,he=s-1 contains=@javaHtml,javaCommentStar,javaTodo,javaCommentError,javaSpaceError,@Spell,@javaDocTags'
syn region javaCommentTitle contained matchgroup=javaDocComment start="/\*\*\s*\r\=\n\=\s*\**\s*\%({@return\>\)\@=" matchgroup=javaCommentTitle end="}\%(\s*\.*\)*" contains=@javaHtml,javaCommentStar,javaTodo,javaCommentError,javaSpaceError,@Spell,@javaDocTags,javaTitleSkipBlock
syn region javaCommentTitle contained matchgroup=javaDocComment start="/\*\*\s*\r\=\n\=\s*\**\s*\%({@summary\>\)\@=" matchgroup=javaCommentTitle end="}" contains=@javaHtml,javaCommentStar,javaTodo,javaCommentError,javaSpaceError,@Spell,@javaDocTags,javaTitleSkipBlock
@@ -690,7 +701,7 @@ syn region javaString start=+"""[ \t\x0c\r]*$+hs=e+1 end=+"""+he=s-1 contains=
syn match javaTextBlockError +"""\s*"""+
if s:ff.IsAnyRequestedPreviewFeatureOf([430])
syn region javaStrTemplEmbExp contained matchgroup=javaStrTempl start="\\{" end="}" contains=TOP
syn region javaStrTemplEmbExp contained matchgroup=javaStrTempl start="\\{" end="}" contains=TOP,javaImportDeclBlock
exec 'syn region javaStrTempl start=+\%(\.[[:space:]\n]*\)\@' . s:ff.PeekFor('javaStrTempl', 80) . '<="+ end=+"+ contains=javaStrTemplEmbExp,javaSpecialChar,javaSpecialError,@Spell'
exec 'syn region javaStrTempl start=+\%(\.[[:space:]\n]*\)\@' . s:ff.PeekFor('javaStrTempl', 80) . '<="""[ \t\x0c\r]*$+hs=e+1 end=+"""+he=s-1 contains=javaStrTemplEmbExp,javaSpecialChar,javaSpecialError,javaTextBlockError,@Spell'
hi def link javaStrTempl Macro
@@ -751,7 +762,7 @@ if exists("g:java_highlight_functions")
" in order to not include javaFuncDef.
syn region javaParenE transparent matchgroup=javaParen start="(" end=")" contains=@javaEnumConstants,javaInParen
syn region javaParenE transparent matchgroup=javaParen start="\[" end="\]" contains=@javaEnumConstants
syn cluster javaEnumConstants contains=TOP,javaTopEnumDeclaration,javaFuncDef,javaParenT
syn cluster javaEnumConstants contains=TOP,javaTopEnumDeclaration,javaImportDeclBlock,javaFuncDef,javaParenT
unlet s:indent s:last
else
" This is the "style" variant (:help ft-java-syntax).
@@ -822,7 +833,7 @@ syn region javaBlockOther transparent matchgroup=javaBlockOtherStart start="{" e
" Try not to fold top-level-type bodies under assumption that there is
" but one such body.
exec 'syn region javaBlock transparent matchgroup=javaBlockStart start="\%(^\|^\S[^:]\+\)\@' . s:ff.PeekFor('javaBlock', 120) . '<!{" end="}" fold'
exec 'syn region javaBlock transparent matchgroup=javaBlockStart start="\%(^\|^\S[^:]\+\)\@' . s:ff.PeekFor('javaBlock', 120) . '<!{" end="}" ' . s:ff.QueryFoldArgForSyntaxItems('b')
" See "D.2.1 Anonymous Classes" at
" https://web.archive.org/web/20010821025330/java.sun.com/docs/books/jls/first_edition/html/1.1Update.html#12959.
@@ -966,7 +977,7 @@ endif
let b:spell_options = "contained"
let &cpo = s:cpo_save
unlet s:cpo_save s:ff s:with_html s:with_markdown
unlet s:cpo_save s:ff s:java_ignore_folding s:with_html s:with_markdown
" See ":help vim9-mix".
if !has("vim9script")