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vim-patch:2307945: runtime(java): Optionally recognise all primitive constants in _switch-case_ labels

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Define "g:java_syntax_previews" and include number 455 in
its list to enable this recognition:
------------------------------------------------------------
	let g:java_syntax_previews = [455]
------------------------------------------------------------

Reference:
https://openjdk.org/jeps/455

closes: vim/vim#15698

23079450a8

Co-authored-by: Aliaksei Budavei <0x000c70@gmail.com>
This commit is contained in:
Christian Clason 2024-09-19 18:56:19 +02:00
parent 674c1aac11
commit f5883e0d45
2 changed files with 15 additions and 8 deletions
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3
runtime/doc/syntax.txt
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@ -1704,10 +1704,11 @@ cycles for such a feature to become either integrated into the platform or
withdrawn from this effort. To cater for early adopters, there is optional
support in Vim for syntax related preview features that are implemented. You
can request it by specifying a list of preview feature numbers as follows: >
:let g:java_syntax_previews = [430]
:let g:java_syntax_previews = [455]
The supported JEP numbers are to be drawn from this table:
`430`: String Templates [JDK 21]
`455`: Primitive types in Patterns, instanceof, and switch
Note that as soon as the particular preview feature will have been integrated
into the Java platform, its entry will be removed from the table and related

18
runtime/syntax/java.vim
View File

@ -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: 2024 Sep 11
" Last Change: 2024 Sep 18
" Please check :help java.vim for comments on some of the options available.
@ -283,19 +283,27 @@ if exists("g:java_space_errors")
endif
exec 'syn match javaUserLabel "^\s*\<\K\k*\>\%(\<default\>\)\@' . s:ff.Peek('7', '') . '<!\s*::\@!"he=e-1'
if s:ff.IsRequestedPreviewFeature(455)
syn region javaLabelRegion transparent matchgroup=javaLabel start="\<case\>" matchgroup=NONE end=":\|->" contains=javaBoolean,javaNumber,javaCharacter,javaString,javaConstant,@javaClasses,javaGenerics,javaType,javaLabelDefault,javaLabelVarType,javaLabelWhenClause
else
syn region javaLabelRegion transparent matchgroup=javaLabel start="\<case\>" matchgroup=NONE end=":\|->" contains=javaLabelCastType,javaLabelNumber,javaCharacter,javaString,javaConstant,@javaClasses,javaGenerics,javaLabelDefault,javaLabelVarType,javaLabelWhenClause
syn keyword javaLabelCastType contained char byte short int
syn match javaLabelNumber contained "\<0\>[lL]\@!"
syn match javaLabelNumber contained "\<\%(0\%([xX]\x\%(_*\x\)*\|_*\o\%(_*\o\)*\|[bB][01]\%(_*[01]\)*\)\|[1-9]\%(_*\d\)*\)\>[lL]\@!"
hi def link javaLabelCastType javaType
hi def link javaLabelNumber javaNumber
endif
syn region javaLabelRegion transparent matchgroup=javaLabel start="\<default\>\%(\s*\%(:\|->\)\)\@=" matchgroup=NONE end=":\|->" oneline
" Consider grouped _default_ _case_ labels, i.e.
" case null, default ->
" case null: default:
syn keyword javaLabelDefault contained default
syn keyword javaLabelVarType contained var
syn keyword javaLabelCastType contained char byte short int
" 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 match javaLabelNumber contained "\<0\>[lL]\@!"
syn match javaLabelNumber contained "\<\%(0\%([xX]\x\%(_*\x\)*\|_*\o\%(_*\o\)*\|[bB][01]\%(_*[01]\)*\)\|[1-9]\%(_*\d\)*\)\>[lL]\@!"
" Comments
syn keyword javaTodo contained TODO FIXME XXX
@ -692,8 +700,6 @@ hi def link javaUserLabelRef javaUserLabel
hi def link javaLabel Label
hi def link javaLabelDefault javaLabel
hi def link javaLabelVarType javaOperator
hi def link javaLabelNumber javaNumber
hi def link javaLabelCastType javaType
hi def link javaComment Comment
hi def link javaCommentStar javaComment