runtime(java): Recognise the {@snippet} documentation tag (#14271)
Remember that ‘code fragments are typically Java source
code, but they may also be fragments of properties files,
source code in other languages, or plain text.’ Therefore,
with these changes, markup tags are highlighted in the Java
source files (as external snippets) and in the {@snippet}
tags.
Also:
- Improve matching of the multi-line {@code} documentation
tag with any contained balanced braces.
- Recognise the {@literal} documentation tag.
- Highlight stray blanks in comments.
Related to an enhancement proposal for PCRE-like callouts
discussed at https://github.com/vim/vim/issues/11217.
References:
https://openjdk.org/jeps/413
https://docs.oracle.com/en/java/javase/21/docs/specs/javadoc/doc-comment-spec.html
Signed-off-by: Aliaksei Budavei <0x000c70@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>diff --git a/runtime/syntax/java.vim b/runtime/syntax/java.vim
index c059de6..fe0cabf 100644
--- a/runtime/syntax/java.vim
+++ b/runtime/syntax/java.vim
@@ -2,7 +2,7 @@
" Language: Java
" Maintainer: Claudio Fleiner <claudio@fleiner.com>
" URL: https://github.com/fleiner/vim/blob/master/runtime/syntax/java.vim
-" Last Change: 2024 Mar 06
+" Last Change: 2024 Mar 22
" Please check :help java.vim for comments on some of the options available.
@@ -191,10 +191,14 @@
syn cluster javaCommentSpecial2 add=javaComment2String,javaCommentCharacter,javaNumber,javaStrTempl
endif
-syn region javaComment start="/\*" end="\*/" contains=@javaCommentSpecial,javaTodo,@Spell
+syn region javaComment start="/\*" end="\*/" contains=@javaCommentSpecial,javaTodo,javaSpaceError,@Spell
syn match javaCommentStar contained "^\s*\*[^/]"me=e-1
syn match javaCommentStar contained "^\s*\*$"
-syn match javaLineComment "//.*" contains=@javaCommentSpecial2,javaTodo,@Spell
+syn match javaLineComment "//.*" contains=@javaCommentSpecial2,javaTodo,javaCommentMarkupTag,javaSpaceError,@Spell
+syn match javaCommentMarkupTag contained "@\%(end\|highlight\|link\|replace\|start\)\>" nextgroup=javaCommentMarkupTagAttr skipwhite
+syn match javaCommentMarkupTagAttr contained "\<region\>" nextgroup=javaCommentMarkupTagAttr skipwhite
+syn region javaCommentMarkupTagAttr contained transparent matchgroup=htmlArg start=/\<\%(re\%(gex\|gion\|placement\)\|substring\|t\%(arget\|ype\)\)\%(\s*=\)\@=/ matchgroup=htmlString end=/\%(=\s*\)\@<=\%("[^"]\+"\|'[^']\+'\|\%([.-]\|\k\)\+\)/ nextgroup=javaCommentMarkupTagAttr skipwhite oneline
+hi def link javaCommentMarkupTagAttr htmlArg
hi def link javaCommentString javaString
hi def link javaComment2String javaString
hi def link javaCommentCharacter javaCharacter
@@ -211,15 +215,19 @@
" here.
syntax spell default
- syn region javaDocComment start="/\*\*" end="\*/" keepend contains=javaCommentTitle,@javaHtml,javaDocTags,javaDocSeeTag,javaTodo,@Spell
- syn region javaCommentTitle contained matchgroup=javaDocComment start="/\*\*" matchgroup=javaCommentTitle keepend end="\.$" end="\.[ \t\r<&]"me=e-1 end="[^{]@"me=s-2,he=s-1 end="\*/"me=s-1,he=s-1 contains=@javaHtml,javaCommentStar,javaTodo,@Spell,javaDocTags,javaDocSeeTag
-
- syn region javaDocTags contained start="{@\(code\|link\|linkplain\|inherit[Dd]oc\|doc[rR]oot\|value\)" end="}"
+ syn region javaDocComment start="/\*\*" end="\*/" keepend contains=javaCommentTitle,@javaHtml,javaDocTags,javaDocSeeTag,javaDocCodeTag,javaDocSnippetTag,javaTodo,javaSpaceError,@Spell
+ syn region javaCommentTitle contained matchgroup=javaDocComment start="/\*\*" matchgroup=javaCommentTitle keepend end="\.$" end="\.[ \t\r<&]"me=e-1 end="[^{]@"me=s-2,he=s-1 end="\*/"me=s-1,he=s-1 contains=@javaHtml,javaCommentStar,javaTodo,javaSpaceError,@Spell,javaDocTags,javaDocSeeTag,javaDocCodeTag,javaDocSnippetTag
+ syn region javaDocTags contained start="{@\%(li\%(teral\|nk\%(plain\)\=\)\|inherit[Dd]oc\|doc[rR]oot\|value\)\>" end="}"
syn match javaDocTags contained "@\(param\|exception\|throws\|since\)\s\+\S\+" contains=javaDocParam
syn match javaDocParam contained "\s\S\+"
syn match javaDocTags contained "@\(version\|author\|return\|deprecated\|serial\|serialField\|serialData\)\>"
syn region javaDocSeeTag contained matchgroup=javaDocTags start="@see\s\+" matchgroup=NONE end="\_."re=e-1 contains=javaDocSeeTagParam
syn match javaDocSeeTagParam contained @"\_[^"]\+"\|<a\s\+\_.\{-}</a>\|\(\k\|\.\)*\(#\k\+\((\_[^)]\+)\)\=\)\=@ extend
+ syn region javaCodeSkipBlock contained transparent start="{\%(@code\>\)\@!" end="}" contains=javaCodeSkipBlock,javaDocCodeTag
+ syn region javaDocCodeTag contained start="{@code\>" end="}" contains=javaDocCodeTag,javaCodeSkipBlock
+ syn region javaDocSnippetTagAttr contained transparent matchgroup=htmlArg start=/\<\%(class\|file\|id\|lang\|region\)\%(\s*=\)\@=/ matchgroup=htmlString end=/:$/ end=/\%(=\s*\)\@<=\%("[^"]\+"\|'[^']\+'\|\%([.-]\|\k\)\+\)/ nextgroup=javaDocSnippetTagAttr skipwhite skipnl
+ syn region javaSnippetSkipBlock contained transparent start="{\%(@snippet\>\)\@!" end="}" contains=javaSnippetSkipBlock,javaDocSnippetTag,javaCommentMarkupTag
+ syn region javaDocSnippetTag contained start="{@snippet\>" end="}" contains=javaDocSnippetTag,javaSnippetSkipBlock,javaDocSnippetTagAttr,javaCommentMarkupTag
syntax case match
endif
@@ -404,6 +412,8 @@
hi def link javaCommentTitle SpecialComment
hi def link javaDocTags Special
+hi def link javaDocCodeTag Special
+hi def link javaDocSnippetTag Special
hi def link javaDocParam Function
hi def link javaDocSeeTagParam Function
hi def link javaCommentStar javaComment
@@ -413,6 +423,8 @@
hi def link htmlComment Special
hi def link htmlCommentPart Special
+hi def link htmlArg Type
+hi def link htmlString String
hi def link javaSpaceError Error
if s:isModuleInfoDeclarationCurrentBuffer()