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vim-patch:a2c65809dafe

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runtime(java): Recognise string templates (vim/vim#14150)

As this is encouraged in the referenced JEPs, "to visually
distinguish a string template from a string literal, and
a text block template from a text block", the default
colours for java\%[Debug]StrTempl are made distinct from
java\%[Debug]String.

According to §3.2 Lexical Translations (JLS, c. 1996 or any
more recent version), line terminators, white space, and
comments are discarded before tokens are accepted. Since
a template expression comprises a template processor, a dot,
and a template, it may be visually appealing to break up
its head across a few lines whenever its tail already spans
multiple lines.  Curiously, no allowance for it is made in
the distributed tests for OpenJDK 21; the proposed regexp
patterns take in consideration a line terminator and white
space after a dot.

References:
https://openjdk.org/jeps/430 (Preview)
https://openjdk.org/jeps/459 (Second Preview)
https://openjdk.org/jeps/465

a2c65809da

Co-authored-by: Aliaksei Budavei <32549825+zzzyxwvut@users.noreply.github.com>
This commit is contained in:
Christian Clason 2024-03-10 10:19:15 +08:00
parent 6052b346f1
commit 3c66e285cc
1 changed files with 15 additions and 5 deletions
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20
runtime/syntax/java.vim
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@ -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 02
" Last Change: 2024 Mar 06
" Please check :help java.vim for comments on some of the options available.
@ -187,8 +187,8 @@ if exists("java_comment_strings")
syn match javaCommentCharacter contained "'\\[^']\{1,6\}'" contains=javaSpecialChar
syn match javaCommentCharacter contained "'\\''" contains=javaSpecialChar
syn match javaCommentCharacter contained "'[^\\]'"
syn cluster javaCommentSpecial add=javaCommentString,javaCommentCharacter,javaNumber
syn cluster javaCommentSpecial2 add=javaComment2String,javaCommentCharacter,javaNumber
syn cluster javaCommentSpecial add=javaCommentString,javaCommentCharacter,javaNumber,javaStrTempl
syn cluster javaCommentSpecial2 add=javaComment2String,javaCommentCharacter,javaNumber,javaStrTempl
endif
syn region javaComment start="/\*" end="\*/" contains=@javaCommentSpecial,javaTodo,@Spell
@ -234,6 +234,9 @@ syn match javaSpecialChar contained "\\\%(u\x\x\x\x\|[0-3]\o\o\|\o\o\=\|[bstn
syn region javaString start=+"+ end=+"+ end=+$+ contains=javaSpecialChar,javaSpecialError,@Spell
syn region javaString start=+"""[ \t\x0c\r]*$+hs=e+1 end=+"""+he=s-1 contains=javaSpecialChar,javaSpecialError,javaTextBlockError,@Spell
syn match javaTextBlockError +"""\s*"""+
syn region javaStrTemplEmbExp contained matchgroup=javaStrTempl start="\\{" end="}" contains=TOP
syn region javaStrTempl start=+\%(\.[[:space:]\n]*\)\@<="+ end=+"+ contains=javaStrTemplEmbExp,javaSpecialChar,javaSpecialError,@Spell
syn region javaStrTempl start=+\%(\.[[:space:]\n]*\)\@<="""[ \t\x0c\r]*$+hs=e+1 end=+"""+he=s-1 contains=javaStrTemplEmbExp,javaSpecialChar,javaSpecialError,javaTextBlockError,@Spell
" The next line is commented out, it can cause a crash for a long line
"syn match javaStringError +"\%([^"\\]\|\\.\)*$+
syn match javaCharacter "'[^']*'" contains=javaSpecialChar,javaSpecialCharError
@ -254,7 +257,7 @@ syn match javaNumber "\<0[xX]\%(\x\%(_*\x\)*\.\=\|\%(\x\%(_*\x\)*\)\=\.\x\%(
" Unicode characters
syn match javaSpecial "\\u\x\x\x\x"
syn cluster javaTop add=javaString,javaCharacter,javaNumber,javaSpecial,javaStringError,javaTextBlockError
syn cluster javaTop add=javaString,javaStrTempl,javaCharacter,javaNumber,javaSpecial,javaStringError,javaTextBlockError
if exists("java_highlight_functions")
if java_highlight_functions == "indent"
@ -280,7 +283,12 @@ if exists("java_highlight_debug")
syn match javaDebugSpecial contained "\\\%(u\x\x\x\x\|[0-3]\o\o\|\o\o\=\|[bstnfr"'\\]\)"
syn region javaDebugString contained start=+"+ end=+"+ contains=javaDebugSpecial
syn region javaDebugString contained start=+"""[ \t\x0c\r]*$+hs=e+1 end=+"""+he=s-1 contains=javaDebugSpecial,javaDebugTextBlockError
" The next line is commented out, it can cause a crash for a long line
" The highlight groups of java{StrTempl,Debug{,Paren,StrTempl}}\,
" share one colour by default. Do not conflate unrelated parens.
syn region javaDebugStrTemplEmbExp contained matchgroup=javaDebugStrTempl start="\\{" end="}" contains=javaComment,javaLineComment,javaDebug\%(Paren\)\@!.*
syn region javaDebugStrTempl contained start=+\%(\.[[:space:]\n]*\)\@<="+ end=+"+ contains=javaDebugStrTemplEmbExp,javaDebugSpecial
syn region javaDebugStrTempl contained start=+\%(\.[[:space:]\n]*\)\@<="""[ \t\x0c\r]*$+hs=e+1 end=+"""+he=s-1 contains=javaDebugStrTemplEmbExp,javaDebugSpecial,javaDebugTextBlockError
" The next line is commented out, it can cause a crash for a long line
" syn match javaDebugStringError contained +"\%([^"\\]\|\\.\)*$+
syn match javaDebugTextBlockError contained +"""\s*"""+
syn match javaDebugCharacter contained "'[^\\]'"
@ -307,6 +315,7 @@ if exists("java_highlight_debug")
hi def link javaDebug Debug
hi def link javaDebugString DebugString
hi def link javaDebugStrTempl Macro
hi def link javaDebugStringError javaError
hi def link javaDebugTextBlockError javaDebugStringError
hi def link javaDebugType DebugType
@ -376,6 +385,7 @@ hi def link javaSpecial Special
hi def link javaSpecialError Error
hi def link javaSpecialCharError Error
hi def link javaString String
hi def link javaStrTempl Macro
hi def link javaCharacter Character
hi def link javaSpecialChar SpecialChar
hi def link javaNumber Number