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Add support for interpolated strings, including $@ strings #40

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Add support for interpolated strings, including $@ strings #40

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38 changes: 33 additions & 5 deletions syntax/cs.vim
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Original file line number Diff line number Diff line change
Expand Up @@ -114,17 +114,14 @@ syn region csRegion matchgroup=csPreCondit start="^\s*#\s*region.*$"



" Strings and constants
" Constants
syn match csSpecialError contained "\\."
syn match csSpecialCharError contained "[^']"
" [1] 9.4.4.4 Character literals
syn match csSpecialChar contained +\\["\\'0abfnrtvx]+
" unicode characters
syn match csUnicodeNumber +\\\(u\x\{4}\|U\x\{8}\)+ contained contains=csUnicodeSpecifier
syn match csUnicodeSpecifier +\\[uU]+ contained
syn region csVerbatimString start=+@"+ end=+"+ skip=+""+ contains=csVerbatimSpec,@Spell
syn match csVerbatimSpec +@"+he=s+1 contained
syn region csString start=+"+ end=+"+ end=+$+ contains=csSpecialChar,csSpecialError,csUnicodeNumber,@Spell
syn match csCharacter "'[^']*'" contains=csSpecialChar,csSpecialCharError
syn match csCharacter "'\\''" contains=csSpecialChar
syn match csCharacter "'[^\\]'"
Expand All @@ -133,6 +130,26 @@ syn match csNumber "\(\<\d\+\.\d*\|\.\d\+\)\([eE][-+]\=\d\+\)\=[fFdD]\="
syn match csNumber "\<\d\+[eE][-+]\=\d\+[fFdD]\=\>"
syn match csNumber "\<\d\+\([eE][-+]\=\d\+\)\=[fFdD]\>"

" Strings
syn region csString start=+"+ end=+"+ end=+$+ contains=csSpecialChar,csSpecialError,csUnicodeNumber,@Spell
" The gymnastics with Internal below is used to highlight only the @, $ or $@
" that start a special string.
syn region csVerbatimString start=+@"+ end=+"+ contains=csVerbatimSpec
syn match csVerbatimSpec +@+ contained nextgroup=csVerbatimInternal
syn region csVerbatimInternal start=+"+ end=+"\@=+ skip=+""+ contained contains=csVerbatimQuote,@Spell

syn region csInterpolatedString start=+\$"+ end=+"+ end=+$+ contains=csInterpolatedSpec
syn match csInterpolatedSpec +\$+ contained nextgroup=csInterpolatedInternal
syn region csInterpolatedInternal start=+"+ end=+"\@=+ contained contains=csSpecialChar,csSpecialError,csUnicodeNumber,csInterpolation,@Spell

syn region csVerbatimInterpolated start=+\$@"+ end=+"+ contains=csVerbatimInterpolatedSpec
syn match csVerbatimInterpolatedSpec +\$@+ contained nextgroup=csVerbatimInterpolatedInt
syn region csVerbatimInterpolatedInt start=+"+ end=+"\@=+ skip=+""+ contained contains=csVerbatimQuote,csInterpolation,@Spell

syn region csInterpolation start=+{+ end=+}+ contains=csType,csTypeDecleration,csStorage,csInterfaceDecleration,csRepeat,csConditional,csLabel,csOperatorError,csGlobal,csLabel,csModifier,csConstant,csException,csUnspecifiedStatement,csUnsupportedStatement,csUnspecifiedKeyword,csTypeOf,csLinq,csAsync,csContextualStatement,csNewDecleration,csClass,csIface,csGeneric,csEnclosed,csInherits,csAttribute,csString,csNumber,csVerbatimString,csInterpString,csVerbatimInterp
syn match csVerbatimQuote +""+ contained


" The default highlighting.
hi def link csType Type
hi def link csTypeDecleration StorageClass
Expand All @@ -158,9 +175,20 @@ hi def link csComment Comment

hi def link csSpecialError Error
hi def link csSpecialCharError Error

hi def link csString String
hi def link csVerbatimString String
hi def link csVerbatimSpec SpecialChar
hi def link csVerbatimSpec SpecialChar
hi def link csVerbatimInternal String
hi def link csInterpolatedString String
hi def link csInterpolatedSpec SpecialChar
hi def link csInterpolatedInternal String
hi def link csVerbatimInterpolated String
hi def link csVerbatimInterpolatedSpec SpecialChar
hi def link csVerbatimInterpolatedInt String
hi def link csInterpolation SpecialChar
hi def link csVerbatimQuote SpecialChar

hi def link csPreCondit PreCondit
hi def link csCharacter Character
hi def link csSpecialChar SpecialChar
Expand Down