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Diffstat (limited to 'runtime/syntax/haskell.vim')
| -rw-r--r-- | runtime/syntax/haskell.vim | 193 |
1 files changed, 193 insertions, 0 deletions
diff --git a/runtime/syntax/haskell.vim b/runtime/syntax/haskell.vim new file mode 100644 index 000000000..21fcf81f5 --- /dev/null +++ b/runtime/syntax/haskell.vim @@ -0,0 +1,193 @@ +" Vim syntax file +" Language: Haskell +" Maintainer: Haskell Cafe mailinglist <haskell-cafe@haskell.org> +" Last Change: 2004 Feb 23 +" Original Author: John Williams <jrw@pobox.com> +" +" Thanks to Ryan Crumley for suggestions and John Meacham for +" pointing out bugs. Also thanks to Ian Lynagh and Donald Bruce Stewart +" for providing the inspiration for the inclusion of the handling +" of C preprocessor directives, and for pointing out a bug in the +" end-of-line comment handling. +" +" Options-assign a value to these variables to turn the option on: +" +" hs_highlight_delimiters - Highlight delimiter characters--users +" with a light-colored background will +" probably want to turn this on. +" hs_highlight_boolean - Treat True and False as keywords. +" hs_highlight_types - Treat names of primitive types as keywords. +" hs_highlight_more_types - Treat names of other common types as keywords. +" hs_highlight_debug - Highlight names of debugging functions. +" hs_allow_hash_operator - Don't highlight seemingly incorrect C +" preprocessor directives but assume them to be +" operators +" +" 2004 Feb 19: Added C preprocessor directive handling, corrected eol comments +" cleaned away literate haskell support (should be entirely in +" lhaskell.vim) +" 2004 Feb 20: Cleaned up C preprocessor directive handling, fixed single \ +" in eol comment character class +" 2004 Feb 23: Made the leading comments somewhat clearer where it comes +" to attribution of work. + +" Remove any old syntax stuff hanging around +if version < 600 + syn clear +elseif exists("b:current_syntax") + finish +endif + +" (Qualified) identifiers (no default highlighting) +syn match ConId "\(\<[A-Z][a-zA-Z0-9_']*\.\)\=\<[A-Z][a-zA-Z0-9_']*\>" +syn match VarId "\(\<[A-Z][a-zA-Z0-9_']*\.\)\=\<[a-z][a-zA-Z0-9_']*\>" + +" Infix operators--most punctuation characters and any (qualified) identifier +" enclosed in `backquotes`. An operator starting with : is a constructor, +" others are variables (e.g. functions). +syn match hsVarSym "\(\<[A-Z][a-zA-Z0-9_']*\.\)\=[-!#$%&\*\+/<=>\?@\\^|~.][-!#$%&\*\+/<=>\?@\\^|~:.]*" +syn match hsConSym "\(\<[A-Z][a-zA-Z0-9_']*\.\)\=:[-!#$%&\*\+./<=>\?@\\^|~:]*" +syn match hsVarSym "`\(\<[A-Z][a-zA-Z0-9_']*\.\)\=[a-z][a-zA-Z0-9_']*`" +syn match hsConSym "`\(\<[A-Z][a-zA-Z0-9_']*\.\)\=[A-Z][a-zA-Z0-9_']*`" + +" Reserved symbols--cannot be overloaded. +syn match hsDelimiter "(\|)\|\[\|\]\|,\|;\|_\|{\|}" + +" Strings and constants +syn match hsSpecialChar contained "\\\([0-9]\+\|o[0-7]\+\|x[0-9a-fA-F]\+\|[\"\\'&\\abfnrtv]\|^[A-Z^_\[\\\]]\)" +syn match hsSpecialChar contained "\\\(NUL\|SOH\|STX\|ETX\|EOT\|ENQ\|ACK\|BEL\|BS\|HT\|LF\|VT\|FF\|CR\|SO\|SI\|DLE\|DC1\|DC2\|DC3\|DC4\|NAK\|SYN\|ETB\|CAN\|EM\|SUB\|ESC\|FS\|GS\|RS\|US\|SP\|DEL\)" +syn match hsSpecialCharError contained "\\&\|'''\+" +syn region hsString start=+"+ skip=+\\\\\|\\"+ end=+"+ contains=hsSpecialChar +syn match hsCharacter "[^a-zA-Z0-9_']'\([^\\]\|\\[^']\+\|\\'\)'"lc=1 contains=hsSpecialChar,hsSpecialCharError +syn match hsCharacter "^'\([^\\]\|\\[^']\+\|\\'\)'" contains=hsSpecialChar,hsSpecialCharError +syn match hsNumber "\<[0-9]\+\>\|\<0[xX][0-9a-fA-F]\+\>\|\<0[oO][0-7]\+\>" +syn match hsFloat "\<[0-9]\+\.[0-9]\+\([eE][-+]\=[0-9]\+\)\=\>" + +" Keyword definitions. These must be patters instead of keywords +" because otherwise they would match as keywords at the start of a +" "literate" comment (see lhs.vim). +syn match hsModule "\<module\>" +syn match hsImport "\<import\>.*"he=s+6 contains=hsImportMod +syn match hsImportMod contained "\<\(as\|qualified\|hiding\)\>" +syn match hsInfix "\<\(infix\|infixl\|infixr\)\>" +syn match hsStructure "\<\(class\|data\|deriving\|instance\|default\|where\)\>" +syn match hsTypedef "\<\(type\|newtype\)\>" +syn match hsStatement "\<\(do\|case\|of\|let\|in\)\>" +syn match hsConditional "\<\(if\|then\|else\)\>" + +" Not real keywords, but close. +if exists("hs_highlight_boolean") + " Boolean constants from the standard prelude. + syn match hsBoolean "\<\(True\|False\)\>" +endif +if exists("hs_highlight_types") + " Primitive types from the standard prelude and libraries. + syn match hsType "\<\(Int\|Integer\|Char\|Bool\|Float\|Double\|IO\|Void\|Addr\|Array\|String\)\>" +endif +if exists("hs_highlight_more_types") + " Types from the standard prelude libraries. + syn match hsType "\<\(Maybe\|Either\|Ratio\|Complex\|Ordering\|IOError\|IOResult\|ExitCode\)\>" + syn match hsMaybe "\<Nothing\>" + syn match hsExitCode "\<\(ExitSuccess\)\>" + syn match hsOrdering "\<\(GT\|LT\|EQ\)\>" +endif +if exists("hs_highlight_debug") + " Debugging functions from the standard prelude. + syn match hsDebug "\<\(undefined\|error\|trace\)\>" +endif + + +" Comments +syn match hsLineComment "---*\([^-!#$%&\*\+./<=>\?@\\^|~].*\)\?$" +syn region hsBlockComment start="{-" end="-}" contains=hsBlockComment +syn region hsPragma start="{-#" end="#-}" + +" C Preprocessor directives. Shamelessly ripped from c.vim and trimmed +" First, see whether to flag directive-like lines or not +if (!exists("hs_allow_hash_operator")) + syn match cError display "^\s*\(%:\|#\).*$" +endif +" Accept %: for # (C99) +syn region cPreCondit start="^\s*\(%:\|#\)\s*\(if\|ifdef\|ifndef\|elif\)\>" skip="\\$" end="$" end="//"me=s-1 contains=cComment,cCppString,cCommentError +syn match cPreCondit display "^\s*\(%:\|#\)\s*\(else\|endif\)\>" +syn region cCppOut start="^\s*\(%:\|#\)\s*if\s\+0\+\>" end=".\@=\|$" contains=cCppOut2 +syn region cCppOut2 contained start="0" end="^\s*\(%:\|#\)\s*\(endif\>\|else\>\|elif\>\)" contains=cCppSkip +syn region cCppSkip contained start="^\s*\(%:\|#\)\s*\(if\>\|ifdef\>\|ifndef\>\)" skip="\\$" end="^\s*\(%:\|#\)\s*endif\>" contains=cCppSkip +syn region cIncluded display contained start=+"+ skip=+\\\\\|\\"+ end=+"+ +syn match cIncluded display contained "<[^>]*>" +syn match cInclude display "^\s*\(%:\|#\)\s*include\>\s*["<]" contains=cIncluded +syn cluster cPreProcGroup contains=cPreCondit,cIncluded,cInclude,cDefine,cCppOut,cCppOut2,cCppSkip,cCommentStartError +syn region cDefine matchgroup=cPreCondit start="^\s*\(%:\|#\)\s*\(define\|undef\)\>" skip="\\$" end="$" +syn region cPreProc matchgroup=cPreCondit start="^\s*\(%:\|#\)\s*\(pragma\>\|line\>\|warning\>\|warn\>\|error\>\)" skip="\\$" end="$" keepend + +syn region cComment matchgroup=cCommentStart start="/\*" end="\*/" contains=cCommentStartError,cSpaceError contained +syntax match cCommentError display "\*/" contained +syntax match cCommentStartError display "/\*"me=e-1 contained +syn region cCppString start=+L\="+ skip=+\\\\\|\\"\|\\$+ excludenl end=+"+ end='$' contains=cSpecial contained + +" Define the default highlighting. +" For version 5.7 and earlier: only when not done already +" For version 5.8 and later: only when an item doesn't have highlighting yet +if version >= 508 || !exists("did_hs_syntax_inits") + if version < 508 + let did_hs_syntax_inits = 1 + command -nargs=+ HiLink hi link <args> + else + command -nargs=+ HiLink hi def link <args> + endif + + HiLink hsModule hsStructure + HiLink hsImport Include + HiLink hsImportMod hsImport + HiLink hsInfix PreProc + HiLink hsStructure Structure + HiLink hsStatement Statement + HiLink hsConditional Conditional + HiLink hsSpecialChar SpecialChar + HiLink hsTypedef Typedef + HiLink hsVarSym hsOperator + HiLink hsConSym hsOperator + HiLink hsOperator Operator + if exists("hs_highlight_delimiters") + " Some people find this highlighting distracting. + HiLink hsDelimiter Delimiter + endif + HiLink hsSpecialCharError Error + HiLink hsString String + HiLink hsCharacter Character + HiLink hsNumber Number + HiLink hsFloat Float + HiLink hsConditional Conditional + HiLink hsLiterateComment hsComment + HiLink hsBlockComment hsComment + HiLink hsLineComment hsComment + HiLink hsComment Comment + HiLink hsPragma SpecialComment + HiLink hsBoolean Boolean + HiLink hsType Type + HiLink hsMaybe hsEnumConst + HiLink hsOrdering hsEnumConst + HiLink hsEnumConst Constant + HiLink hsDebug Debug + + HiLink cCppString hsString + HiLink cCommentStart hsComment + HiLink cCommentError hsError + HiLink cCommentStartError hsError + HiLink cInclude Include + HiLink cPreProc PreProc + HiLink cDefine Macro + HiLink cIncluded hsString + HiLink cError Error + HiLink cPreCondit PreCondit + HiLink cComment Comment + HiLink cCppSkip cCppOut + HiLink cCppOut2 cCppOut + HiLink cCppOut Comment + + delcommand HiLink +endif + +let b:current_syntax = "haskell" + +" Options for vi: ts=8 sw=2 sts=2 nowrap noexpandtab ft=vim |