| " Vim syntax file |
| " Language: Haskell |
| " Maintainer: Haskell Cafe mailinglist <haskell-cafe@haskell.org> |
| " Last Change: 2008 Dec 15 |
| " 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. |
| " 2008 Dec 15: Added comments as contained element in import statements |
| |
| " quit when a syntax file was already loaded |
| if 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,hsLineComment,hsBlockComment |
| 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. |
| " Only when an item doesn't have highlighting yet |
| |
| hi def link hsModule hsStructure |
| hi def link hsImport Include |
| hi def link hsImportMod hsImport |
| hi def link hsInfix PreProc |
| hi def link hsStructure Structure |
| hi def link hsStatement Statement |
| hi def link hsConditional Conditional |
| hi def link hsSpecialChar SpecialChar |
| hi def link hsTypedef Typedef |
| hi def link hsVarSym hsOperator |
| hi def link hsConSym hsOperator |
| hi def link hsOperator Operator |
| if exists("hs_highlight_delimiters") |
| " Some people find this highlighting distracting. |
| hi def link hsDelimiter Delimiter |
| endif |
| hi def link hsSpecialCharError Error |
| hi def link hsString String |
| hi def link hsCharacter Character |
| hi def link hsNumber Number |
| hi def link hsFloat Float |
| hi def link hsConditional Conditional |
| hi def link hsLiterateComment hsComment |
| hi def link hsBlockComment hsComment |
| hi def link hsLineComment hsComment |
| hi def link hsComment Comment |
| hi def link hsPragma SpecialComment |
| hi def link hsBoolean Boolean |
| hi def link hsType Type |
| hi def link hsMaybe hsEnumConst |
| hi def link hsOrdering hsEnumConst |
| hi def link hsEnumConst Constant |
| hi def link hsDebug Debug |
| |
| hi def link cCppString hsString |
| hi def link cCommentStart hsComment |
| hi def link cCommentError hsError |
| hi def link cCommentStartError hsError |
| hi def link cInclude Include |
| hi def link cPreProc PreProc |
| hi def link cDefine Macro |
| hi def link cIncluded hsString |
| hi def link cError Error |
| hi def link cPreCondit PreCondit |
| hi def link cComment Comment |
| hi def link cCppSkip cCppOut |
| hi def link cCppOut2 cCppOut |
| hi def link cCppOut Comment |
| |
| |
| let b:current_syntax = "haskell" |
| |
| " Options for vi: ts=8 sw=2 sts=2 nowrap noexpandtab ft=vim |
