1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
|
" Vim syntax file
" Language: Haskell
" Maintainer: John Williams <jrw@pobox.com>
" Last Change: 2001 Sep 02
" Thanks to Ryan Crumley for suggestions and John Meacham for
" pointing out bugs.
"
" 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.
" 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="#-}"
" Literate comments--any line not starting with '>' is a comment.
if exists("b:hs_literate_comments")
syn region hsLiterateComment start="^" end="^>"
endif
if !exists("hs_minlines")
let hs_minlines = 50
endif
exec "syn sync lines=" . hs_minlines
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
hi link hsModule hsStructure
hi link hsImport Include
hi link hsImportMod hsImport
hi link hsInfix PreProc
hi link hsStructure Structure
hi link hsStatement Statement
hi link hsConditional Conditional
hi link hsSpecialChar SpecialChar
hi link hsTypedef Typedef
hi link hsVarSym hsOperator
hi link hsConSym hsOperator
hi link hsOperator Operator
if exists("hs_highlight_delimiters")
" Some people find this highlighting distracting.
hi link hsDelimiter Delimiter
endif
hi link hsSpecialCharError Error
hi link hsString String
hi link hsCharacter Character
hi link hsNumber Number
hi link hsFloat Float
hi link hsConditional Conditional
hi link hsLiterateComment hsComment
hi link hsBlockComment hsComment
hi link hsLineComment hsComment
hi link hsComment Comment
hi link hsPragma SpecialComment
hi link hsBoolean Boolean
hi link hsType Type
hi link hsMaybe hsEnumConst
hi link hsOrdering hsEnumConst
hi link hsEnumConst Constant
hi link hsDebug Debug
delcommand HiLink
endif
let b:current_syntax = "haskell"
" Options for vi: ts=8 sw=2 sts=2 nowrap noexpandtab ft=vim
|
