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author atsuki
date Sat, 10 Nov 2007 15:07:22 +0900
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1 " Vim syntax file
2 " Language: awk, nawk, gawk, mawk
3 " Maintainer: Antonio Colombo <azc10@yahoo.com>
4 " Last Change: 2005 Mar 16
5
6 " AWK ref. is: Alfred V. Aho, Brian W. Kernighan, Peter J. Weinberger
7 " The AWK Programming Language, Addison-Wesley, 1988
8
9 " GAWK ref. is: Arnold D. Robbins
10 " Effective AWK Programming, Third Edition, O'Reilly, 2001
11
12 " MAWK is a "new awk" meaning it implements AWK ref.
13 " mawk conforms to the Posix 1003.2 (draft 11.3)
14 " definition of the AWK language which contains a few features
15 " not described in the AWK book, and mawk provides a small number of extensions.
16
17 " TODO:
18 " Dig into the commented out syntax expressions below.
19
20 " For version 5.x: Clear all syntax items
21 " For version 6.x: Quit when a syntax file was already loaded
22 if version < 600
23 syn clear
24 elseif exists("b:current_syntax")
25 finish
26 endif
27
28 " A bunch of useful Awk keywords
29 " AWK ref. p. 188
30 syn keyword awkStatement break continue delete exit
31 syn keyword awkStatement function getline next
32 syn keyword awkStatement print printf return
33 " GAWK ref. p. 117
34 syn keyword awkStatement nextfile
35 " AWK ref. p. 42, GAWK ref. p. 142-166
36 syn keyword awkFunction atan2 close cos exp fflush int log rand sin sqrt srand
37 syn keyword awkFunction gsub index length match split sprintf sub
38 syn keyword awkFunction substr system
39 " GAWK ref. p. 142-166
40 syn keyword awkFunction asort gensub mktime strftime strtonum systime
41 syn keyword awkFunction tolower toupper
42 syn keyword awkFunction and or xor compl lshift rshift
43 syn keyword awkFunction dcgettext bindtextdomain
44
45 syn keyword awkConditional if else
46 syn keyword awkRepeat while for
47
48 syn keyword awkTodo contained TODO
49
50 syn keyword awkPatterns BEGIN END
51 " AWK ref. p. 36
52 syn keyword awkVariables ARGC ARGV FILENAME FNR FS NF NR
53 syn keyword awkVariables OFMT OFS ORS RLENGTH RS RSTART SUBSEP
54 " GAWK ref. p. 120-126
55 syn keyword awkVariables ARGIND BINMODE CONVFMT ENVIRON ERRNO
56 syn keyword awkVariables FIELDWIDTHS IGNORECASE LINT PROCINFO
57 syn keyword awkVariables RT RLENGTH TEXTDOMAIN
58
59 syn keyword awkRepeat do
60
61 " Octal format character.
62 syn match awkSpecialCharacter display contained "\\[0-7]\{1,3\}"
63 syn keyword awkStatement func nextfile
64 " Hex format character.
65 syn match awkSpecialCharacter display contained "\\x[0-9A-Fa-f]\+"
66
67 syn match awkFieldVars "\$\d\+"
68
69 "catch errors caused by wrong parenthesis
70 syn region awkParen transparent start="(" end=")" contains=ALLBUT,awkParenError,awkSpecialCharacter,awkArrayElement,awkArrayArray,awkTodo,awkRegExp,awkBrktRegExp,awkBrackets,awkCharClass
71 syn match awkParenError display ")"
72 syn match awkInParen display contained "[{}]"
73
74 " 64 lines for complex &&'s, and ||'s in a big "if"
75 syn sync ccomment awkParen maxlines=64
76
77 " Search strings & Regular Expressions therein.
78 syn region awkSearch oneline start="^[ \t]*/"ms=e start="\(,\|!\=\~\)[ \t]*/"ms=e skip="\\\\\|\\/" end="/" contains=awkBrackets,awkRegExp,awkSpecialCharacter
79 syn region awkBrackets contained start="\[\^\]\="ms=s+2 start="\[[^\^]"ms=s+1 end="\]"me=e-1 contains=awkBrktRegExp,awkCharClass
80 syn region awkSearch oneline start="[ \t]*/"hs=e skip="\\\\\|\\/" end="/" contains=awkBrackets,awkRegExp,awkSpecialCharacter
81
82 syn match awkCharClass contained "\[:[^:\]]*:\]"
83 syn match awkBrktRegExp contained "\\.\|.\-[^]]"
84 syn match awkRegExp contained "/\^"ms=s+1
85 syn match awkRegExp contained "\$/"me=e-1
86 syn match awkRegExp contained "[?.*{}|+]"
87
88 " String and Character constants
89 " Highlight special characters (those which have a backslash) differently
90 syn region awkString start=+"+ skip=+\\\\\|\\"+ end=+"+ contains=awkSpecialCharacter,awkSpecialPrintf
91 syn match awkSpecialCharacter contained "\\."
92
93 " Some of these combinations may seem weird, but they work.
94 syn match awkSpecialPrintf contained "%[-+ #]*\d*\.\=\d*[cdefgiosuxEGX%]"
95
96 " Numbers, allowing signs (both -, and +)
97 " Integer number.
98 syn match awkNumber display "[+-]\=\<\d\+\>"
99 " Floating point number.
100 syn match awkFloat display "[+-]\=\<\d\+\.\d+\>"
101 " Floating point number, starting with a dot.
102 syn match awkFloat display "[+-]\=\<.\d+\>"
103 syn case ignore
104 "floating point number, with dot, optional exponent
105 syn match awkFloat display "\<\d\+\.\d*\(e[-+]\=\d\+\)\=\>"
106 "floating point number, starting with a dot, optional exponent
107 syn match awkFloat display "\.\d\+\(e[-+]\=\d\+\)\=\>"
108 "floating point number, without dot, with exponent
109 syn match awkFloat display "\<\d\+e[-+]\=\d\+\>"
110 syn case match
111
112 "syn match awkIdentifier "\<[a-zA-Z_][a-zA-Z0-9_]*\>"
113
114 " Arithmetic operators: +, and - take care of ++, and --
115 "syn match awkOperator "+\|-\|\*\|/\|%\|="
116 "syn match awkOperator "+=\|-=\|\*=\|/=\|%="
117 "syn match awkOperator "^\|^="
118
119 " Comparison expressions.
120 "syn match awkExpression "==\|>=\|=>\|<=\|=<\|\!="
121 "syn match awkExpression "\~\|\!\~"
122 "syn match awkExpression "?\|:"
123 "syn keyword awkExpression in
124
125 " Boolean Logic (OR, AND, NOT)
126 "syn match awkBoolLogic "||\|&&\|\!"
127
128 " This is overridden by less-than & greater-than.
129 " Put this above those to override them.
130 " Put this in a 'match "\<printf\=\>.*;\="' to make it not override
131 " less/greater than (most of the time), but it won't work yet because
132 " keywords allways have precedence over match & region.
133 " File I/O: (print foo, bar > "filename") & for nawk (getline < "filename")
134 "syn match awkFileIO contained ">"
135 "syn match awkFileIO contained "<"
136
137 " Expression separators: ';' and ','
138 syn match awkSemicolon ";"
139 syn match awkComma ","
140
141 syn match awkComment "#.*" contains=awkTodo
142
143 syn match awkLineSkip "\\$"
144
145 " Highlight array element's (recursive arrays allowed).
146 " Keeps nested array names' separate from normal array elements.
147 " Keeps numbers separate from normal array elements (variables).
148 syn match awkArrayArray contained "[^][, \t]\+\["me=e-1
149 syn match awkArrayElement contained "[^][, \t]\+"
150 syn region awkArray transparent start="\[" end="\]" contains=awkArray,awkArrayElement,awkArrayArray,awkNumber,awkFloat
151
152 " 10 should be enough.
153 " (for the few instances where it would be more than "oneline")
154 syn sync ccomment awkArray maxlines=10
155
156 " define the default highlighting
157 " For version 5.7 and earlier: only when not done already
158 " For version 5.8 and later: only when an item doesn't have highlightling yet
159 if version >= 508 || !exists("did_awk_syn_inits")
160 if version < 508
161 let did_awk_syn_inits = 1
162 command -nargs=+ HiLink hi link <args>
163 else
164 command -nargs=+ HiLink hi def link <args>
165 endif
166
167 HiLink awkConditional Conditional
168 HiLink awkFunction Function
169 HiLink awkRepeat Repeat
170 HiLink awkStatement Statement
171
172 HiLink awkString String
173 HiLink awkSpecialPrintf Special
174 HiLink awkSpecialCharacter Special
175
176 HiLink awkSearch String
177 HiLink awkBrackets awkRegExp
178 HiLink awkBrktRegExp awkNestRegExp
179 HiLink awkCharClass awkNestRegExp
180 HiLink awkNestRegExp Keyword
181 HiLink awkRegExp Special
182
183 HiLink awkNumber Number
184 HiLink awkFloat Float
185
186 HiLink awkFileIO Special
187 "HiLink awkOperator Special
188 "HiLink awkExpression Special
189 HiLink awkBoolLogic Special
190
191 HiLink awkPatterns Special
192 HiLink awkVariables Special
193 HiLink awkFieldVars Special
194
195 HiLink awkLineSkip Special
196 HiLink awkSemicolon Special
197 HiLink awkComma Special
198 "HiLink awkIdentifier Identifier
199
200 HiLink awkComment Comment
201 HiLink awkTodo Todo
202
203 " Change this if you want nested array names to be highlighted.
204 HiLink awkArrayArray awkArray
205 HiLink awkArrayElement Special
206
207 HiLink awkParenError awkError
208 HiLink awkInParen awkError
209 HiLink awkError Error
210
211 delcommand HiLink
212 endif
213
214 let b:current_syntax = "awk"
215
216 " vim: ts=8