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1 " Vim syntax file
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2 " Language: R (GNU S)
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3 " Maintainer: Tom Payne <tom@tompayne.org>
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4 " Last Change: 2003 May 11
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5 " Filenames: *.r
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6 " URL: http://www.tompayne.org/vim/syntax/r.vim
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7
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8 " For version 5.x: Clear all syntax items
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9 " For version 6.x: Quit when a syntax file was already loaded
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10 if version < 600
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11 syntax clear
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12 elseif exists("b:current_syntax")
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13 finish
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14 endif
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15
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16 if version >= 600
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17 setlocal iskeyword=@,48-57,_,.
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18 else
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19 set iskeyword=@,48-57,_,.
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20 endif
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21
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22 syn case match
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23
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24 " Comment
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25 syn match rComment /\#.*/
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26
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27 " Constant
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28 " string enclosed in double quotes
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29 syn region rString start=/"/ skip=/\\\\\|\\"/ end=/"/
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30 " string enclosed in single quotes
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31 syn region rString start=/'/ skip=/\\\\\|\\'/ end=/'/
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32 " number with no fractional part or exponent
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33 syn match rNumber /\d\+/
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34 " floating point number with integer and fractional parts and optional exponent
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35 syn match rFloat /\d\+\.\d*\([Ee][-+]\=\d\+\)\=/
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36 " floating point number with no integer part and optional exponent
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37 syn match rFloat /\.\d\+\([Ee][-+]\=\d\+\)\=/
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38 " floating point number with no fractional part and optional exponent
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39 syn match rFloat /\d\+[Ee][-+]\=\d\+/
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40
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41 " Identifier
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42 " identifier with leading letter and optional following keyword characters
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43 syn match rIdentifier /\a\k*/
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44 " identifier with leading period, one or more digits, and at least one non-digit keyword character
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45 syn match rIdentifier /\.\d*\K\k*/
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46
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47 " Statement
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48 syn keyword rStatement break next return
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49 syn keyword rConditional if else
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50 syn keyword rRepeat for in repeat while
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51
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52 " Constant
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53 syn keyword rConstant LETTERS letters month.ab month.name pi
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54 syn keyword rConstant NULL
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55 syn keyword rBoolean FALSE TRUE
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56 syn keyword rNumber NA
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57
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58 " Type
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59 syn keyword rType array category character complex double function integer list logical matrix numeric vector
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60
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61 " Special
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62 syn match rDelimiter /[,;:]/
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63
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64 " Error
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65 syn region rRegion matchgroup=Delimiter start=/(/ matchgroup=Delimiter end=/)/ transparent contains=ALLBUT,rError,rBraceError,rCurlyError
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66 syn region rRegion matchgroup=Delimiter start=/{/ matchgroup=Delimiter end=/}/ transparent contains=ALLBUT,rError,rBraceError,rParenError
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67 syn region rRegion matchgroup=Delimiter start=/\[/ matchgroup=Delimiter end=/]/ transparent contains=ALLBUT,rError,rCurlyError,rParenError
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68 syn match rError /[)\]}]/
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69 syn match rBraceError /[)}]/ contained
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70 syn match rCurlyError /[)\]]/ contained
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71 syn match rParenError /[\]}]/ contained
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72
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73 " Define the default highlighting.
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74 " For version 5.7 and earlier: only when not done already
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75 " For version 5.8 and later: only when an item doesn't have highlighting yet
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76 if version >= 508 || !exists("did_r_syn_inits")
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77 if version < 508
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78 let did_r_syn_inits = 1
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79 command -nargs=+ HiLink hi link <args>
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80 else
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81 command -nargs=+ HiLink hi def link <args>
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82 endif
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83 HiLink rComment Comment
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84 HiLink rConstant Constant
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85 HiLink rString String
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86 HiLink rNumber Number
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87 HiLink rBoolean Boolean
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88 HiLink rFloat Float
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89 HiLink rStatement Statement
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90 HiLink rConditional Conditional
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91 HiLink rRepeat Repeat
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92 HiLink rIdentifier Identifier
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93 HiLink rType Type
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94 HiLink rDelimiter Delimiter
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95 HiLink rError Error
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96 HiLink rBraceError Error
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97 HiLink rCurlyError Error
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98 HiLink rParenError Error
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99 delcommand HiLink
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100 endif
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101
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102 let b:current_syntax="r"
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103
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104 " vim: ts=8 sw=2
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