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1 " Vim syntax file
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2 " Language: Rexx
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3 " Maintainer: Thomas Geulig <geulig@nentec.de>
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4 " Last Change: 2001 May 2
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5 " URL: http://mywebpage.netscape.com/sharpPeople/vim/syntax/rexx.vim
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6 "
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7 " Special Thanks to Dan Sharp <dwsharp@hotmail.com> for comments and additions
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8 " (and providing the webspace)
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9
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10 " For version 5.x: Clear all syntax items
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11 " For version 6.x: Quit when a syntax file was already loaded
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12 if version < 600
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13 syntax clear
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14 elseif exists("b:current_syntax")
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15 finish
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16 endif
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17
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18 syn case ignore
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19
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20 " A Keyword is the first symbol in a clause. A clause begins at the start
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21 " of a line or after a semicolon. THEN, ELSE, OTHERWISE, and colons are always
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22 " followed by an implied semicolon.
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23 syn match rexxClause "\(^\|;\|:\|then \|else \|otherwise \)\s*\w\+" contains=ALL
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24
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25 " Considered keywords when used together in a phrase and begin a clause
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26 syn match rexxKeyword contained "\<signal\( on \(error\|failure\|halt\|notready\|novalue\|syntax\|lostdigits\)\(\s\+name\)\=\)\=\>"
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27 syn match rexxKeyword contained "\<signal off \(error\|failure\|halt\|notready\|novalue\|syntax\|lostdigits\)\>"
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28 syn match rexxKeyword contained "\<call off \(error\|failure\|halt\|notready\)\>"
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29 syn match rexxKeyword contained "\<parse \(upper \)\=\(arg\|linein\|pull\|source\|var\|value\|version\)\>"
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30 syn match rexxKeyword contained "\<numeric \(digits\|form \(scientific\|engineering\|value\)\|fuzz\)\>"
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31 syn match rexxKeyword contained "\<\(address\|trace\)\( value\)\=\>"
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32 syn match rexxKeyword contained "\<procedure\( expose\)\=\>"
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33 syn match rexxKeyword contained "\<do\( forever\)\=\>"
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34
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35 " Another keyword phrase, separated to aid highlighting in rexxFunction
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36 syn match rexxKeyword2 contained "\<call\( on \(error\|failure\|halt\|notready\)\(\s\+name\)\=\)\=\>"
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37
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38 " Considered keywords when they begin a clause
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39 syn match rexxKeyword contained "\<\(arg\|drop\|end\|exit\|if\|interpret\|iterate\|leave\|nop\)\>"
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40 syn match rexxKeyword contained "\<\(options\|pull\|push\|queue\|return\|say\|select\|trace\)\>"
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41
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42 " Conditional phrases
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43 syn match rexxConditional "\(^\s*\| \)\(to\|by\|for\|until\|while\|then\|when\|otherwise\|else\)\( \|\s*$\)" contains=ALLBUT,rexxConditional
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44 syn match rexxConditional contained "\<\(to\|by\|for\|until\|while\|then\|when\|else\|otherwise\)\>"
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45
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46 " Assignments -- a keyword followed by an equal sign becomes a variable
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47 syn match rexxAssign "\<\w\+\s*=\s*" contains=rexxSpecialVariable
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48
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49 " Functions/Procedures
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50 syn match rexxFunction "\<\h\w*\(/\*\s*\*/\)*("me=e-1 contains=rexxComment,rexxConditional,rexxKeyword
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51 syn match rexxFunction "\<\(arg\|trace\)\(/\*\s*\*/\)*("me=e-1
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52 syn match rexxFunction "\<call\( on \(error\|failure\|halt\|notready\)\(\s\+name\)\=\)\=\>\s\+\w\+\>" contains=rexxKeyword2
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53
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54 " String constants
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55 syn region rexxString start=+"+ skip=+\\\\\|\\'+ end=+"+
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56 syn region rexxString start=+'+ skip=+\\\\\|\\"+ end=+'+
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57 syn match rexxCharacter +"'[^\\]'"+
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58
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59 " Catch errors caused by wrong parenthesis
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60 syn region rexxParen transparent start='(' end=')' contains=ALLBUT,rexxParenError,rexxTodo,rexxUserLabel,rexxKeyword
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61 syn match rexxParenError ")"
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62 syn match rexxInParen "[\\[\\]{}]"
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63
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64 " Comments
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65 syn region rexxComment start="/\*" end="\*/" contains=rexxTodo,rexxComment
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66 syn match rexxCommentError "\*/"
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67
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68 syn keyword rexxTodo contained TODO FIXME XXX
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69
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70 " Highlight User Labels
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71 syn match rexxUserLabel "\<\I\i*\s*:"me=e-1
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72
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73 " Special Variables
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74 syn keyword rexxSpecialVariable sigl rc result
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75 syn match rexxCompoundVariable "\<\w\+\.\w*\>"
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76
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77 if !exists("rexx_minlines")
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78 let rexx_minlines = 10
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79 endif
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80 exec "syn sync ccomment rexxComment minlines=" . rexx_minlines
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81
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82 " Define the default highlighting.
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83 " For version 5.7 and earlier: only when not done already
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84 " For version 5.8 and later: only when an item doesn't have highlighting yet
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85 if version >= 508 || !exists("did_rexx_syn_inits")
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86 if version < 508
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87 let did_rexx_syn_inits = 1
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88 command -nargs=+ HiLink hi link <args>
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89 else
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90 command -nargs=+ HiLink hi def link <args>
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91 endif
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92
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93 HiLink rexxUserLabel Function
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94 HiLink rexxCharacter Character
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95 HiLink rexxParenError rexxError
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96 HiLink rexxInParen rexxError
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97 HiLink rexxCommentError rexxError
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98 HiLink rexxError Error
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99 HiLink rexxKeyword Statement
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100 HiLink rexxKeyword2 rexxKeyword
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101 HiLink rexxFunction Function
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102 HiLink rexxString String
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103 HiLink rexxComment Comment
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104 HiLink rexxTodo Todo
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105 HiLink rexxSpecialVariable Special
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106 HiLink rexxConditional rexxKeyword
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107
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108 delcommand HiLink
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109 endif
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110
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111 let b:current_syntax = "rexx"
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112
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113 "vim: ts=8
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