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1 " Vim syntax file
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2 " Language: Yacc
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3 " Maintainer: Dr. Charles E. Campbell, Jr. <NdrOchipS@PcampbellAfamily.Mbiz>
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4 " Last Change: Nov 18, 2002
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5 " Version: 2
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6 " URL: http://www.erols.com/astronaut/vim/index.html#vimlinks_syntax
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7 "
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8 " Option:
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9 " yacc_uses_cpp : if this variable exists, then C++ is loaded rather than C
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10
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11 " For version 5.x: Clear all syntax items
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12 " For version 6.x: Quit when a syntax file was already loaded
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13 if version < 600
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14 syntax clear
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15 elseif exists("b:current_syntax")
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16 finish
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17 endif
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18
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19 " Read the C syntax to start with
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20 if version >= 600
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21 if exists("yacc_uses_cpp")
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22 runtime! syntax/cpp.vim
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23 else
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24 runtime! syntax/c.vim
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25 endif
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26 elseif exists("yacc_uses_cpp")
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27 so <sfile>:p:h/cpp.vim
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28 else
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29 so <sfile>:p:h/c.vim
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30 endif
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31
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32 " Clusters
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33 syn cluster yaccActionGroup contains=yaccDelim,cInParen,cTodo,cIncluded,yaccDelim,yaccCurlyError,yaccUnionCurly,yaccUnion,cUserLabel,cOctalZero,cCppOut2,cCppSkip,cErrInBracket,cErrInParen,cOctalError,cCommentStartError,cParenError
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34 syn cluster yaccUnionGroup contains=yaccKey,cComment,yaccCurly,cType,cStructure,cStorageClass,yaccUnionCurly
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35
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36 " Yacc stuff
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37 syn match yaccDelim "^\s*[:|;]"
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38 syn match yaccOper "@\d\+"
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39
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40 syn match yaccKey "^\s*%\(token\|type\|left\|right\|start\|ident\|nonassoc\)\>"
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41 syn match yaccKey "\s%\(prec\|expect\)\>"
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42 syn match yaccKey "\$\(<[a-zA-Z_][a-zA-Z_0-9]*>\)\=[\$0-9]\+"
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43 syn keyword yaccKeyActn yyerrok yyclearin
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44
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45 syn match yaccUnionStart "^%union" skipwhite skipnl nextgroup=yaccUnion
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46 syn region yaccUnion contained matchgroup=yaccCurly start="{" matchgroup=yaccCurly end="}" contains=@yaccUnionGroup
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47 syn region yaccUnionCurly contained matchgroup=yaccCurly start="{" matchgroup=yaccCurly end="}" contains=@yaccUnionGroup
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48 syn match yaccBrkt contained "[<>]"
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49 syn match yaccType "<[a-zA-Z_][a-zA-Z0-9_]*>" contains=yaccBrkt
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50 syn match yaccDefinition "^[A-Za-z][A-Za-z0-9_]*[ \t]*:"
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51
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52 " special Yacc separators
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53 syn match yaccSectionSep "^[ \t]*%%"
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54 syn match yaccSep "^[ \t]*%{"
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55 syn match yaccSep "^[ \t]*%}"
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56
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57 " I'd really like to highlight just the outer {}. Any suggestions???
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58 syn match yaccCurlyError "[{}]"
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59 syn region yaccAction matchgroup=yaccCurly start="{" end="}" contains=ALLBUT,@yaccActionGroup
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60
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61
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62 " Define the default highlighting.
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63 " For version 5.7 and earlier: only when not done already
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64 " For version 5.8 and later: only when an item doesn't have highlighting yet
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65 if version >= 508 || !exists("did_yacc_syn_inits")
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66 if version < 508
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67 let did_yacchdl_syn_inits = 1
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68 command -nargs=+ HiLink hi link <args>
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69 else
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70 command -nargs=+ HiLink hi def link <args>
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71 endif
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72
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73 " Internal yacc highlighting links
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74 HiLink yaccBrkt yaccStmt
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75 HiLink yaccKey yaccStmt
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76 HiLink yaccOper yaccStmt
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77 HiLink yaccUnionStart yaccKey
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78
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79 " External yacc highlighting links
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80 HiLink yaccCurly Delimiter
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81 HiLink yaccCurlyError Error
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82 HiLink yaccDefinition Function
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83 HiLink yaccDelim Function
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84 HiLink yaccKeyActn Special
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85 HiLink yaccSectionSep Todo
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86 HiLink yaccSep Delimiter
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87 HiLink yaccStmt Statement
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88 HiLink yaccType Type
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89
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90 " since Bram doesn't like my Delimiter :|
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91 HiLink Delimiter Type
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92
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93 delcommand HiLink
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94 endif
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95
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96 let b:current_syntax = "yacc"
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97
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98 " vim: ts=15
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