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1 " Vim indent file
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2 " Language: Perl 6
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3 " Maintainer: Andy Lester <andy@petdance.com>
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4 " URL: http://github.com/petdance/vim-perl/tree/master
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5 " Last Change: 2009-07-04
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6 " Contributors: Andy Lester <andy@petdance.com>
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7 " Hinrik Örn Sigurðsson <hinrik.sig@gmail.com>
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8 "
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9 " Adapted from Perl indent file by Rafael Garcia-Suarez <rgarciasuarez@free.fr>
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10
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11 " Suggestions and improvements by :
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12 " Aaron J. Sherman (use syntax for hints)
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13 " Artem Chuprina (play nice with folding)
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14 " TODO:
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15 " This file still relies on stuff from the Perl 5 syntax file, which Perl 6
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16 " does not use.
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17 "
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18 " Things that are not or not properly indented (yet) :
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19 " - Continued statements
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20 " print "foo",
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21 " "bar";
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22 " print "foo"
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23 " if bar();
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24 " - Multiline regular expressions (m//x)
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25 " (The following probably needs modifying the perl syntax file)
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26 " - qw() lists
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27 " - Heredocs with terminators that don't match \I\i*
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28
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29 " Only load this indent file when no other was loaded.
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30 if exists("b:did_indent")
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31 finish
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32 endif
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33 let b:did_indent = 1
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34
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35 " Is syntax highlighting active ?
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36 let b:indent_use_syntax = has("syntax")
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37
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38 setlocal indentexpr=GetPerl6Indent()
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39
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40 " we reset it first because the Perl 5 indent file might have been loaded due
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41 " to a .pl/pm file extension, and indent files don't clean up afterwards
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42 setlocal indentkeys&
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43
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44 setlocal indentkeys+=0=,0),0],0>,0»,0=or,0=and
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45 if !b:indent_use_syntax
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46 setlocal indentkeys+=0=EO
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47 endif
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48
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49 " Only define the function once.
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50 if exists("*GetPerl6Indent")
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51 finish
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52 endif
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53
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54 let s:cpo_save = &cpo
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55 set cpo-=C
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56
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57 function GetPerl6Indent()
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58
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59 " Get the line to be indented
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60 let cline = getline(v:lnum)
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61
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62 " Indent POD markers to column 0
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63 if cline =~ '^\s*=\L\@!'
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64 return 0
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65 endif
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66
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67 " Don't reindent coments on first column
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68 if cline =~ '^#'
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69 return 0
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70 endif
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71
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72 " Get current syntax item at the line's first char
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73 let csynid = ''
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74 if b:indent_use_syntax
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75 let csynid = synIDattr(synID(v:lnum,1,0),"name")
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76 endif
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77
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78 " Don't reindent POD and heredocs
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79 if csynid =~ "^p6Pod"
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80 return indent(v:lnum)
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81 endif
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82
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83
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84 " Now get the indent of the previous perl line.
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85
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86 " Find a non-blank line above the current line.
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87 let lnum = prevnonblank(v:lnum - 1)
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88 " Hit the start of the file, use zero indent.
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89 if lnum == 0
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90 return 0
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91 endif
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92 let line = getline(lnum)
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93 let ind = indent(lnum)
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94 " Skip heredocs, POD, and comments on 1st column
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95 if b:indent_use_syntax
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96 let skippin = 2
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97 while skippin
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98 let synid = synIDattr(synID(lnum,1,0),"name")
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99 if (synid =~ "^p6Pod" || synid =~ "p6Comment")
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100 let lnum = prevnonblank(lnum - 1)
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101 if lnum == 0
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102 return 0
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103 endif
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104 let line = getline(lnum)
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105 let ind = indent(lnum)
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106 let skippin = 1
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107 else
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108 let skippin = 0
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109 endif
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110 endwhile
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111 endif
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112
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113 if line =~ '[<«\[{(]\s*\(#[^)}\]»>]*\)\=$'
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114 let ind = ind + &sw
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115 endif
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116 if cline =~ '^\s*[)}\]»>]'
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117 let ind = ind - &sw
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118 endif
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119
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120 " Indent lines that begin with 'or' or 'and'
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121 if cline =~ '^\s*\(or\|and\)\>'
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122 if line !~ '^\s*\(or\|and\)\>'
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123 let ind = ind + &sw
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124 endif
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125 elseif line =~ '^\s*\(or\|and\)\>'
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126 let ind = ind - &sw
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127 endif
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128
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129 return ind
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130
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131 endfunction
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132
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133 let &cpo = s:cpo_save
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134 unlet s:cpo_save
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135
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136 " vim:ts=8:sts=4:sw=4:expandtab:ft=vim
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