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1 " Vim indent file
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2 " Language: Objective-C
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3 " Maintainer: Kazunobu Kuriyama <kazunobu.kuriyama@nifty.com>
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4 " Last Change: 2004 May 16
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5 "
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6
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7
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8 " Only load this indent file when no other was loaded.
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9 if exists("b:did_indent")
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10 finish
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11 endif
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12 let b:did_indent = 1
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13 setlocal cindent
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14
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15 " Set the function to do the work.
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16 setlocal indentexpr=GetObjCIndent()
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17
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18 " To make a colon (:) suggest an indentation other than a goto/swich label,
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19 setlocal indentkeys-=:
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20 setlocal indentkeys+=<:>
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21
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22 " Only define the function once.
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23 if exists("*GetObjCIndent")
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24 finish
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25 endif
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26
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27 function s:GetWidth(line, regexp)
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28 let end = matchend(a:line, a:regexp)
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29 let width = 0
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30 let i = 0
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31 while i < end
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32 if a:line[i] != "\t"
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33 let width = width + 1
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34 else
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35 let width = width + &ts - (width % &ts)
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36 endif
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37 let i = i + 1
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38 endwhile
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39 return width
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40 endfunction
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41
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42 function s:LeadingWhiteSpace(line)
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43 let end = strlen(a:line)
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44 let width = 0
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45 let i = 0
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46 while i < end
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47 let char = a:line[i]
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48 if char != " " && char != "\t"
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49 break
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50 endif
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51 if char != "\t"
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52 let width = width + 1
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53 else
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54 let width = width + &ts - (width % &ts)
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55 endif
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56 let i = i + 1
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57 endwhile
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58 return width
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59 endfunction
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60
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61
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62 function GetObjCIndent()
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63 let theIndent = cindent(v:lnum)
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64
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65 let prev_line = getline(v:lnum - 1)
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66 let cur_line = getline(v:lnum)
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67
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68 if prev_line !~# ":" || cur_line !~# ":"
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69 return theIndent
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70 endif
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71
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72 if prev_line !~# ";"
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73 let prev_colon_pos = s:GetWidth(prev_line, ":")
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74 let delta = s:GetWidth(cur_line, ":") - s:LeadingWhiteSpace(cur_line)
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75 let theIndent = prev_colon_pos - delta
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76 endif
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77
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78 return theIndent
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79 endfunction
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