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1 " Vim indent file
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2 " Language: Ruby
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3 " Maintainer: Gavin Sinclair <gsinclair@soyabean.com.au>
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4 " Last Change: 2003 May 11
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5 " URL: www.soyabean.com.au/gavin/vim/index.html
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6 " Changes: (since vim 6.1)
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7 " - indentation after a line ending in comma, etc, (even in a comment) was
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8 " broken, now fixed (2002/08/14)
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9
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10 " Only load this indent file when no other was loaded.
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11 if exists("b:did_indent")
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12 finish
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13 endif
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14 let b:did_indent = 1
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15
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16 setlocal indentexpr=GetRubyIndent()
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17 setlocal nolisp
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18 setlocal nosmartindent
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19 setlocal autoindent
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20 setlocal indentkeys+==end,=else,=elsif,=when,=ensure,=rescue
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21
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22 " Only define the function once.
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23 if exists("*GetRubyIndent")
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24 finish
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25 endif
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26
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27 function GetRubyIndent()
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28 " Find a non-blank line above the current line.
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29 let lnum = prevnonblank(v:lnum - 1)
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30
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31 " At the start of the file use zero indent.
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32 if lnum == 0
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33 return 0
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34 endif
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35
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36 " If the line trailed with [*+,.(] - but not in a comment - trust the user
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37 if getline(lnum) =~ '\(\[^#\].*\)?\(\*\|\.\|+\|,\|(\)\(\s*#.*\)\=$'
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38 return -1
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39 endif
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40
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41 " Add a 'shiftwidth' after lines beginning with:
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42 " module, class, dev, if, for, while, until, else, elsif, case, when, {
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43 let ind = indent(lnum)
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44 let flag = 0
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45 if getline(lnum) =~ '^\s*\(module\>\|class\>\|def\>\|if\>\|for\>\|while\>\|until\>\|else\>\|elsif\>\|case\>\|when\>\|unless\|begin\|ensure\>\|rescue\>\)'
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46 \ || getline(lnum) =~ '{\s*$'
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47 \ || getline(lnum) =~ '\({\|\<do\>\).*|.*|\s*$'
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48 \ || getline(lnum) =~ '\<do\>\(\s*#.*\)\=$'
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49 let ind = ind + &sw
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50 let flag = 1
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51 endif
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52
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53 " Subtract a 'shiftwidth' after lines ending with
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54 " "end" when they begin with while, if, for, until
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55 if flag == 1 && getline(lnum) =~ '\<end\>\(\s*#.*\)\=$'
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56 let ind = ind - &sw
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57 endif
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58
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59 " Subtract a 'shiftwidth' on end, else and, elsif, when and }
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60 if getline(v:lnum) =~ '^\s*\(end\>\|else\>\|elsif\>\|when\>\|ensure\>\|rescue\>\|}\)'
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61 let ind = ind - &sw
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62 endif
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63
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64 return ind
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65 endfunction
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66
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67 " vim:sw=2
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