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1 " Vim indent file
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2 " Language: SDL
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48
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3 " Maintainer: Michael Piefel <entwurf@piefel.de>
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4 " Last Change: 10 December 2011
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5
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6 " Shamelessly stolen from the Vim-Script indent file
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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
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14 setlocal indentexpr=GetSDLIndent()
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15 setlocal indentkeys+==~end,=~state,*<Return>
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16
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17 " Only define the function once.
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18 if exists("*GetSDLIndent")
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19 " finish
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20 endif
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21
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48
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22 let s:cpo_save = &cpo
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23 set cpo&vim
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0
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24
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25 function! GetSDLIndent()
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26 " Find a non-blank line above the current line.
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27 let lnum = prevnonblank(v:lnum - 1)
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28
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29 " At the start of the file use zero indent.
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30 if lnum == 0
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31 return 0
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32 endif
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33
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34 let ind = indent(lnum)
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35 let virtuality = '^\s*\(\(virtual\|redefined\|finalized\)\s\+\)\=\s*'
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36
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37 " Add a single space to comments which use asterisks
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38 if getline(lnum) =~ '^\s*\*'
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39 let ind = ind - 1
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40 endif
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41 if getline(v:lnum) =~ '^\s*\*'
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42 let ind = ind + 1
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43 endif
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44
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45 " Add a 'shiftwidth' after states, different blocks, decision (and alternatives), inputs
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46 if (getline(lnum) =~? '^\s*\(start\|state\|system\|package\|connection\|channel\|alternative\|macro\|operator\|newtype\|select\|substructure\|decision\|generator\|refinement\|service\|method\|exceptionhandler\|asntype\|syntype\|value\|(.*):\|\(priority\s\+\)\=input\|provided\)'
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47 \ || getline(lnum) =~? virtuality . '\(process\|procedure\|block\|object\)')
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48 \ && getline(lnum) !~? 'end[[:alpha:]]\+;$'
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49 let ind = ind + &sw
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50 endif
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51
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52 " Subtract a 'shiftwidth' after states
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53 if getline(lnum) =~? '^\s*\(stop\|return\>\|nextstate\)'
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54 let ind = ind - &sw
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55 endif
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56
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57 " Subtract a 'shiftwidth' on on end (uncompleted line)
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58 if getline(v:lnum) =~? '^\s*end\>'
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59 let ind = ind - &sw
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60 endif
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61
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62 " Put each alternatives where the corresponding decision was
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63 if getline(v:lnum) =~? '^\s*\((.*)\|else\):'
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64 normal k
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65 let ind = indent(searchpair('^\s*decision', '', '^\s*enddecision', 'bW',
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66 \ 'synIDattr(synID(line("."), col("."), 0), "name") =~? "sdlString"'))
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67 endif
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68
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69 " Put each state where the preceding state was
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70 if getline(v:lnum) =~? '^\s*state\>'
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71 let ind = indent(search('^\s*start', 'bW'))
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72 endif
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73
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74 " Systems and packages are always in column 0
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75 if getline(v:lnum) =~? '^\s*\(\(end\)\=system\|\(end\)\=package\)'
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76 return 0;
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77 endif
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78
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79 " Put each end* where the corresponding begin was
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80 if getline(v:lnum) =~? '^\s*end[[:alpha:]]'
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81 normal k
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82 let partner=matchstr(getline(v:lnum), '\(' . virtuality . 'end\)\@<=[[:alpha:]]\+')
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83 let ind = indent(searchpair(virtuality . partner, '', '^\s*end' . partner, 'bW',
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84 \ 'synIDattr(synID(line("."), col("."), 0), "name") =~? "sdlString"'))
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85 endif
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86
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87 return ind
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88 endfunction
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89
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48
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90 let &cpo = s:cpo_save
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91 unlet s:cpo_save
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92
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93 " vim:sw=2
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