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1 " Vim indent file
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2 " Language: ChaiScript
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3 " Maintainer: Jason Turner <lefticus 'at' gmail com>
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4
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5 " Only load this indent file when no other was loaded.
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6 if exists("b:did_indent")
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7 finish
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8 endif
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9 let b:did_indent = 1
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10
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11 setlocal indentexpr=GetChaiScriptIndent()
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12 setlocal autoindent
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13
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14 " Only define the function once.
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15 if exists("*GetChaiScriptIndent")
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16 finish
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17 endif
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18
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19 function! GetChaiScriptIndent()
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20 " Find a non-blank line above the current line.
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21 let lnum = prevnonblank(v:lnum - 1)
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22
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23 " Hit the start of the file, use zero indent.
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24 if lnum == 0
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25 return 0
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26 endif
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27
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28 " Add a 'shiftwidth' after lines that start a block:
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29 " lines containing a {
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30 let ind = indent(lnum)
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31 let flag = 0
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32 let prevline = getline(lnum)
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33 if prevline =~ '^.*{.*'
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34 let ind = ind + &shiftwidth
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35 let flag = 1
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36 endif
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37
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38 " Subtract a 'shiftwidth' after lines containing a { followed by a }
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39 " to keep it balanced
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40 if flag == 1 && prevline =~ '.*{.*}.*'
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41 let ind = ind - &shiftwidth
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42 endif
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43
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44 " Subtract a 'shiftwidth' on lines ending with }
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45 if getline(v:lnum) =~ '^\s*\%(}\)'
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46 let ind = ind - &shiftwidth
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47 endif
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48
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49 return ind
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50 endfunction
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