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2152
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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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28379
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4 " Last Change: 2022 Apr 06
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5
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6 " Only load this indent file when no other was loaded.
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7 if exists("b:did_indent")
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8 finish
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9 endif
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10 let b:did_indent = 1
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11
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12 setlocal indentexpr=GetChaiScriptIndent()
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13 setlocal autoindent
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14
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15 let b:undo_indent = "setl ai< inde<"
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16
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17 " Only define the function once.
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18 if exists("*GetChaiScriptIndent")
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19 finish
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20 endif
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21
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22 function! GetChaiScriptIndent()
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23 " Find a non-blank line above the current line.
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24 let lnum = prevnonblank(v:lnum - 1)
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25
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26 " Hit the start of the file, use zero indent.
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27 if lnum == 0
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28 return 0
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29 endif
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30
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31 " Add a 'shiftwidth' after lines that start a block:
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32 " lines containing a {
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33 let ind = indent(lnum)
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34 let flag = 0
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35 let prevline = getline(lnum)
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36 if prevline =~ '^.*{.*'
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37 let ind = ind + shiftwidth()
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38 let flag = 1
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39 endif
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40
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41 " Subtract a 'shiftwidth' after lines containing a { followed by a }
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42 " to keep it balanced
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43 if flag == 1 && prevline =~ '.*{.*}.*'
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44 let ind = ind - shiftwidth()
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45 endif
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46
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47 " Subtract a 'shiftwidth' on lines ending with }
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48 if getline(v:lnum) =~ '^\s*\%(}\)'
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49 let ind = ind - shiftwidth()
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50 endif
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51
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52 return ind
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53 endfunction
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