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31383
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1 " Vim filetype indent file
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2 " Language: Zig
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3 " Upstream: https://github.com/ziglang/zig.vim
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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 if (!has("cindent") || !has("eval"))
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12 finish
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13 endif
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14
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15 setlocal cindent
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16
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17 " L0 -> 0 indent for jump labels (i.e. case statement in c).
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18 " j1 -> indenting for "javascript object declarations"
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19 " J1 -> see j1
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20 " w1 -> starting a new line with `(` at the same indent as `(`
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21 " m1 -> if `)` starts a line, match its indent with the first char of its
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22 " matching `(` line
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23 " (s -> use one indent, when starting a new line after a trailing `(`
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24 setlocal cinoptions=L0,m1,(s,j1,J1,l1
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25
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26 " cinkeys: controls what keys trigger indent formatting
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27 " 0{ -> {
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28 " 0} -> }
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29 " 0) -> )
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30 " 0] -> ]
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31 " !^F -> make CTRL-F (^F) reindent the current line when typed
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32 " o -> when <CR> or `o` is used
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33 " O -> when the `O` command is used
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34 setlocal cinkeys=0{,0},0),0],!^F,o,O
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35
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36 setlocal indentexpr=GetZigIndent(v:lnum)
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37
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38 let b:undo_indent = "setlocal cindent< cinkeys< cinoptions< indentexpr<"
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39
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40 function! GetZigIndent(lnum)
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41 let curretLineNum = a:lnum
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42 let currentLine = getline(a:lnum)
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43
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44 " cindent doesn't handle multi-line strings properly, so force no indent
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45 if currentLine =~ '^\s*\\\\.*'
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46 return -1
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47 endif
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48
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49 let prevLineNum = prevnonblank(a:lnum-1)
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50 let prevLine = getline(prevLineNum)
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51
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52 " for lines that look like
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53 " },
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54 " };
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55 " try treating them the same as a }
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56 if prevLine =~ '\v^\s*},$'
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57 if currentLine =~ '\v^\s*};$' || currentLine =~ '\v^\s*}$'
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58 return indent(prevLineNum) - 4
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59 endif
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60 return indent(prevLineNum-1) - 4
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61 endif
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62 if currentLine =~ '\v^\s*},$'
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63 return indent(prevLineNum) - 4
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64 endif
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65 if currentLine =~ '\v^\s*};$'
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66 return indent(prevLineNum) - 4
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67 endif
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68
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69
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70 " cindent doesn't handle this case correctly:
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71 " switch (1): {
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72 " 1 => true,
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73 " ~
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74 " ^---- indents to here
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75 if prevLine =~ '.*=>.*,$' && currentLine !~ '.*}$'
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76 return indent(prevLineNum)
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77 endif
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78
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79 return cindent(a:lnum)
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80 endfunction
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