1" Vim indent file 2" Language: Vim script 3" Maintainer: Bram Moolenaar <[email protected]> 4" Last Change: 2021 Jan 06 5 6" Only load this indent file when no other was loaded. 7if exists("b:did_indent") 8 finish 9endif 10let b:did_indent = 1 11 12setlocal indentexpr=GetVimIndent() 13setlocal indentkeys+==end,=},=else,=cat,=finall,=END,0\\,0=\"\\\ 14setlocal indentkeys-=0# 15 16let b:undo_indent = "setl indentkeys< indentexpr<" 17 18" Only define the function once. 19if exists("*GetVimIndent") 20 finish 21endif 22let s:keepcpo= &cpo 23set cpo&vim 24 25function GetVimIndent() 26 let ignorecase_save = &ignorecase 27 try 28 let &ignorecase = 0 29 return GetVimIndentIntern() 30 finally 31 let &ignorecase = ignorecase_save 32 endtry 33endfunc 34 35let s:lineContPat = '^\s*\(\\\|"\\ \)' 36 37function GetVimIndentIntern() 38 " Find a non-blank line above the current line. 39 let lnum = prevnonblank(v:lnum - 1) 40 41 " If the current line doesn't start with '\' or '"\ ' and below a line that 42 " starts with '\' or '"\ ', use the indent of the line above it. 43 let cur_text = getline(v:lnum) 44 if cur_text !~ s:lineContPat 45 while lnum > 0 && getline(lnum) =~ s:lineContPat 46 let lnum = lnum - 1 47 endwhile 48 endif 49 50 " At the start of the file use zero indent. 51 if lnum == 0 52 return 0 53 endif 54 let prev_text = getline(lnum) 55 let found_cont = 0 56 57 " Add a 'shiftwidth' after :if, :while, :try, :catch, :finally, :function 58 " and :else. Add it three times for a line that starts with '\' or '"\ ' 59 " after a line that doesn't (or g:vim_indent_cont if it exists). 60 let ind = indent(lnum) 61 62 " In heredoc indenting works completely differently. 63 if has('syntax_items') 64 let syn_here = synIDattr(synID(v:lnum, 1, 1), "name") 65 if syn_here =~ 'vimLetHereDocStop' 66 " End of heredoc: use indent of matching start line 67 let lnum = v:lnum - 1 68 while lnum > 0 69 if synIDattr(synID(lnum, 1, 1), "name") !~ 'vimLetHereDoc' 70 return indent(lnum) 71 endif 72 let lnum -= 1 73 endwhile 74 return 0 75 endif 76 if syn_here =~ 'vimLetHereDoc' 77 if synIDattr(synID(lnum, 1, 1), "name") !~ 'vimLetHereDoc' 78 " First line in heredoc: increase indent 79 return ind + shiftwidth() 80 endif 81 " Heredoc continues: no change in indent 82 return ind 83 endif 84 endif 85 86 if cur_text =~ s:lineContPat && v:lnum > 1 && prev_text !~ s:lineContPat 87 let found_cont = 1 88 if exists("g:vim_indent_cont") 89 let ind = ind + g:vim_indent_cont 90 else 91 let ind = ind + shiftwidth() * 3 92 endif 93 elseif prev_text =~ '^\s*aug\%[roup]\s\+' && prev_text !~ '^\s*aug\%[roup]\s\+[eE][nN][dD]\>' 94 let ind = ind + shiftwidth() 95 else 96 " A line starting with :au does not increment/decrement indent. 97 if prev_text !~ '^\s*au\%[tocmd]' 98 let i = match(prev_text, '\(^\||\)\s*\(export\s\+\)\?\({\|\(if\|wh\%[ile]\|for\|try\|cat\%[ch]\|fina\|finall\%[y]\|fu\%[nction]\|def\|el\%[seif]\)\>\)') 99 if i >= 0 100 let ind += shiftwidth() 101 if strpart(prev_text, i, 1) == '|' && has('syntax_items') 102 \ && synIDattr(synID(lnum, i, 1), "name") =~ '\(Comment\|String\)$' 103 let ind -= shiftwidth() 104 endif 105 endif 106 endif 107 endif 108 109 " If the previous line contains an "end" after a pipe, but not in an ":au" 110 " command. And not when there is a backslash before the pipe. 111 " And when syntax HL is enabled avoid a match inside a string. 112 let i = match(prev_text, '[^\\]|\s*\(ene\@!\)') 113 if i > 0 && prev_text !~ '^\s*au\%[tocmd]' 114 if !has('syntax_items') || synIDattr(synID(lnum, i + 2, 1), "name") !~ '\(Comment\|String\)$' 115 let ind = ind - shiftwidth() 116 endif 117 endif 118 119 " For a line starting with "}" find the matching "{". If it is at the start 120 " of the line align with it, probably end of a block. 121 " Use the mapped "%" from matchit to find the match, otherwise we may match 122 " a { inside a comment or string. 123 if cur_text =~ '^\s*}' 124 if maparg('%') != '' 125 exe v:lnum 126 silent! normal % 127 if line('.') < v:lnum && getline('.') =~ '^\s*{' 128 let ind = indent('.') 129 endif 130 else 131 " todo: use searchpair() to find a match 132 endif 133 endif 134 135 " Below a line starting with "}" find the matching "{". If it is at the 136 " end of the line we must be below the end of a dictionary. 137 if prev_text =~ '^\s*}' 138 if maparg('%') != '' 139 exe lnum 140 silent! normal % 141 if line('.') == lnum || getline('.') !~ '^\s*{' 142 let ind = ind - shiftwidth() 143 endif 144 else 145 " todo: use searchpair() to find a match 146 endif 147 endif 148 149 " Below a line starting with "]" we must be below the end of a list. 150 if prev_text =~ '^\s*]' 151 let ind = ind - shiftwidth() 152 endif 153 154 " A line ending in "{"/"[} is most likely the start of a dict/list literal, 155 " indent the next line more. Not for a continuation line. 156 if prev_text =~ '[{[]\s*$' && !found_cont 157 let ind = ind + shiftwidth() 158 endif 159 160 " Subtract a 'shiftwidth' on a :endif, :endwhile, :catch, :finally, :endtry, 161 " :endfun, :enddef, :else and :augroup END. 162 if cur_text =~ '^\s*\(ene\@!\|cat\|finall\|el\|aug\%[roup]\s\+[eE][nN][dD]\)' 163 let ind = ind - shiftwidth() 164 endif 165 166 return ind 167endfunction 168 169let &cpo = s:keepcpo 170unlet s:keepcpo 171 172" vim:sw=2 173