" Vim indent file " Language: YAML " Maintainer: Nikolai Pavlov " Last Update: Lukas Reineke " Last Change: 2020 Jun 07 " Only load this indent file when no other was loaded. if exists('b:did_indent') finish endif let s:save_cpo = &cpo set cpo&vim let b:did_indent = 1 setlocal indentexpr=GetYAMLIndent(v:lnum) setlocal indentkeys=!^F,o,O,0#,0},0],<:>,0- setlocal nosmartindent let b:undo_indent = 'setlocal indentexpr< indentkeys< smartindent<' " Only define the function once. if exists('*GetYAMLIndent') finish endif function s:FindPrevLessIndentedLine(lnum, ...) let prevlnum = prevnonblank(a:lnum-1) let curindent = a:0 ? a:1 : indent(a:lnum) while prevlnum \&& indent(prevlnum) >= curindent \&& getline(prevlnum) !~# '^\s*#' let prevlnum = prevnonblank(prevlnum-1) endwhile return prevlnum endfunction function s:FindPrevLEIndentedLineMatchingRegex(lnum, regex) let plilnum = s:FindPrevLessIndentedLine(a:lnum, indent(a:lnum)+1) while plilnum && getline(plilnum) !~# a:regex let plilnum = s:FindPrevLessIndentedLine(plilnum) endwhile return plilnum endfunction let s:mapkeyregex='\v^\s*\#@!\S@=%(\''%([^'']|\''\'')*\'''. \ '|\"%([^"\\]|\\.)*\"'. \ '|%(%(\:\ )@!.)*)\:%(\ |$)' let s:liststartregex='\v^\s*%(\-%(\ |$))' let s:c_ns_anchor_char = '\v%([\n\r\uFEFF \t,[\]{}]@!\p)' let s:c_ns_anchor_name = s:c_ns_anchor_char.'+' let s:c_ns_anchor_property = '\v\&'.s:c_ns_anchor_name let s:ns_word_char = '\v[[:alnum:]_\-]' let s:ns_tag_char = '\v%('.s:ns_word_char.'|[#/;?:@&=+$.~*''()])' let s:c_named_tag_handle = '\v\!'.s:ns_word_char.'+\!' let s:c_secondary_tag_handle = '\v\!\!' let s:c_primary_tag_handle = '\v\!' let s:c_tag_handle = '\v%('.s:c_named_tag_handle. \ '|'.s:c_secondary_tag_handle. \ '|'.s:c_primary_tag_handle.')' let s:c_ns_shorthand_tag = '\v'.s:c_tag_handle . s:ns_tag_char.'+' let s:c_non_specific_tag = '\v\!' let s:ns_uri_char = '\v%('.s:ns_word_char.'\v|[#/;?:@&=+$,.!~*''()[\]])' let s:c_verbatim_tag = '\v\!\<'.s:ns_uri_char.'+\>' let s:c_ns_tag_property = '\v'.s:c_verbatim_tag. \ '\v|'.s:c_ns_shorthand_tag. \ '\v|'.s:c_non_specific_tag let s:block_scalar_header = '\v[|>]%([+-]?[1-9]|[1-9]?[+-])?' function GetYAMLIndent(lnum) if a:lnum == 1 || !prevnonblank(a:lnum-1) return 0 endif let prevlnum = prevnonblank(a:lnum-1) let previndent = indent(prevlnum) let line = getline(a:lnum) if line =~# '^\s*#' && getline(a:lnum-1) =~# '^\s*#' " Comment blocks should have identical indent return previndent elseif line =~# '^\s*[\]}]' " Lines containing only closing braces should have previous indent return indent(s:FindPrevLessIndentedLine(a:lnum)) endif " Ignore comment lines when calculating indent while getline(prevlnum) =~# '^\s*#' let prevlnum = prevnonblank(prevlnum-1) if !prevlnum return previndent endif endwhile let prevline = getline(prevlnum) let previndent = indent(prevlnum) " Any examples below assume that shiftwidth=2 if prevline =~# '\v[{[:]$|[:-]\ [|>][+\-]?%(\s+\#.*|\s*)$' " Mapping key: " nested mapping: ... " " - { " key: [ " list value " ] " } " " - |- " Block scalar without indentation indicator return previndent+shiftwidth() elseif prevline =~# '\v[:-]\ [|>]%(\d+[+\-]?|[+\-]?\d+)%(\#.*|\s*)$' " - |+2 " block scalar with indentation indicator "#^^ indent+2, not indent+shiftwidth return previndent + str2nr(matchstr(prevline, \'\v([:-]\ [|>])@<=[+\-]?\d+%([+\-]?%(\s+\#.*|\s*)$)@=')) elseif prevline =~# '\v\"%([^"\\]|\\.)*\\$' " "Multiline string \ " with escaped end" let qidx = match(prevline, '\v\"%([^"\\]|\\.)*\\') return virtcol([prevlnum, qidx+1]) elseif line =~# s:liststartregex " List line should have indent equal to previous list line unless it was " caught by one of the previous rules return indent(s:FindPrevLEIndentedLineMatchingRegex(a:lnum, \ s:liststartregex)) elseif line =~# s:mapkeyregex " Same for line containing mapping key let prevmapline = s:FindPrevLEIndentedLineMatchingRegex(a:lnum, \ s:mapkeyregex) if getline(prevmapline) =~# '^\s*- ' return indent(prevmapline) + 2 else return indent(prevmapline) endif elseif prevline =~# '^\s*- ' " - List with " multiline scalar return previndent+2 elseif prevline =~# s:mapkeyregex . '\v\s*%(%('.s:c_ns_tag_property. \ '\v|'.s:c_ns_anchor_property. \ '\v|'.s:block_scalar_header. \ '\v)%(\s+|\s*%(\#.*)?$))*' " Mapping with: value " that is multiline scalar return previndent+shiftwidth() endif return previndent endfunction let &cpo = s:save_cpo