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" Vim indent file
" Language: Cucumber
" Maintainer: Tim Pope <vimNOSPAM@tpope.org>
" Last Change: 2023 Dec 28
if exists("b:did_indent")
finish
endif
let b:did_indent = 1
setlocal autoindent
setlocal indentexpr=GetCucumberIndent()
setlocal indentkeys=o,O,*<Return>,<:>,0<Bar>,0#,=,!^F
let b:undo_indent = 'setl ai< inde< indk<'
" Only define the function once.
if exists("*GetCucumberIndent")
finish
endif
let s:headings = {
\ 'Feature': 'feature',
\ 'Rule': 'rule',
\ 'Background': 'bg_or_scenario',
\ 'Scenario': 'bg_or_scenario',
\ 'ScenarioOutline': 'bg_or_scenario',
\ 'Examples': 'examples',
\ 'Scenarios': 'examples'}
function! s:Line(lnum) abort
if getline(a:lnum) =~# ':'
let group = matchstr(synIDattr(synID(a:lnum,1+indent(a:lnum), 1), 'name'), '^cucumber\zs.*')
if !has_key(s:headings, group)
let group = substitute(matchstr(getline(a:lnum), '^\s*\zs\%([^:]\+\)\ze:\S\@!'), '\s\+', '', 'g')
endif
else
let group = ''
endif
let char = matchstr(getline(a:lnum), '^\s*\zs[[:punct:]]')
return {
\ 'lnum': a:lnum,
\ 'indent': indent(a:lnum),
\ 'heading': get(s:headings, group, ''),
\ 'tag': char ==# '@',
\ 'table': char ==# '|',
\ 'comment': char ==# '#',
\ }
endfunction
function! GetCucumberIndent(...) abort
let lnum = a:0 ? a:1 : v:lnum
let sw = shiftwidth()
let prev = s:Line(prevnonblank(lnum-1))
let curr = s:Line(lnum)
let next = s:Line(nextnonblank(lnum+1))
if curr.heading ==# 'feature'
" feature heading
return 0
elseif curr.heading ==# 'examples'
" examples heading
return 2 * sw
elseif curr.heading ==# 'bg_or_scenario'
" background, scenario or outline heading
return sw
elseif prev.heading ==# 'feature'
" line after feature heading
return sw
elseif prev.heading ==# 'examples'
" line after examples heading
return 3 * sw
elseif prev.heading ==# 'bg_or_scenario'
" line after background, scenario or outline heading
return 2 * sw
elseif (curr.tag || curr.comment) && (next.heading ==# 'feature' || prev.indent <= 0)
" tag or comment before a feature heading
return 0
elseif curr.tag
" other tags
return sw
elseif (curr.table || curr.comment) && prev.table
" mid-table
" preserve indent
return prev.indent
elseif curr.table && !prev.table
" first line of a table, relative indent
return prev.indent + sw
elseif !curr.table && prev.table
" line after a table, relative unindent
return prev.indent - sw
elseif curr.comment && getline(v:lnum-1) =~# '^\s*$' && next.heading ==# 'bg_or_scenario'
" comments on scenarios
return sw
endif
return prev.indent < 0 ? 0 : prev.indent
endfunction
" vim:set sts=2 sw=2:
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