" Vim indent file
" Language: Cucumber
" Maintainer: Tim Pope <[email protected]>
" Last Change: 2013 May 30

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

function! s:syn(lnum)
return synIDattr(synID(a:lnum,1+indent(a:lnum),1),'name')
endfunction

function! GetCucumberIndent()
let line = getline(prevnonblank(v:lnum-1))
let cline = getline(v:lnum)
let nline = getline(nextnonblank(v:lnum+1))
let syn = s:syn(prevnonblank(v:lnum-1))
let csyn = s:syn(v:lnum)
let nsyn = s:syn(nextnonblank(v:lnum+1))
if csyn ==# 'cucumberFeature' || cline =~# '^\s*Feature:'
" feature heading
return 0
elseif csyn ==# 'cucumberExamples' || cline =~# '^\s*\%(Examples\|Scenarios\):'
" examples heading
return 2 * &sw
elseif csyn =~# '^cucumber\%(Background\|Scenario\|ScenarioOutline\)$' || cline =~# '^\s*\%(Background\|Scenario\|Scenario Outline\):'
" background, scenario or outline heading
return &sw
elseif syn ==# 'cucumberFeature' || line =~# '^\s*Feature:'
" line after feature heading
return &sw
elseif syn ==# 'cucumberExamples' || line =~# '^\s*\%(Examples\|Scenarios\):'
" line after examples heading
return 3 * &sw
elseif syn =~# '^cucumber\%(Background\|Scenario\|ScenarioOutline\)$' || line =~# '^\s*\%(Background\|Scenario\|Scenario Outline\):'
" line after background, scenario or outline heading
return 2 * &sw
elseif cline =~# '^\s*[@#]' && (nsyn == 'cucumberFeature' || nline =~# '^\s*Feature:' || indent(prevnonblank(v:lnum-1)) <= 0)
" tag or comment before a feature heading
return 0
elseif cline =~# '^\s*@'
" other tags
return &sw
elseif cline =~# '^\s*[#|]' && line =~# '^\s*|'
" mid-table
" preserve indent
return indent(prevnonblank(v:lnum-1))
elseif cline =~# '^\s*|' && line =~# '^\s*[^|]'
" first line of a table, relative indent
return indent(prevnonblank(v:lnum-1)) + &sw
elseif cline =~# '^\s*[^|]' && line =~# '^\s*|'
" line after a table, relative unindent
return indent(prevnonblank(v:lnum-1)) - &sw
elseif cline =~# '^\s*#' && getline(v:lnum-1) =~ '^\s*$' && (nsyn =~# '^cucumber\%(Background\|Scenario\|ScenarioOutline\)$' || nline =~# '^\s*\%(Background\|Scenario\|Scenario Outline\):')
" comments on scenarios
return &sw
endif
return indent(prevnonblank(v:lnum-1))
endfunction

" vim:set sts=2 sw=2: