vim-polyglot/ftplugin/erlang.vim

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2013-09-12 11:32:53 -04:00
" Vim ftplugin file
" Language: Erlang
" Author: Oscar Hellström <oscar@oscarh.net>
" Contributors: Ricardo Catalinas Jiménez <jimenezrick@gmail.com>
" Eduardo Lopez (http://github.com/tapichu)
" License: Vim license
" Version: 2012/11/25
if exists('b:did_ftplugin')
finish
else
let b:did_ftplugin = 1
endif
if exists('s:did_function_definitions')
call s:SetErlangOptions()
finish
else
let s:did_function_definitions = 1
endif
if !exists('g:erlang_keywordprg')
let g:erlang_keywordprg = 'erl -man'
endif
if !exists('g:erlang_folding')
let g:erlang_folding = 0
endif
let s:erlang_fun_begin = '^\(\a\w*\|[''][^'']*['']\)(.*$'
let s:erlang_fun_end = '^[^%]*\.\s*\(%.*\)\?$'
function s:SetErlangOptions()
compiler erlang
if version >= 700
setlocal omnifunc=erlang_complete#Complete
endif
if g:erlang_folding
setlocal foldmethod=expr
setlocal foldexpr=GetErlangFold(v:lnum)
setlocal foldtext=ErlangFoldText()
endif
setlocal comments=:%%%,:%%,:%
setlocal commentstring=%%s
setlocal formatoptions+=ro
setlocal suffixesadd=.erl
let libs = substitute(system('which erl'), '/bin/erl', '/lib/erlang/lib/**/src/', '')
execute 'setlocal path+=' . libs
let &l:keywordprg = g:erlang_keywordprg
endfunction
function GetErlangFold(lnum)
let lnum = a:lnum
let line = getline(lnum)
if line =~ s:erlang_fun_end
return '<1'
endif
if line =~ s:erlang_fun_begin && foldlevel(lnum - 1) == 1
return '1'
endif
if line =~ s:erlang_fun_begin
return '>1'
endif
return '='
endfunction
function ErlangFoldText()
let line = getline(v:foldstart)
let foldlen = v:foldend - v:foldstart + 1
let lines = ' ' . foldlen . ' lines: ' . substitute(line, "[ \t]*", '', '')
if foldlen < 10
let lines = ' ' . lines
endif
let retval = '+' . v:folddashes . lines
return retval
endfunction
call s:SetErlangOptions()