function! zencoding#lang#haml#findTokens(str)
  return zencoding#lang#html#findTokens(a:str)
endfunction

function! zencoding#lang#haml#parseIntoTree(abbr, type)
  return zencoding#lang#html#parseIntoTree(a:abbr, a:type)
endfunction

function! zencoding#lang#haml#toString(settings, current, type, inline, filters, itemno, indent)
  let settings = a:settings
  let current = a:current
  let type = a:type
  let inline = a:inline
  let filters = a:filters
  let itemno = a:itemno
  let indent = a:indent
  let str = ""

  let comment_indent = ''
  let comment = ''
  let current_name = current.name
  let current_name = substitute(current.name, '\$$', itemno+1, '')
  if len(current.name) > 0
    let str .= '%' . current_name
    let tmp = ''
    for attr in keys(current.attr)
      let val = current.attr[attr]
      while val =~ '\$\([^#{]\|$\)'
        let val = substitute(val, '\(\$\+\)\([^{]\|$\)', '\=printf("%0".len(submatch(1))."d", itemno+1).submatch(2)', 'g')
      endwhile
      let attr = substitute(attr, '\$$', itemno+1, '')
      if attr == 'id'
        let str .= '#' . val
      elseif attr == 'class'
        let str .= '.' . substitute(val, ' ', '.', 'g')
      else
        if len(tmp) > 0 | let tmp .= ',' | endif
        let tmp .= ' :' . attr . ' => "' . val . '"'
      endif
    endfor
    if len(tmp)
      let str .= '{' . tmp . ' }'
    endif
    if stridx(','.settings.html.empty_elements.',', ','.current_name.',') != -1 && len(current.value) == 0
      let str .= "/"
    endif

    let inner = ''
    if len(current.value) > 0
      let lines = split(current.value[1:-2], "\n")
      let str .= " " . lines[0]
      for line in lines[1:]
        let str .= " |\n" . line
      endfor
    endif
    if len(current.child) == 1 && len(current.child[0].name) == 0
      let lines = split(current.child[0].value[1:-2], "\n")
      let str .= " " . lines[0]
      for line in lines[1:]
        let str .= " |\n" . line
      endfor
    elseif len(current.child) > 0
      for child in current.child
        let inner .= zencoding#toString(child, type, inline, filters)
      endfor
      let inner = substitute(inner, "\n", "\n  ", 'g')
      let inner = substitute(inner, "\n  $", "", 'g')
      let str .= "\n  " . inner
    endif
  endif
  let str .= "\n"
  return str
endfunction

function! zencoding#lang#haml#imageSize()
  let line = getline('.')
  let current = zencoding#lang#haml#parseTag(line)
  if empty(current) || !has_key(current.attr, 'src')
    return
  endif
  let fn = current.attr.src
  if fn !~ '^\(/\|http\)'
    let fn = simplify(expand('%:h') . '/' . fn)
  endif

  let [width, height] = zencoding#util#getImageSize(fn)
  if width == -1 && height == -1
    return
  endif
  let current.attr.width = width
  let current.attr.height = height
  let haml = zencoding#toString(current, 'haml', 1)
  call setline('.', substitute(matchstr(line, '^\s*') . haml, "\n", "", "g"))
endfunction

function! zencoding#lang#haml#parseTag(tag)
  let current = { 'name': '', 'attr': {}, 'child': [], 'snippet': '', 'multiplier': 1, 'parent': {}, 'value': '', 'pos': 0 }
  let mx = '%\([a-zA-Z][a-zA-Z0-9]*\)\s*\%({\(.*\)}\)'
  let match = matchstr(a:tag, mx)
  let current.name = substitute(match, mx, '\1', 'i')
  let attrs = substitute(match, mx, '\2', 'i')
  let mx = '\([a-zA-Z0-9]\+\)\s*=>\s*\%(\([^"'' \t]\+\)\|"\([^"]\{-}\)"\|''\([^'']\{-}\)''\)'
  while len(attrs) > 0
    let match = matchstr(attrs, mx)
    if len(match) == 0
      break
    endif
    let attr_match = matchlist(match, mx)
    let name = attr_match[1]
    let value = len(attr_match[2]) ? attr_match[2] : attr_match[3]
    let current.attr[name] = value
    let attrs = attrs[stridx(attrs, match) + len(match):]
  endwhile
  return current
endfunction

function! zencoding#lang#haml#toggleComment()
  " TODO
endfunction