" Vim indent file" Language:     OCaml" Maintainers:	Jean-Francois Yuen   <jfyuen@happycoders.org>"		Mike Leary	     <leary@nwlink.com>"		Markus Mottl	     <markus.mottl@gmail.com>" URL:		http://www.ocaml.info/vim/indent/ocaml.vim" Last Change:  2005 Jun 25 - Fixed multiple bugs due to 'else\nreturn ind' working"		2005 May 09 - Added an option to not indent OCaml-indents specially (MM)"		2005 Apr 11 - Fixed an indentation bug concerning "let" (MM) " Only load this indent file when no other was loaded.if exists("b:did_indent") finishendiflet b:did_indent = 1 setlocal expandtabsetlocal indentexpr=GetOCamlIndent()setlocal indentkeys+=0=and,0=class,0=constraint,0=done,0=else,0=end,0=exception,0=external,0=if,0=in,0=include,0=inherit,0=initializer,0=let,0=method,0=open,0=then,0=type,0=val,0=with,0;;,0>\],0\|\],0>},0\|,0},0\],0)setlocal nolispsetlocal nosmartindentsetlocal textwidth=80 " Comment formattingif !exists("no_ocaml_comments") if (has("comments"))   setlocal comments=sr:(*,mb:*,ex:*)   setlocal fo=cqort endifendif " Only define the function once.if exists("*GetOCamlIndent") finishendif " Define some patterns:let s:beflet = '^\s*\(initializer\|method\|try\)\|\(\<\(begin\|do\|else\|in\|then\|try\)\|->\|<-\|=\|;\|(\)\s*$'let s:letpat = '^\s*\(let\|type\|module\|class\|open\|exception\|val\|include\|external\)\>'let s:letlim = '\(\<\(sig\|struct\)\|;;\)\s*$'let s:lim = '^\s*\(exception\|external\|include\|let\|module\|open\|type\|val\)\>'let s:module = '\<\%(begin\|sig\|struct\|object\)\>'let s:obj = '^\s*\(constraint\|inherit\|initializer\|method\|val\)\>\|\<\(object\|object\s*(.*)\)\s*$'let s:type = '^\s*\%(class\|let\|type\)\>.*=' " Skipping pattern, for commentsfunction s:GetLineWithoutFullComment(lnum) let lnum = prevnonblank(a:lnum - 1) let lline = substitute(getline(lnum), '(\*.*\*)\s*$', '', '') while lline =~ '^\s*$' && lnum > 0   let lnum = prevnonblank(lnum - 1)   let lline = substitute(getline(lnum), '(\*.*\*)\s*$', '', '') endwhile return lnumendfunction " Indent for ';;' to match multiple 'let'function s:GetInd(lnum, pat, lim) let llet = search(a:pat, 'bW') let old = indent(a:lnum) while llet > 0   let old = indent(llet)   let nb = s:GetLineWithoutFullComment(llet)   if getline(nb) =~ a:lim     return old   endif   let llet = search(a:pat, 'bW') endwhile return oldendfunction " Indent pairsfunction s:FindPair(pstart, pmid, pend) call search(a:pend, 'bW') return indent(searchpair(a:pstart, a:pmid, a:pend, 'bWn', 'synIDattr(synID(line("."), col("."), 0), "name") =~? "string\\|comment"'))endfunction " Indent 'let'function s:FindLet(pstart, pmid, pend) call search(a:pend, 'bW') return indent(searchpair(a:pstart, a:pmid, a:pend, 'bWn', 'synIDattr(synID(line("."), col("."), 0), "name") =~? "string\\|comment" || getline(".") =~ "^\\s*let\\>.*=.*\\<in\\s*$" || getline(prevnonblank(".") - 1) =~ s:beflet'))endfunction function GetOCamlIndent() " Find a non-commented line above the current line. let lnum = s:GetLineWithoutFullComment(v:lnum)  " At the start of the file use zero indent. if lnum == 0   return 0 endif  let ind = indent(lnum) let lline = substitute(getline(lnum), '(\*.*\*)\s*$', '', '')  " Return double 'shiftwidth' after lines matching: if lline =~ '^\s*|.*->\s*$'   return ind + &sw + &sw endif  let line = getline(v:lnum)  " Indent if current line begins with 'end': if line =~ '^\s*end\>'   return s:FindPair(s:module, '','\<end\>')  " Indent if current line begins with 'done' for 'do': elseif line =~ '^\s*done\>'   return s:FindPair('\<do\>', '','\<done\>')  " Indent if current line begins with '}' or '>}': elseif line =~ '^\s*\(\|>\)}'   return s:FindPair('{', '','}')  " Indent if current line begins with ']', '|]' or '>]': elseif line =~ '^\s*\(\||\|>\)\]'   return s:FindPair('\[', '','\]')  " Indent if current line begins with ')': elseif line =~ '^\s*)'   return s:FindPair('(', '',')')  " Indent if current line begins with 'let': elseif line =~ '^\s*let\>'   if lline !~ s:lim . '\|' . s:letlim . '\|' . s:beflet     return s:FindLet(s:type, '','\<let\s*$')   endif  " Indent if current line begins with 'class' or 'type': elseif line =~ '^\s*\(class\|type\)\>'   if lline !~ s:lim . '\|\<and\s*$\|' . s:letlim     return s:FindLet(s:type, '','\<\(class\|type\)\s*$')   endif  " Indent for pattern matching: elseif line =~ '^\s*|'   if lline !~ '^\s*\(|[^\]]\|\(match\|type\|with\)\>\)\|\<\(function\|parser\|private\|with\)\s*$'     call search('|', 'bW')     return indent(searchpair('^\s*\(match\|type\)\>\|\<\(function\|parser\|private\|with\)\s*$', '', '^\s*|', 'bWn', 'synIDattr(synID(line("."), col("."), 0), "name") =~? "string\\|comment" || getline(".") !~ "^\\s*|.*->"'))   endif  " Indent if current line begins with ';;': elseif line =~ '^\s*;;'   if lline !~ ';;\s*$'     return s:GetInd(v:lnum, s:letpat, s:letlim)   endif  " Indent if current line begins with 'in': elseif line =~ '^\s*in\>'   if lline !~ '^\s*\(let\|and\)\>'     return s:FindPair('\<let\>', '', '\<in\>')   endif  " Indent if current line begins with 'else': elseif line =~ '^\s*else\>'   if lline !~ '^\s*\(if\|then\)\>'     return s:FindPair('\<if\>', '', '\<else\>')   endif  " Indent if current line begins with 'then': elseif line =~ '^\s*then\>'   if lline !~ '^\s*\(if\|else\)\>'     return s:FindPair('\<if\>', '', '\<then\>')   endif  " Indent if current line begins with 'and': elseif line =~ '^\s*and\>'   if lline !~ '^\s*\(and\|let\|type\)\>\|\<end\s*$'     return ind - &sw   endif  " Indent if current line begins with 'with': elseif line =~ '^\s*with\>'   if lline !~ '^\s*\(match\|try\)\>'     return s:FindPair('\<\%(match\|try\)\>', '','\<with\>')   endif  " Indent if current line begins with 'exception', 'external', 'include' or " 'open': elseif line =~ '^\s*\(exception\|external\|include\|open\)\>'   if lline !~ s:lim . '\|' . s:letlim     call search(line)     return indent(search('^\s*\(\(exception\|external\|include\|open\|type\)\>\|val\>.*:\)', 'bW'))   endif  " Indent if current line begins with 'val': elseif line =~ '^\s*val\>'   if lline !~ '^\s*\(exception\|external\|include\|open\)\>\|' . s:obj . '\|' . s:letlim     return indent(search('^\s*\(\(exception\|include\|initializer\|method\|open\|type\|val\)\>\|external\>.*:\)', 'bW'))   endif  " Indent if current line begins with 'constraint', 'inherit', 'initializer' " or 'method': elseif line =~ '^\s*\(constraint\|inherit\|initializer\|method\)\>'   if lline !~ s:obj     return indent(search('\<\(object\|object\s*(.*)\)\s*$', 'bW')) + &sw   endif  endif  " Add a 'shiftwidth' after lines ending with: if lline =~ '\(:\|=\|->\|<-\|(\|\[\|{\|{<\|\[|\|\[<\|\<\(begin\|do\|else\|fun\|function\|functor\|if\|initializer\|object\|parser\|private\|sig\|struct\|then\|try\)\|\<object\s*(.*)\)\s*$'   let ind = ind + &sw  " Back to normal indent after lines ending with ';;': elseif lline =~ ';;\s*$' && lline !~ '^\s*;;'   let ind = s:GetInd(v:lnum, s:letpat, s:letlim)  " Back to normal indent after lines ending with 'end': elseif lline =~ '\<end\s*$'   let ind = s:FindPair(s:module, '','\<end\>')  " Back to normal indent after lines ending with 'in': elseif lline =~ '\<in\s*$' && lline !~ '^\s*in\>'   let ind = s:FindPair('\<let\>', '', '\<in\>')  " Back to normal indent after lines ending with 'done': elseif lline =~ '\<done\s*$'   let ind = s:FindPair('\<do\>', '','\<done\>')  " Back to normal indent after lines ending with '}' or '>}': elseif lline =~ '\(\|>\)}\s*$'   let ind = s:FindPair('{', '','}')  " Back to normal indent after lines ending with ']', '|]' or '>]': elseif lline =~ '\(\||\|>\)\]\s*$'   let ind = s:FindPair('\[', '','\]')  " Back to normal indent after comments: elseif lline =~ '\*)\s*$'   call search('\*)', 'bW')   let ind = indent(searchpair('(\*', '', '\*)', 'bWn', 'synIDattr(synID(line("."), col("."), 0), "name") =~? "string"'))  " Back to normal indent after lines ending with ')': elseif lline =~ ')\s*$'   let ind = s:FindPair('(', '',')')  " If this is a multiline comment then align '*': elseif lline =~ '^\s*(\*' && line =~ '^\s*\*'   let ind = ind + 1  endif  " Subtract a 'shiftwidth' after lines matching 'match ... with parser': if lline =~ '\<match\>.*\<with\>\s*\<parser\s*$'   let ind = ind - &sw endif  return ind endfunction " vim:sw=2