" Vim indent file " Language: OCaml " Maintainers: Jean-Francois Yuen " Mike Leary " Markus Mottl " URL: http://www.ocaml.info/vim/indent/ocaml.vim " Last Change: 2013 Jun 29 " 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) " 2013 June - commented textwidth (Marc Weber) " " Marc Weber's comment: This file may contain a lot of (very custom) stuff " which eventually should be moved somewhere else .. " Only load this indent file when no other was loaded. if exists("b:did_indent") finish endif let b:did_indent = 1 setlocal expandtab setlocal 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 nolisp setlocal nosmartindent " At least Marc Weber and Markus Mottl do not like this: " setlocal textwidth=80 " Comment formatting if !exists("no_ocaml_comments") if (has("comments")) setlocal comments=sr:(*,mb:*,ex:*) setlocal fo=cqort endif endif " Only define the function once. if exists("*GetOCamlIndent") finish endif " 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 comments function! 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*$', '', '') endwhile return lnum endfunction " Indent for ';;' to match multiple 'let' function! s:GetInd(lnum, pat, lim) let llet = search(a:pat, 'bW') let old = indent(a:lnum) while llet > 0 let old = indent(llet) let nb = s:GetLineWithoutFullComment(llet) if getline(nb) =~ a:lim return old endif let llet = search(a:pat, 'bW') endwhile return old endfunction " Indent pairs function! s:FindPair(pstart, pmid, pend) call search(a:pend, 'bW') return indent(searchpair(a:pstart, a:pmid, a:pend, 'bWn', 'synIDattr(synID(line("."), col("."), 0), "name") =~? "string\\|comment"')) endfunction " Indent 'let' function! s:FindLet(pstart, pmid, pend) call search(a:pend, 'bW') return indent(searchpair(a:pstart, a:pmid, a:pend, 'bWn', 'synIDattr(synID(line("."), col("."), 0), "name") =~? "string\\|comment" || getline(".") =~ "^\\s*let\\>.*=.*\\\s*$' 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, '','\') " Indent if current line begins with 'done' for 'do': elseif line =~ '^\s*done\>' return s:FindPair('\', '','\') " 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, '','\' if lline !~ s:lim . '\|\\)\|\<$function\|parser\|private\|with$\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$\>' return s:FindPair('\', '', '\') endif " Indent if current line begins with 'else': elseif line =~ '^\s*else\>' if lline !~ '^\s*$if\|then$\>' return s:FindPair('\', '', '\') endif " Indent if current line begins with 'then': elseif line =~ '^\s*then\>' if lline !~ '^\s*$if\|else$\>' return s:FindPair('\', '', '\') endif " Indent if current line begins with 'and': elseif line =~ '^\s*and\>' if lline !~ '^\s*$and\|let\|type$\>\|\' if lline !~ '^\s*$match\|try$\>' return s:FindPair('\<\%(match\|try\)\>', '','\') 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$\|\') " Back to normal indent after lines ending with 'in': elseif lline =~ '\' let ind = s:FindPair('\', '', '\') " Back to normal indent after lines ending with 'done': elseif lline =~ '\', '','\') " Back to normal indent after lines ending with '}' or '>}': elseif lline =~ '$\|>$}\s*$' 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 else " Don't change indentation of this line " for new lines (indent==0) use indentation of previous line " This is for preventing removing indentation of these args: " let f x = " let y = x + 1 in " Printf.printf " "o" << here " "oeuth" << don't touch indentation let i = indent(v:lnum) return i == 0 ? ind : i endif " Subtract a 'shiftwidth' after lines matching 'match ... with parser': if lline =~ '\.*\\s*\