| " 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: 2010 Sep 04 - Added an indentation improvement by Mark Weber |
| " 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) |
| |
| " 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 |
| 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*$', '', '') |
| endwhile |
| return lnum |
| endfunction |
| |
| " Indent for ';;' to match multiple 'let' |
| function! s:GetInd(lnum, pat, lim) |
| let llet = search(a:pat, 'bW') |
| let old = indent(a:lnum) |
| while llet > 0 |
| let old = indent(llet) |
| let nb = s:GetLineWithoutFullComment(llet) |
| if getline(nb) =~ a:lim |
| return old |
| endif |
| let llet = search(a:pat, 'bW') |
| endwhile |
| return old |
| endfunction |
| |
| " Indent pairs |
| function! s:FindPair(pstart, pmid, pend) |
| call search(a:pend, 'bW') |
| return indent(searchpair(a:pstart, a:pmid, a:pend, 'bWn', 'synIDattr(synID(line("."), col("."), 0), "name") =~? "string\\|comment"')) |
| endfunction |
| |
| " Indent 'let' |
| function! s:FindLet(pstart, pmid, pend) |
| call search(a:pend, 'bW') |
| return indent(searchpair(a:pstart, a:pmid, a:pend, 'bWn', 'synIDattr(synID(line("."), col("."), 0), "name") =~? "string\\|comment" || getline(".") =~ "^\\s*let\\>.*=.*\\<in\\s*$" || 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 |
| |
| 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 =~ '\<match\>.*\<with\>\s*\<parser\s*$' |
| let ind = ind - &sw |
| endif |
| |
| return ind |
| |
| endfunction |
| |
| " vim:sw=2 |