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| -rw-r--r-- | ftplugin/ocaml.vim | 624 |
1 files changed, 624 insertions, 0 deletions
diff --git a/ftplugin/ocaml.vim b/ftplugin/ocaml.vim index 87cd9ef4..f374a87e 100644 --- a/ftplugin/ocaml.vim +++ b/ftplugin/ocaml.vim @@ -1,3 +1,627 @@ +if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'vim') == -1 + +" Language: OCaml +" Maintainer: David Baelde <firstname.name@ens-lyon.org> +" Mike Leary <leary@nwlink.com> +" Markus Mottl <markus.mottl@gmail.com> +" Pierre Vittet <pierre-vittet@pvittet.com> +" Stefano Zacchiroli <zack@bononia.it> +" Vincent Aravantinos <firstname.name@imag.fr> +" URL: http://www.ocaml.info/vim/ftplugin/ocaml.vim +" Last Change: +" 2013 Jul 26 - load default compiler settings (MM) +" 2013 Jul 24 - removed superfluous efm-setting (MM) +" 2013 Jul 22 - applied fixes supplied by Hirotaka Hamada (MM) +" 2013 Mar 15 - Improved error format (MM) + +if exists("b:did_ftplugin") + finish +endif +let b:did_ftplugin=1 + +" Use standard compiler settings unless user wants otherwise +if !exists("current_compiler") + :compiler ocaml +endif + +" some macro +if exists('*fnameescape') + function! s:Fnameescape(s) + return fnameescape(a:s) + endfun +else + function! s:Fnameescape(s) + return escape(a:s," \t\n*?[{`$\\%#'\"|!<") + endfun +endif + +" Error handling -- helps moving where the compiler wants you to go +let s:cposet=&cpoptions +set cpo&vim + +" Add mappings, unless the user didn't want this. +if !exists("no_plugin_maps") && !exists("no_ocaml_maps") + " (un)commenting + if !hasmapto('<Plug>Comment') + nmap <buffer> <LocalLeader>c <Plug>LUncomOn + xmap <buffer> <LocalLeader>c <Plug>BUncomOn + nmap <buffer> <LocalLeader>C <Plug>LUncomOff + xmap <buffer> <LocalLeader>C <Plug>BUncomOff + endif + + nnoremap <buffer> <Plug>LUncomOn gI(* <End> *)<ESC> + nnoremap <buffer> <Plug>LUncomOff :s/^(\* \(.*\) \*)/\1/<CR>:noh<CR> + xnoremap <buffer> <Plug>BUncomOn <ESC>:'<,'><CR>`<O<ESC>0i(*<ESC>`>o<ESC>0i*)<ESC>`< + xnoremap <buffer> <Plug>BUncomOff <ESC>:'<,'><CR>`<dd`>dd`< + + nmap <buffer> <LocalLeader>s <Plug>OCamlSwitchEdit + nmap <buffer> <LocalLeader>S <Plug>OCamlSwitchNewWin + + nmap <buffer> <LocalLeader>t <Plug>OCamlPrintType + xmap <buffer> <LocalLeader>t <Plug>OCamlPrintType +endif + +" Let % jump between structure elements (due to Issac Trotts) +let b:mw = '' +let b:mw = b:mw . ',\<let\>:\<and\>:\(\<in\>\|;;\)' +let b:mw = b:mw . ',\<if\>:\<then\>:\<else\>' +let b:mw = b:mw . ',\<\(for\|while\)\>:\<do\>:\<done\>,' +let b:mw = b:mw . ',\<\(object\|sig\|struct\|begin\)\>:\<end\>' +let b:mw = b:mw . ',\<\(match\|try\)\>:\<with\>' +let b:match_words = b:mw + +let b:match_ignorecase=0 + +" switching between interfaces (.mli) and implementations (.ml) +if !exists("g:did_ocaml_switch") + let g:did_ocaml_switch = 1 + nnoremap <Plug>OCamlSwitchEdit :<C-u>call OCaml_switch(0)<CR> + nnoremap <Plug>OCamlSwitchNewWin :<C-u>call OCaml_switch(1)<CR> + fun OCaml_switch(newwin) + if (match(bufname(""), "\\.mli$") >= 0) + let fname = s:Fnameescape(substitute(bufname(""), "\\.mli$", ".ml", "")) + if (a:newwin == 1) + exec "new " . fname + else + exec "arge " . fname + endif + elseif (match(bufname(""), "\\.ml$") >= 0) + let fname = s:Fnameescape(bufname("")) . "i" + if (a:newwin == 1) + exec "new " . fname + else + exec "arge " . fname + endif + endif + endfun +endif + +" Folding support + +" Get the modeline because folding depends on indentation +let s:s = line2byte(line('.'))+col('.')-1 +if search('^\s*(\*:o\?caml:') + let s:modeline = getline(".") +else + let s:modeline = "" +endif +if s:s > 0 + exe 'goto' s:s +endif + +" Get the indentation params +let s:m = matchstr(s:modeline,'default\s*=\s*\d\+') +if s:m != "" + let s:idef = matchstr(s:m,'\d\+') +elseif exists("g:omlet_indent") + let s:idef = g:omlet_indent +else + let s:idef = 2 +endif +let s:m = matchstr(s:modeline,'struct\s*=\s*\d\+') +if s:m != "" + let s:i = matchstr(s:m,'\d\+') +elseif exists("g:omlet_indent_struct") + let s:i = g:omlet_indent_struct +else + let s:i = s:idef +endif + +" Set the folding method +if exists("g:ocaml_folding") + setlocal foldmethod=expr + setlocal foldexpr=OMLetFoldLevel(v:lnum) +endif + +let b:undo_ftplugin = "setlocal efm< foldmethod< foldexpr<" + \ . "| unlet! b:mw b:match_words b:match_ignorecase" + + +" - Only definitions below, executed once ------------------------------------- + +if exists("*OMLetFoldLevel") + finish +endif + +function s:topindent(lnum) + let l = a:lnum + while l > 0 + if getline(l) =~ '\s*\%(\<struct\>\|\<sig\>\|\<object\>\)' + return indent(l) + endif + let l = l-1 + endwhile + return -s:i +endfunction + +function OMLetFoldLevel(l) + + " This is for not merging blank lines around folds to them + if getline(a:l) !~ '\S' + return -1 + endif + + " We start folds for modules, classes, and every toplevel definition + if getline(a:l) =~ '^\s*\%(\<val\>\|\<module\>\|\<class\>\|\<type\>\|\<method\>\|\<initializer\>\|\<inherit\>\|\<exception\>\|\<external\>\)' + exe 'return ">' (indent(a:l)/s:i)+1 '"' + endif + + " Toplevel let are detected thanks to the indentation + if getline(a:l) =~ '^\s*let\>' && indent(a:l) == s:i+s:topindent(a:l) + exe 'return ">' (indent(a:l)/s:i)+1 '"' + endif + + " We close fold on end which are associated to struct, sig or object. + " We use syntax information to do that. + if getline(a:l) =~ '^\s*end\>' && synIDattr(synID(a:l, indent(a:l)+1, 0), "name") != "ocamlKeyword" + return (indent(a:l)/s:i)+1 + endif + + " Folds end on ;; + if getline(a:l) =~ '^\s*;;' + exe 'return "<' (indent(a:l)/s:i)+1 '"' + endif + + " Comments around folds aren't merged to them. + if synIDattr(synID(a:l, indent(a:l)+1, 0), "name") == "ocamlComment" + return -1 + endif + + return '=' +endfunction + +" Vim support for OCaml .annot files +" +" Last Change: 2007 Jul 17 +" Maintainer: Vincent Aravantinos <vincent.aravantinos@gmail.com> +" License: public domain +" +" Originally inspired by 'ocaml-dtypes.vim' by Stefano Zacchiroli. +" The source code is quite radically different for we not use python anymore. +" However this plugin should have the exact same behaviour, that's why the +" following lines are the quite exact copy of Stefano's original plugin : +" +" << +" Executing Ocaml_print_type(<mode>) function will display in the Vim bottom +" line(s) the type of an ocaml value getting it from the corresponding .annot +" file (if any). If Vim is in visual mode, <mode> should be "visual" and the +" selected ocaml value correspond to the highlighted text, otherwise (<mode> +" can be anything else) it corresponds to the literal found at the current +" cursor position. +" +" Typing '<LocalLeader>t' (LocalLeader defaults to '\', see :h LocalLeader) +" will cause " Ocaml_print_type function to be invoked with the right +" argument depending on the current mode (visual or not). +" >> +" +" If you find something not matching this behaviour, please signal it. +" +" Differences are: +" - no need for python support +" + plus : more portable +" + minus: no more lazy parsing, it looks very fast however +" +" - ocamlbuild support, ie. +" + the plugin finds the _build directory and looks for the +" corresponding file inside; +" + if the user decides to change the name of the _build directory thanks +" to the '-build-dir' option of ocamlbuild, the plugin will manage in +" most cases to find it out (most cases = if the source file has a unique +" name among your whole project); +" + if ocamlbuild is not used, the usual behaviour holds; ie. the .annot +" file should be in the same directory as the source file; +" + for vim plugin programmers: +" the variable 'b:_build_dir' contains the inferred path to the build +" directory, even if this one is not named '_build'. +" +" Bonus : +" - latin1 accents are handled +" - lists are handled, even on multiple lines, you don't need the visual mode +" (the cursor must be on the first bracket) +" - parenthesized expressions, arrays, and structures (ie. '(...)', '[|...|]', +" and '{...}') are handled the same way + + " Copied from Stefano's original plugin : + " << + " .annot ocaml file representation + " + " File format (copied verbatim from caml-types.el) + " + " file ::= block * + " block ::= position <SP> position <LF> annotation * + " position ::= filename <SP> num <SP> num <SP> num + " annotation ::= keyword open-paren <LF> <SP> <SP> data <LF> close-paren + " + " <SP> is a space character (ASCII 0x20) + " <LF> is a line-feed character (ASCII 0x0A) + " num is a sequence of decimal digits + " filename is a string with the lexical conventions of O'Caml + " open-paren is an open parenthesis (ASCII 0x28) + " close-paren is a closed parenthesis (ASCII 0x29) + " data is any sequence of characters where <LF> is always followed by + " at least two space characters. + " + " - in each block, the two positions are respectively the start and the + " end of the range described by the block. + " - in a position, the filename is the name of the file, the first num + " is the line number, the second num is the offset of the beginning + " of the line, the third num is the offset of the position itself. + " - the char number within the line is the difference between the third + " and second nums. + " + " For the moment, the only possible keyword is \"type\"." + " >> + + +" 1. Finding the annotation file even if we use ocamlbuild + + " In: two strings representing paths + " Out: one string representing the common prefix between the two paths + function! s:Find_common_path (p1,p2) + let temp = a:p2 + while matchstr(a:p1,temp) == '' + let temp = substitute(temp,'/[^/]*$','','') + endwhile + return temp + endfun + + " After call: + " + " Following information have been put in s:annot_file_list, using + " annot_file_name name as key: + " - annot_file_path : + " path to the .annot file corresponding to the + " source file (dealing with ocamlbuild stuff) + " - _build_path: + " path to the build directory even if this one is + " not named '_build' + " - date_of_last annot: + " Set to 0 until we load the file. It contains the + " date at which the file has been loaded. + function! s:Locate_annotation() + let annot_file_name = s:Fnameescape(expand('%:t:r')).'.annot' + if !exists ("s:annot_file_list[annot_file_name]") + silent exe 'cd' s:Fnameescape(expand('%:p:h')) + " 1st case : the annot file is in the same directory as the buffer (no ocamlbuild) + let annot_file_path = findfile(annot_file_name,'.') + if annot_file_path != '' + let annot_file_path = getcwd().'/'.annot_file_path + let _build_path = '' + else + " 2nd case : the buffer and the _build directory are in the same directory + " .. + " / \ + " / \ + " _build .ml + " + let _build_path = finddir('_build','.') + if _build_path != '' + let _build_path = getcwd().'/'._build_path + let annot_file_path = findfile(annot_file_name,'_build') + if annot_file_path != '' + let annot_file_path = getcwd().'/'.annot_file_path + endif + else + " 3rd case : the _build directory is in a directory higher in the file hierarchy + " (it can't be deeper by ocamlbuild requirements) + " .. + " / \ + " / \ + " _build ... + " \ + " \ + " .ml + " + let _build_path = finddir('_build',';') + if _build_path != '' + let project_path = substitute(_build_path,'/_build$','','') + let path_relative_to_project = s:Fnameescape(substitute(expand('%:p:h'),project_path.'/','','')) + let annot_file_path = findfile(annot_file_name,project_path.'/_build/'.path_relative_to_project) + else + let annot_file_path = findfile(annot_file_name,'**') + "4th case : what if the user decided to change the name of the _build directory ? + " -> we relax the constraints, it should work in most cases + if annot_file_path != '' + " 4a. we suppose the renamed _build directory is in the current directory + let _build_path = matchstr(annot_file_path,'^[^/]*') + if annot_file_path != '' + let annot_file_path = getcwd().'/'.annot_file_path + let _build_path = getcwd().'/'._build_path + endif + else + let annot_file_name = '' + "(Pierre Vittet: I have commented 4b because this was chrashing + "my vim (it produced infinite loop)) + " + " 4b. anarchy : the renamed _build directory may be higher in the hierarchy + " this will work if the file for which we are looking annotations has a unique name in the whole project + " if this is not the case, it may still work, but no warranty here + "let annot_file_path = findfile(annot_file_name,'**;') + "let project_path = s:Find_common_path(annot_file_path,expand('%:p:h')) + "let _build_path = matchstr(annot_file_path,project_path.'/[^/]*') + endif + endif + endif + endif + + if annot_file_path == '' + throw 'E484: no annotation file found' + endif + + silent exe 'cd' '-' + let s:annot_file_list[annot_file_name]= [annot_file_path, _build_path, 0] + endif + endfun + + " This variable contain a dictionnary of list. Each element of the dictionnary + " represent an annotation system. An annotation system is a list with : + " - annotation file name as it's key + " - annotation file path as first element of the contained list + " - build path as second element of the contained list + " - annot_file_last_mod (contain the date of .annot file) as third element + let s:annot_file_list = {} + +" 2. Finding the type information in the annotation file + + " a. The annotation file is opened in vim as a buffer that + " should be (almost) invisible to the user. + + " After call: + " The current buffer is now the one containing the .annot file. + " We manage to keep all this hidden to the user's eye. + function! s:Enter_annotation_buffer(annot_file_path) + let s:current_pos = getpos('.') + let s:current_hidden = &l:hidden + set hidden + let s:current_buf = bufname('%') + if bufloaded(a:annot_file_path) + silent exe 'keepj keepalt' 'buffer' s:Fnameescape(a:annot_file_path) + else + silent exe 'keepj keepalt' 'view' s:Fnameescape(a:annot_file_path) + endif + call setpos(".", [0, 0 , 0 , 0]) + endfun + + " After call: + " The original buffer has been restored in the exact same state as before. + function! s:Exit_annotation_buffer() + silent exe 'keepj keepalt' 'buffer' s:Fnameescape(s:current_buf) + let &l:hidden = s:current_hidden + call setpos('.',s:current_pos) + endfun + + " After call: + " The annot file is loaded and assigned to a buffer. + " This also handles the modification date of the .annot file, eg. after a + " compilation (return an updated annot_file_list). + function! s:Load_annotation(annot_file_name) + let annot = s:annot_file_list[a:annot_file_name] + let annot_file_path = annot[0] + let annot_file_last_mod = 0 + if exists("annot[2]") + let annot_file_last_mod = annot[2] + endif + if bufloaded(annot_file_path) && annot_file_last_mod < getftime(annot_file_path) + " if there is a more recent file + let nr = bufnr(annot_file_path) + silent exe 'keepj keepalt' 'bunload' nr + endif + if !bufloaded(annot_file_path) + call s:Enter_annotation_buffer(annot_file_path) + setlocal nobuflisted + setlocal bufhidden=hide + setlocal noswapfile + setlocal buftype=nowrite + call s:Exit_annotation_buffer() + let annot[2] = getftime(annot_file_path) + " List updated with the new date + let s:annot_file_list[a:annot_file_name] = annot + endif + endfun + + "b. 'search' and 'match' work to find the type information + + "In: - lin1,col1: postion of expression first char + " - lin2,col2: postion of expression last char + "Out: - the pattern to be looked for to find the block + " Must be called in the source buffer (use of line2byte) + function! s:Block_pattern(lin1,lin2,col1,col2) + let start_num1 = a:lin1 + let start_num2 = line2byte(a:lin1) - 1 + let start_num3 = start_num2 + a:col1 + let path = '"\(\\"\|[^"]\)\+"' + let start_pos = path.' '.start_num1.' '.start_num2.' '.start_num3 + let end_num1 = a:lin2 + let end_num2 = line2byte(a:lin2) - 1 + let end_num3 = end_num2 + a:col2 + let end_pos = path.' '.end_num1.' '.end_num2.' '.end_num3 + return '^'.start_pos.' '.end_pos."$" + " rq: the '^' here is not totally correct regarding the annot file "grammar" + " but currently the annotation file respects this, and it's a little bit faster with the '^'; + " can be removed safely. + endfun + + "In: (the cursor position should be at the start of an annotation) + "Out: the type information + " Must be called in the annotation buffer (use of search) + function! s:Match_data() + " rq: idem as previously, in the following, the '^' at start of patterns is not necessary + keepj while search('^type($','ce',line(".")) == 0 + keepj if search('^.\{-}($','e') == 0 + throw "no_annotation" + endif + keepj if searchpair('(','',')') == 0 + throw "malformed_annot_file" + endif + endwhile + let begin = line(".") + 1 + keepj if searchpair('(','',')') == 0 + throw "malformed_annot_file" + endif + let end = line(".") - 1 + return join(getline(begin,end),"\n") + endfun + + "In: the pattern to look for in order to match the block + "Out: the type information (calls s:Match_data) + " Should be called in the annotation buffer + function! s:Extract_type_data(block_pattern, annot_file_name) + let annot_file_path = s:annot_file_list[a:annot_file_name][0] + call s:Enter_annotation_buffer(annot_file_path) + try + if search(a:block_pattern,'e') == 0 + throw "no_annotation" + endif + call cursor(line(".") + 1,1) + let annotation = s:Match_data() + finally + call s:Exit_annotation_buffer() + endtry + return annotation + endfun + + "c. link this stuff with what the user wants + " ie. get the expression selected/under the cursor + + let s:ocaml_word_char = '\w|[À-ÿ]|''' + + "In: the current mode (eg. "visual", "normal", etc.) + "Out: the borders of the expression we are looking for the type + function! s:Match_borders(mode) + if a:mode == "visual" + let cur = getpos(".") + normal `< + let col1 = col(".") + let lin1 = line(".") + normal `> + let col2 = col(".") + let lin2 = line(".") + call cursor(cur[1],cur[2]) + return [lin1,lin2,col1-1,col2] + else + let cursor_line = line(".") + let cursor_col = col(".") + let line = getline('.') + if line[cursor_col-1:cursor_col] == '[|' + let [lin2,col2] = searchpairpos('\[|','','|\]','n') + return [cursor_line,lin2,cursor_col-1,col2+1] + elseif line[cursor_col-1] == '[' + let [lin2,col2] = searchpairpos('\[','','\]','n') + return [cursor_line,lin2,cursor_col-1,col2] + elseif line[cursor_col-1] == '(' + let [lin2,col2] = searchpairpos('(','',')','n') + return [cursor_line,lin2,cursor_col-1,col2] + elseif line[cursor_col-1] == '{' + let [lin2,col2] = searchpairpos('{','','}','n') + return [cursor_line,lin2,cursor_col-1,col2] + else + let [lin1,col1] = searchpos('\v%('.s:ocaml_word_char.'|\.)*','ncb') + let [lin2,col2] = searchpos('\v%('.s:ocaml_word_char.'|\.)*','nce') + if col1 == 0 || col2 == 0 + throw "no_expression" + endif + return [cursor_line,cursor_line,col1-1,col2] + endif + endif + endfun + + "In: the current mode (eg. "visual", "normal", etc.) + "Out: the type information (calls s:Extract_type_data) + function! s:Get_type(mode, annot_file_name) + let [lin1,lin2,col1,col2] = s:Match_borders(a:mode) + return s:Extract_type_data(s:Block_pattern(lin1,lin2,col1,col2), a:annot_file_name) + endfun + + "In: A string destined to be printed in the 'echo buffer'. It has line + "break and 2 space at each line beginning. + "Out: A string destined to be yanked, without space and double space. + function s:unformat_ocaml_type(res) + "Remove end of line. + let res = substitute (a:res, "\n", "", "g" ) + "remove double space + let res =substitute(res , " ", " ", "g") + "remove space at begining of string. + let res = substitute(res, "^ *", "", "g") + return res + endfunction + + "d. main + "In: the current mode (eg. "visual", "normal", etc.) + "After call: the type information is displayed + if !exists("*Ocaml_get_type") + function Ocaml_get_type(mode) + let annot_file_name = s:Fnameescape(expand('%:t:r')).'.annot' + call s:Locate_annotation() + call s:Load_annotation(annot_file_name) + let res = s:Get_type(a:mode, annot_file_name) + " Copy result in the unnamed buffer + let @" = s:unformat_ocaml_type(res) + return res + endfun + endif + + if !exists("*Ocaml_get_type_or_not") + function Ocaml_get_type_or_not(mode) + let t=reltime() + try + let res = Ocaml_get_type(a:mode) + return res + catch + return "" + endtry + endfun + endif + + if !exists("*Ocaml_print_type") + function Ocaml_print_type(mode) + if expand("%:e") == "mli" + echohl ErrorMsg | echo "No annotations for interface (.mli) files" | echohl None + return + endif + try + echo Ocaml_get_type(a:mode) + catch /E484:/ + echohl ErrorMsg | echo "No type annotations (.annot) file found" | echohl None + catch /no_expression/ + echohl ErrorMsg | echo "No expression found under the cursor" | echohl None + catch /no_annotation/ + echohl ErrorMsg | echo "No type annotation found for the given text" | echohl None + catch /malformed_annot_file/ + echohl ErrorMsg | echo "Malformed .annot file" | echohl None + endtry + endfun + endif + +" Maps + nnoremap <silent> <Plug>OCamlPrintType :<C-U>call Ocaml_print_type("normal")<CR> + xnoremap <silent> <Plug>OCamlPrintType :<C-U>call Ocaml_print_type("visual")<CR>`< + +let &cpoptions=s:cposet +unlet s:cposet + +" vim:sw=2 fdm=indent + +endif if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'ocaml') == -1 " Language: OCaml |