Initial, rough kinda working version ClangComplete
Many things need to be ironed out still.
This commit is contained in:
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1df2a5d360
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94288108d8
@ -21,16 +21,19 @@ set cpo&vim
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" This needs to be called outside of a function
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let s:script_folder_path = escape( expand( '<sfile>:p:h' ), '\' )
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let s:old_cursor_text = ''
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let s:searched_and_no_results_found = 0
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let s:should_use_clang = 0
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let g:ycm_min_num_of_chars_for_completion = 2
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" Set up the plugin, load all our modules, bind our keys etc.
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" TODO: check for a non-broken version of Vim and stop executing (with an error
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" message) if the detected version is too old
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function! youcompleteme#Enable()
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augroup youcompleteme
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autocmd!
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autocmd CursorMovedI * call s:OnMovedI()
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" BufWinEnter/Leave?
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" TODO: BufWinEnter/Leave?
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autocmd BufRead,BufEnter * call s:OnBufferVisit()
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autocmd CursorHold,CursorHoldI * call s:OnCursorHold()
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augroup END
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@ -62,6 +65,7 @@ function! youcompleteme#Enable()
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exe 'python sys.path = sys.path + ["' . s:script_folder_path . '/../python"]'
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py import ycm
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py csystem = ycm.CompletionSystem()
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py clangcomp = ycm.ClangComplete()
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endfunction
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@ -96,8 +100,8 @@ endfunction
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function! s:AddIdentifierIfNeeded()
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py vim.command( "let should_add_identifier = '" +
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\ str( int( ycm.ShouldAddIdentifier() ) ) + "'" )
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py vim.command( "let should_add_identifier = " +
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\ str( int( ycm.ShouldAddIdentifier() ) ) )
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if should_add_identifier != 1
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return
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endif
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@ -125,37 +129,38 @@ function! s:InvokeCompletion()
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return
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endif
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py vim.command( "let cursor_text = '" + ycm.CurrentCursorTextVim() + "'" )
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" infinite loops are bad, mkay?
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if cursor_text == '' || cursor_text == s:old_cursor_text
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" This is tricky. First, having 'refresh' set to 'always' in the dictionary
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" that our completion function returns makes sure that our completion function
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" is called on every keystroke when the completion menu is showing
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" (pumvisible() == true). So there's no point in invoking the completion menu
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" with our feedkeys call then.
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" Secondly, when the sequence of characters the user typed produces no
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" results in our search an infinite loop can occur. The problem is that our
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" feedkeys call triggers the OnCursorMovedI event which we are tied to.
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" So we solve this with the searched_and_no_results_found script-scope
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" variable that prevents this infinite loop from starting.
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if pumvisible() || s:searched_and_no_results_found
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let s:searched_and_no_results_found = 0
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return
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endif
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" <c-x><c-u> invokes the user's completion function (which we have set to
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" youcompleteme#Complete), and <c-p> tells vim to select the previous
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" completion candidate. This is necessary because by default, vim selects the
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" youcompleteme#Complete), and <c-p> tells Vim to select the previous
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" completion candidate. This is necessary because by default, Vim selects the
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" first candidate when completion is invoked, and selecting a candidate
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" automatically replaces the current text with it. Calling <c-p> forces vim to
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" automatically replaces the current text with it. Calling <c-p> forces Vim to
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" deselect the first candidate and in turn preserve the user's current text
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" until he explicitly chooses to replace it with a completion.
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call feedkeys( "\<C-X>\<C-U>\<C-P>", 'n' )
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endfunction
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" This is our main entry point. This is what vim calls to get completions.
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function! youcompleteme#Complete(findstart, base)
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if a:findstart
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py vim.command( 'let start_column = ' + str(
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\ ycm.CompletionStartColumn() ) )
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return start_column
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else
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let s:old_cursor_text = a:base
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if strlen( a:base ) < g:ycm_min_num_of_chars_for_completion
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function! s:IdentifierCompletion(query)
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if strlen( a:query ) < g:ycm_min_num_of_chars_for_completion
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return []
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endif
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py csystem.CandidatesForQueryAsync( vim.eval('a:base') )
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py csystem.CandidatesForQueryAsync( vim.eval('a:query') )
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let l:results_ready = 0
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while !l:results_ready
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@ -175,13 +180,57 @@ results = csystem.CandidatesFromStoredRequest()
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if results:
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vim.command( 'let l:results = ' + str( results ) )
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EOF
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let s:searched_and_no_results_found = len( l:results ) == 0
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" We need a very recent version of vim for this to work; otherwise, even
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" when we set refresh = always, vim won't call our completefunc on every
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" keystroke. The problem is still present in vim 7.3.390 but is fixed in
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" 7.3.475. It's possible that patch 404 was the one that fixed this issue,
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" but I haven't tested this assumption.
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" A bug in vim causes the '.' register to break when we use set this... sigh
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return { 'words' : l:results, 'refresh' : 'always'}
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return { 'words' : l:results, 'refresh' : 'always' }
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endfunction
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function! s:ClangCompletion( query )
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py vim.command( 'let l:results = ' +
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\ str( clangcomp.CandidatesForQuery( vim.eval( 'a:query' ) ) ) )
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let s:searched_and_no_results_found = len( l:results ) == 0
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return { 'words' : l:results, 'refresh' : 'always' }
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endfunction
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" This is our main entry point. This is what vim calls to get completions.
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function! youcompleteme#Complete( findstart, base )
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if a:findstart
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py << EOF
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start_column = ycm.CompletionStartColumn()
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vim.command( 'let l:start_column = ' + str( start_column ) )
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vim.command( 'let s:should_use_clang = ' +
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str( int( ycm.ShouldUseClang( start_column ) ) ) )
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EOF
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if ( s:should_use_clang )
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return start_column
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else
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let l:current_column = col('.') - 1
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let l:query_length = current_column - start_column
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if ( query_length < g:ycm_min_num_of_chars_for_completion )
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" for vim, -2 means not found but don't trigger an error message
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" see :h complete-functions
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return -2
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endif
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return start_column
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endif
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else
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if ( s:should_use_clang )
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return s:ClangCompletion( a:base )
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else
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return s:IdentifierCompletion( a:base )
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endif
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endif
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endfunction
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@ -31,9 +31,10 @@ std::vector< CXUnsavedFile > ToCXUnsavedFiles(
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std::vector< CXUnsavedFile > clang_unsaved_files( unsaved_files.size() );
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for ( uint i = 0; i < unsaved_files.size(); ++i )
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{
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clang_unsaved_files[ i ].Filename = unsaved_files[ i ].filename_->c_str();
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clang_unsaved_files[ i ].Contents = unsaved_files[ i ].contents_->c_str();
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clang_unsaved_files[ i ].Length = unsaved_files[ i ].contents_->length();
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// TODO: assert non-null
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clang_unsaved_files[ i ].Filename = unsaved_files[ i ].filename_;
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clang_unsaved_files[ i ].Contents = unsaved_files[ i ].contents_;
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clang_unsaved_files[ i ].Length = unsaved_files[ i ].length_;
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}
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return clang_unsaved_files;
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@ -155,9 +156,15 @@ std::vector< std::string > ClangComplete::CandidatesForLocationInFile(
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std::vector< CXUnsavedFile > cxunsaved_files = ToCXUnsavedFiles(
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unsaved_files );
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// TODO: figure out does codeCompleteAt reparse the TU if the underlying
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// source file has changed on disk since the last time the TU was updated and
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// there are no unsaved files.
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// codeCompleteAt reparses the TU if the underlying source file has changed on
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// disk since the last time the TU was updated and there are no unsaved files.
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// If there are unsaved files, then codeCompleteAt will parse the in-memory
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// file contents we are giving it. In short, it is NEVER a good idea to call
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// clang_reparseTranslationUnit right before a call to clang_codeCompleteAt.
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// The only makes clang reparse the whole file TWICE, which has a huge impact
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// on latency. At the time of writing, it seems that most users of libclang
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// in the open-source world don't realize this (I checked). Some don't even
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// call reparse*, but parse* which is even less efficient.
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CXCodeCompleteResults *results =
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clang_codeCompleteAt( GetTranslationUnitForFile( filename, unsaved_files ),
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@ -189,7 +196,7 @@ CXTranslationUnit ClangComplete::CreateTranslationUnit(
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flags.size(),
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&cxunsaved_files[ 0 ],
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cxunsaved_files.size(),
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clang_defaultEditingTranslationUnitOptions());
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clang_defaultEditingTranslationUnitOptions() );
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}
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@ -31,8 +31,20 @@ namespace YouCompleteMe
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struct UnsavedFile
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{
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std::string *filename_;
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std::string *contents_;
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UnsavedFile() : filename_( NULL ), contents_( NULL ), length_( 0 ) {}
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const char *filename_;
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const char *contents_;
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unsigned long length_;
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// We need this to be able to export this struct to Python via Boost.Python's
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// methods. I have no clue why, but it won't compile without it.
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// TODO: report this problem on the Boost bug tracker, the default equality
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// operator should be more than adequate here
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bool operator==( const UnsavedFile &other) const
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{
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return filename_ == other.filename_ && contents_ == other.contents_;
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}
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};
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@ -16,6 +16,7 @@
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// along with YouCompleteMe. If not, see <http://www.gnu.org/licenses/>.
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#include "Completer.h"
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#include "ClangComplete.h"
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#include "Future.h"
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#include <boost/python.hpp>
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@ -27,17 +28,41 @@ BOOST_PYTHON_MODULE(indexer)
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using namespace boost::python;
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using namespace YouCompleteMe;
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class_< std::vector< std::string > >( "StringVec" )
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.def( vector_indexing_suite< std::vector< std::string > >() );
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class_< Future >( "Future" )
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.def( "ResultsReady", &Future::ResultsReady )
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.def( "GetResults", &Future::GetResults );
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class_< Completer, boost::noncopyable >( "Completer" )
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.def( "EnableThreading", &Completer::EnableThreading )
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// .def( "AddCandidatesToDatabase", actd )
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.def( "AddCandidatesToDatabase", &Completer::AddCandidatesToDatabase )
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.def( "CandidatesForQueryAndTypeAsync",
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&Completer::CandidatesForQueryAndTypeAsync );
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class_< std::vector< std::string > >( "StringVec" )
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.def( vector_indexing_suite< std::vector< std::string > >() );
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// CAREFUL HERE! For filename and contents we are referring directly to
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// Python-allocated and -managed memory since we are accepting pointers to
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// data members of python objects. We need to ensure that those objects
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// outlive our UnsavedFile objects.
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class_< UnsavedFile >( "UnsavedFile" )
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.add_property( "filename_",
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make_getter( &UnsavedFile::filename_ ),
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make_setter( &UnsavedFile::filename_,
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return_value_policy< reference_existing_object >() ) )
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.add_property( "contents_",
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make_getter( &UnsavedFile::contents_ ),
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make_setter( &UnsavedFile::contents_,
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return_value_policy< reference_existing_object >() ) )
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.def_readwrite( "length_", &UnsavedFile::length_ );
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class_< std::vector< UnsavedFile > >( "UnsavedFileVec" )
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.def( vector_indexing_suite< std::vector< UnsavedFile > >() );
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class_< ClangComplete, boost::noncopyable >( "ClangComplete" )
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.def( "SetGlobalCompileFlags", &ClangComplete::SetGlobalCompileFlags )
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.def( "SetFileCompileFlags", &ClangComplete::SetFileCompileFlags )
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.def( "UpdateTranslationUnit", &ClangComplete::UpdateTranslationUnit )
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.def( "CandidatesForLocationInFile",
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&ClangComplete::CandidatesForLocationInFile );
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}
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@ -23,6 +23,7 @@ import indexer
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min_num_chars = int( vim.eval( "g:ycm_min_num_of_chars_for_completion" ) )
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clang_filetypes = set( [ 'c', 'cpp', 'objc', 'objcpp' ] )
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class CompletionSystem( object ):
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def __init__( self ):
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@ -87,6 +88,34 @@ class CompletionSystem( object ):
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filepath,
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True )
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class ClangComplete( object ):
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def __init__( self ):
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self.completer = indexer.ClangComplete()
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def CandidatesForQuery( self, query ):
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buffer = vim.current.buffer
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# CAREFUL HERE! For UnsavedFile filename and contents we are referring
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# directly to Python-allocated and -managed memory since we are accepting
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# pointers to data members of python objects. We need to ensure that those
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# objects outlive our UnsavedFile objects.
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# We do this to avoid an extra copy of the entire file contents.
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contents = '\n'.join( buffer )
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unsaved_file = indexer.UnsavedFile()
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unsaved_file.contents_ = contents
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unsaved_file.length_ = len( contents )
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unsaved_file.filename_ = buffer.name
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files = indexer.UnsavedFileVec()
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files.append( unsaved_file )
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line = int( vim.eval( "line('.')" ) )
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column = CompletionStartColumn() + 1
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results = self.completer.CandidatesForLocationInFile( buffer.name,
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line,
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column,
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files )
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return list( results )
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def CurrentColumn():
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"""Do NOT access the CurrentColumn in vim.current.line. It doesn't exist yet.
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@ -103,23 +132,48 @@ def CurrentLineAndColumn():
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return line_num, column_num
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def ShouldUseClang( start_column ):
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filetype = vim.eval( "&filetype" )
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if filetype not in clang_filetypes:
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return False
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line = vim.current.line
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previous_char_index = start_column - 1
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if ( not len( line ) or
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previous_char_index < 0 or
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previous_char_index >= len( line ) ):
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return False
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if line[ previous_char_index ] == '.':
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return True
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if previous_char_index - 1 < 0:
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return False
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two_previous_chars = line[ previous_char_index - 1 : start_column ]
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if ( two_previous_chars == '->' or two_previous_chars == '::' ):
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return True
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return False
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def IsIdentifierChar( char ):
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return char.isalnum() or char == '_'
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def CompletionStartColumn():
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"""Returns the 0-based index where the completion string should start. So if
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the user enters:
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foo.bar^
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with the cursor being at the location of the caret, then the starting column
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would be the index of the letter 'b'.
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"""
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line = vim.current.line
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current_column = CurrentColumn()
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start_column = current_column
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start_column = CurrentColumn()
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while start_column > 0 and IsIdentifierChar( line[ start_column - 1 ] ):
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start_column -= 1
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if current_column - start_column < min_num_chars:
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# for vim, -2 means not found but don't trigger an error message
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# see :h complete-functions
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return -2
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return start_column
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@ -158,20 +212,6 @@ def PreviousIdentifier():
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return line[ start_column : end_column ]
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def CurrentCursorText():
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start_column = CompletionStartColumn()
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current_column = CurrentColumn()
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if current_column - start_column < min_num_chars:
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return ""
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return vim.current.line[ start_column : current_column ]
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def CurrentCursorTextVim():
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return EscapeForVim( CurrentCursorText() )
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def ShouldAddIdentifier():
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current_column = CurrentColumn()
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previous_char_index = current_column - 1
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