C/C++ code completion plugin for ncm2

This plugin is based on libclang python binding. Inspired by clang_complete.

Use g:ncm2_pyclang#library_path to specify the directory of libclang library or the file itself, e.g., for Linux:

" path to directory where libclang.so can be found
let g:ncm2_pyclang#library_path = '/usr/lib/llvm-5.0/lib'

" or path to the libclang.so file
let g:ncm2_pyclang#library_path = '/usr/lib64/libclang.so.5.0'

Notes:

• Different operating systems normally have their own extensions for the libclang file.

  • Linux: libclang.so
  • macOS: libclang.dylib
  • Windows: libclang.dll

• Sometimes ncm2-pyclang still works even you don't set g:ncm2_pyclang#library_path, that's because another libclang is found, which is probably the system libclang. The system libclang is often a bit old and is not guranteed to always be found, so I highly recommend set g:ncm_clang#library_path explicitly.

" a list of relative paths for compile_commands.json
let g:ncm2_pyclang#database_path = [
            \ 'compile_commands.json',
            \ 'build/compile_commands.json'
            \ ]

If your build system doesn't generate compile_commands.json, you could put a .clang_complete file into your project directory, which sould contain something like:

-DDEBUG
-include ../config.h
-I../common

" a list of relative paths looking for .clang_complete
let g:ncm2_pyclang#args_file_path = ['.clang_complete']

This option defaults to clang. clang is invoked with clang -### to find all the include directories used by clang, so that this plugin could provide accurate include completion.

    autocmd FileType c,cpp nnoremap <buffer> gd :<c-u>call ncm2_pyclang#goto_declaration()<cr>