vim.cmd([[
      let g:coc_global_extensions = [
      \ 'coc-clangd',
      \ 'coc-lua',
      \ 'coc-python',
      \
      \ 'coc-explorer',
      \ 'coc-translator',
      \ 'coc-yank',
      \ 'coc-pairs',
      \ ]
]])

local map = vim.api.nvim_set_keymap
-- coc 设置
-- Autocomplete
function _G.check_back_space()
    local col = vim.fn.col('.') - 1
    return col == 0 or vim.fn.getline('.'):sub(col, col):match('%s') ~= nil
end


-- Use Tab for trigger completion with characters ahead and navigate
-- NOTE: There's always a completion item selected by default, you may want to enable
-- no select by setting `"suggest.noselect": true` in your configuration file
-- NOTE: Use command ':verbose imap <tab>' to make sure Tab is not mapped by
-- other plugins before putting this into your config
local opts = {silent = true, noremap = true, expr = true, replace_keycodes = false}
map("i", "<TAB>",   [[ coc#pum#visible() ? coc#pum#next(1) : v:lua.check_back_space() ? "<TAB>" : coc#refresh() ]] , opts)
map("i", "<S-TAB>", [[ coc#pum#visible() ? coc#pum#prev(1) : "\<C-h>" ]], opts)
-- Make <CR> to accept selected completion item or notify coc.nvim to format
-- <C-g>u breaks current undo, please make your own choice
map("i", "<cr>", [[ coc#pum#visible() ? coc#pum#confirm() : "\<C-g>u\<CR>\<c-r>=coc#on_enter()\<CR>" ]], opts)

-- Use `[g` and `]g` to navigate diagnostics
-- Use `:CocDiagnostics` to get all diagnostics of current buffer in location list
map("n", "[g", "<Plug>(coc-diagnostic-prev)", {silent = true})
map("n", "]g", "<Plug>(coc-diagnostic-next)", {silent = true})

-- GoTo code navigation
map("n", "gd", "<Plug>(coc-definition)", {silent = true})
map("n", "gy", "<Plug>(coc-type-definition)", {silent = true})
map("n", "gi", "<Plug>(coc-implementation)", {silent = true})
map("n", "gr", "<Plug>(coc-references)", {silent = true})

-- Symbol renaming
map("n", "<leader>rn", "<Plug>(coc-rename)", {silent = true})

-- Formatting selected code
map("x", "<leader>i", "<Plug>(coc-format-selected)", {silent = true})
map("n", "<leader>i", "<Plug>(coc-format-selected)", {silent = true})

map("n", "tt", ":CocCommand explorer<CR>", {silent = true})