vim: add plugin 'neomvim/lspconfig'

config/nvim/lua/user/plugins/lsp.lua

@@ -0,0 +1,53 @@
+local servers = {
+  omnisharp = {
+    cmd = { vim.fn.expand '~/omnisharp/OmniSharp' },
+  },
+}
+
+local filetypes = {
+  cs = function(client, bufnr)
+    client.server_capabilities.semanticTokensProvider = nil
+  end,
+}
+
+local on_attach = function(client, bufnr)
+  vim.bo.omnifunc = 'v:lua.vim.lsp.omnifunc'  -- do completion with <c-x><c-o>
+
+  local map = vim.keymap.set
+  local opts = { buffer = bufnr }
+
+  map('n', '<space>ca',   vim.lsp.buf.code_action,                opts)
+  map('n', '<space>cf',   vim.lsp.buf.format,                     opts)
+  map('n', 'gD',          vim.lsp.buf.declaration,                opts)
+  map('n', 'gd',          vim.lsp.buf.definition,                 opts)
+  map('n', 'K',           vim.lsp.buf.hover,                      opts)
+  map('n', 'gi',          vim.lsp.buf.implementation,             opts)
+  map('n', 'grr',         vim.lsp.buf.rename,                     opts)
+  map('n', 'gt',          vim.lsp.buf.type_definition,            opts)
+
+  filetype_attach = filetypes[vim.bo.filetype]
+  if filetype_attach then filetype_attach(client, bufnr) end
+end
+
+
+return {
+  'neovim/nvim-lspconfig',
+
+  config = function()
+    local capabilities = vim.lsp.protocol.make_client_capabilities()
+    local has_cmp, cmp = pcall(require, 'cmp_nvim_lsp')
+    if has_cmp then
+      vim.tbl_deep_extend('force', capabilities, cmp.default_capabilities())
+    end
+
+    lsp = require('lspconfig')
+    for server, opts in pairs(servers) do
+      opts = vim.tbl_deep_extend('keep', opts, {
+        on_attach = on_attach,
+        capabilities = capabilities,
+      })
+      lsp[server].setup(opts)
+    end
+  end,
+}
+