1 files changed, 84 insertions, 0 deletions
diff --git a/lua/core/lsp.lua b/lua/core/lsp.lua
new file mode 100644
index 0000000..fd03a42
--- /dev/null
+++ b/lua/core/lsp.lua
@@ -0,0 +1,84 @@
+---@diagnostic disable: param-type-mismatch
+
+local misc = require("core.misc")
+local map, auto = misc.map, misc.auto
+local popup_opts, hover_opts, signature_opts, list_opts, location_opts
+
+-- TODO: find a way to make the qflist current item be the one closest to the
+-- cursor whenever we open it
+local function on_list(opts)
+  vim.fn.setqflist({}, "r", opts)
+  if #opts.items > 1 then
+    vim.cmd.copen()
+  end
+  vim.cmd(".cc! 1")
+end
+
+-- disable the default keybinds (they're bad)
+for _, bind in ipairs({ "grn", "gra", "gri", "grr" }) do
+  pcall(vim.keymap.del, "n", bind)
+end
+
+local M = {}
+
+--- setup vim lsp options
+function M.setup()
+  -- options for different lsp functions
+  popup_opts = { border = vim.g.border_style }
+  hover_opts = vim.tbl_deep_extend("force", popup_opts, {})
+  signature_opts = vim.tbl_deep_extend("force", popup_opts, {})
+  list_opts = { on_list = on_list }
+  location_opts = vim.tbl_deep_extend("force", list_opts, {})
+
+  -- confgiure lsp
+  vim.diagnostic.config {
+    virtual_text = false,
+    virtual_lines = {
+      current_line = true
+    },
+    update_in_insert = false,
+    underline = true,
+    severity_sort = true,
+    signs = {
+      text = {
+        [vim.diagnostic.severity.ERROR] = "x",
+        [vim.diagnostic.severity.WARN] = "!",
+        [vim.diagnostic.severity.INFO] = "i",
+        [vim.diagnostic.severity.HINT] = "h"
+      }
+    }
+  }
+
+  -- set default capabilities and attach function
+  vim.lsp.config['*'] = {
+    capabilities = vim.lsp.protocol.make_client_capabilities()
+  }
+
+  -- make my attach function always run
+  auto("LspAttach", {
+    callback = function(event)
+      local opts = { buffer = event.buf, nowait = true }
+
+      -- LSP actions
+      map("n", "K", function() vim.lsp.buf.hover(hover_opts) end, opts)
+      map("n", "gd", function() vim.lsp.buf.definition(location_opts) end, opts)
+      map("n", "gD", function() vim.lsp.buf.declaration(location_opts) end, opts)
+      map("n", "gi", function() vim.lsp.buf.implementation(location_opts) end, opts)
+      map("n", "gy", function() vim.lsp.buf.type_definition(location_opts) end, opts)
+      map("n", "gr", function() vim.lsp.buf.references(nil, list_opts) end, opts)
+      map("n", "<S-Tab>", function() vim.lsp.buf.signature_help(signature_opts) end, opts)
+      map("n", { "<leader>r", "<F2>" }, vim.lsp.buf.rename, opts)
+      map("n", { "gA", "<F4>" }, vim.lsp.buf.code_action, opts)
+
+      -- Diagnostics
+      map("n", "[d", function()
+        vim.diagnostic.jump({ count = -1 })
+      end, opts)
+      map("n", "]d", function()
+        vim.diagnostic.jump({ count = 1 })
+      end, opts)
+    end
+  })
+end
+
+return M