warg
acf6fffb2f
- Add row/column tracking to Content for multi-line highlight support - Switch from Node:format() returning Content to Node:format_into(content) - Remove complex highlight offset calculations and manual text merging - Use content:current_line() instead of tracking line_number in nodes - Fix pointer child formatting to use item.name directly - Clean up unused imports and simplify render_node method
313 lines
8.8 KiB
Lua
313 lines
8.8 KiB
Lua
-- DAP hover implementation with tree-based display
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local Item = require("ow.dap.item")
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local Tree = require("ow.dap.hover.tree")
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local log = require("ow.log")
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---@class ow.dap.hover.Window
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---@field current_win? integer Currently active hover window ID
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---@field ns_id integer Namespace for extmarks
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---@field tree ow.dap.hover.Tree? Current tree formatter
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local Window = {}
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Window.MAX_WIDTH = nil
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Window.MAX_HEIGHT = nil
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Window.ns_id = vim.api.nvim_create_namespace("ow.dap.hover")
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---Close any existing hover window
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function Window.close()
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if Window.current_win and vim.api.nvim_win_is_valid(Window.current_win) then
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vim.api.nvim_win_close(Window.current_win, true)
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end
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Window.current_win = nil
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Window.tree = nil
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end
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---@param lines string[]
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---@return integer
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function Window.compute_width(lines)
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local max_width = 1
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for _, line in ipairs(lines) do
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if Window.MAX_WIDTH and #line >= Window.MAX_WIDTH then
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max_width = Window.MAX_WIDTH
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break
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end
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max_width = math.max(max_width, #line)
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end
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return max_width
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end
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---Create and display hover window with tree content
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---@param lines string[]
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---@param content ow.dap.hover.Content
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function Window.show(lines, content)
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-- Create buffer
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local orig_buf = vim.api.nvim_get_current_buf()
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local buf = vim.api.nvim_create_buf(false, true)
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vim.api.nvim_buf_set_lines(buf, 0, -1, false, lines)
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-- Create window (initially hidden for size calculation)
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local win = vim.api.nvim_open_win(buf, false, {
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relative = "cursor",
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width = Window.compute_width(lines),
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height = 1,
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row = 1,
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col = 0,
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border = "rounded",
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style = "minimal",
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hide = true,
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})
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-- Calculate and apply final height
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local text_height = vim.api.nvim_win_text_height(win, {}).all
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vim.api.nvim_win_set_config(win, {
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height = math.min(Window.MAX_HEIGHT or text_height, text_height),
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hide = false,
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})
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-- Apply syntax highlighting
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content:apply_highlights(Window.ns_id, buf)
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-- Store window reference
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Window.current_win = win
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-- Set up auto-close behavior
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vim.api.nvim_create_autocmd({ "CursorMoved", "InsertEnter" }, {
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buffer = orig_buf,
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once = true,
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callback = Window.close,
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})
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vim.api.nvim_create_autocmd("WinLeave", {
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buffer = buf,
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once = true,
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callback = Window.close,
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})
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-- Set up expansion keymaps
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vim.keymap.set("n", "<CR>", function()
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Window.expand_at_cursor(buf)
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end, { buffer = buf, nowait = true })
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vim.keymap.set("n", "<Tab>", function()
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Window.expand_at_cursor(buf)
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end, { buffer = buf, nowait = true })
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end
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---Expand/collapse item at cursor position
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---@param buf integer
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function Window.expand_at_cursor(buf)
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if not Window.tree then
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return
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end
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-- Re-render the tree
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coroutine.wrap(function()
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local ok, err = xpcall(function()
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-- Toggle expansion
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local cursor = vim.api.nvim_win_get_cursor(Window.current_win)
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local success = Window.tree:toggle_at_line(cursor[1])
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if not success then
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return
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end
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local content = Window.tree:render()
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local lines = content:get_lines()
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-- TODO: possible to only update the affected lines?
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-- Update buffer content
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vim.api.nvim_set_option_value(
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"scrolloff",
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0,
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{ win = Window.current_win }
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)
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vim.api.nvim_buf_set_lines(buf, 0, -1, false, lines)
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vim.api.nvim_set_option_value(
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"scrolloff",
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vim.o.scrolloff,
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{ win = Window.current_win }
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)
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-- Re-apply highlights
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vim.api.nvim_buf_clear_namespace(buf, -1, 0, -1) -- Clear old highlights
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content:apply_highlights(Window.ns_id, buf)
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-- Adjust window size
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vim.api.nvim_win_set_config(Window.current_win, {
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width = Window.compute_width(lines),
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})
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local text_height =
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vim.api.nvim_win_text_height(Window.current_win, {}).all
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vim.api.nvim_win_set_config(Window.current_win, {
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height = math.min(
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Window.MAX_HEIGHT or text_height,
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text_height
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),
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})
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end, debug.traceback)
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if not ok then
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log.error("Expansion failed:\n%s", err)
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end
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end)()
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end
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---Main hover entry point (async)
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---@async
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---@param expr string Expression to evaluate
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---@param session dap.Session DAP session
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---@param frame_id number Current frame ID
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---@param line_nr integer Line number for context
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---@param col_nr integer Column number for context
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---@param current_file string Current file path
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local function hover_eval(
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expr,
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session,
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frame_id,
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line_nr,
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col_nr,
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current_file
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)
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-- Close existing hover window
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Window.close()
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-- Evaluate expression
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local eval_request = {
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expression = expr,
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frameId = frame_id,
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context = "hover",
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line = line_nr,
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column = col_nr,
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source = {
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path = current_file,
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},
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}
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local err, resp = session:request("evaluate", eval_request)
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if err or not resp then
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log.warning("Failed to evaluate '%s': %s", expr, err)
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return
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end
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-- Create item and tree formatter
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local item =
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Item.new(expr, resp.type, resp.result, resp.variablesReference, 0)
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local tree = Tree.new(session)
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-- Build and render tree
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tree:build(item)
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local content = tree:render()
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local lines = content:get_lines()
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-- Store formatter for expansion
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Window.tree = tree
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-- Show hover window
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Window.show(lines, content)
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end
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---Public hover function
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local function hover_async()
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-- Check if hover window is already open - focus it instead
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if Window.current_win and vim.api.nvim_win_is_valid(Window.current_win) then
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vim.api.nvim_set_current_win(Window.current_win)
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return
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end
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local dap = require("dap")
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local session = dap.session()
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if not session then
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return
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end
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local capabilities = session.capabilities or {}
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local supports_hover = capabilities.supportsEvaluateForHovers
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if not supports_hover then
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log.warning("Hover is not supported by this adapter")
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return
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end
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local cursor_pos = vim.api.nvim_win_get_cursor(0)
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local line_nr = cursor_pos[1] -- nvim-dap sets linesStartAt1=true
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local col_nr = cursor_pos[2] + 1 -- nvim-dap sets columnsStartAt1=true
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local current_file = vim.api.nvim_buf_get_name(0)
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-- Get expression under cursor
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local expr
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local mode = vim.api.nvim_get_mode()
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if mode.mode == "v" then
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-- Visual mode selection
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local start_pos = vim.fn.getpos("v")
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local end_pos = vim.fn.getpos(".")
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local start_row, start_col = start_pos[2], start_pos[3]
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local end_row, end_col = end_pos[2], end_pos[3]
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if start_row == end_row and end_col < start_col then
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start_col, end_col = end_col, start_col
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elseif end_row < start_row then
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start_row, end_row = end_row, start_row
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start_col, end_col = end_col, start_col
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end
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local lines = vim.api.nvim_buf_get_text(
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0,
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start_row - 1,
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start_col - 1,
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end_row - 1,
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end_col,
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{}
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)
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expr = table.concat(lines, "\n")
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vim.api.nvim_feedkeys(
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vim.api.nvim_replace_termcodes("<ESC>", true, false, true),
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"n",
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false
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)
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else
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expr = vim.fn.expand("<cexpr>")
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end
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if expr == "" then
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return
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end
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-- Get thread and frame information
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local thread_id
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do
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local err, resp = session:request("threads", nil)
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if err or not resp or #resp.threads == 0 then
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log.warning("Failed to get threads: %s", err)
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return
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end
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thread_id = resp.threads[1].id
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end
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local frame_id
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do
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local err, resp =
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session:request("stackTrace", { threadId = thread_id })
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if err or not resp or #resp.stackFrames == 0 then
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log.warning("Failed to get stack trace: %s", err)
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return
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end
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frame_id = resp.stackFrames[1].id
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end
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-- Evaluate and display hover
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hover_eval(expr, session, frame_id, line_nr, col_nr, current_file)
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end
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---Wrapped hover function with error handling
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local function hover()
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coroutine.wrap(function()
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local ok, err = xpcall(hover_async, debug.traceback)
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if not ok then
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log.error("Hover failed:\n%s", err)
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end
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end)()
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end
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return hover
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