355 lines
9.0 KiB
Lua
355 lines
9.0 KiB
Lua
local util = require("util")
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local GROUP = vim.api.nvim_create_augroup("ow.lsp.codelens", { clear = true })
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local NS = vim.api.nvim_create_namespace("ow.lsp.codelens")
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local REFRESH_DEBOUNCE_MS = 200
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local M = {}
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---@alias ow.lsp.codelens.Position "eol" | "right_align" | "inline" | "above"
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---@type ow.lsp.codelens.Position
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local position = "above"
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local separator = " | "
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---@type table<integer, ow.lsp.codelens.State>
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local state_by_buf = {}
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local refresh_debounced = util.debounce(function(buf)
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local state = state_by_buf[buf]
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if state then
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state:refresh()
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end
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end, REFRESH_DEBOUNCE_MS)
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---@class ow.lsp.codelens.Row
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---@field row integer
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---@field ready lsp.CodeLens[]
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---@field pending integer
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local Row = {}
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Row.__index = Row
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---@param row integer
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---@return ow.lsp.codelens.Row
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function Row.new(row)
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return setmetatable({ row = row, ready = {}, pending = 0 }, Row)
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end
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---@param lens lsp.CodeLens
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function Row:add(lens)
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table.insert(self.ready, lens)
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end
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function Row:await()
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self.pending = self.pending + 1
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end
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---@param resolved? lsp.CodeLens
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function Row:resolved(resolved)
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self.pending = self.pending - 1
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if resolved then
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table.insert(self.ready, resolved)
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end
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end
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---@param buf integer
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function Row:render(buf)
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if not vim.api.nvim_buf_is_valid(buf) then
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return
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end
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if self.pending > 0 or #self.ready == 0 then
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return
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end
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table.sort(self.ready, function(a, b)
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return a.range.start.character < b.range.start.character
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end)
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local parts = {}
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for i, lens in ipairs(self.ready) do
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table.insert(parts, { lens.command.title, "LspCodeLens" })
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if i < #self.ready then
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table.insert(parts, { separator, "LspCodeLensSeparator" })
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end
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end
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local col, opts
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if position == "above" then
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local line = vim.api.nvim_buf_get_lines(
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buf,
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self.row,
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self.row + 1,
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false
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)[1] or ""
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local indent = line:match("^%s*") or ""
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local chunks = parts
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if indent ~= "" then
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chunks = { { indent, "LspCodeLensSeparator" } }
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vim.list_extend(chunks, parts)
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end
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col = 0
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opts = {
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virt_lines = { chunks },
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virt_lines_above = true,
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hl_mode = "combine",
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}
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else
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col = position == "inline" and self.ready[1].range.start.character or 0
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opts = {
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virt_text = parts,
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virt_text_pos = position,
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hl_mode = "combine",
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}
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end
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-- One extmark per row. Extmarks auto-shift with edits, so multiple from
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-- prior refreshes can end up on the same row; pick the first and drop
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-- the rest, then reuse its id for an atomic update.
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local marks = vim.api.nvim_buf_get_extmarks(
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buf,
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NS,
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{ self.row, 0 },
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{ self.row, -1 },
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{ details = true }
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)
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local primary
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for i, mark in ipairs(marks) do
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if i == 1 then
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primary = { id = mark[1], col = mark[3], details = mark[4] }
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else
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vim.api.nvim_buf_del_extmark(buf, NS, mark[1])
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end
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end
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if primary and primary.col == col and primary.details then
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local d = primary.details --[[@as vim.api.keyset.extmark_details]]
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local same = opts.virt_lines
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and vim.deep_equal(d.virt_lines, opts.virt_lines)
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and d.virt_lines_above == opts.virt_lines_above
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or not opts.virt_lines
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and d.virt_text_pos == opts.virt_text_pos
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and vim.deep_equal(d.virt_text, opts.virt_text)
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if same then
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return
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end
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end
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opts.id = primary and primary.id or nil
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vim.api.nvim_buf_set_extmark(buf, NS, self.row, col, opts)
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end
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---@class ow.lsp.codelens.State
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---@field buf integer
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---@field enabled boolean
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---@field attached boolean
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---@field generation integer
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---@field rows table<integer, ow.lsp.codelens.Row>
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local State = {}
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State.__index = State
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---@param buf integer
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---@return ow.lsp.codelens.State
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function State.new(buf)
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return setmetatable({
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buf = buf,
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enabled = false,
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attached = false,
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generation = 0,
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rows = {},
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}, State)
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end
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function State:render()
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if not vim.api.nvim_buf_is_valid(self.buf) then
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return
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end
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if not self.enabled then
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vim.api.nvim_buf_clear_namespace(self.buf, NS, 0, -1)
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return
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end
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for _, row in pairs(self.rows) do
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row:render(self.buf)
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end
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for _, mark in
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ipairs(vim.api.nvim_buf_get_extmarks(self.buf, NS, 0, -1, {}))
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do
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if not self.rows[mark[2]] then
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vim.api.nvim_buf_del_extmark(self.buf, NS, mark[1])
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end
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end
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end
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function State:refresh()
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if not self.enabled then
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return
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end
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self.generation = self.generation + 1
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local gen = self.generation
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local params = {
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textDocument = vim.lsp.util.make_text_document_params(self.buf),
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}
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local function collect(new_rows, client, lens)
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local row = new_rows[lens.range.start.line]
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if not row then
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row = Row.new(lens.range.start.line)
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new_rows[lens.range.start.line] = row
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end
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if lens.command then
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row:add(lens)
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return
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end
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if
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not client
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or not client:supports_method(
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vim.lsp.protocol.Methods.codeLens_resolve
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)
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then
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return
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end
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row:await()
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client:request(
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vim.lsp.protocol.Methods.codeLens_resolve,
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lens,
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function(_, resolved)
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if self.generation ~= gen then
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return
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end
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row:resolved(type(resolved) == "table" and resolved or nil)
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row:render(self.buf)
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end,
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self.buf
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)
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end
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vim.lsp.buf_request_all(
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self.buf,
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vim.lsp.protocol.Methods.textDocument_codeLens,
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params,
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function(results)
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if self.generation ~= gen then
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return
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end
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local new_rows = {}
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for client_id, response in pairs(results) do
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if not response.err and type(response.result) == "table" then
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local client = vim.lsp.get_client_by_id(client_id)
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for _, lens in ipairs(response.result) do
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collect(new_rows, client, lens)
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end
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end
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end
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self.rows = new_rows
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self:render()
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end
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)
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end
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function State:attach()
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if self.attached then
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return
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end
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self.attached = true
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vim.api.nvim_buf_attach(self.buf, false, {
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on_lines = function()
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if not self.enabled then
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self.attached = false
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return true
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end
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refresh_debounced:call(self.buf)
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end,
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on_reload = function()
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if self.enabled then
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refresh_debounced:call(self.buf)
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end
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end,
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on_detach = function()
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self.attached = false
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end,
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})
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end
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---@param value boolean
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function State:enable(value)
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self.enabled = value
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if value then
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self:attach()
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self:refresh()
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else
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refresh_debounced:cancel(self.buf)
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self:render()
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end
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end
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function State:toggle()
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self:enable(not self.enabled)
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end
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---@param buf integer
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---@return ow.lsp.codelens.State
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local function get_state(buf)
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state_by_buf[buf] = state_by_buf[buf] or State.new(buf)
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return state_by_buf[buf]
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end
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---@param buf? integer
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---@return boolean
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function M.is_enabled(buf)
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buf = buf or vim.api.nvim_get_current_buf()
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local state = state_by_buf[buf]
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return state ~= nil and state.enabled
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end
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---@param value? boolean
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---@param buf? integer
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function M.enable(value, buf)
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if value == nil then
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value = true
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end
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buf = buf or vim.api.nvim_get_current_buf()
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get_state(buf):enable(value)
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end
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---@param buf? integer
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function M.toggle(buf)
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buf = buf or vim.api.nvim_get_current_buf()
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get_state(buf):toggle()
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end
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---@class ow.lsp.codelens.SetupOpts
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---@field position? ow.lsp.codelens.Position
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---@field separator? string
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---@param opts? ow.lsp.codelens.SetupOpts
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function M.setup(opts)
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opts = opts or {}
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if opts.position ~= nil then
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position = opts.position
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end
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if opts.separator ~= nil then
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separator = opts.separator
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end
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vim.api.nvim_create_autocmd({ "BufEnter", "LspAttach" }, {
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group = GROUP,
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callback = function(ev)
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local state = state_by_buf[ev.buf]
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if state and state.enabled then
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state:refresh()
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end
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end,
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})
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vim.api.nvim_create_autocmd({ "BufDelete", "BufWipeout" }, {
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group = GROUP,
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callback = function(ev)
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refresh_debounced:cancel(ev.buf)
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state_by_buf[ev.buf] = nil
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end,
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})
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end
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return M
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