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https://github.com/neovim/neovim.git
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9aa4608401
Problem: `nvim_create_autocmd` is too verbose and its `callback` requires extra "nesting". Solution: Introduce `nvim_on`. Start using it internally. Then we can get a feel for how it should look before making it public.
311 lines
9.1 KiB
Lua
311 lines
9.1 KiB
Lua
local api = vim.api
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local nvim_on = require('vim._core.util').nvim_on
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local severity_module = require('vim.diagnostic._severity')
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--- @class (private) vim.diagnostic._store
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local M = {}
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-- bufnr -> ns -> Diagnostic[]
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local diagnostic_cache = {} --- @type table<integer,table<integer,vim.Diagnostic[]?>>
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local group = api.nvim_create_augroup('nvim.diagnostic.buf_wipeout', {})
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setmetatable(diagnostic_cache, {
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--- @param t table<integer,vim.Diagnostic[]>
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--- @param bufnr integer
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__index = function(t, bufnr)
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assert(bufnr > 0, 'Invalid buffer number')
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nvim_on('BufWipeout', group, { buf = bufnr }, function()
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rawset(t, bufnr, nil)
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end)
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t[bufnr] = {}
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return t[bufnr]
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end,
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})
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--- @param bufnr integer
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--- @param namespace integer
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--- @param d vim.Diagnostic.Set
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local function norm_diag(bufnr, namespace, d)
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vim.validate('diagnostic.lnum', d.lnum, 'number')
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local d1 = d --[[@as vim.Diagnostic]]
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d1.severity = d.severity and severity_module.to_severity(d.severity)
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or vim.diagnostic.severity.ERROR
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d1.end_lnum = d.end_lnum or d.lnum
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d1.col = d.col or 0
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d1.end_col = d.end_col or d.col or 0
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d1.namespace = namespace
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d1.bufnr = bufnr
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end
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--- Execute a given function now if the given buffer is already loaded or once it is loaded later.
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---
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--- @param bufnr integer Buffer number
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--- @param fn fun()
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--- @return integer?
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local function once_buf_loaded(bufnr, fn)
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if api.nvim_buf_is_loaded(bufnr) then
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fn()
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else
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return nvim_on('BufRead', nil, {
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buf = bufnr,
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once = true,
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}, function()
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fn()
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end)
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end
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end
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--- @param bufnr integer?
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--- @param opts vim.diagnostic.GetOpts?
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--- @param clamp boolean
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--- @return vim.Diagnostic[]
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function M.get_diagnostics(bufnr, opts, clamp)
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opts = opts or {}
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local namespace = opts.namespace
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if type(namespace) == 'number' then
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namespace = { namespace }
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end
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--- @cast namespace integer[]
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--- @type vim.Diagnostic[]
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local diagnostics = {}
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-- Memoized results of buf_line_count per bufnr
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--- @type table<integer,integer>
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local buf_line_count = setmetatable({}, {
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--- @param t table<integer,integer>
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--- @param k integer
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--- @return integer
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__index = function(t, k)
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t[k] = api.nvim_buf_line_count(k)
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return rawget(t, k)
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end,
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})
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local match_severity = opts.severity and severity_module.severity_predicate(opts.severity)
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or function(_)
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return true
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end
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--- @param b integer
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--- @param d vim.Diagnostic
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local match_enablement = function(d, b)
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if opts.enabled == nil then
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return true
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end
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local enabled = vim.diagnostic.is_enabled({ bufnr = b, ns_id = d.namespace })
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return (enabled and opts.enabled) or (not enabled and not opts.enabled)
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end
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--- @param b integer
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--- @param d vim.Diagnostic
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local function add(b, d)
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if
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match_severity(d)
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and match_enablement(d, b)
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and (not opts.lnum or (opts.lnum >= d.lnum and opts.lnum <= (d.end_lnum or d.lnum)))
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then
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if clamp and api.nvim_buf_is_loaded(b) then
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local line_count = buf_line_count[b] - 1
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if
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d.lnum > line_count
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or d.end_lnum > line_count
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or d.lnum < 0
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or d.end_lnum < 0
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or d.col < 0
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or d.end_col < 0
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then
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d = vim.deepcopy(d, true)
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d.lnum = math.max(math.min(d.lnum, line_count), 0)
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d.end_lnum = math.max(math.min(d.end_lnum, line_count), 0)
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d.col = math.max(d.col, 0)
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d.end_col = math.max(d.end_col, 0)
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end
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end
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table.insert(diagnostics, d)
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end
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end
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--- @param buf integer
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--- @param diags vim.Diagnostic[]
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local function add_all_diags(buf, diags)
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for _, diagnostic0 in pairs(diags) do
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add(buf, diagnostic0)
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end
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end
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if not namespace and not bufnr then
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for buf, ns_diags in pairs(diagnostic_cache) do
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for _, diags in pairs(ns_diags) do
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add_all_diags(buf, diags)
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end
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end
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elseif not namespace then
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bufnr = vim._resolve_bufnr(bufnr)
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for iter_namespace in pairs(diagnostic_cache[bufnr]) do
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add_all_diags(bufnr, diagnostic_cache[bufnr][iter_namespace])
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end
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elseif bufnr == nil then
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for b, t in pairs(diagnostic_cache) do
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for _, iter_namespace in ipairs(namespace) do
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add_all_diags(b, t[iter_namespace] or {})
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end
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end
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else
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bufnr = vim._resolve_bufnr(bufnr)
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for _, iter_namespace in ipairs(namespace) do
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add_all_diags(bufnr, diagnostic_cache[bufnr][iter_namespace] or {})
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end
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end
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return diagnostics
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end
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--- @return integer[]
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function M.get_bufnrs()
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return vim.tbl_keys(diagnostic_cache)
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end
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--- @param bufnr integer
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--- @return integer[]
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function M.get_buf_namespaces(bufnr)
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return vim.tbl_keys(diagnostic_cache[vim._resolve_bufnr(bufnr)])
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end
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--- @param namespace integer
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--- @param bufnr integer
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function M.clear(namespace, bufnr)
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diagnostic_cache[vim._resolve_bufnr(bufnr)][namespace] = nil
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end
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--- @param bufnr integer
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function M.drop_buf(bufnr)
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diagnostic_cache[vim._resolve_bufnr(bufnr)] = nil
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end
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--- Set diagnostics for the given namespace and buffer.
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---
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--- @param namespace integer The diagnostic namespace
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--- @param bufnr integer Buffer number
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--- @param diagnostics vim.Diagnostic.Set[]
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function M.set(namespace, bufnr, diagnostics)
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vim.validate('namespace', namespace, 'number')
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vim.validate('bufnr', bufnr, 'number')
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vim.validate('diagnostics', diagnostics, vim.islist, 'a list of diagnostics')
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bufnr = vim._resolve_bufnr(bufnr)
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for _, diagnostic0 in ipairs(diagnostics) do
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norm_diag(bufnr, namespace, diagnostic0)
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end
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--- @cast diagnostics vim.Diagnostic[]
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if vim.tbl_isempty(diagnostics) then
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diagnostic_cache[bufnr][namespace] = nil
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else
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diagnostic_cache[bufnr][namespace] = diagnostics
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end
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-- Compute positions, set them as extmarks, and store in diagnostic._extmark_id
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-- (used by get_logical_pos to adjust positions).
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once_buf_loaded(bufnr, function()
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local ns = vim.diagnostic.get_namespace(namespace)
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if not ns.user_data.location_ns then
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ns.user_data.location_ns =
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api.nvim_create_namespace(string.format('nvim.%s.diagnostic', ns.name))
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end
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api.nvim_buf_clear_namespace(bufnr, ns.user_data.location_ns, 0, -1)
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local lines = api.nvim_buf_get_lines(bufnr, 0, -1, true)
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-- set extmarks at diagnostic locations to preserve logical positions despite text changes
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for _, diagnostic0 in ipairs(diagnostics) do
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local last_row = #lines - 1
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local row = math.max(0, math.min(diagnostic0.lnum, last_row))
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local row_len = #lines[row + 1]
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local col = math.max(0, math.min(diagnostic0.col, row_len - 1))
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local end_row = math.max(0, math.min(diagnostic0.end_lnum or row, last_row))
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local end_row_len = #lines[end_row + 1]
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local end_col = math.max(0, math.min(diagnostic0.end_col or col, end_row_len))
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if end_row == row then
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-- avoid starting an extmark beyond end of the line
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if end_col == col then
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end_col = math.min(end_col + 1, end_row_len)
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end
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else
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-- avoid ending an extmark before start of the line
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if end_col == 0 then
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end_row = end_row - 1
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local end_line = lines[end_row + 1]
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if not end_line then
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error(
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'Failed to adjust diagnostic position to the end of a previous line. #lines in a buffer: '
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.. #lines
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.. ', lnum: '
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.. diagnostic0.lnum
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.. ', col: '
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.. diagnostic0.col
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.. ', end_lnum: '
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.. diagnostic0.end_lnum
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.. ', end_col: '
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.. diagnostic0.end_col
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)
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end
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end_col = #end_line
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end
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end
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diagnostic0._extmark_id =
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api.nvim_buf_set_extmark(bufnr, ns.user_data.location_ns, row, col, {
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end_row = end_row,
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end_col = end_col,
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invalidate = true,
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})
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end
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end)
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end
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--- @param bufnr integer? Buffer number to get diagnostics from. Use 0 for
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--- current buffer or nil for all buffers.
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--- @param opts? vim.diagnostic.GetOpts
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--- @return vim.Diagnostic[] : Fields `bufnr`, `end_lnum`, `end_col`, and `severity`
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--- are guaranteed to be present.
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function M.get(bufnr, opts)
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vim.validate('bufnr', bufnr, 'number', true)
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vim.validate('opts', opts, 'table', true)
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return vim.deepcopy(M.get_diagnostics(bufnr, opts, false), true)
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end
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--- @param bufnr? integer Buffer number to get diagnostics from. Use 0 for
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--- current buffer or nil for all buffers.
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--- @param opts? vim.diagnostic.GetOpts
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--- @return table<integer, integer> : Table with actually present severity values as keys
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--- (see |diagnostic-severity|) and integer counts as values.
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function M.count(bufnr, opts)
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vim.validate('bufnr', bufnr, 'number', true)
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vim.validate('opts', opts, 'table', true)
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local diagnostics = M.get_diagnostics(bufnr, opts, false)
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local count = {} --- @type table<integer,integer>
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for _, d in ipairs(diagnostics) do
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count[d.severity] = (count[d.severity] or 0) + 1
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end
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return count
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end
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return M
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