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path: root/scripts/check-queries.lua
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#!/usr/bin/env -S nvim -l
vim.opt.rtp:prepend "./"

-- Equivalent to print(), but this will ensure consistent output regardless of
-- operating system.
local function io_print(text)
  if not text then
    text = ""
  end
  io.write(text, "\n")
end

local function extract_captures()
  local lines = vim.fn.readfile "CONTRIBUTING.md"
  local captures = {}
  local current_query

  for _, line in ipairs(lines) do
    if vim.startswith(line, "### ") then
      current_query = vim.fn.tolower(line:sub(5))
    elseif vim.startswith(line, "@") and current_query then
      if not captures[current_query] then
        captures[current_query] = {}
      end

      table.insert(captures[current_query], vim.split(line:sub(2), " ", true)[1])
    end
  end

  -- Complete captures for injections.
  local parsers = vim.tbl_keys(require("nvim-treesitter.parsers").list)
  for _, lang in pairs(parsers) do
    table.insert(captures["injections"], lang)
  end

  return captures
end

local function do_check()
  local timings = {}
  local queries = require "nvim-treesitter.query"
  local parsers = #_G.arg > 0 and { unpack(_G.arg) } or require("nvim-treesitter.info").installed_parsers()
  local query_types = queries.built_in_query_groups

  local captures = extract_captures()
  local errors = {}

  io_print "::group::Check parsers"

  for _, lang in pairs(parsers) do
    timings[lang] = {}
    for _, query_type in pairs(query_types) do
      local before = vim.loop.hrtime()
      local ok, query = pcall(queries.get_query, lang, query_type)
      local after = vim.loop.hrtime()
      local duration = after - before
      table.insert(timings, { duration = duration, lang = lang, query_type = query_type })
      io_print("Checking " .. lang .. " " .. query_type .. string.format(" (%.02fms)", duration * 1e-6))
      if not ok then
        local err_msg = lang .. " (" .. query_type .. "): " .. query
        errors[#errors + 1] = err_msg
      else
        if query then
          for _, capture in ipairs(query.captures) do
            local is_valid = (
              vim.startswith(capture, "_") -- Helpers.
              or vim.tbl_contains(captures[query_type], capture)
            )
            if not is_valid then
              local error = string.format("(x) Invalid capture @%s in %s for %s.", capture, query_type, lang)
              errors[#errors + 1] = error
            end
          end
        end
      end
    end
  end

  io_print "::endgroup::"

  if #errors > 0 then
    io_print "\nCheck failed!\nErrors:"
    for _, err in ipairs(errors) do
      print(err)
    end
    error()
  end
  return timings
end

local ok, result = pcall(do_check)
local allowed_to_fail = vim.split(vim.env.ALLOWED_INSTALLATION_FAILURES or "", ",", true)

for k, v in pairs(require("nvim-treesitter.parsers").get_parser_configs()) do
  if not require("nvim-treesitter.parsers").has_parser(k) then
    -- On CI all parsers that can be installed from C files should be installed
    if
      vim.env.CI
      and not v.install_info.requires_generate_from_grammar
      and not vim.tbl_contains(allowed_to_fail, k)
    then
      io_print("Error: parser for " .. k .. " is not installed")
      vim.cmd "cq"
    else
      io_print("Warning: parser for " .. k .. " is not installed")
    end
  end
end

if ok then
  io_print "::group::Timings"
  table.sort(result, function(a, b)
    return a.duration < b.duration
  end)
  for i, val in ipairs(result) do
    io_print(string.format("%i. %.02fms %s %s", #result - i + 1, val.duration * 1e-6, val.lang, val.query_type))
  end
  io_print "::endgroup::"
  io_print "Check successful!"
  vim.cmd "q"
else
  vim.cmd "cq"
end