// Copyright (C) 2025 The Android Open Source Project
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

import {language} from './language.js';
import {TreeCursor} from '@lezer/common';

// Helper function to pretty-print the CST
function printCST(cursor: TreeCursor, source: string, indent = 0) {
  const nodeName = cursor.name;
  const nodeText = source.substring(cursor.from, cursor.to);

  console.log(`${'  '.repeat(indent)}${nodeName}: "${nodeText}"`);

  if (cursor.firstChild()) {
    do {
      printCST(cursor, source, indent + 1);
    } while (cursor.nextSibling());
    cursor.parent(); // Important: Move back up to the parent
  }
}

describe('perfettoSqlLang', () => {
  test('simple', () => {
    const code = 'select * from slice limit 100';
    const tree = language.parser.parse(code);
    const cursor = tree.cursor();
    const spec = ['Keyword', 'identifier', 'Keyword', 'identifier'];
    console.log(printCST(cursor, code), spec);
  });
});