/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.
 */

package org.apache.fory.codegen;

/** Code formatter to format generated code for better readability. */
public class CodeFormatter {

  /** Format code to add line number for debug. */
  public static String format(String code) {
    StringBuilder codeBuilder = new StringBuilder(code.length());
    String[] split = code.split("\n", -1);
    int lineCount = 0;
    for (int i = 0; i < split.length; i++) {
      lineCount++;
      codeBuilder.append(String.format("/* %04d */ ", lineCount));
      codeBuilder.append(split[i]).append('\n');
    }
    if (code.charAt(code.length() - 1) == '\n') {
      return codeBuilder.toString();
    } else {
      // remove extra newline character
      return codeBuilder.substring(0, codeBuilder.length() - 1);
    }
  }
}
