/*
 * Copyright © 2024-2026 Apple Inc. and the Pkl project authors. All rights reserved.
 *
 * 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
 *
 *     https://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.pkl.core.util.json;

import org.jspecify.annotations.Nullable;

/** An immutable object that represents a location in the parsed text. */
public final class Location {
  /** The absolute character index, starting at 0. */
  public final int offset;

  /** The line number, starting at 1. */
  public final int line;

  /** The column number, starting at 1. */
  public final int column;

  Location(int offset, int line, int column) {
    this.offset = offset;
    this.column = column;
    this.line = line;
  }

  @Override
  public String toString() {
    return line + ":" + column;
  }

  @Override
  public int hashCode() {
    return offset;
  }

  @Override
  public boolean equals(@Nullable Object obj) {
    if (this == obj) {
      return true;
    }
    if (obj == null) {
      return false;
    }
    if (getClass() != obj.getClass()) {
      return false;
    }
    var other = (Location) obj;
    return offset == other.offset && column == other.column && line == other.line;
  }
}
