/**
 * Copyright (c) 2016-2018 TypeFox and others.
 * 
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v. 2.0 which is available at
 * http://www.eclipse.org/legal/epl-2.0,
 * or the Eclipse Distribution License v. 1.0 which is available at
 * http://www.eclipse.org/org/documents/edl-v10.php.
 * 
 * SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause
 */
package org.eclipse.lsp4j;

import org.eclipse.lsp4j.Position;
import org.eclipse.lsp4j.jsonrpc.validation.NonNull;
import org.eclipse.lsp4j.util.Preconditions;
import org.eclipse.xtext.xbase.lib.Pure;
import org.eclipse.xtext.xbase.lib.util.ToStringBuilder;

/**
 * A range in a text document expressed as (zero-based) start and end positions.
 */
@SuppressWarnings("all")
public class Range {
  /**
   * The range's start position
   */
  @NonNull
  private Position start;
  
  /**
   * The range's end position
   */
  @NonNull
  private Position end;
  
  public Range() {
  }
  
  public Range(@NonNull final Position start, @NonNull final Position end) {
    this.start = Preconditions.<Position>checkNotNull(start, "start");
    this.end = Preconditions.<Position>checkNotNull(end, "end");
  }
  
  /**
   * The range's start position
   */
  @Pure
  @NonNull
  public Position getStart() {
    return this.start;
  }
  
  /**
   * The range's start position
   */
  public void setStart(@NonNull final Position start) {
    this.start = Preconditions.checkNotNull(start, "start");
  }
  
  /**
   * The range's end position
   */
  @Pure
  @NonNull
  public Position getEnd() {
    return this.end;
  }
  
  /**
   * The range's end position
   */
  public void setEnd(@NonNull final Position end) {
    this.end = Preconditions.checkNotNull(end, "end");
  }
  
  @Override
  @Pure
  public String toString() {
    ToStringBuilder b = new ToStringBuilder(this);
    b.add("start", this.start);
    b.add("end", this.end);
    return b.toString();
  }
  
  @Override
  @Pure
  public boolean equals(final Object obj) {
    if (this == obj)
      return true;
    if (obj == null)
      return false;
    if (getClass() != obj.getClass())
      return false;
    Range other = (Range) obj;
    if (this.start == null) {
      if (other.start != null)
        return false;
    } else if (!this.start.equals(other.start))
      return false;
    if (this.end == null) {
      if (other.end != null)
        return false;
    } else if (!this.end.equals(other.end))
      return false;
    return true;
  }
  
  @Override
  @Pure
  public int hashCode() {
    final int prime = 31;
    int result = 1;
    result = prime * result + ((this.start== null) ? 0 : this.start.hashCode());
    return prime * result + ((this.end== null) ? 0 : this.end.hashCode());
  }
}