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/**
 * Copyright (c) 2014 SQUARESPACE, Inc.
 *
 * 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.
 */

package com.squarespace.less.model;


/**
 * Represents the set of known CSS combinators.
 */
public enum Combinator {

  CHILD('>'),
  DESC(' '),
  NAMESPACE('|'),
  SIB_ADJ('+'),
  SIB_GEN('~');

  private final char ch;

  Combinator(char ch) {
    this.ch = ch;
  }

  public char getChar() {
    return ch;
  }

  public static Combinator fromChar(char ch) {
    switch (ch) {
      case '>':
        return CHILD;
      case ' ':
        return DESC;
      case '|':
        return NAMESPACE;
      case '+':
        return SIB_ADJ;
      case '~':
        return SIB_GEN;
      default:
        break;
    }
    return null;
  }

}