Method plus

basex-core/src/main/java/org/basex/query/var/VarUsage.java:33–35

Combines the usages for two expressions that are both executed. @param other usage count to be combined @return number of usages of both expressions combined

(final VarUsage other)

   * @return number of usages of both expressions combined
   */
  public VarUsage plus(final VarUsage other) {
    return this == NEVER ? other : other == NEVER ? this : MORE_THAN_ONCE;
  }

  /**
   * Number of usages if the code is executed {@code count} times.