示例#1
0
  public void setExpr(PExpr node) {
    if (this._expr_ != null) {
      this._expr_.parent(null);
    }

    if (node != null) {
      if (node.parent() != null) {
        node.parent().removeChild(node);
      }

      node.parent(this);
    }

    this._expr_ = node;
  }