/*

 * Copyright (c) 2015, 2018 Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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 */

#include "logging/logConfiguration.hpp"

#include "logging/logSelection.hpp"

#include "logging/logTag.hpp"

#include "memory/allocation.hpp"

#include "utilities/debug.hpp"

#include "utilities/globalDefinitions.hpp"

class LogTagSet;

// Class used to temporary encode a series of log selections during log configuration.

// Consists of ordered LogSelections, i.e. "tag1+tag2=level1,tag3*=level2".

class LogSelectionList : public StackObj {

 public:

  static const size_t MaxSelections = 256;

 private:

  friend void LogConfiguration::configure_stdout(LogLevelType, int, ...);

  size_t _nselections;

  LogSelection _selections[MaxSelections];

 public:

  LogSelectionList() : _nselections(0) {

  }

  LogSelectionList(const LogSelection& selection) : _nselections(1) {

    _selections[0] = selection;

  }

  bool parse(const char* str, outputStream* errstream = NULL);

  LogLevelType level_for(const LogTagSet& ts) const;

  // Verify that each selection actually selects something.

  // Returns false if some invalid selection was found. If given an outputstream,

  // this function will list all the invalid selections on the stream.

  bool verify_selections(outputStream* out = NULL) const;

};