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// debug.h -- gold internal debugging support   -*- C++ -*-

// Copyright 2007, 2008 Free Software Foundation, Inc.

// Written by Ian Lance Taylor <iant@google.com>.

// This file is part of gold.

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

// it under the terms of the GNU General Public License as published by

// the Free Software Foundation; either version 3 of the License, or

// (at your option) any later version.

// This program 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 for more details.

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

// along with this program; if not, write to the Free Software

// Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,

// MA 02110-1301, USA.

#ifndef GOLD_DEBUG_H

#define GOLD_DEBUG_H

#include <cstring>

#include "parameters.h"

#include "errors.h"

namespace gold

{

// The different types of debugging we support.  These are bitflags.

const int DEBUG_TASK = 0x1;

const int DEBUG_SCRIPT = 0x2;

const int DEBUG_FILES = 0x4;

const int DEBUG_RELAXATION = 0x8;

const int DEBUG_ALL = (DEBUG_TASK | DEBUG_SCRIPT | DEBUG_FILES

                       | DEBUG_RELAXATION);

// Convert a debug string to the appropriate enum.

inline int

debug_string_to_enum(const char* arg)

{

  static const struct { const char* name; int value; }

  debug_options[] =

  {

    { "task", DEBUG_TASK },

    { "script", DEBUG_SCRIPT },

    { "files", DEBUG_FILES },

    { "relaxation", DEBUG_RELAXATION },

    { "all", DEBUG_ALL }

  };

  int retval = 0;

  for (size_t i = 0; i < sizeof(debug_options) / sizeof(*debug_options); ++i)

    if (strstr(arg, debug_options[i].name))

      retval |= debug_options[i].value;

  return retval;

}

// Print a debug message if TYPE is enabled.  This is a macro so that

// we only evaluate the arguments if necessary.

#define gold_debug(TYPE, FORMAT, ...)                           \

  do                                                            \

    {                                                           \

      if (is_debugging_enabled(TYPE))                           \

        parameters->errors()->debug(FORMAT, __VA_ARGS__);       \

    }                                                           \

  while (0)

} // End namespace gold.

#endif // !defined(GOLD_DEBUG_H)