~drizzle-trunk/drizzle/development

/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-

 *  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:

 *

 *  Copyright (C) 2008 Sun Microsystems, Inc.

 *

 *  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; version 2 of the License.

 *

 *  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 St, Fifth Floor, Boston, MA  02110-1301  USA

 */

#pragma once

#include <cstddef>

#include <drizzled/util/data_ref.h>

namespace drizzled {

/*

  lex_string_t -- a pair of a C-string and its length.

*/

/* This definition must match the one given in mysql/plugin.h */

struct lex_string_t

{

  const char* begin() const

  {

    return data();

  }

  const char* end() const

  {

    return data() + size();

  }

  const char* data() const

  {

    return str_;

  }

  size_t size() const

  {

    return length_;

  }

  void assign(const char* d, size_t s)

  {

    str_= const_cast<char*>(d);

    length_ = s;

  }

  void operator=(str_ref v)

  {

    assign(v.data(), v.size());

  }

  char* str_;

  size_t length_;

};

inline const lex_string_t &null_lex_string()

{

  static lex_string_t tmp= { NULL, 0 };

  return tmp;

}

struct execute_string_t : public lex_string_t

{

private:

  bool is_variable;

public:

  bool isVariable() const

  {

    return is_variable;

  }

  void set(const lex_string_t& s, bool is_variable_arg= false)

  {

    is_variable= is_variable_arg;

    static_cast<lex_string_t&>(*this) = s;

  }

};

#define STRING_WITH_LEN(X) (X), (sizeof(X) - 1)

#define C_STRING_WITH_LEN(X) const_cast<char*>(X), (sizeof(X) - 1)

} /* namespace drizzled */