# Copyright (c) 2004, Jamis Buck (jamis@jamisbuck.org)
# All rights reserved.

# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:

# * Redistributions of source code must retain the above copyright
#   notice, this list of conditions and the following disclaimer.

# * Redistributions in binary form must reproduce the above copyright
#   notice, this list of conditions and the following disclaimer in
#   the documentation and/or other materials provided with the
#   distribution.

# * The names of its contributors may not be used to endorse or
#   promote products derived from this software without specific prior
#   written permission.

# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.

module SQLite3

  class Exception < ::StandardError
    @code = 0

    # The numeric error code that this exception represents.
    def self.code
      @code
    end

    # A convenience for accessing the error code for this exception.
    def code
      self.class.code
    end
  end

  class SQLException < Exception; end
  class InternalException < Exception; end
  class PermissionException < Exception; end
  class AbortException < Exception; end
  class BusyException < Exception; end
  class LockedException < Exception; end
  class MemoryException < Exception; end
  class ReadOnlyException < Exception; end
  class InterruptException < Exception; end
  class IOException < Exception; end
  class CorruptException < Exception; end
  class NotFoundException < Exception; end
  class FullException < Exception; end
  class CantOpenException < Exception; end
  class ProtocolException < Exception; end
  class EmptyException < Exception; end
  class SchemaChangedException < Exception; end
  class TooBigException < Exception; end
  class ConstraintException < Exception; end
  class MismatchException < Exception; end
  class MisuseException < Exception; end
  class UnsupportedException < Exception; end
  class AuthorizationException < Exception; end
  class FormatException < Exception; end
  class RangeException < Exception; end
  class NotADatabaseException < Exception; end

  EXCEPTIONS =
    [
     nil, SQLException, InternalException,
     PermissionException, AbortException, BusyException,
     LockedException, MemoryException, ReadOnlyException,
     InterruptException, IOException, CorruptException,
     NotFoundException, FullException, CantOpenException,
     ProtocolException, EmptyException, SchemaChangedException,
     TooBigException, ConstraintException, MismatchException,
     MisuseException, UnsupportedException, AuthorizationException,
     FormatException, RangeException, NotADatabaseException
    ].each_with_index { |e,i| e.instance_variable_set(:@code, i ) if e }

  module Error
    def check( result, db=nil, msg=nil )
      unless result == Constants::ErrorCode::OK
        msg = ( msg ? msg + ": " : "" ) + db.errmsg if db
        raise(( EXCEPTIONS[result] || SQLite3::Exception ), msg)
      end
    end
    module_function :check
  end

end