#--
# =============================================================================== 
# Copyright (c) 2005, 2006 Christopher Kleckner
# All rights reserved
#
# This file is part of the Rio library for ruby.
#
# Rio 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 2 of the License, or
# (at your option) any later version.
#
# Rio 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 Rio; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
# =============================================================================== 
#++
#
# To create the documentation for Rio run the command
#  ruby build_doc.rb
# from the distribution directory. Then point your browser at the 'doc/rdoc' directory.
#
# Suggested Reading
# * RIO::Doc::SYNOPSIS
# * RIO::Doc::INTRO
# * RIO::Doc::HOWTO
# * RIO::Rio
#
# <b>Rio is pre-alpha software. 
# The documented interface and behavior is subject to change without notice.</b>


require 'rio/exception/state'
module RIO

  module State
    class Error < Base
      attr_accessor :obj,:msg,:sym
      def initialize
        super
        @obj = nil
        @msg = nil
        @sym = nil
#        self.send(sym,*args) #unless obj == self
      end
      def check?() true end
      def when_missing(sym,*args) self end
      def method_missing(sym,*args,&block)
 #       emsg = sprintf("Can't Handle %s[%s].%s(%s)",@obj.class.to_s,@obj.to_s,sym.to_s,args.join(','))
 #       emsg += "\n  "+@msg unless @msg.nil? or @msg.empty?
        emsg = @msg
        raise Exception::CantHandle.new(@obj,sym,*args),emsg
      end
      def self.error(emsg,obj,sym,*args)
        require 'rio/exception'
        state = new
        state.obj = obj
        state.sym = sym
        msg = sprintf("%s[%s].%s(%s)",obj.class.to_s,obj.to_s,sym.to_s,args.join(','))
        msg += "\n  "+emsg unless emsg.nil? or emsg.empty?
        state.msg = msg
        state
#        raise CantHandle.new(obj,sym,*args),emsg
      end
    end
  end 

end # module RIO