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#! /usr/bin/env ruby
# -*- coding: UTF-8 -*-
#
# Copyright 2012 Jérémy Zurcher <jeremy@asynk.ch>
#
# This file is part of edoors-ruby.
#
# edoors-ruby is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# edoors-ruby 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 Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with edoors-ruby. If not, see <http://www.gnu.org/licenses/>.
#
module Edoors
#
LNK_SRC = 'edoors_lnk_src'.freeze
LNK_DSTS = 'edoors_lnk_dsts'.freeze
LNK_KEYS = 'edoors_lnk_keys'.freeze
LNK_VALUE = 'edoors_lnk_value'.freeze
#
class Link
#
# creates a Link object from the arguments.
#
# @param [String] src link source name
# @param [Array] dsts destinations to apply to the particle on linking success
# @param [Array] keys keys to apply as link_keys to the particle on linking success
# @param [Hash] value will be used to check linking with particles
#
# @see Room#_try_links try to apply links on a Particle
# @see Particle#link_with? linking test
#
def initialize src, dsts, keys=nil, value=nil
@src = src
@dsts = dsts
@keys = keys
@value = value
@door = nil # pointer to the source set from @src by Room#add_link
end
#
# called by JSON#generate to serialize the Link object into JSON data
#
# @param [Array] a belongs to JSON generator
#
def to_json *a
{
'kls' => self.class.name,
'src' => @src,
'dsts' => @dsts,
'keys' => @keys,
'value' => @value
}.to_json *a
end
#
# creates a Link object from a JSON data
#
# @param [Hash] o belongs to JSON parser
#
# @raise Edoors::Exception if the json kls attribute is wrong
#
def self.json_create o
raise Edoors::Exception.new "JSON #{o['kls']} != #{self.name}" if o['kls'] != self.name
self.new o['src'], o['dsts'], o['keys'], o['value']
end
#
# creates a Link object from the data of a particle
#
# @param [Particle] p the Particle to get Link attributes from
#
def self.from_particle p
pl = p.payload
Edoors::Link.new pl[Edoors::LNK_SRC], pl[Edoors::LNK_DSTS], pl[Edoors::LNK_KEYS], pl[Edoors::LNK_VALUE]
end
#
attr_accessor :door
attr_reader :src, :dsts, :keys, :value
#
end
#
end
#
# EOF
|
