# # Copyright (C) 2013 Christian Meier # # Permission is hereby granted, free of charge, to any person obtaining a copy of # this software and associated documentation files (the "Software"), to deal in # the Software without restriction, including without limitation the rights to # use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of # the Software, and to permit persons to whom the Software is furnished to do so, # subject to the following conditions: # # The above copyright notice and this permission notice shall be included in all # copies or substantial portions of the Software. # # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS # FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR # COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER # IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN # CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. # module Ixtlan module Babel class Context def initialize( options ) @only = options[ :only ].collect { |o| o.to_s } if options[ :only ] @except = ( options[:except] || [] ).collect { |e| e.to_s } opts = options[ :include ] @include = case opts when Array opts.collect { |i| i.to_s } when Hash Hash[ opts.collect { |k,v| [ k.to_s, v ] } ] else [] end @methods = (options[:methods] || []).collect { |m| m.to_s } end def methods @methods + ( @include.is_a?( Array ) ? @include : @include.keys ) end def allowed?( key ) ( @only && @only.include?( key ) ) || ( @only.nil? && !@except.include?( key ) ) || @methods.include?( key ) end def include?( key ) @include.include? key end def array? @include.is_a?( Array ) end def []( key ) self.class.new( @include.is_a?( Array ) ? {} : @include[ key ] ) end end end end