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Edit File: variadic.rb
# # Copyright (C) 2008, 2009 Wayne Meissner # Copyright (C) 2009 Luc Heinrich # # This file is part of ruby-ffi. # # 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. # * Neither the name of the Ruby FFI project nor the names of its contributors # may 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 FFI class VariadicInvoker def call(*args, &block) param_types = Array.new(@fixed) param_values = Array.new @fixed.each_with_index do |t, i| param_values << args[i] end i = @fixed.length while i < args.length param_types << FFI.find_type(args[i], @type_map) param_values << args[i + 1] i += 2 end invoke(param_types, param_values, &block) end # # Attach the invoker to module +mod+ as +mname+ # def attach(mod, mname) invoker = self params = "*args" call = "call" mod.module_eval <<-code @@#{mname} = invoker def self.#{mname}(#{params}) @@#{mname}.#{call}(#{params}) end def #{mname}(#{params}) @@#{mname}.#{call}(#{params}) end code invoker end end end