File Content: value.rb # frozen_string_literal: true require 'fiddle' module Fiddle module ValueUtil #:nodoc: all def unsigned_value(val, ty) case ty.abs when TYPE_CHAR [val].pack("c").unpack("C")[0] when TYPE_SHORT [val].pack("s!").unpack("S!")[0] when TYPE_INT [val].pack("i!").unpack("I!")[0] when TYPE_LONG [val].pack("l!").unpack("L!")[0] else if defined?(TYPE_LONG_LONG) and ty.abs == TYPE_LONG_LONG [val].pack("q").unpack("Q")[0] else val end end end def signed_value(val, ty) case ty.abs when TYPE_CHAR [val].pack("C").unpack("c")[0] when TYPE_SHORT [val].pack("S!").unpack("s!")[0] when TYPE_INT [val].pack("I!").unpack("i!")[0] when TYPE_LONG [val].pack("L!").unpack("l!")[0] else if defined?(TYPE_LONG_LONG) and ty.abs == TYPE_LONG_LONG [val].pack("Q").unpack("q")[0] else val end end end def wrap_args(args, tys, funcs, &block) result = [] tys ||= [] args.each_with_index{|arg, idx| result.push(wrap_arg(arg, tys[idx], funcs, &block)) } result end def wrap_arg(arg, ty, funcs = [], &block) funcs ||= [] case arg when nil return 0 when Pointer return arg.to_i when IO case ty when TYPE_VOIDP return Pointer[arg].to_i else return arg.to_i end when Function if( block ) arg.bind_at_call(&block) funcs.push(arg) elsif !arg.bound? raise(RuntimeError, "block must be given.") end return arg.to_i when String if( ty.is_a?(Array) ) return arg.unpack('C*') else case SIZEOF_VOIDP when SIZEOF_LONG return [arg].pack("p").unpack("l!")[0] else if defined?(SIZEOF_LONG_LONG) and SIZEOF_VOIDP == SIZEOF_LONG_LONG return [arg].pack("p").unpack("q")[0] else raise(RuntimeError, "sizeof(void*)?") end end end when Float, Integer return arg when Array if( ty.is_a?(Array) ) # used only by struct case ty[0] when TYPE_VOIDP return arg.collect{|v| Integer(v)} when TYPE_CHAR if( arg.is_a?(String) ) return val.unpack('C*') end end return arg else return arg end else if( arg.respond_to?(:to_ptr) ) return arg.to_ptr.to_i else begin return Integer(arg) rescue raise(ArgumentError, "unknown argument type: #{arg.class}") end end end end end end Submit