class GirFFI::Builders::CToRubyConvertor
Builder
that generates code to convert values from C to Ruby. Used by argument builders.
Public Class Methods
new(type_info, argument, length_arg, ownership_transfer: nil)
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# File lib/gir_ffi/builders/c_to_ruby_convertor.rb, line 8 def initialize(type_info, argument, length_arg, ownership_transfer: nil) @type_info = type_info @argument = argument @length_arg = length_arg @ownership_transfer = ownership_transfer end
Public Instance Methods
conversion()
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# File lib/gir_ffi/builders/c_to_ruby_convertor.rb, line 15 def conversion case @type_info.flattened_tag when :utf8, :filename if @ownership_transfer == :everything "GirFFI::AllocationHelper.free_after #{@argument}, &:to_utf8" else "#{@argument}.to_utf8" end when :object base = "#{@type_info.argument_class_name}.wrap(#{conversion_argument_list})" @ownership_transfer == :nothing ? "#{base}.tap { |it| it && it.ref }" : base else "#{argument_class}.#{conversion_method}(#{conversion_argument_list})" end end
Private Instance Methods
argument_class()
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# File lib/gir_ffi/builders/c_to_ruby_convertor.rb, line 66 def argument_class @type_info.argument_class_name end
array_size()
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# File lib/gir_ffi/builders/c_to_ruby_convertor.rb, line 62 def array_size @length_arg || @type_info.array_fixed_size end
conversion_argument_list()
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# File lib/gir_ffi/builders/c_to_ruby_convertor.rb, line 49 def conversion_argument_list conversion_arguments.join(", ") end
conversion_arguments()
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# File lib/gir_ffi/builders/c_to_ruby_convertor.rb, line 53 def conversion_arguments case @type_info.flattened_tag when :c [@type_info.element_type.inspect, array_size, @argument] else @type_info.extra_conversion_arguments.map(&:inspect).push(@argument) end end
conversion_method()
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# File lib/gir_ffi/builders/c_to_ruby_convertor.rb, line 33 def conversion_method case @type_info.flattened_tag when :struct, :union case @ownership_transfer when :everything "wrap_own" when :nothing "wrap_copy" else "wrap" end else "wrap" end end