Class: GirFFI::ArgumentBuilder

Inherits:
BaseArgumentBuilder show all
Defined in:
lib/gir_ffi/argument_builder.rb

Overview

Implements building pre- and post-processing statements for arguments.

Constant Summary

Constants inherited from BaseArgumentBuilder

BaseArgumentBuilder::KEYWORDS, BaseArgumentBuilder::TAG_TO_WRAPPER_CLASS_MAP

Instance Attribute Summary

Attributes inherited from BaseArgumentBuilder

#array_arg, #length_arg, #name

Instance Method Summary collapse

Methods inherited from BaseArgumentBuilder

#argument_class_name, #array_size, #callarg, #cleanup, #elm_t, #retval, #safe, #specialized_type_tag, #subtype_tag_or_class_name, #type_info

Constructor Details

#initialize(var_gen, arginfo) ⇒ ArgumentBuilder

Returns a new instance of ArgumentBuilder.



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# File 'lib/gir_ffi/argument_builder.rb', line 6

def initialize var_gen, arginfo
  super var_gen, arginfo.name, arginfo.argument_type, arginfo.direction
  @arginfo = arginfo
end

Instance Method Details

#inarg ⇒ Object 



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# File 'lib/gir_ffi/argument_builder.rb', line 11

def inarg
  if has_input_value?
    @array_arg.nil? ? @name : nil
  end
end

#post ⇒ Object 



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# File 'lib/gir_ffi/argument_builder.rb', line 33

def post
  if has_output_value?
    value = output_value
    ["#{retname} = #{value}"]
  else
    []
  end
end

#pre ⇒ Object 



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# File 'lib/gir_ffi/argument_builder.rb', line 23

def pre
  pr = []
  if has_input_value?
    pr << fixed_array_size_check if needs_size_check?
    pr << array_length_assignment if is_array_length_parameter?
  end
  pr << set_function_call_argument
  pr
end

#retname ⇒ Object 



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# File 'lib/gir_ffi/argument_builder.rb', line 17

def retname
  if has_output_value?
    @retname ||= @var_gen.new_var
  end
end