Class: GirFFI::Builders::CallbackArgumentBuilder

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

Overview

Convertor for arguments for ruby callbacks. Used when building the argument mapper for callbacks.

Direct Known Subclasses

ClosureArgumentBuilder

Constant Summary

Constants inherited from BaseArgumentBuilder

BaseArgumentBuilder::KEYWORDS

Instance Attribute Summary

Attributes inherited from BaseArgumentBuilder

#arginfo, #array_arg, #is_closure, #length_arg

Instance Method Summary collapse

Methods inherited from BaseArgumentBuilder

#argument_class_name, #array_length_idx, #callarg, #direction, #initialize, #name, #new_variable, #safe, #specialized_type_tag, #type_info

Constructor Details

This class inherits a constructor from GirFFI::Builders::BaseArgumentBuilder

Instance Method Details

#call_argument_name ⇒ Object 



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# File 'lib/gir_ffi/builders/callback_argument_builder.rb', line 19

def call_argument_name
  if direction == :in
    pre_converted_name unless array_arg
  end
end

#capture_variable_name ⇒ Object 



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# File 'lib/gir_ffi/builders/callback_argument_builder.rb', line 25

def capture_variable_name
  result_name if direction == :out
end

#method_argument_name ⇒ Object 



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# File 'lib/gir_ffi/builders/callback_argument_builder.rb', line 11

def method_argument_name
  @method_argument_name ||= name || new_variable
end

#post_conversion ⇒ Object 



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# File 'lib/gir_ffi/builders/callback_argument_builder.rb', line 43

def post_conversion
  case direction
  when :out
    [ outgoing_post_conversion ]
  when :error
    [
      "rescue => #{result_name}",
      outgoing_post_conversion,
      "end"
    ]
  else
    []
  end
end

#pre_conversion ⇒ Object 



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# File 'lib/gir_ffi/builders/callback_argument_builder.rb', line 29

def pre_conversion
  case direction
  when :in
    [ "#{pre_converted_name} = #{pre_convertor.conversion}" ]
  when :out
    [ "#{pre_converted_name} = #{out_parameter_preparation}" ]
  when :error
    [
      "#{pre_converted_name} = #{out_parameter_preparation}",
      "begin"
    ]
  end
end

#pre_converted_name ⇒ Object 



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# File 'lib/gir_ffi/builders/callback_argument_builder.rb', line 15

def pre_converted_name
  @pre_converted_name ||= new_variable
end