Class: GirFFI::Builders::FieldBuilder

Inherits:
Object
  • Object
show all
Defined in:
lib/gir_ffi/builders/field_builder.rb

Overview

Creates field getter and setter code for a given IFieldInfo.

Defined Under Namespace

Classes: GetterArgumentBuilder, GetterArgumentInfo, GetterBuilder

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(field_info) ⇒ FieldBuilder

Returns a new instance of FieldBuilder.



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# File 'lib/gir_ffi/builders/field_builder.rb', line 226

def initialize(field_info)
  @info = field_info
end

Instance Attribute Details

#info ⇒ Object (readonly)

Returns the value of attribute info.



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# File 'lib/gir_ffi/builders/field_builder.rb', line 224

def info
  @info
end

Instance Method Details

#build ⇒ Object 



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# File 'lib/gir_ffi/builders/field_builder.rb', line 230

def build
  setup_getter
  setup_setter
end

#container_defines_getter_method? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/gir_ffi/builders/field_builder.rb', line 239

def container_defines_getter_method?
  container_info.find_instance_method info.name
end

#getter_def ⇒ Object 



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# File 'lib/gir_ffi/builders/field_builder.rb', line 247

def getter_def
  getter_builder = GetterBuilder.new(info)
  getter_builder.method_definition
end

#setter_def ⇒ Object

TODO: Use MethodTemplate



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# File 'lib/gir_ffi/builders/field_builder.rb', line 253

def setter_def
  builder = setter_builder

  field_ptr = builder.new_variable
  typed_ptr = builder.new_variable

  "  def \#{info.name}= \#{builder.method_argument_name}\n    \#{field_ptr} = @struct.to_ptr + \#{info.offset}\n    \#{typed_ptr} = GirFFI::InOutPointer.new(\#{field_type_tag}, \#{field_ptr})\n    \#{builder.pre_conversion.join(\"\\n          \")}\n    \#{typed_ptr}.set_value \#{builder.call_argument_name}\n  end\n  CODE\nend\n".reset_indentation

#setup_getter ⇒ Object 



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# File 'lib/gir_ffi/builders/field_builder.rb', line 235

def setup_getter
  container_class.class_eval getter_def unless container_defines_getter_method?
end

#setup_setter ⇒ Object 



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# File 'lib/gir_ffi/builders/field_builder.rb', line 243

def setup_setter
  container_class.class_eval setter_def if info.writable?
end