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, container_class) ⇒ FieldBuilder

Returns a new instance of FieldBuilder.



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# File 'lib/gir_ffi/builders/field_builder.rb', line 232

def initialize(field_info, container_class)
  @info = field_info
  @container_class = container_class
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 230

def info
  @info
end

Instance Method Details

#build ⇒ Object 



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# File 'lib/gir_ffi/builders/field_builder.rb', line 237

def build
  setup_getter
  setup_setter
end

#container_defines_getter_method? ⇒ Boolean

Returns:



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# File 'lib/gir_ffi/builders/field_builder.rb', line 248

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 258

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 264

def setter_def
  builder = setter_builder

  field_ptr = builder.new_variable

  <<-CODE.reset_indentation
  def #{info.name}= #{builder.method_argument_name}
    #{field_ptr} = @struct.to_ptr + #{info.offset}
    #{builder.pre_conversion.join("\n          ")}
    #{value_storage(field_ptr, builder)}
  end
  CODE
end

#setup_getter ⇒ Object 



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# File 'lib/gir_ffi/builders/field_builder.rb', line 242

def setup_getter
  return if container_defines_getter_method?
  return if hidden_struct_type?
  container_class.class_eval getter_def
end

#setup_setter ⇒ Object 



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# File 'lib/gir_ffi/builders/field_builder.rb', line 252

def setup_setter
  return unless info.writable?
  return if hidden_struct_type?
  container_class.class_eval setter_def
end