class GirFFI::Builders::UserDefinedBuilder
Implements the creation of GObject
subclasses from Ruby.
Public Class Methods
new(info)
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# File lib/gir_ffi/builders/user_defined_builder.rb, line 10 def initialize(info) @info = info end
Public Instance Methods
setup_class()
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# File lib/gir_ffi/builders/user_defined_builder.rb, line 14 def setup_class setup_layout register_type setup_constants setup_property_accessors setup_initializer TypeBuilder::CACHE[@gtype] = klass end
target_gtype()
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# File lib/gir_ffi/builders/user_defined_builder.rb, line 23 def target_gtype @gtype ||= klass.gtype end
Private Instance Methods
class_init_proc()
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# File lib/gir_ffi/builders/user_defined_builder.rb, line 73 def class_init_proc proc do |type_class_or_ptr, _data| object_class_ptr = type_class_or_ptr.to_ptr setup_properties object_class_ptr setup_vfuncs object_class_ptr end end
class_size()
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# File lib/gir_ffi/builders/user_defined_builder.rb, line 100 def class_size parent_gtype.class_size + interface_gtypes.map(&:class_size).inject(0, :+) end
field_alignment()
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# File lib/gir_ffi/builders/user_defined_builder.rb, line 174 def field_alignment @field_alignment ||= superclass::Struct.alignment end
gobject_interface_info(interface)
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# File lib/gir_ffi/builders/user_defined_builder.rb, line 67 def gobject_interface_info(interface) GObject::InterfaceInfo.new.tap do |interface_info| interface_info.interface_init = interface_init_proc(interface) end end
gobject_type_info()
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# File lib/gir_ffi/builders/user_defined_builder.rb, line 59 def gobject_type_info GObject::TypeInfo.new.tap do |type_info| type_info.class_size = class_size type_info.instance_size = instance_size type_info.class_init = class_init_proc end end
included_interfaces()
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# File lib/gir_ffi/builders/user_defined_builder.rb, line 51 def included_interfaces klass.included_interfaces end
install_vfunc(container_struct, vfunc_name, vfunc_info, implementation)
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# File lib/gir_ffi/builders/user_defined_builder.rb, line 155 def install_vfunc(container_struct, vfunc_name, vfunc_info, implementation) vfunc = VFuncBuilder.new(vfunc_info).build_class container_struct[vfunc_name] = vfunc.from implementation end
instance_size()
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# File lib/gir_ffi/builders/user_defined_builder.rb, line 88 def instance_size if property_fields.any? last_property = property_fields.last size = last_property.offset type_size = FFI.type_size(last_property.ffi_type) size += [type_size, field_alignment].max else size = parent_gtype.instance_size end size end
interface_gtypes()
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# File lib/gir_ffi/builders/user_defined_builder.rb, line 47 def interface_gtypes included_interfaces.map { |interface| GType.new(interface.gtype) } end
interface_init_proc(interface)
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# File lib/gir_ffi/builders/user_defined_builder.rb, line 81 def interface_init_proc(interface) proc do |interface_or_ptr, _data| interface_ptr = interface_or_ptr.to_ptr setup_interface_vfuncs interface, interface_ptr end end
klass()
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# File lib/gir_ffi/builders/user_defined_builder.rb, line 55 def klass @klass ||= @info.described_class end
layout_specification()
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# File lib/gir_ffi/builders/user_defined_builder.rb, line 164 def layout_specification parent_spec = [:parent, superclass::Struct] fields_spec = property_fields.flat_map do |property_info| [property_info.field_symbol, property_info.ffi_type, property_info.offset] end parent_spec + fields_spec end
method_introspection_data(_method)
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# File lib/gir_ffi/builders/user_defined_builder.rb, line 197 def method_introspection_data(_method) nil end
parent_gtype()
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# File lib/gir_ffi/builders/user_defined_builder.rb, line 43 def parent_gtype @info.parent_gtype end
parent_info()
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# File lib/gir_ffi/builders/user_defined_builder.rb, line 39 def parent_info @info.parent end
properties()
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# File lib/gir_ffi/builders/user_defined_builder.rb, line 160 def properties @properties ||= info.properties end
property_fields()
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# File lib/gir_ffi/builders/user_defined_builder.rb, line 184 def property_fields @property_fields ||= begin offset = parent_gtype.instance_size properties.map do |param_spec| field_info = UserDefinedPropertyInfo.new(param_spec, info, offset) type_size = FFI.type_size(field_info.ffi_type) offset += [type_size, field_alignment].max field_info end end end
property_getter()
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# File lib/gir_ffi/builders/user_defined_builder.rb, line 115 def property_getter proc do |object, _property_id, value, pspec| value.set_value object.send(pspec.accessor_name) end end
property_setter()
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# File lib/gir_ffi/builders/user_defined_builder.rb, line 121 def property_setter proc do |object, _property_id, value, pspec| object.send("#{pspec.accessor_name}=", value.get_value) end end
register_type()
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# File lib/gir_ffi/builders/user_defined_builder.rb, line 29 def register_type @gtype = GObject.type_register_static(parent_gtype.to_i, info.g_name, gobject_type_info, 0) included_interfaces.each do |interface| ifinfo = gobject_interface_info interface GObject.type_add_interface_static @gtype, interface.gtype, ifinfo end end
setup_interface_vfuncs(interface, interface_ptr)
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# File lib/gir_ffi/builders/user_defined_builder.rb, line 136 def setup_interface_vfuncs(interface, interface_ptr) interface_builder = interface.gir_ffi_builder interface_struct = interface_builder.interface_struct::Struct.new(interface_ptr) interface_info = interface_builder.info info.vfunc_implementations.each do |impl| setup_vfunc interface_info, interface_struct, impl end end
setup_properties(object_class_ptr)
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# File lib/gir_ffi/builders/user_defined_builder.rb, line 104 def setup_properties(object_class_ptr) object_class = GObject::ObjectClass.wrap object_class_ptr object_class.get_property = property_getter object_class.set_property = property_setter property_fields.each_with_index do |property, index| object_class.install_property index + 1, property.param_spec end end
setup_property_accessors()
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# File lib/gir_ffi/builders/user_defined_builder.rb, line 178 def setup_property_accessors property_fields.each do |field_info| FieldBuilder.new(field_info, klass).build end end
setup_vfunc(ancestor_info, ancestor_struct, impl)
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# File lib/gir_ffi/builders/user_defined_builder.rb, line 147 def setup_vfunc(ancestor_info, ancestor_struct, impl) vfunc_name = impl.name vfunc_info = ancestor_info.find_vfunc vfunc_name.to_s return unless vfunc_info install_vfunc ancestor_struct, vfunc_name, vfunc_info, impl.implementation end
setup_vfuncs(object_class_ptr)
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# File lib/gir_ffi/builders/user_defined_builder.rb, line 127 def setup_vfuncs(object_class_ptr) super_class_struct = superclass.gir_ffi_builder.object_class_struct::Struct.new(object_class_ptr) info.vfunc_implementations.each do |impl| setup_vfunc parent_info, super_class_struct, impl end end