class GirFFI::ClassBase
Base class for all generated classes and structs. Contains code for dealing with the generated nested Struct
classes.
Constants
- GIR_FFI_BUILDER
Attributes
Public Class Methods
Wrap the passed pointer in an instance of the current class. Will not do any casting to subtypes or additional processing.
# File lib/gir_ffi/class_base.rb, line 72 def self.direct_wrap(ptr) return nil if !ptr || ptr.null? obj = allocate obj.__send__ :assign_pointer, ptr obj end
Pass-through casting method. This may become a type checking method. It is overridden by GValue to implement wrapping of plain Ruby objects.
# File lib/gir_ffi/class_base.rb, line 83 def self.from(val) val end
# File lib/gir_ffi/class_base.rb, line 38 def self.setup_and_call(method, arguments, &block) method_name = try_in_ancestors(:setup_method, method.to_s) raise NoMethodError, "undefined method `#{method}' for #{self}" unless method_name send method_name, *arguments, &block end
# File lib/gir_ffi/class_base.rb, line 60 def self.to_callback_ffi_type :pointer end
# File lib/gir_ffi/class_base.rb, line 56 def self.to_ffi_type self::Struct end
# File lib/gir_ffi/class_base.rb, line 46 def self.try_in_ancestors(method, *arguments) ancestors.each do |klass| if klass.respond_to?(method) result = klass.send(method, *arguments) return result if result end end nil end
Wrap the passed pointer in an instance of the current class, or a descendant type if applicable.
# File lib/gir_ffi/class_base.rb, line 66 def self.wrap(ptr) direct_wrap ptr end
Public Instance Methods
NOTE: JRuby should fix FFI::MemoryPointer#== to return true for equivalent FFI::Pointer. For now, user to_ptr.address
# File lib/gir_ffi/class_base.rb, line 34 def ==(other) other.class == self.class && to_ptr.address == other.to_ptr.address end
# File lib/gir_ffi/class_base.rb, line 24 def setup_and_call(method, arguments, &block) method_name = self.class.try_in_ancestors(:setup_instance_method, method.to_s) raise NoMethodError, "undefined method `#{method}' for #{self}" unless method_name send method_name, *arguments, &block end
Private Instance Methods
# File lib/gir_ffi/class_base.rb, line 101 def assign_pointer(ptr) @struct = self.class::Struct.new(ptr) end
Stores a pointer created by a constructor function. Derived classes may perform additional processing. For example, InitiallyUnowned overrides it to sink the floating object.
This method assumes the pointer will always be of the type corresponding to the current class, and never of a subtype.
@param ptr Pointer to the object's C structure
# File lib/gir_ffi/class_base.rb, line 97 def store_pointer(ptr) assign_pointer ptr end