Method deprecated or moved
This method is deprecated or moved on the latest stable version.
The last existing version (v2_1_10) is shown here.
create(klass, types, members)
public
Construct a new class given a C:
-
class klass (CUnion, CStruct, or other that provide an
#entity_class)
-
types (DL:TYPE_INT, DL::TYPE_SIZE_T, etc., see the C types
constants)
-
corresponding members
DL::Importer#struct and DL::Importer#union wrap this
functionality in an easy-to-use manner.
Example:
require 'dl/struct'
require 'dl/cparser'
include DL::CParser
types, members = parse_struct_signature(['int i','char c'])
MyStruct = DL::CStructBuilder.create(CUnion, types, members)
obj = MyStruct.allocate
# File ext/dl/lib/dl/struct.rb, line 50
def create(klass, types, members)
new_class = Class.new(klass){
define_method(:initialize){|addr|
@entity = klass.entity_class.new(addr, types)
@entity.assign_names(members)
}
define_method(:to_ptr){ @entity }
define_method(:to_i){ @entity.to_i }
members.each{|name|
define_method(name){ @entity[name] }
define_method(name + "="){|val| @entity[name] = val }
}
}
size = klass.entity_class.size(types)
new_class.module_eval( def new_class.size() #{size} end def new_class.malloc() addr = DL.malloc(#{size}) new(addr) end, __FILE__, __LINE__+1)
return new_class
end
