removing meta class (for now)
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@ -45,11 +45,7 @@ module Typed
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def on_ClassExpression expression
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name = expression.value
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clazz = Parfait::Space.object_space.get_class_by_name! name
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raise "No such class #{name}" unless clazz
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reg = use_reg :MetaClass , clazz
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add_load_constant( expression, clazz , reg )
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return reg
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raise "No meta class #{name}"
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end
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end
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@ -10,7 +10,6 @@ require_relative "parfait/list"
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require_relative "parfait/word"
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require_relative "parfait/binary_code"
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require_relative "parfait/typed_method"
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require_relative "parfait/meta_class"
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require_relative "parfait/dictionary"
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require_relative "parfait/type"
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require_relative "parfait/message"
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@ -1,58 +0,0 @@
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module Parfait
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# class that acts like a class, but is really the object
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# described in the ruby language book as the eigenclass, what you get with
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# class MyClass
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# class << self <--- this is called the eigenclass, or metaclass, and really is just
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# .... the class object but gives us the ability to use the
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# syntax as if it were a class
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# While the "real" metaclass is the type, we need to honor the constancy of the type
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# So the type needs to be copied and replaced anytime it is edited.
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# And then changed in the original object, and thus we need this level of indirection
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# Basically we implement the Behaviour protocol, by forwarding to the type
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class MetaClass < Object
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include Logging
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attribute :object
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def initialize(object)
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super()
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self.object = object
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end
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def name
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self.object.get_type.name
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end
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# first part of the protocol is read, just forward to self.object.type
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def methods
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self.object.get_type.methods
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end
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def method_names
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self.object.get_type.method_names
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end
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def get_instance_method fname
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self.object.get_type.get_instance_method fname
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end
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# the modifying part creates a new type
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# forwards the action and replaces the type
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def add_instance_method method
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type = self.object.get_type.dup
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ret = type.add_instance_method(method)
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self.object.set_type type
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ret
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end
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def remove_instance_method method_name
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type = self.object.get_type.dup
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ret = type.remove_instance_method(method_name)
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self.object.set_type type
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ret
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end
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end
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end
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@ -4,7 +4,6 @@ require_relative "test_dictionary"
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require_relative "test_named_list"
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require_relative "test_list"
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require_relative "test_message"
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require_relative "test_meta_class"
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require_relative "test_typed_method"
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require_relative "test_object"
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require_relative "test_space"
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@ -1,55 +0,0 @@
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require_relative "../helper"
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class TestMeta < MiniTest::Test
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def setup
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@space = Register.machine.boot.space
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@try = @space.create_class(:Try , :Object).meta
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end
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def foo_method for_class = :Try
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args = Parfait::Type.for_hash( @try , { bar: :Integer})
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::Parfait::TypedMethod.new @space.get_class_by_name(for_class).instance_type , :foo , args
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end
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def test_meta
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assert @try.name
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end
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def test_meta_object
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assert @space.get_class_by_name(:Object).meta
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end
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def test_no_methods
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assert_equal 0 , @try.method_names.get_length
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end
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def test_meta_methods
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assert @try.methods
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end
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def test_add_method
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foo = foo_method
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assert_equal foo , @try.add_instance_method(foo)
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assert_equal 1 , @try.method_names.get_length
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assert_equal ":foo" , @try.method_names.inspect
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end
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def test_remove_method
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test_add_method
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assert_equal true , @try.remove_instance_method(:foo)
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end
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def test_remove_nothere
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assert_raises RuntimeError do
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@try.remove_instance_method(:foo)
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end
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end
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def test_method_get
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test_add_method
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assert_equal Parfait::TypedMethod , @try.get_instance_method(:foo).class
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end
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def test_method_get_nothere
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assert_nil @try.get_instance_method(:foo)
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test_remove_method
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assert_nil @try.get_instance_method(:foo)
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end
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end
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