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/*
* Copyright 2014 Google Inc. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef FRUIT_NORMALIZED_BINDINGS_H
#define FRUIT_NORMALIZED_BINDINGS_H
#include <fruit/impl/component_storage/component_storage_entry.h>
#include <memory>
namespace fruit {
namespace impl {
/** A single normalized binding (not a multibinding). */
struct NormalizedBinding {
union {
// Valid iff this is a terminal node (in the SemistaticGraph that contains this NormalizedBinding object).
ComponentStorageEntry::BindingForConstructedObject::object_ptr_t object;
// Valid iff this is not a terminal node (in the SemistaticGraph that contains this NormalizedBinding object).
ComponentStorageEntry::BindingForObjectToConstruct::create_t create;
};
#if FRUIT_EXTRA_DEBUG
bool is_nonconst;
#endif
NormalizedBinding() = default;
// Converts a ComponentStorageEntry to a NormalizedBinding.
// This is only supported for entries with these kinds:
// * BINDING_FOR_CONSTRUCTED_OBJECT,
// * BINDING_FOR_OBJECT_TO_CONSTRUCT_THAT_NEEDS_ALLOCATION,
// * BINDING_FOR_OBJECT_TO_CONSTRUCT_THAT_NEEDS_NO_ALLOCATION,
explicit NormalizedBinding(ComponentStorageEntry entry);
};
/** A single normalized multibinding. */
struct NormalizedMultibinding {
bool is_constructed;
union {
// Valid iff is_constructed==true.
ComponentStorageEntry::MultibindingForConstructedObject::object_ptr_t object;
// Valid iff is_constructed==false.
ComponentStorageEntry::MultibindingForObjectToConstruct::create_t create;
};
};
/** This stores all multibindings for a given type_id. */
struct NormalizedMultibindingSet {
// Can be empty, but only if v is present and non-empty.
std::vector<NormalizedMultibinding> elems;
// TODO: Check this comment.
// Returns the std::vector<T*> of instances, or nullptr if none.
// Caches the result in the `v' member.
ComponentStorageEntry::MultibindingVectorCreator::get_multibindings_vector_t get_multibindings_vector;
// A (casted) pointer to the std::vector<T*> of objects, or nullptr if the vector hasn't been constructed yet.
// Can't be empty.
std::shared_ptr<char> v;
};
} // namespace impl
} // namespace fruit
#include <fruit/impl/normalized_component_storage/normalized_bindings.defn.h>
#endif // FRUIT_NORMALIZED_BINDINGS_H
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