Dependency Injection

Basic dependency injection framework. More...

Concepts
concept	ghassanpl::di::has_default_lifetime
	If the interface or implementation has a DefaultLifetime static member field, that specified lifetime will be used by default for that interface/implementation.

Classes
struct	ghassanpl::di::Container
	The container for implementations; used to request interfaces. More...

Enumerations
enum class	ghassanpl::di::Lifetime {   ghassanpl::di::Lifetime::Default , ghassanpl::di::Lifetime::Transient , ghassanpl::di::Lifetime::InstanceSingleton , ghassanpl::di::Lifetime::WeakSingleton ,   ghassanpl::di::Lifetime::ThreadSingleton }
	Specifies the lifetime of an implementation. More...

Variables
constexpr DefaultImplementationStruct	ghassanpl::di::DefaultImplementation
	Used to specify an implementation is the default one for the interface being registered.

Detailed Description

Basic dependency injection framework.

A tiny and as-simple-as-possible Dependency Injection/IoC library, based around shared_ptrs.

Works, but might contain bugs. Still, you should be able to register types, instances, factory functions, and the construction arguments should resolve automatically, so, a basic DI container.

Supports custom instance lifetimes (strong and weak singletons, per-thread singleton, multiple-instances), naming interfaces/instances, instance creation callbacks, and probably other stuff.

Todo

example usage

Enumeration Type Documentation

Lifetime

enum class ghassanpl::di::Lifetime

strong

Specifies the lifetime of an implementation.

Enumerator
Default	Does not specify which lifetime of the implementation you want; you will be given one that's available, of unspecified lifetime.
Transient	Will always give you a freshly instantiated implementation object when requesting the interface.
InstanceSingleton	If a singleton instance of the implementation has not yet been created, it will be created and returned; otherwise, the existing instance will be returned.
WeakSingleton	Same as InstanceSingleton, but will not hold on to an instance, so when your last shared_ptr to it will be destroyed, so will the instance.
ThreadSingleton	Same as InstanceSingleton, but each thread gets its own instance.

Definition at line 36 of file di.h.

Variable Documentation

DefaultImplementation

DefaultImplementationStruct ghassanpl::di::DefaultImplementation

inlineconstexpr

Used to specify an implementation is the default one for the interface being registered.

Definition at line 48 of file di.h.