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86 lines (49 loc) · 5.51 KB
graph LR
    injector_Injector_get_binding["injector.Injector.get_binding"]
    injector_Injector_create_binding["injector.Injector.create_binding"]
    injector_Injector_provider_for["injector.Injector.provider_for"]
    injector_Injector__get_provider["injector.Injector._get_provider"]
    injector_Injector__get_instance["injector.Injector._get_instance"]
    injector_Injector__punch_through_alias["injector.Injector._punch_through_alias"]
    injector_Injector__is_specialization["injector.Injector._is_specialization"]
    injector_Injector_get_binding -- "calls" --> injector_Injector_create_binding
    injector_Injector_get_binding -- "utilizes" --> injector_Injector__is_specialization
    injector_Injector_create_binding -- "calls" --> injector_Injector_provider_for
    injector_Injector_provider_for -- "relies on" --> injector_Injector__punch_through_alias
    injector_Injector_provider_for -- "relies on" --> injector_Injector__is_specialization
    injector_Injector__get_provider -- "works in conjunction with" --> injector_Injector_provider_for
    injector_Injector__get_instance -- "calls" --> injector_Injector__get_provider
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Details

The injector subsystem, centered around the Injector class, is responsible for managing and providing dependencies within an application. Its core functionality revolves around a structured process of binding lookup, creation, and instance provision. The system efficiently resolves dependencies by first identifying appropriate bindings, then constructing providers based on these bindings, and finally instantiating or retrieving the required objects. This modular design ensures that components can declare their dependencies without needing to know how those dependencies are constructed, promoting loose coupling and testability.

injector.Injector.get_binding

Orchestrates the initial lookup and retrieval of a Binding for a requested dependency. It handles implicit bindings and ensures correct resolution for specialized types, acting as a primary entry point for binding discovery.

Related Classes/Methods:

injector.Injector.create_binding

Constructs the Binding object itself, determining the appropriate Provider based on the dependency's nature (e.g., a class, an instance, a factory function). This component is responsible for the actual configuration of how a dependency will be provided.

Related Classes/Methods:

injector.Injector.provider_for

Interprets a resolved Binding to determine and return the specific Provider instance that can fulfill the dependency. This involves understanding the binding's configuration and selecting the correct mechanism for instance creation.

Related Classes/Methods:

injector.Injector._get_provider

The internal mechanism responsible for locating and retrieving the concrete Provider instance for a given dependency request. This component handles the granular details of fetching the provider, potentially involving alias resolution and specialization handling.

Related Classes/Methods:

injector.Injector._get_instance

Responsible for obtaining the actual instance of a dependency by invoking the resolved Provider. This is the final step in the dependency resolution process, where the concrete object is created or retrieved from its scope.

Related Classes/Methods:

injector.Injector._punch_through_alias

Ensures that type aliases are correctly resolved to their underlying concrete types. This is crucial for accurate binding matching and provider determination, especially in complex type-hinted codebases.

Related Classes/Methods: None

injector.Injector._is_specialization

Identifies and correctly processes specialized generic types (e.g., List[str] vs. List[int]). This enables the injector to resolve bindings for complex type hints, ensuring type safety and correctness.

Related Classes/Methods: None