ComponentRegistry (kink API)

java.lang.Object
- org.kink_lang.kink.ComponentRegistry

```
public class ComponentRegistry
extends Object
```
The component registry of the VM.
Components are any objects which are registered to the VM. A component is registered with its class. For a class, only one component can be registered. The second or later attempts of registration do not succeed.

See Also:

Vm.component

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`<T> T`	`get(Class<T> klass)`	Returns a component registered with the class.
`<T> T`	`getOrRegister(Class<T> klass, Function<Vm,T> makeComponent)`	Returns a component registered with the class; if it is not registered yet, makes one via `makeComponent`, then registers and returns it.
`<T> void`	`register(Class<T> klass, T component)`	Registers the component with the class, only if no component is registered with the class.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Method Detail
  - get
```
public <T> T get(Class<T> klass)
```
    Returns a component registered with the class.
    
    Type Parameters:
    
    T - the type of the class of the component.
    
    Parameters:
    
    klass - the class of the component.
    
    Returns:
    
    the component.
    
    Throws:
    
    IllegalStateException - if it is not registered yet.
  - register
```
public <T> void register(Class<T> klass,
                         T component)
```
    Registers the component with the class, only if no component is registered with the class.
    
    Type Parameters:
    
    T - the type of the class of the component.
    
    Parameters:
    
    klass - the class of the component.
    
    component - the component.
  - getOrRegister
```
public <T> T getOrRegister(Class<T> klass,
                           Function<Vm,T> makeComponent)
```
    Returns a component registered with the class; if it is not registered yet, makes one via makeComponent, then registers and returns it.
    Example:
    
    class X { X(Vm vm) {} } X x = vm.component.getOrRegister(X.class, X::new);
    Type Parameters:
    
    T - the type of the class of the component.
    
    Parameters:
    
    klass - the class of the component.
    
    makeComponent - a function to make a component.
    
    Returns:
    
    the component.