Package io.micronaut.test.typepollution

Class HookBootstrap

java.lang.Object

io.micronaut.test.typepollution.HookBootstrap

@Internal
public final class HookBootstrap
extends Object

Method handle bootstrap used by generated code to call into the ConcreteCounter. Must be public for generated code, but should never be used directly.

Method Summary

Modifier and Type	Method	Description
static CallSite	dynamicTypeCheck(MethodHandles.Lookup lookup, String name, MethodType type)	Called on successful type check in scenarios where the interface type is not statically known, i.e.
static CallSite	dynamicTypeCheckCast(MethodHandles.Lookup lookup, String name, MethodType type)	Called on successful type check for Class.cast(Object).
static CallSite	staticTypeCheck(MethodHandles.Lookup lookup, String name, MethodType type, Class<?> interfaceType)	Called on successful type check in scenarios where the interface type is statically known, i.e.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

staticTypeCheck

public static CallSite staticTypeCheck(MethodHandles.Lookup lookup,
 String name,
 MethodType type,
 Class<?> interfaceType)
                                throws NoSuchMethodException,
IllegalAccessException

Called on successful type check in scenarios where the interface type is statically known, i.e. checkcast and instanceof instructions. Returned method type is (Ljava/lang/Object;)V, where the sole parameter is the object that was type checked.

Parameters:

lookup - Required bootstrap method parameter

name - Required bootstrap method parameter

type - Required bootstrap method parameter

interfaceType - The statically known interface type

Returns:

(Ljava/lang/Object;)V

Throws:

NoSuchMethodException

IllegalAccessException

dynamicTypeCheck

public static CallSite dynamicTypeCheck(MethodHandles.Lookup lookup,
 String name,
 MethodType type)
                                 throws NoSuchMethodException,
IllegalAccessException

Called on successful type check in scenarios where the interface type is not statically known, i.e. Class.isAssignableFrom(Class) and Class.isInstance(Object) calls. Returned method type is (Ljava/lang/Class;Ljava/lang/Class;)V, where the first parameter is the interface type and the second parameter is the concrete type.

Parameters:

lookup - Required bootstrap method parameter

name - Required bootstrap method parameter

type - Required bootstrap method parameter

Returns:

(Ljava/lang/Class;Ljava/lang/Class;)V

Throws:

NoSuchMethodException

IllegalAccessException

dynamicTypeCheckCast

public static CallSite dynamicTypeCheckCast(MethodHandles.Lookup lookup,
 String name,
 MethodType type)
                                     throws NoSuchMethodException,
IllegalAccessException

Called on successful type check for Class.cast(Object). This is a slightly modified dynamicTypeCheck(java.lang.invoke.MethodHandles.Lookup, java.lang.String, java.lang.invoke.MethodType) to make the cast implementation work without local variables. Returned method type is (Ljava/lang/Class;Ljava/lang/Object;)Ljava/lang/Object;, where the first parameter is the interface type and the second parameter is the concrete value that was cast. The return value is the second parameter.

Parameters:

lookup - Required bootstrap method parameter

name - Required bootstrap method parameter

type - Required bootstrap method parameter

Returns:

(Ljava/lang/Class;Ljava/lang/Object;)Ljava/lang/Object;

Throws:

NoSuchMethodException

IllegalAccessException