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	reflectionConstructorCall(MethodHandles.Lookup lookup, String name, MethodType type)	Called before any call to Constructor.newInstance(Object...).
static CallSite	reflectionFieldSet(MethodHandles.Lookup lookup, String name, MethodType type)	Called before any call to Field.set(Object, Object).
static CallSite	reflectionMethodCall(MethodHandles.Lookup lookup, String name, MethodType type)	Called before any call to Method.invoke(Object, 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

reflectionMethodCall

public static CallSite reflectionMethodCall(MethodHandles.Lookup lookup,
 String name,
 MethodType type)

Called before any call to Method.invoke(Object, Object...). Returned method type is (Ljava/lang/reflect/Method;Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/reflect/Method;, where the first parameter is the method, the second parameter the this argument, and the third parameter the argument array. The returned type is the same method passed in.

Parameters:

lookup - Required bootstrap method parameter

name - Required bootstrap method parameter

type - Required bootstrap method parameter

Returns:

(Ljava/lang/reflect/Method;Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/reflect/Method;

reflectionConstructorCall

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

Called before any call to Constructor.newInstance(Object...). Returned method type is (Ljava/lang/reflect/Constructor;[Ljava/lang/Object;)V, where the first parameter is the constructor and the second parameter the argument array.

Parameters:

lookup - Required bootstrap method parameter

name - Required bootstrap method parameter

type - Required bootstrap method parameter

Returns:

(Ljava/lang/reflect/Constructor;[Ljava/lang/Object;)V

Throws:

NoSuchMethodException

IllegalAccessException

reflectionFieldSet

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

Called before any call to Field.set(Object, Object). Returned method type is (Ljava/lang/reflect/Field;Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/reflect/Field;, where the first parameter is the field, the second the object that the field is set on, and the third parameter the field value. The return value is the same field that was passed in.

Parameters:

lookup - Required bootstrap method parameter

name - Required bootstrap method parameter

type - Required bootstrap method parameter

Returns:

(Ljava/lang/reflect/Field;Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/reflect/Field;

Throws:

NoSuchMethodException

IllegalAccessException