Package io.micronaut.expressions.parser.ast.util

Class EvaluatedExpressionCompilationUtils

java.lang.Object

io.micronaut.expressions.parser.ast.util.EvaluatedExpressionCompilationUtils

@Internal
public final class EvaluatedExpressionCompilationUtils
extends Object

Unility methods for used when compiling evaluated expressions.

Since:

4.0.0

Author:

Sergey Gavrilov

Constructor Summary

Constructors

Constructor	Description
EvaluatedExpressionCompilationUtils()

Method Summary

Modifier and Type	Method	Description
static @NonNull ClassElement	getRequiredClassElement(org.objectweb.asm.Type type, VisitorContext visitorContext)	Provides ClassElement for passed type or throws exception if class element can not be provided.
static boolean	isAssignable(@NonNull ClassElement parameter, @NonNull ClassElement argument)	Checks whether the argument class element is assignable to the parameter class element.
static void	pushBoxPrimitiveIfNecessary(@NonNull org.objectweb.asm.Type type, @NonNull org.objectweb.asm.commons.GeneratorAdapter mv)	Pushed primitive boxing instruction if passed type is a wrapper.
static void	pushPrimitiveCastIfNecessary(@NonNull org.objectweb.asm.Type type, @NonNull org.objectweb.asm.Type targetType, @NonNull org.objectweb.asm.commons.GeneratorAdapter mv)	This method checks whether passed primitive type needs to be explicitly cast to target type.
static void	pushUnboxPrimitiveIfNecessary(@NonNull org.objectweb.asm.Type type, @NonNull org.objectweb.asm.commons.GeneratorAdapter mv)	Pushed unboxing instruction if passed type is a primitive wrapper.
static Optional<PrimitiveElement>	toPrimitiveElement(org.objectweb.asm.Type type)

Methods inherited from class java.lang.Object

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

Constructor Details

EvaluatedExpressionCompilationUtils

public EvaluatedExpressionCompilationUtils()

Method Details

isAssignable

public static boolean isAssignable(@NonNull
 @NonNull ClassElement parameter,
 @NonNull
 @NonNull ClassElement argument)

Checks whether the argument class element is assignable to the parameter class element. This method also accepts primitive and wrapper elements and determines whether argument can be assigned to parameter after boxing or unboxing. In case when parameter or argument is an array, array dimensions are also checked.

Parameters:

parameter - checked parameter

argument - checked argument

Returns:

whether argument is assignable to parameter

getRequiredClassElement

@NonNull
public static @NonNull ClassElement getRequiredClassElement(org.objectweb.asm.Type type,
 VisitorContext visitorContext)

Provides ClassElement for passed type or throws exception if class element can not be provided.

Parameters:

type - Type element for which ClassElement needs to be obtained. This type can also represent a primitive type. In this case it will be boxed

visitorContext - visitor context

Returns:

resolved class element

Throws:

ExpressionCompilationException - if class element can not be obtained

pushUnboxPrimitiveIfNecessary

public static void pushUnboxPrimitiveIfNecessary(@NonNull
 @NonNull org.objectweb.asm.Type type,
 @NonNull
 @NonNull org.objectweb.asm.commons.GeneratorAdapter mv)

Pushed unboxing instruction if passed type is a primitive wrapper.

Parameters:

type - type to unbox

mv - method visitor

pushBoxPrimitiveIfNecessary

public static void pushBoxPrimitiveIfNecessary(@NonNull
 @NonNull org.objectweb.asm.Type type,
 @NonNull
 @NonNull org.objectweb.asm.commons.GeneratorAdapter mv)

Pushed primitive boxing instruction if passed type is a wrapper.

Parameters:

type - type to box

mv - method visitor

toPrimitiveElement

public static Optional<PrimitiveElement> toPrimitiveElement(org.objectweb.asm.Type type)

Parameters:

type - type to be converted to PrimitiveElement

Returns:

optional corresponding primitive element

pushPrimitiveCastIfNecessary

public static void pushPrimitiveCastIfNecessary(@NonNull
 @NonNull org.objectweb.asm.Type type,
 @NonNull
 @NonNull org.objectweb.asm.Type targetType,
 @NonNull
 @NonNull org.objectweb.asm.commons.GeneratorAdapter mv)

This method checks whether passed primitive type needs to be explicitly cast to target type. If it is, respective cast instruction is pushed.

Parameters:

type - type to cast

targetType - target type to which the cast is required

mv - method visitor