io.micronaut.annotation.processing

Class GenericUtils

java.lang.Object

io.micronaut.annotation.processing.GenericUtils

@Internal
public class GenericUtils
extends java.lang.Object

Utility methods for dealing with generic type signatures.

Author:

Graeme Rocher

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	GenericUtils(javax.lang.model.util.Elements elementUtils, javax.lang.model.util.Types typeUtils, ModelUtils modelUtils)

Method Summary

Modifier and Type	Method and Description
java.util.Map<java.lang.String,javax.lang.model.type.TypeMirror>	alignNewGenericsInfo(java.util.List<? extends javax.lang.model.element.TypeParameterElement> typeParameters, java.util.List<? extends javax.lang.model.type.TypeMirror> typeArguments, java.util.Map<java.lang.String,javax.lang.model.type.TypeMirror> genericsInfo) Takes the bound generic information and re-aligns for the new type.
java.util.Map<java.lang.String,java.util.Map<java.lang.String,javax.lang.model.type.TypeMirror>>	alignNewGenericsInfo(javax.lang.model.element.TypeElement typeElement, java.util.List<? extends javax.lang.model.type.TypeMirror> typeArguments, java.util.Map<java.lang.String,javax.lang.model.type.TypeMirror> genericsInfo) Takes a type element and the bound generic information and re-aligns for the new type.
java.util.Map<java.lang.String,java.util.Map<java.lang.String,javax.lang.model.type.TypeMirror>>	buildGenericTypeArgumentElementInfo(javax.lang.model.element.Element element) Builds type argument information for the given type.
java.util.Map<java.lang.String,java.util.Map<java.lang.String,javax.lang.model.type.TypeMirror>>	buildGenericTypeArgumentElementInfo(javax.lang.model.element.Element element, javax.lang.model.type.DeclaredType declaredType) Builds type argument information for the given type.
protected java.util.Optional<javax.lang.model.type.TypeMirror>	getFirstTypeArgument(javax.lang.model.type.TypeMirror type) Return the first type argument for the given type mirror.
java.util.List<? extends javax.lang.model.type.TypeMirror>	interfaceGenericTypesFor(javax.lang.model.element.TypeElement element, java.lang.String interfaceName) Finds the generic types for the given interface for the given class element.
protected java.util.Map<java.lang.String,javax.lang.model.type.TypeMirror>	resolveBoundTypes(javax.lang.model.type.DeclaredType type) Resolve bound types for the given declared type.
protected javax.lang.model.type.TypeMirror	resolveTypeReference(javax.lang.model.type.TypeMirror mirror)
protected javax.lang.model.type.TypeMirror	resolveTypeReference(javax.lang.model.type.TypeMirror mirror, java.util.Map<java.lang.String,javax.lang.model.type.TypeMirror> boundTypes) Resolve a type reference to use for the given type mirror taking into account generic type variables.

Methods inherited from class java.lang.Object

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

Constructor Detail

GenericUtils

protected GenericUtils(javax.lang.model.util.Elements elementUtils,
                       javax.lang.model.util.Types typeUtils,
                       ModelUtils modelUtils)

Parameters:

elementUtils - The Elements

typeUtils - The Types

modelUtils - The ModelUtils

Method Detail

buildGenericTypeArgumentElementInfo

public java.util.Map<java.lang.String,java.util.Map<java.lang.String,javax.lang.model.type.TypeMirror>> buildGenericTypeArgumentElementInfo(@NonNull
                                                                                                                                            javax.lang.model.element.Element element)

Builds type argument information for the given type.

Parameters:

element - The element

Returns:

The type argument information

buildGenericTypeArgumentElementInfo

public java.util.Map<java.lang.String,java.util.Map<java.lang.String,javax.lang.model.type.TypeMirror>> buildGenericTypeArgumentElementInfo(@NonNull
                                                                                                                                            javax.lang.model.element.Element element,
                                                                                                                                            @Nullable
                                                                                                                                            javax.lang.model.type.DeclaredType declaredType)

Builds type argument information for the given type.

Parameters:

element - The element

declaredType - The declared type

Returns:

The type argument information

interfaceGenericTypesFor

public java.util.List<? extends javax.lang.model.type.TypeMirror> interfaceGenericTypesFor(javax.lang.model.element.TypeElement element,
                                                                                           java.lang.String interfaceName)

Finds the generic types for the given interface for the given class element.

Parameters:

element - The class element

interfaceName - The interface

Returns:

The generic types or an empty list

getFirstTypeArgument

protected java.util.Optional<javax.lang.model.type.TypeMirror> getFirstTypeArgument(javax.lang.model.type.TypeMirror type)

Return the first type argument for the given type mirror. For example for Optional<String> this will return String.

Parameters:

type - The type

Returns:

The first argument.

resolveTypeReference

protected javax.lang.model.type.TypeMirror resolveTypeReference(javax.lang.model.type.TypeMirror mirror)

Parameters:

mirror - The TypeMirror

Returns:

The resolved type reference

resolveTypeReference

protected javax.lang.model.type.TypeMirror resolveTypeReference(javax.lang.model.type.TypeMirror mirror,
                                                                java.util.Map<java.lang.String,javax.lang.model.type.TypeMirror> boundTypes)

Resolve a type reference to use for the given type mirror taking into account generic type variables.

Parameters:

mirror - The mirror

boundTypes - The already bound types for any type variable

Returns:

A type reference

resolveBoundTypes

protected java.util.Map<java.lang.String,javax.lang.model.type.TypeMirror> resolveBoundTypes(javax.lang.model.type.DeclaredType type)

Resolve bound types for the given declared type.

Parameters:

type - The declaring type

Returns:

The type bounds

alignNewGenericsInfo

public java.util.Map<java.lang.String,java.util.Map<java.lang.String,javax.lang.model.type.TypeMirror>> alignNewGenericsInfo(javax.lang.model.element.TypeElement typeElement,
                                                                                                                             java.util.List<? extends javax.lang.model.type.TypeMirror> typeArguments,
                                                                                                                             java.util.Map<java.lang.String,javax.lang.model.type.TypeMirror> genericsInfo)

Takes a type element and the bound generic information and re-aligns for the new type.

Parameters:

typeElement - The type element

typeArguments - The type arguments

genericsInfo - The generic info

Returns:

The aligned generics

alignNewGenericsInfo

public java.util.Map<java.lang.String,javax.lang.model.type.TypeMirror> alignNewGenericsInfo(java.util.List<? extends javax.lang.model.element.TypeParameterElement> typeParameters,
                                                                                             java.util.List<? extends javax.lang.model.type.TypeMirror> typeArguments,
                                                                                             java.util.Map<java.lang.String,javax.lang.model.type.TypeMirror> genericsInfo)

Takes the bound generic information and re-aligns for the new type.

Parameters:

typeParameters - The type parameters

typeArguments - The type arguments

genericsInfo - The generic info

Returns:

The aligned generics