org.aspectj.org.eclipse.jdt.internal.compiler.env

Interface ITypeAnnotationWalker

All Known Subinterfaces:

ExternalAnnotationProvider.IMethodAnnotationWalker

All Known Implementing Classes:

ExternalAnnotationProvider.TypeParametersAnnotationWalker, NonNullDefaultAwareTypeAnnotationWalker, TypeAnnotationWalker

public interface ITypeAnnotationWalker

A TypeAnnotationWalker is initialized with all type annotations found at a given element. It can be used to walk into the types at the given element and finally answer the actual annotations at any node of the walk. The walker is implemented as immutable objects. During the walk either new instances are created, or the current instance is shared if no difference is encountered.

Field Summary

Fields

Modifier and Type	Field and Description
static ITypeAnnotationWalker	EMPTY_ANNOTATION_WALKER A no-effect annotation walker, all walking methods are implemented as identity-functions.
static IBinaryAnnotation[]	NO_ANNOTATIONS

Method Summary

Modifier and Type	Method and Description
IBinaryAnnotation[]	getAnnotationsAtCursor(int currentTypeId) Retrieve the type annotations at the current position reached by invocations of toXYZ() methods.
ITypeAnnotationWalker	toField() Walk to a field.
ITypeAnnotationWalker	toMethodParameter(short index) Walk to the index'th visible formal method parameter (i.e., not counting synthetic args).
ITypeAnnotationWalker	toMethodReturn() Walk to the return type of a method.
ITypeAnnotationWalker	toNextArrayDimension() Descend down one level of array dimensions.
ITypeAnnotationWalker	toNextNestedType() Descend down one level of type nesting.
ITypeAnnotationWalker	toReceiver() Walk to the receiver type of a method.
ITypeAnnotationWalker	toSupertype(short index, char[] superTypeSignature) Walk to the specified supertype either index based or name based:
ITypeAnnotationWalker	toThrows(int index) Walk to the throws type at the given index.
ITypeAnnotationWalker	toTypeArgument(int rank) Walk to the type argument of the given rank.
ITypeAnnotationWalker	toTypeBound(short boundIndex) Detail of toTypeParameterBounds(boolean, int): walk to the bounds of the previously selected type parameter.
ITypeAnnotationWalker	toTypeParameter(boolean isClassTypeParameter, int rank) Walk to the type parameter of the given rank.
ITypeAnnotationWalker	toTypeParameterBounds(boolean isClassTypeParameter, int parameterRank) Walk to the bounds of a type parameter of either a class or a method (signaled by isClassTypeParameter).
ITypeAnnotationWalker	toWildcardBound() Walk to the bound of a wildcard.

Field Detail

NO_ANNOTATIONS

static final IBinaryAnnotation[] NO_ANNOTATIONS

EMPTY_ANNOTATION_WALKER

static final ITypeAnnotationWalker EMPTY_ANNOTATION_WALKER

A no-effect annotation walker, all walking methods are implemented as identity-functions. At the end of any walk an empty array of annotations is returned.

Method Detail

toField

ITypeAnnotationWalker toField()

Walk to a field.

toMethodReturn

ITypeAnnotationWalker toMethodReturn()

Walk to the return type of a method.

toReceiver

ITypeAnnotationWalker toReceiver()

Walk to the receiver type of a method. Note: Type annotations on receiver are not currently used by the compiler.

toTypeParameter

ITypeAnnotationWalker toTypeParameter(boolean isClassTypeParameter,
                                      int rank)

Walk to the type parameter of the given rank.

Parameters:

isClassTypeParameter - whether we are looking for a class type parameter (else: method type parameter)

rank - rank of the type parameter

toTypeParameterBounds

ITypeAnnotationWalker toTypeParameterBounds(boolean isClassTypeParameter,
                                            int parameterRank)

Walk to the bounds of a type parameter of either a class or a method (signaled by isClassTypeParameter). Clients must then call toTypeBound(short) on the resulting walker.

Parameters:

isClassTypeParameter - whether we are looking at a class type parameter (else: method type parameter)

parameterRank - rank of the type parameter.

toTypeBound

ITypeAnnotationWalker toTypeBound(short boundIndex)

Detail of toTypeParameterBounds(boolean, int): walk to the bounds of the previously selected type parameter.

Parameters:

boundIndex -

toSupertype

ITypeAnnotationWalker toSupertype(short index,
                                  char[] superTypeSignature)

Walk to the specified supertype either index based or name based:

Parameters:

index - -1 is superclass, else index into the list of superinterfaces

superTypeSignature - name and type arguments of the super type to visit

toMethodParameter

ITypeAnnotationWalker toMethodParameter(short index)

Walk to the index'th visible formal method parameter (i.e., not counting synthetic args).

toThrows

ITypeAnnotationWalker toThrows(int index)

Walk to the throws type at the given index.

toTypeArgument

ITypeAnnotationWalker toTypeArgument(int rank)

Walk to the type argument of the given rank.

toWildcardBound

ITypeAnnotationWalker toWildcardBound()

Walk to the bound of a wildcard.

toNextArrayDimension

ITypeAnnotationWalker toNextArrayDimension()

Descend down one level of array dimensions.

toNextNestedType

ITypeAnnotationWalker toNextNestedType()

Descend down one level of type nesting.

getAnnotationsAtCursor

IBinaryAnnotation[] getAnnotationsAtCursor(int currentTypeId)

Retrieve the type annotations at the current position reached by invocations of toXYZ() methods.

Parameters:

currentTypeId - the id of the type being annotated; 0 signals don't care / unknown; -1 signals if annotating a wildcard or a use of a type variable.