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AspectJ tools most notably contains the AspectJ compiler (AJC). AJC applies aspects to Java classes during
compilation, fully replacing Javac for plain Java classes and also compiling native AspectJ or annotation-based
@AspectJ syntax. Furthermore, AJC can weave aspects into existing class files in a post-compile binary weaving step.
This library is a superset of AspectJ weaver and hence also of AspectJ runtime.
/*******************************************************************************
* Copyright (c) 2000, 2021 IBM Corporation and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* IBM Corporation - initial API and implementation
* Stephan Herrmann - Contributions for
* bug 186342 - [compiler][null] Using annotations for null checking
* bug 365662 - [compiler][null] warn on contradictory and redundant null annotations
* bug 331649 - [compiler][null] consider null annotations for fields
* Bug 392099 - [1.8][compiler][null] Apply null annotation on types for null analysis
* Bug 415043 - [1.8][null] Follow-up re null type annotations after bug 392099
* Bug 392238 - [1.8][compiler][null] Detect semantically invalid null type annotations
* Bug 415850 - [1.8] Ensure RunJDTCoreTests can cope with null annotations enabled
* Bug 417295 - [1.8[[null] Massage type annotated null analysis to gel well with deep encoded type bindings.
* Bug 424728 - [1.8][null] Unexpected error: The nullness annotation 'XXXX' is not applicable at this location
* Bug 392245 - [1.8][compiler][null] Define whether / how @NonNullByDefault applies to TYPE_USE locations
* Bug 429958 - [1.8][null] evaluate new DefaultLocation attribute of @NonNullByDefault
* Bug 435805 - [1.8][compiler][null] Java 8 compiler does not recognize declaration style null annotations
* Bug 457210 - [1.8][compiler][null] Wrong Nullness errors given on full build build but not on incremental build?
* Bug 469584 - ClassCastException in Annotation.detectStandardAnnotation (320)
* Andy Clement (GoPivotal, Inc) [email protected] - Contributions for
* Bug 383624 - [1.8][compiler] Revive code generation support for type annotations (from Olivier's work)
* Bug 409517 - [1.8][compiler] Type annotation problems on more elaborate array references
* Bug 415397 - [1.8][compiler] Type Annotations on wildcard type argument dropped
* Bug 414384 - [1.8] type annotation on abbreviated inner class is not marked as inner type
* Jesper S Moller - Contributions for
* Bug 412153 - [1.8][compiler] Check validity of annotations which may be repeatable
* Bug 412151 - [1.8][compiler] Check repeating annotation's collection type
* Bug 412149 - [1.8][compiler] Emit repeated annotations into the designated container
* Bug 419209 - [1.8] Repeating container annotations should be rejected in the presence of annotation it contains
*******************************************************************************/
package org.aspectj.org.eclipse.jdt.internal.compiler.ast;
import java.util.Stack;
import org.aspectj.org.eclipse.jdt.core.compiler.CharOperation;
import org.aspectj.org.eclipse.jdt.internal.compiler.ASTVisitor;
import org.aspectj.org.eclipse.jdt.internal.compiler.classfmt.ClassFileConstants;
import org.aspectj.org.eclipse.jdt.internal.compiler.env.EnumConstantSignature;
import org.aspectj.org.eclipse.jdt.internal.compiler.impl.BooleanConstant;
import org.aspectj.org.eclipse.jdt.internal.compiler.impl.CompilerOptions;
import org.aspectj.org.eclipse.jdt.internal.compiler.impl.Constant;
import org.aspectj.org.eclipse.jdt.internal.compiler.impl.IrritantSet;
import org.aspectj.org.eclipse.jdt.internal.compiler.lookup.*;
/**
* Annotation
*/
@SuppressWarnings({"rawtypes", "unchecked"})
public abstract class Annotation extends Expression {
Annotation persistibleAnnotation = this; // Emit this into class file, unless this is a repeating annotation, in which case package this into the designated container.
/**
* Return the location for the corresponding annotation inside the type reference, null if none.
*/
public static int[] getLocations(
final Expression reference,
final Annotation annotation) {
class LocationCollector extends ASTVisitor {
Stack typePathEntries;
Annotation searchedAnnotation;
boolean continueSearch = true;
public LocationCollector(Annotation currentAnnotation) {
this.typePathEntries = new Stack();
this.searchedAnnotation = currentAnnotation;
}
private int[] computeNestingDepth(TypeReference typeReference) {
TypeBinding type = typeReference.resolvedType == null ? null : typeReference.resolvedType.leafComponentType();
int[] nestingDepths = new int[typeReference.getAnnotatableLevels()];
if (type != null && type.isNestedType()) {
int depth = 0;
TypeBinding currentType = type;
while (currentType != null) {
depth += (currentType.isStatic()) ? 0 : 1;
currentType = currentType.enclosingType();
}
// Work backwards computing whether a INNER_TYPE entry is required for each level
int counter = nestingDepths.length - 1;
while (type != null && counter >= 0) {
nestingDepths[counter--] = depth;
depth -= type.isStatic() ? 0 : 1;
type = type.enclosingType();
}
}
return nestingDepths;
}
private void inspectAnnotations(Annotation [] annotations) {
for (int i = 0, length = annotations == null ? 0 : annotations.length; this.continueSearch && i < length; i++) {
if (annotations[i] == this.searchedAnnotation) {
this.continueSearch = false;
break;
}
}
}
private void inspectArrayDimensions(Annotation [][] annotationsOnDimensions, int dimensions) {
for (int i = 0; this.continueSearch && i < dimensions; i++) {
Annotation[] annotations = annotationsOnDimensions == null ? null : annotationsOnDimensions[i];
inspectAnnotations(annotations);
if (!this.continueSearch) return;
this.typePathEntries.push(TYPE_PATH_ELEMENT_ARRAY);
}
}
private void inspectTypeArguments(TypeReference[] typeReferences) {
for (int i = 0, length = typeReferences == null ? 0 : typeReferences.length; this.continueSearch && i < length; i++) {
int size = this.typePathEntries.size();
this.typePathEntries.add(new int[]{3,i});
typeReferences[i].traverse(this, (BlockScope) null);
if (!this.continueSearch) return;
this.typePathEntries.setSize(size);
}
}
public boolean visit(TypeReference typeReference, BlockScope scope) {
if (this.continueSearch) {
inspectArrayDimensions(typeReference.getAnnotationsOnDimensions(), typeReference.dimensions());
if (this.continueSearch) {
int[] nestingDepths = computeNestingDepth(typeReference);
Annotation[][] annotations = typeReference.annotations;
TypeReference [][] typeArguments = typeReference.getTypeArguments();
int levels = typeReference.getAnnotatableLevels();
int size = this.typePathEntries.size();
for (int i = levels - 1; this.continueSearch && i >= 0; i--) { // traverse outwards, see comment below about type annotations from SE7 locations.
this.typePathEntries.setSize(size);
for (int j = 0, depth = nestingDepths[i]; j < depth; j++)
this.typePathEntries.add(TYPE_PATH_INNER_TYPE);
if (annotations != null)
inspectAnnotations(annotations[i]);
if (this.continueSearch && typeArguments != null) {
inspectTypeArguments(typeArguments[i]);
}
}
}
}
return false; // if annotation is not found in the type reference, it must be one from SE7 location, typePathEntries captures the proper path entries for them.
}
@Override
public boolean visit(SingleTypeReference typeReference, BlockScope scope) {
return visit((TypeReference) typeReference, scope);
}
@Override
public boolean visit(ArrayTypeReference typeReference, BlockScope scope) {
return visit((TypeReference) typeReference, scope);
}
@Override
public boolean visit(ParameterizedSingleTypeReference typeReference, BlockScope scope) {
return visit((TypeReference) typeReference, scope);
}
@Override
public boolean visit(QualifiedTypeReference typeReference, BlockScope scope) {
return visit((TypeReference) typeReference, scope);
}
@Override
public boolean visit(ArrayQualifiedTypeReference typeReference, BlockScope scope) {
return visit((TypeReference) typeReference, scope);
}
@Override
public boolean visit(ParameterizedQualifiedTypeReference typeReference, BlockScope scope) {
return visit((TypeReference) typeReference, scope);
}
@Override
public boolean visit(Wildcard typeReference, BlockScope scope) {
visit((TypeReference) typeReference, scope);
if (this.continueSearch) {
TypeReference bound = typeReference.bound;
if (bound != null) {
int size = this.typePathEntries.size();
this.typePathEntries.push(TYPE_PATH_ANNOTATION_ON_WILDCARD_BOUND);
bound.traverse(this, scope);
if (this.continueSearch)
this.typePathEntries.setSize(size);
}
}
return false;
}
@Override
public boolean visit(ArrayAllocationExpression allocationExpression, BlockScope scope) {
if (this.continueSearch) {
inspectArrayDimensions(allocationExpression.getAnnotationsOnDimensions(), allocationExpression.dimensions.length);
if (this.continueSearch) {
allocationExpression.type.traverse(this, scope);
}
if (this.continueSearch) throw new IllegalStateException();
}
return false;
}
@Override
public String toString() {
StringBuilder buffer = new StringBuilder();
buffer
.append("search location for ") //$NON-NLS-1$
.append(this.searchedAnnotation)
.append("\ncurrent type_path entries : "); //$NON-NLS-1$
for (int i = 0, maxi = this.typePathEntries.size(); i < maxi; i++) {
int[] typePathEntry = (int[]) this.typePathEntries.get(i);
buffer
.append('(')
.append(typePathEntry[0])
.append(',')
.append(typePathEntry[1])
.append(')');
}
return String.valueOf(buffer);
}
}
if (reference == null) return null;
LocationCollector collector = new LocationCollector(annotation);
reference.traverse(collector, (BlockScope) null);
if (collector.typePathEntries.isEmpty()) {
return null;
}
int size = collector.typePathEntries.size();
int[] result = new int[size*2];
int offset=0;
for (int i = 0; i < size; i++) {
int[] pathElement = (int[])collector.typePathEntries.get(i);
result[offset++] = pathElement[0];
result[offset++] = pathElement[1];
}
return result;
}
final static MemberValuePair[] NoValuePairs = new MemberValuePair[0];
static final int[] TYPE_PATH_ELEMENT_ARRAY = new int[]{0,0};
static final int[] TYPE_PATH_INNER_TYPE = new int[]{1,0};
static final int[] TYPE_PATH_ANNOTATION_ON_WILDCARD_BOUND = new int[]{2,0};
public int declarationSourceEnd;
public Binding recipient;
public TypeReference type;
/**
* The representation of this annotation in the type system.
*/
protected AnnotationBinding compilerAnnotation = null;
public static long getRetentionPolicy(char[] policyName) {
if (policyName == null || policyName.length == 0)
return 0;
switch(policyName[0]) {
case 'C' :
if (CharOperation.equals(policyName, TypeConstants.UPPER_CLASS))
return TagBits.AnnotationClassRetention;
break;
case 'S' :
if (CharOperation.equals(policyName, TypeConstants.UPPER_SOURCE))
return TagBits.AnnotationSourceRetention;
break;
case 'R' :
if (CharOperation.equals(policyName, TypeConstants.UPPER_RUNTIME))
return TagBits.AnnotationRuntimeRetention;
break;
}
return 0; // unknown
}
public static long getTargetElementType(char[] elementName) {
if (elementName == null || elementName.length == 0)
return 0;
switch(elementName[0]) {
case 'A' :
if (CharOperation.equals(elementName, TypeConstants.UPPER_ANNOTATION_TYPE))
return TagBits.AnnotationForAnnotationType;
break;
case 'C' :
if (CharOperation.equals(elementName, TypeConstants.UPPER_CONSTRUCTOR))
return TagBits.AnnotationForConstructor;
break;
case 'F' :
if (CharOperation.equals(elementName, TypeConstants.UPPER_FIELD))
return TagBits.AnnotationForField;
break;
case 'L' :
if (CharOperation.equals(elementName, TypeConstants.UPPER_LOCAL_VARIABLE))
return TagBits.AnnotationForLocalVariable;
break;
case 'M' :
if (CharOperation.equals(elementName, TypeConstants.UPPER_METHOD))
return TagBits.AnnotationForMethod;
else if (CharOperation.equals(elementName, TypeConstants.UPPER_MODULE))
return TagBits.AnnotationForModule;
break;
case 'P' :
if (CharOperation.equals(elementName, TypeConstants.UPPER_PARAMETER))
return TagBits.AnnotationForParameter;
else if (CharOperation.equals(elementName, TypeConstants.UPPER_PACKAGE))
return TagBits.AnnotationForPackage;
break;
case 'R' :
if (CharOperation.equals(elementName, TypeConstants.UPPER_RECORD_COMPONENT))
return TagBits.AnnotationForRecordComponent;
break;
case 'T' :
if (CharOperation.equals(elementName, TypeConstants.TYPE))
return TagBits.AnnotationForType;
if (CharOperation.equals(elementName, TypeConstants.TYPE_USE_TARGET))
return TagBits.AnnotationForTypeUse;
if (CharOperation.equals(elementName, TypeConstants.TYPE_PARAMETER_TARGET))
return TagBits.AnnotationForTypeParameter;
break;
}
return 0; // unknown
}
public ElementValuePair[] computeElementValuePairs() {
return Binding.NO_ELEMENT_VALUE_PAIRS;
}
/**
* Compute the bit pattern for recognized standard annotations the compiler may need to act upon.
* The lower bits (Binding.NullnessDefaultMASK) do not belong in tagBits, but in defaultNullness.
*/
private long detectStandardAnnotation(Scope scope, ReferenceBinding annotationType, MemberValuePair valueAttribute) {
long tagBits = 0;
switch (annotationType.id) {
// retention annotation
case TypeIds.T_JavaLangAnnotationRetention :
if (valueAttribute != null) {
Expression expr = valueAttribute.value;
if ((expr.bits & Binding.VARIABLE) == Binding.FIELD && expr instanceof Reference) { // anything but Reference would be a type error anyway
FieldBinding field = ((Reference)expr).fieldBinding();
if (field != null && field.declaringClass.id == T_JavaLangAnnotationRetentionPolicy) {
tagBits |= getRetentionPolicy(field.name);
}
}
}
break;
// target annotation
case TypeIds.T_JavaLangAnnotationTarget :
tagBits |= TagBits.AnnotationTarget; // target specified (could be empty)
if (valueAttribute != null) {
Expression expr = valueAttribute.value;
if (expr instanceof ArrayInitializer) {
ArrayInitializer initializer = (ArrayInitializer) expr;
final Expression[] expressions = initializer.expressions;
if (expressions != null) {
for (int i = 0, length = expressions.length; i < length; i++) {
Expression initExpr = expressions[i];
if ((initExpr.bits & Binding.VARIABLE) == Binding.FIELD) {
FieldBinding field = ((Reference) initExpr).fieldBinding();
if (field != null && field.declaringClass.id == T_JavaLangAnnotationElementType) {
long element = getTargetElementType(field.name);
if ((tagBits & element) != 0) {
scope.problemReporter().duplicateTargetInTargetAnnotation(annotationType, (NameReference)initExpr);
} else {
tagBits |= element;
}
}
}
}
}
} else if ((expr.bits & Binding.VARIABLE) == Binding.FIELD) {
FieldBinding field = ((Reference) expr).fieldBinding();
if (field != null && field.declaringClass.id == T_JavaLangAnnotationElementType) {
tagBits |= getTargetElementType(field.name);
}
}
}
break;
case TypeIds.T_JdkInternalPreviewFeature :
tagBits |= TagBits.AnnotationPreviewFeature;
for (MemberValuePair memberValuePair : memberValuePairs()) {
if (CharOperation.equals(memberValuePair.name, TypeConstants.ESSENTIAL_API)) {
if (memberValuePair.value instanceof TrueLiteral) {
tagBits |= TagBits.EssentialAPI;
}
}
}
break;
// marker annotations
case TypeIds.T_JavaLangDeprecated :
tagBits |= TagBits.AnnotationDeprecated;
if (scope.compilerOptions().complianceLevel >= ClassFileConstants.JDK9) {
for (MemberValuePair memberValuePair : memberValuePairs()) {
if (CharOperation.equals(memberValuePair.name, TypeConstants.FOR_REMOVAL)) {
if (memberValuePair.value instanceof TrueLiteral)
tagBits |= TagBits.AnnotationTerminallyDeprecated;
break;
}
}
}
break;
case TypeIds.T_JavaLangAnnotationDocumented :
tagBits |= TagBits.AnnotationDocumented;
break;
case TypeIds.T_JavaLangAnnotationInherited :
tagBits |= TagBits.AnnotationInherited;
break;
case TypeIds.T_JavaLangOverride :
tagBits |= TagBits.AnnotationOverride;
break;
case TypeIds.T_JavaLangFunctionalInterface :
tagBits |= TagBits.AnnotationFunctionalInterface;
break;
case TypeIds.T_JavaLangAnnotationRepeatable:
tagBits |= TagBits.AnnotationRepeatable;
break;
case TypeIds.T_JavaLangSuppressWarnings :
tagBits |= TagBits.AnnotationSuppressWarnings;
break;
case TypeIds.T_JavaLangSafeVarargs :
tagBits |= TagBits.AnnotationSafeVarargs;
break;
case TypeIds.T_JavaLangInvokeMethodHandlePolymorphicSignature :
tagBits |= TagBits.AnnotationPolymorphicSignature;
break;
}
CompilerOptions compilerOptions = scope.compilerOptions();
if (compilerOptions.isAnnotationBasedNullAnalysisEnabled) {
if (annotationType.hasNullBit(TypeIds.BitNullableAnnotation)) {
tagBits |= TagBits.AnnotationNullable;
} else if (annotationType.hasNullBit(TypeIds.BitNonNullAnnotation)) {
tagBits |= TagBits.AnnotationNonNull;
} else if (annotationType.hasNullBit(TypeIds.BitNonNullByDefaultAnnotation)) {
tagBits |= determineNonNullByDefaultTagBits(annotationType, valueAttribute);
}
}
if (compilerOptions.isAnnotationBasedResourceAnalysisEnabled) {
if (annotationType.hasTypeBit(TypeIds.BitOwningAnnotation)) {
tagBits |= TagBits.AnnotationOwning;
} else if (annotationType.hasTypeBit(TypeIds.BitNotOwningAnnotation)) {
tagBits |= TagBits.AnnotationNotOwning;
}
}
return tagBits;
}
private long determineNonNullByDefaultTagBits(ReferenceBinding annotationType, MemberValuePair valueAttribute) {
long tagBits = 0;
Object value = null;
if (valueAttribute != null) {
if (valueAttribute.compilerElementPair != null)
value = valueAttribute.compilerElementPair.value;
} else { // fetch default value - TODO: cache it?
MethodBinding[] methods = annotationType.methods();
if (methods != null && methods.length == 1)
value = methods[0].getDefaultValue();
else
tagBits |= Binding.DefaultLocationsForTrueValue; // custom unconfigurable NNBD
}
if (value instanceof BooleanConstant) {
// boolean value is used for declaration annotations, signal using the annotation tag bit:
tagBits |= ((BooleanConstant)value).booleanValue() ? Binding.DefaultLocationsForTrueValue : Binding.NULL_UNSPECIFIED_BY_DEFAULT;
} else if (value != null) {
// non-boolean value signals type annotations, evaluate from DefaultLocation[] to bitvector a la Binding#NullnessDefaultMASK:
tagBits |= nullLocationBitsFromAnnotationValue(value);
} else {
int result = BinaryTypeBinding.evaluateTypeQualifierDefault(annotationType);
if(result != 0) {
return result;
}
}
return tagBits;
}
/**
* Convert the value() attribute of @NonNullByDefault into a bitvector a la {@link Binding#NullnessDefaultMASK}.
* This method understands value encodings from source and binary types.
*
* pre: null annotation analysis is enabled
*/
public static int nullLocationBitsFromAnnotationValue(Object value) {
if (value instanceof Object[]) {
if (((Object[]) value).length == 0) { // ({})
return Binding.NULL_UNSPECIFIED_BY_DEFAULT;
} else { // ({vals...})
int bits = 0;
for (Object single : (Object[])value)
bits |= evaluateDefaultNullnessLocation(single);
return bits;
}
} else { // (val)
return evaluateDefaultNullnessLocation(value);
}
}
private static int evaluateDefaultNullnessLocation(Object value) {
char[] name = null;
if (value instanceof FieldBinding) {
name = ((FieldBinding) value).name;
} else if (value instanceof EnumConstantSignature) {
name = ((EnumConstantSignature) value).getEnumConstantName();
} else if (value instanceof ElementValuePair.UnresolvedEnumConstant) {
name = ((ElementValuePair.UnresolvedEnumConstant) value).getEnumConstantName();
} else if (value instanceof BooleanConstant) {
return ((BooleanConstant)value).booleanValue() ? Binding.DefaultLocationsForTrueValue : Binding.NULL_UNSPECIFIED_BY_DEFAULT;
}
if (name != null) {
switch (name.length) {
case 5:
if (CharOperation.equals(name, TypeConstants.DEFAULT_LOCATION__FIELD))
return Binding.DefaultLocationField;
break;
case 9:
if (CharOperation.equals(name, TypeConstants.DEFAULT_LOCATION__PARAMETER))
return Binding.DefaultLocationParameter;
break;
case 10:
if (CharOperation.equals(name, TypeConstants.DEFAULT_LOCATION__TYPE_BOUND))
return Binding.DefaultLocationTypeBound;
break;
case 11:
if (CharOperation.equals(name, TypeConstants.DEFAULT_LOCATION__RETURN_TYPE))
return Binding.DefaultLocationReturnType;
break;
case 13 :
if (CharOperation.equals(name, TypeConstants.DEFAULT_LOCATION__TYPE_ARGUMENT))
return Binding.DefaultLocationTypeArgument;
break;
case 14 :
if (CharOperation.equals(name, TypeConstants.DEFAULT_LOCATION__TYPE_PARAMETER))
return Binding.DefaultLocationTypeParameter;
if (CharOperation.equals(name, TypeConstants.DEFAULT_LOCATION__ARRAY_CONTENTS))
return Binding.DefaultLocationArrayContents;
break;
}
}
return 0;
}
public static int nullLocationBitsFromElementTypeAnnotationValue(Object value) {
if (value instanceof Object[]) {
if (((Object[]) value).length == 0) { // ({})
return Binding.NULL_UNSPECIFIED_BY_DEFAULT;
} else { // ({vals...})
int bits = 0;
for (Object single : (Object[])value)
bits |= evaluateElementTypeNullnessLocation(single);
return bits;
}
} else { // (val)
return evaluateElementTypeNullnessLocation(value);
}
}
private static int evaluateElementTypeNullnessLocation(Object value) {
char[] name = null;
if (value instanceof FieldBinding) {
name = ((FieldBinding) value).name;
} else if (value instanceof EnumConstantSignature) {
name = ((EnumConstantSignature) value).getEnumConstantName();
} else if (value instanceof ElementValuePair.UnresolvedEnumConstant) {
name = ((ElementValuePair.UnresolvedEnumConstant) value).getEnumConstantName();
}
if (name != null) {
switch (name.length) {
case 5:
if (CharOperation.equals(name, TypeConstants.UPPER_FIELD))
return Binding.DefaultLocationField;
break;
case 6:
if (CharOperation.equals(name, TypeConstants.UPPER_METHOD))
return Binding.DefaultLocationReturnType;
break;
case 9:
if (CharOperation.equals(name, TypeConstants.UPPER_PARAMETER))
return Binding.DefaultLocationParameter;
break;
}
}
return 0;
}
static String getRetentionName(long tagBits) {
if ((tagBits & TagBits.AnnotationRuntimeRetention) == TagBits.AnnotationRuntimeRetention) {
// TagBits.AnnotationRuntimeRetention combines both TagBits.AnnotationClassRetention & TagBits.AnnotationSourceRetention
return new String(UPPER_RUNTIME);
} else if ((tagBits & TagBits.AnnotationSourceRetention) != 0) {
return new String(UPPER_SOURCE);
} else {
return new String(TypeConstants.UPPER_CLASS);
}
}
private static long getAnnotationRetention(ReferenceBinding binding) {
long retention = binding.getAnnotationTagBits() & TagBits.AnnotationRetentionMASK;
// Retention defaults to CLASS
return retention != 0 ? retention : TagBits.AnnotationClassRetention;
}
public void checkRepeatableMetaAnnotation(BlockScope scope) {
// `this' is the @Repeatable meta annotation, its recipient is the *repeatable* annotation type - we are at the declaration site, not the repeating use site.
ReferenceBinding repeatableAnnotationType = (ReferenceBinding) this.recipient; // know it to be an annotation type. On target miss we don't get here
MemberValuePair[] valuePairs = this.memberValuePairs();
if (valuePairs == null || valuePairs.length != 1)
return;
Object value = valuePairs[0].compilerElementPair.value;
if (!(value instanceof ReferenceBinding))
return; // Has deeper problems, will bark elsewhere.
ReferenceBinding containerAnnotationType = (ReferenceBinding) value;
if (!containerAnnotationType.isAnnotationType())
return; // Has deeper problems, will bark elsewhere.
repeatableAnnotationType.setContainerAnnotationType(containerAnnotationType); // For now. May be reset later to PRB in case of problems.
checkContainerAnnotationType(valuePairs[0], scope, containerAnnotationType, repeatableAnnotationType, false); // false => not use site, i.e declaration site error reporting requested.
}
public static void checkContainerAnnotationType(ASTNode culpritNode, BlockScope scope, ReferenceBinding containerAnnotationType, ReferenceBinding repeatableAnnotationType, boolean useSite) {
MethodBinding[] annotationMethods = containerAnnotationType.methods();
boolean sawValue = false;
for (int i = 0, length = annotationMethods.length; i < length; ++i) {
MethodBinding method = annotationMethods[i];
if (CharOperation.equals(method.selector, TypeConstants.VALUE)) {
sawValue = true;
if (method.returnType.isArrayType() && method.returnType.dimensions() == 1) {
ArrayBinding array = (ArrayBinding) method.returnType;
if (TypeBinding.equalsEquals(array.elementsType(), repeatableAnnotationType)) continue;
}
repeatableAnnotationType.tagAsHavingDefectiveContainerType();
scope.problemReporter().containerAnnotationTypeHasWrongValueType(culpritNode, containerAnnotationType, repeatableAnnotationType, method.returnType);
} else {
// Not the value() - must have default (or else isn't suitable as container)
if ((method.modifiers & ClassFileConstants.AccAnnotationDefault) == 0) {
repeatableAnnotationType.tagAsHavingDefectiveContainerType();
scope.problemReporter().containerAnnotationTypeHasNonDefaultMembers(culpritNode, containerAnnotationType, method.selector);
}
}
}
if (!sawValue) {
repeatableAnnotationType.tagAsHavingDefectiveContainerType();
scope.problemReporter().containerAnnotationTypeMustHaveValue(culpritNode, containerAnnotationType);
}
if (useSite)
checkContainingAnnotationTargetAtUse((Annotation) culpritNode, scope, containerAnnotationType, repeatableAnnotationType);
else
checkContainerAnnotationTypeTarget(culpritNode, scope, containerAnnotationType, repeatableAnnotationType);
long annotationTypeBits = getAnnotationRetention(repeatableAnnotationType);
long containerTypeBits = getAnnotationRetention(containerAnnotationType);
// Due to clever layout of the bits, we can compare the absolute value directly
if (containerTypeBits < annotationTypeBits) {
repeatableAnnotationType.tagAsHavingDefectiveContainerType();
scope.problemReporter().containerAnnotationTypeHasShorterRetention(culpritNode, repeatableAnnotationType, getRetentionName(annotationTypeBits), containerAnnotationType, getRetentionName(containerTypeBits));
}
if ((repeatableAnnotationType.getAnnotationTagBits() & TagBits.AnnotationDocumented) != 0 && (containerAnnotationType.getAnnotationTagBits() & TagBits.AnnotationDocumented) == 0) {
repeatableAnnotationType.tagAsHavingDefectiveContainerType();
scope.problemReporter().repeatableAnnotationTypeIsDocumented(culpritNode, repeatableAnnotationType, containerAnnotationType);
}
if ((repeatableAnnotationType.getAnnotationTagBits() & TagBits.AnnotationInherited) != 0 && (containerAnnotationType.getAnnotationTagBits() & TagBits.AnnotationInherited) == 0) {
repeatableAnnotationType.tagAsHavingDefectiveContainerType();
scope.problemReporter().repeatableAnnotationTypeIsInherited(culpritNode, repeatableAnnotationType, containerAnnotationType);
}
}
// This is for error reporting for bad targets at annotation type declaration site (as opposed to the repeat site)
private static void checkContainerAnnotationTypeTarget(ASTNode culpritNode, Scope scope, ReferenceBinding containerType, ReferenceBinding repeatableAnnotationType) {
long tagBits = repeatableAnnotationType.getAnnotationTagBits();
if ((tagBits & TagBits.AnnotationTargetMASK) == 0)
tagBits = TagBits.AnnotationForDeclarationMASK; // absence of @Target meta-annotation implies all declaration targets not all targets.
long containerAnnotationTypeTypeTagBits = containerType.getAnnotationTagBits();
if ((containerAnnotationTypeTypeTagBits & TagBits.AnnotationTargetMASK) == 0)
containerAnnotationTypeTypeTagBits = TagBits.AnnotationForDeclarationMASK;
final long targets = tagBits & TagBits.AnnotationTargetMASK;
final long containerAnnotationTypeTargets = containerAnnotationTypeTypeTagBits & TagBits.AnnotationTargetMASK;
if ((containerAnnotationTypeTargets & ~targets) != 0) {
class MissingTargetBuilder {
StringBuilder targetBuffer = new StringBuilder();
void check(long targetMask, char[] targetName) {
if ((containerAnnotationTypeTargets & targetMask & ~targets) != 0) {
// if targetMask equals TagBits.AnnotationForType implies
// TagBits.AnnotationForType is part of containerAnnotationTypeTargets
if (targetMask == TagBits.AnnotationForType &&
(targets & TagBits.AnnotationForTypeUse) != 0) {
return;
}
add(targetName);
}
}
void checkAnnotationType(char[] targetName) {
if ((containerAnnotationTypeTargets & TagBits.AnnotationForAnnotationType) != 0 &&
((targets & (TagBits.AnnotationForAnnotationType | TagBits.AnnotationForType))) == 0) {
add(targetName);
}
}
private void add(char[] targetName) {
if (this.targetBuffer.length() != 0) {
this.targetBuffer.append(", "); //$NON-NLS-1$
}
this.targetBuffer.append(targetName);
}
@Override
public String toString() {
return this.targetBuffer.toString();
}
public boolean hasError() {
return this.targetBuffer.length() != 0;
}
}
MissingTargetBuilder builder = new MissingTargetBuilder();
builder.check(TagBits.AnnotationForType, TypeConstants.TYPE);
builder.check(TagBits.AnnotationForField, TypeConstants.UPPER_FIELD);
builder.check(TagBits.AnnotationForMethod, TypeConstants.UPPER_METHOD);
builder.check(TagBits.AnnotationForParameter, TypeConstants.UPPER_PARAMETER);
builder.check(TagBits.AnnotationForConstructor, TypeConstants.UPPER_CONSTRUCTOR);
builder.check(TagBits.AnnotationForLocalVariable, TypeConstants.UPPER_LOCAL_VARIABLE);
builder.checkAnnotationType(TypeConstants.UPPER_ANNOTATION_TYPE);
builder.check(TagBits.AnnotationForPackage, TypeConstants.UPPER_PACKAGE);
builder.check(TagBits.AnnotationForTypeParameter, TypeConstants.TYPE_PARAMETER_TARGET);
builder.check(TagBits.AnnotationForTypeUse, TypeConstants.TYPE_USE_TARGET);
builder.check(TagBits.AnnotationForModule, TypeConstants.UPPER_MODULE);
builder.check(TagBits.AnnotationForRecordComponent, TypeConstants.UPPER_RECORD_COMPONENT);
if (builder.hasError()) {
repeatableAnnotationType.tagAsHavingDefectiveContainerType();
scope.problemReporter().repeatableAnnotationTypeTargetMismatch(culpritNode, repeatableAnnotationType, containerType, builder.toString());
}
}
}
// This is for error reporting for bad targets at the repeated annotation use site (as opposed to repeatable annotation type declaration site) - Leads to better message.
public static void checkContainingAnnotationTargetAtUse(Annotation repeatingAnnotation, BlockScope scope, TypeBinding containerAnnotationType, TypeBinding repeatingAnnotationType) {
// check (meta)target compatibility
if (!repeatingAnnotationType.isValidBinding()) {
// no need to check annotation usage if missing
return;
}
if (isAnnotationTargetAllowed(repeatingAnnotation, scope, containerAnnotationType, repeatingAnnotation.recipient.kind()) != AnnotationTargetAllowed.YES) {
scope.problemReporter().disallowedTargetForContainerAnnotation(repeatingAnnotation, containerAnnotationType);
}
}
public AnnotationBinding getCompilerAnnotation() {
return this.compilerAnnotation;
}
public boolean isRuntimeInvisible() {
final TypeBinding annotationBinding = this.resolvedType;
if (annotationBinding == null) {
return false;
}
long metaTagBits = annotationBinding.getAnnotationTagBits(); // could be forward reference
if ((metaTagBits & TagBits.AnnotationRetentionMASK) == 0)
return true; // by default the retention is CLASS
return (metaTagBits & TagBits.AnnotationRetentionMASK) == TagBits.AnnotationClassRetention;
}
public boolean isRuntimeTypeInvisible(boolean targetingTypeParameter) {
final TypeBinding annotationBinding = this.resolvedType;
if (annotationBinding == null) {
return false;
}
long metaTagBits = annotationBinding.getAnnotationTagBits(); // could be forward reference
if ((metaTagBits & (TagBits.AnnotationTargetMASK)) == 0) { // In the absence of explicit target, applicable only to declaration sites
if (!targetingTypeParameter)
return false;
} else if ((metaTagBits & (TagBits.AnnotationForTypeParameter | TagBits.AnnotationForTypeUse)) == 0) {
return false;
}
if ((metaTagBits & TagBits.AnnotationRetentionMASK) == 0)
return true; // by default the retention is CLASS
return (metaTagBits & TagBits.AnnotationRetentionMASK) == TagBits.AnnotationClassRetention;
}
public boolean isRuntimeTypeVisible(boolean targetingTypeParameter) {
final TypeBinding annotationBinding = this.resolvedType;
if (annotationBinding == null) {
return false;
}
long metaTagBits = annotationBinding.getAnnotationTagBits();
if ((metaTagBits & (TagBits.AnnotationTargetMASK)) == 0) { // In the absence of explicit target, applicable only to declaration sites
if (!targetingTypeParameter)
return false;
} else if ((metaTagBits & (TagBits.AnnotationForTypeParameter | TagBits.AnnotationForTypeUse)) == 0) {
return false;
}
if ((metaTagBits & TagBits.AnnotationRetentionMASK) == 0)
return false; // by default the retention is CLASS
return (metaTagBits & TagBits.AnnotationRetentionMASK) == TagBits.AnnotationRuntimeRetention;
}
public boolean isRuntimeVisible() {
final TypeBinding annotationBinding = this.resolvedType;
if (annotationBinding == null) {
return false;
}
long metaTagBits = annotationBinding.getAnnotationTagBits();
if ((metaTagBits & TagBits.AnnotationRetentionMASK) == 0)
return false; // by default the retention is CLASS
return (metaTagBits & TagBits.AnnotationRetentionMASK) == TagBits.AnnotationRuntimeRetention;
}
public abstract MemberValuePair[] memberValuePairs();
@Override
public StringBuilder printExpression(int indent, StringBuilder output) {
output.append('@');
this.type.printExpression(0, output);
return output;
}
public void recordSuppressWarnings(Scope scope, int startSuppresss, int endSuppress, boolean isSuppressingWarnings) {
IrritantSet suppressWarningIrritants = null;
MemberValuePair[] pairs = memberValuePairs();
pairLoop: for (int i = 0, length = pairs.length; i < length; i++) {
MemberValuePair pair = pairs[i];
if (CharOperation.equals(pair.name, TypeConstants.VALUE)) {
Expression value = pair.value;
if (value instanceof ArrayInitializer) {
ArrayInitializer initializer = (ArrayInitializer) value;
Expression[] inits = initializer.expressions;
if (inits != null) {
for (int j = 0, initsLength = inits.length; j < initsLength; j++) {
Constant cst = inits[j].constant;
if (cst != Constant.NotAConstant && cst.typeID() == T_JavaLangString) {
IrritantSet irritants = CompilerOptions.warningTokenToIrritants(cst.stringValue());
if (irritants != null) {
if (suppressWarningIrritants == null) {
suppressWarningIrritants = new IrritantSet(irritants);
} else if (suppressWarningIrritants.set(irritants) == null) {
scope.problemReporter().unusedWarningToken(inits[j]);
}
} else {
scope.problemReporter().unhandledWarningToken(inits[j]);
}
}
}
}
} else {
Constant cst = value.constant;
if (cst != Constant.NotAConstant && cst.typeID() == T_JavaLangString) {
IrritantSet irritants = CompilerOptions.warningTokenToIrritants(cst.stringValue());
if (irritants != null) {
suppressWarningIrritants = new IrritantSet(irritants);
// TODO: should check for unused warning token against enclosing annotation as well ?
} else {
scope.problemReporter().unhandledWarningToken(value);
}
}
}
break pairLoop;
}
}
if (isSuppressingWarnings && suppressWarningIrritants != null) {
scope.referenceCompilationUnit().recordSuppressWarnings(suppressWarningIrritants, this, startSuppresss, endSuppress, scope.referenceContext());
}
}
@Override
public TypeBinding resolveType(BlockScope scope) {
if (this.compilerAnnotation != null)
return this.resolvedType;
this.constant = Constant.NotAConstant;
TypeBinding typeBinding;
if (this.resolvedType == null) {
typeBinding = this.type.resolveType(scope);
if (typeBinding == null) {
this.resolvedType = new ProblemReferenceBinding(this.type.getTypeName(), null, ProblemReasons.NotFound);
return null;
}
this.resolvedType = typeBinding;
} else {
typeBinding = this.resolvedType;
}
// ensure type refers to an annotation type
if (!typeBinding.isAnnotationType() && typeBinding.isValidBinding()) {
scope.problemReporter().notAnnotationType(typeBinding, this.type);
return null;
}
ReferenceBinding annotationType = (ReferenceBinding) this.resolvedType;
MethodBinding[] methods = annotationType.methods();
// clone valuePairs to keep track of unused ones
MemberValuePair[] originalValuePairs = memberValuePairs();
MemberValuePair valueAttribute = null; // remember the first 'value' pair
MemberValuePair[] pairs;
int pairsLength = originalValuePairs.length;
if (pairsLength > 0) {
System.arraycopy(originalValuePairs, 0, pairs = new MemberValuePair[pairsLength], 0, pairsLength);
} else {
pairs = originalValuePairs;
}
nextMember: for (int i = 0, requiredLength = methods.length; i < requiredLength; i++) {
MethodBinding method = methods[i];
char[] selector = method.selector;
boolean foundValue = false;
nextPair: for (int j = 0; j < pairsLength; j++) {
MemberValuePair pair = pairs[j];
if (pair == null) continue nextPair;
char[] name = pair.name;
if (CharOperation.equals(name, selector)) {
if (valueAttribute == null && CharOperation.equals(name, TypeConstants.VALUE)) {
valueAttribute = pair;
}
pair.binding = method;
pair.resolveTypeExpecting(scope, method.returnType);
pairs[j] = null; // consumed
foundValue = true;
// check duplicates
boolean foundDuplicate = false;
for (int k = j+1; k < pairsLength; k++) {
MemberValuePair otherPair = pairs[k];
if (otherPair == null) continue;
if (CharOperation.equals(otherPair.name, selector)) {
foundDuplicate = true;
scope.problemReporter().duplicateAnnotationValue(annotationType, otherPair);
otherPair.binding = method;
otherPair.resolveTypeExpecting(scope, method.returnType);
pairs[k] = null;
}
}
if (foundDuplicate) {
scope.problemReporter().duplicateAnnotationValue(annotationType, pair);
continue nextMember;
}
}
}
if (!foundValue
&& (method.modifiers & ClassFileConstants.AccAnnotationDefault) == 0
&& (this.bits & IsRecovered) == 0
&& annotationType.isValidBinding()) {
scope.problemReporter().missingValueForAnnotationMember(this, selector);
}
}
// check unused pairs
for (int i = 0; i < pairsLength; i++) {
if (pairs[i] != null) {
if (annotationType.isValidBinding()) {
scope.problemReporter().undefinedAnnotationValue(annotationType, pairs[i]);
}
pairs[i].resolveTypeExpecting(scope, null); // resilient
}
}
this.compilerAnnotation = scope.environment().createAnnotation((ReferenceBinding) this.resolvedType, computeElementValuePairs());
// recognize standard annotations ?
long tagBits = detectStandardAnnotation(scope, annotationType, valueAttribute);
int defaultNullness = (int)(tagBits & Binding.NullnessDefaultMASK);
tagBits &= ~Binding.NullnessDefaultMASK;
CompilerOptions compilerOptions = scope.compilerOptions();
if ((tagBits & TagBits.AnnotationDeprecated) != 0 && compilerOptions.complianceLevel >= ClassFileConstants.JDK9 && !compilerOptions.storeAnnotations) {
this.recipient.setAnnotations(new AnnotationBinding[] {this.compilerAnnotation}, true); // force storing enhanced deprecation
}
// record annotation positions in the compilation result
scope.referenceCompilationUnit().recordSuppressWarnings(IrritantSet.NLS, null, this.sourceStart, this.declarationSourceEnd, scope.referenceContext());
if (this.recipient != null) {
int kind = this.recipient.kind();
if (tagBits != 0 || defaultNullness != 0) {
// tag bits onto recipient
switch (kind) {
case Binding.MODULE :
SourceModuleBinding module = (SourceModuleBinding) this.recipient;
module.tagBits |= tagBits;
if ((tagBits & TagBits.AnnotationSuppressWarnings) != 0) {
ModuleDeclaration moduleDeclaration = module.scope.referenceContext.moduleDeclaration;
recordSuppressWarnings(scope, 0, moduleDeclaration.declarationSourceEnd, compilerOptions.suppressWarnings);
}
module.defaultNullness |= defaultNullness;
break;
case Binding.PACKAGE :
((PackageBinding)this.recipient).tagBits |= tagBits;
break;
case Binding.TYPE :
case Binding.GENERIC_TYPE :
SourceTypeBinding sourceType = (SourceTypeBinding) this.recipient;
if ((tagBits & TagBits.AnnotationRepeatable) == 0 || sourceType.isAnnotationType()) // don't set AnnotationRepeatable on non-annotation types.
sourceType.tagBits |= tagBits;
if ((tagBits & TagBits.AnnotationSuppressWarnings) != 0) {
TypeDeclaration typeDeclaration = sourceType.scope.referenceContext;
int start;
if (scope.referenceCompilationUnit().types[0] == typeDeclaration) {
start = 0;
} else {
start = typeDeclaration.declarationSourceStart;
}
recordSuppressWarnings(scope, start, typeDeclaration.declarationSourceEnd, compilerOptions.suppressWarnings);
}
sourceType.defaultNullness |= defaultNullness;
break;
case Binding.METHOD :
MethodBinding sourceMethod = (MethodBinding) this.recipient;
sourceMethod.tagBits |= tagBits;
if ((tagBits & TagBits.AnnotationSuppressWarnings) != 0) {
sourceType = (SourceTypeBinding) sourceMethod.declaringClass;
AbstractMethodDeclaration methodDeclaration = sourceType.scope.referenceContext.declarationOf(sourceMethod);
recordSuppressWarnings(scope, methodDeclaration.declarationSourceStart, methodDeclaration.declarationSourceEnd, compilerOptions.suppressWarnings);
}
long nullBits = sourceMethod.tagBits & TagBits.AnnotationNullMASK;
if (nullBits == TagBits.AnnotationNullMASK) {
scope.problemReporter().contradictoryNullAnnotations(this);
sourceMethod.tagBits &= ~TagBits.AnnotationNullMASK; // avoid secondary problems
}
if (nullBits != 0 && sourceMethod.isConstructor()) {
if (compilerOptions.sourceLevel >= ClassFileConstants.JDK1_8)
scope.problemReporter().nullAnnotationUnsupportedLocation(this);
// for declaration annotations the inapplicability will be reported below
sourceMethod.tagBits &= ~TagBits.AnnotationNullMASK;
}
sourceMethod.defaultNullness |= defaultNullness;
break;
case Binding.RECORD_COMPONENT :
RecordComponentBinding sourceRecordComponent = (RecordComponentBinding) this.recipient;
sourceRecordComponent.tagBits |= tagBits;
if ((tagBits & TagBits.AnnotationSuppressWarnings) != 0) {
RecordComponent recordComponent = sourceRecordComponent.sourceRecordComponent();
recordSuppressWarnings(scope, recordComponent.declarationSourceStart, recordComponent.declarationSourceEnd, compilerOptions.suppressWarnings);
}
// TODO: BUG 562478 Consideration - to uncomment/modify the following:
// if (defaultNullness != 0) {
// RecordComponent recordComponent = sourceRecordComponent.sourceRecordComponent();
// // test merged value of defaultNullness contributed by this annotation and previous annotations on same target is redundant w.r.t. containing value
// // (for targets other than fields the resulting value is tested only once after processing all annotations, but this is hard to do for fields)
// Binding target = scope.parent.checkRedundantDefaultNullness(
// defaultNullness | scope.localNonNullByDefaultValue(recordComponent.sourceStart),
// recordComponent.sourceStart);
// scope.recordNonNullByDefault(recordComponent.binding, defaultNullness, this, recordComponent.declarationSourceStart, recordComponent.declarationSourceEnd);
// if (target != null) {
// scope.problemReporter().nullDefaultAnnotationIsRedundant(recordComponent, new Annotation[]{this}, target);
// }
// }
// // fields don't yet have their type resolved, in 1.8 null annotations
// // will be transfered from the field to its type during STB.resolveTypeFor().
// if ((sourceRecordComponent.tagBits & TagBits.AnnotationNullMASK) == TagBits.AnnotationNullMASK) {
// scope.problemReporter().contradictoryNullAnnotations(this);
// sourceRecordComponent.tagBits &= ~TagBits.AnnotationNullMASK; // avoid secondary problems
// }
break;
case Binding.FIELD :
FieldBinding sourceField = (FieldBinding) this.recipient;
sourceField.tagBits |= tagBits;
if ((tagBits & TagBits.AnnotationSuppressWarnings) != 0) {
sourceType = (SourceTypeBinding) sourceField.declaringClass;
FieldDeclaration fieldDeclaration = sourceType.scope.referenceContext.declarationOf(sourceField);
recordSuppressWarnings(scope, fieldDeclaration.declarationSourceStart, fieldDeclaration.declarationSourceEnd, compilerOptions.suppressWarnings);
}
if (defaultNullness != 0) {
sourceType = (SourceTypeBinding) sourceField.declaringClass;
FieldDeclaration fieldDeclaration = sourceType.scope.referenceContext.declarationOf(sourceField);
// test merged value of defaultNullness contributed by this annotation and previous annotations on same target is redundant w.r.t. containing value
// (for targets other than fields the resulting value is tested only once after processing all annotations, but this is hard to do for fields)
Binding target = scope.parent.checkRedundantDefaultNullness(
defaultNullness | scope.localNonNullByDefaultValue(fieldDeclaration.sourceStart),
fieldDeclaration.sourceStart);
scope.recordNonNullByDefault(fieldDeclaration.binding, defaultNullness, this, fieldDeclaration.declarationSourceStart, fieldDeclaration.declarationSourceEnd);
if (target != null) {
scope.problemReporter().nullDefaultAnnotationIsRedundant(fieldDeclaration, new Annotation[]{this}, target);
}
}
// fields don't yet have their type resolved, in 1.8 null annotations
// will be transfered from the field to its type during STB.resolveTypeFor().
if ((sourceField.tagBits & TagBits.AnnotationNullMASK) == TagBits.AnnotationNullMASK) {
scope.problemReporter().contradictoryNullAnnotations(this);
sourceField.tagBits &= ~TagBits.AnnotationNullMASK; // avoid secondary problems
}
break;
case Binding.LOCAL :
LocalVariableBinding variable = (LocalVariableBinding) this.recipient;
variable.tagBits |= tagBits;
if ((variable.tagBits & TagBits.AnnotationNullMASK) == TagBits.AnnotationNullMASK) {
scope.problemReporter().contradictoryNullAnnotations(this);
variable.tagBits &= ~TagBits.AnnotationNullMASK; // avoid secondary problems
}
if ((tagBits & TagBits.AnnotationSuppressWarnings) != 0) {
LocalDeclaration localDeclaration = variable.declaration;
recordSuppressWarnings(scope, localDeclaration.declarationSourceStart, localDeclaration.declarationSourceEnd, compilerOptions.suppressWarnings);
}
// note: defaultNullness for local declarations has been already been handled earlier by handleNonNullByDefault()
break;
}
}
if (kind == Binding.TYPE) {
SourceTypeBinding sourceType = (SourceTypeBinding) this.recipient;
if (CharOperation.equals(sourceType.sourceName, TypeConstants.PACKAGE_INFO_NAME))
kind = Binding.PACKAGE;
}
checkAnnotationTarget(this, scope, annotationType, kind, this.recipient, tagBits & TagBits.AnnotationNullMASK);
}
return this.resolvedType;
}
public long handleNonNullByDefault(BlockScope scope) {
TypeBinding typeBinding = this.resolvedType;
if (typeBinding == null) {
typeBinding = this.type.resolveType(scope);
if (typeBinding == null) {
return 0;
}
this.resolvedType = typeBinding;
}
if (!typeBinding.isAnnotationType()) {
return 0;
}
ReferenceBinding annotationType = (ReferenceBinding) typeBinding;
if (!annotationType.hasNullBit(TypeIds.BitNonNullByDefaultAnnotation)) {
return 0;
}
MethodBinding[] methods = annotationType.methods();
// clone valuePairs to keep track of unused ones
MemberValuePair[] pairs = memberValuePairs();
MemberValuePair valueAttribute = null; // remember the first 'value' pair
int pairsLength = pairs.length;
for (int i = 0, requiredLength = methods.length; i < requiredLength; i++) {
MethodBinding method = methods[i];
char[] selector = method.selector;
nextPair: for (int j = 0; j < pairsLength; j++) {
MemberValuePair pair = pairs[j];
if (pair == null) continue nextPair;
char[] name = pair.name;
if (CharOperation.equals(name, selector)) {
if (valueAttribute == null && CharOperation.equals(name, TypeConstants.VALUE)) {
valueAttribute = pair;
pair.binding = method;
pair.resolveTypeExpecting(scope, method.returnType);
}
}
}
}
// recognize standard annotations ?
long tagBits = determineNonNullByDefaultTagBits(annotationType, valueAttribute);
return (int) (tagBits & Binding.NullnessDefaultMASK);
}
public enum AnnotationTargetAllowed {
YES, NO_DUE_TO_LACKING_TARGET, TYPE_ANNOTATION_ON_QUALIFIED_NAME, NO/*_DUE_TO_MISMATCHED_TARGET*/;
}
private static AnnotationTargetAllowed isAnnotationTargetAllowed(Binding recipient, BlockScope scope, TypeBinding annotationType, int kind, long metaTagBits) {
switch (kind) {
case Binding.PACKAGE :
if ((metaTagBits & TagBits.AnnotationForPackage) != 0)
return AnnotationTargetAllowed.YES;
else if (scope.compilerOptions().sourceLevel <= ClassFileConstants.JDK1_6) {
SourceTypeBinding sourceType = (SourceTypeBinding) recipient;
if (CharOperation.equals(sourceType.sourceName, TypeConstants.PACKAGE_INFO_NAME))
return AnnotationTargetAllowed.YES;
}
break;
case Binding.TYPE_USE :
if ((metaTagBits & TagBits.AnnotationForTypeUse) != 0) {
// jsr 308
return AnnotationTargetAllowed.YES;
}
if (scope.compilerOptions().sourceLevel < ClassFileConstants.JDK1_8) {
// already reported as syntax error; don't report secondary problems
return AnnotationTargetAllowed.YES;
}
break;
case Binding.TYPE :
case Binding.GENERIC_TYPE :
if (((ReferenceBinding)recipient).isAnnotationType()) {
if ((metaTagBits & (TagBits.AnnotationForAnnotationType | TagBits.AnnotationForType | TagBits.AnnotationForTypeUse)) != 0)
return AnnotationTargetAllowed.YES;
} else if ((metaTagBits & (TagBits.AnnotationForType | TagBits.AnnotationForTypeUse)) != 0) {
return AnnotationTargetAllowed.YES;
} else if ((metaTagBits & TagBits.AnnotationForPackage) != 0) {
if (CharOperation.equals(((ReferenceBinding) recipient).sourceName, TypeConstants.PACKAGE_INFO_NAME))
return AnnotationTargetAllowed.YES;
}
break;
case Binding.METHOD :
MethodBinding methodBinding = (MethodBinding) recipient;
if (methodBinding.isConstructor()) {
if ((metaTagBits & (TagBits.AnnotationForConstructor | TagBits.AnnotationForTypeUse)) != 0)
return AnnotationTargetAllowed.YES;
} else if ((metaTagBits & TagBits.AnnotationForMethod) != 0) {
return AnnotationTargetAllowed.YES;
} else if ((metaTagBits & TagBits.AnnotationForTypeUse) != 0) {
SourceTypeBinding sourceType = (SourceTypeBinding) methodBinding.declaringClass;
MethodDeclaration methodDecl = (MethodDeclaration) sourceType.scope.referenceContext.declarationOf(methodBinding);
if (isTypeUseCompatible(methodDecl.returnType, scope)) {
return AnnotationTargetAllowed.YES;
} else {
return AnnotationTargetAllowed.TYPE_ANNOTATION_ON_QUALIFIED_NAME;
}
}
break;
case Binding.FIELD :
if ((metaTagBits & TagBits.AnnotationForField) != 0) {
return AnnotationTargetAllowed.YES;
} else if (((FieldBinding) recipient).isRecordComponent()){
long recordComponentMask = TagBits.AnnotationForRecordComponent |
TagBits.AnnotationForMethod |
TagBits.AnnotationForParameter |
TagBits.AnnotationForTypeUse;
return (metaTagBits & recordComponentMask) != 0 ? AnnotationTargetAllowed.YES : AnnotationTargetAllowed.NO;
} else if ((metaTagBits & TagBits.AnnotationForTypeUse) != 0) {
FieldBinding sourceField = (FieldBinding) recipient;
SourceTypeBinding sourceType = (SourceTypeBinding) sourceField.declaringClass;
FieldDeclaration fieldDeclaration = sourceType.scope.referenceContext.declarationOf(sourceField);
if (isTypeUseCompatible(fieldDeclaration.type, scope)) {
return AnnotationTargetAllowed.YES;
} else {
return AnnotationTargetAllowed.TYPE_ANNOTATION_ON_QUALIFIED_NAME;
}
}
break;
case Binding.RECORD_COMPONENT :
/* JLS 14 9.7.4 Record Preview
* It is a compile-time error if an annotation of type T is syntactically a modifier for:
* ...
* a record component but T is not applicable to record component declarations, field declarations,
* method declarations, or type contexts.
*/
long recordComponentMask = TagBits.AnnotationForRecordComponent |
TagBits.AnnotationForField |
TagBits.AnnotationForMethod |
TagBits.AnnotationForParameter | // See JLS 14 8.10.4 Records Preview - TODO revisit in J15
TagBits.AnnotationForTypeUse;
return (metaTagBits & recordComponentMask) != 0 ? AnnotationTargetAllowed.YES :
AnnotationTargetAllowed.NO;
case Binding.LOCAL :
LocalVariableBinding localVariableBinding = (LocalVariableBinding) recipient;
if ((localVariableBinding.tagBits & TagBits.IsArgument) != 0) {
if ((metaTagBits & TagBits.AnnotationForParameter) != 0) {
return AnnotationTargetAllowed.YES;
} else if ((metaTagBits & TagBits.AnnotationForTypeUse) != 0) {
if (isTypeUseCompatible(localVariableBinding.declaration.type, scope)) {
return AnnotationTargetAllowed.YES;
} else {
return AnnotationTargetAllowed.TYPE_ANNOTATION_ON_QUALIFIED_NAME;
}
}
} else if ((annotationType.tagBits & TagBits.AnnotationForLocalVariable) != 0) {
return AnnotationTargetAllowed.YES;
} else if ((metaTagBits & TagBits.AnnotationForTypeUse) != 0) {
if (localVariableBinding.declaration.isTypeNameVar(scope)) {
return AnnotationTargetAllowed.NO;
} else if (isTypeUseCompatible(localVariableBinding.declaration.type, scope)) {
return AnnotationTargetAllowed.YES;
} else {
return AnnotationTargetAllowed.TYPE_ANNOTATION_ON_QUALIFIED_NAME;
}
}
break;
case Binding.TYPE_PARAMETER : // jsr308
if ((metaTagBits & TagBits.AnnotationTargetMASK) == 0) {
return AnnotationTargetAllowed.YES;
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=391196
if ((metaTagBits & (TagBits.AnnotationForTypeParameter | TagBits.AnnotationForTypeUse)) != 0) {
return AnnotationTargetAllowed.YES;
}
break;
case Binding.MODULE:
if ((metaTagBits & (TagBits.AnnotationForModule)) != 0) {
return AnnotationTargetAllowed.YES;
}
break;
}
return AnnotationTargetAllowed.NO;
}
public static boolean isAnnotationTargetAllowed(BlockScope scope, TypeBinding annotationType, Binding recipient) {
long metaTagBits = annotationType.getAnnotationTagBits(); // could be forward reference
if ((metaTagBits & TagBits.AnnotationTargetMASK) == 0) {
return true;
}
return isAnnotationTargetAllowed(recipient, scope, annotationType, recipient.kind(), metaTagBits)==AnnotationTargetAllowed.YES;
}
static AnnotationTargetAllowed isAnnotationTargetAllowed(Annotation annotation, BlockScope scope, TypeBinding annotationType, int kind) {
long metaTagBits = annotationType.getAnnotationTagBits(); // could be forward reference
if ((metaTagBits & TagBits.AnnotationTargetMASK) == 0) {
/* JLS 9.6.4.1: If an annotation of type java.lang.annotation.Target is not present on the
declaration of an annotation interface A, then A is applicable in all declaration
contexts and in no type contexts.
*/
return kind == Binding.TYPE_USE ? AnnotationTargetAllowed.NO_DUE_TO_LACKING_TARGET : AnnotationTargetAllowed.YES;
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=391201
if ((metaTagBits & TagBits.AnnotationForDeclarationMASK) == 0
&& (metaTagBits & TagBits.AnnotationForTypeUse) != 0) {
if (scope.compilerOptions().sourceLevel < ClassFileConstants.JDK1_8) {
switch (kind) {
case Binding.PACKAGE :
case Binding.TYPE :
case Binding.GENERIC_TYPE :
case Binding.METHOD :
case Binding.FIELD :
case Binding.LOCAL :
case Binding.RECORD_COMPONENT :
scope.problemReporter().invalidUsageOfTypeAnnotations(annotation);
}
}
}
return isAnnotationTargetAllowed(annotation.recipient, scope, annotationType, kind, metaTagBits);
}
static void checkAnnotationTarget(Annotation annotation, BlockScope scope, ReferenceBinding annotationType, int kind, Binding recipient, long tagBitsToRevert) {
// check (meta)target compatibility
if (!annotationType.isValidBinding()) {
// no need to check annotation usage if missing
return;
}
AnnotationTargetAllowed annotationTargetAllowed = isAnnotationTargetAllowed(annotation, scope, annotationType, kind);
if (annotationTargetAllowed != AnnotationTargetAllowed.YES) {
if(annotationTargetAllowed == AnnotationTargetAllowed.TYPE_ANNOTATION_ON_QUALIFIED_NAME) {
scope.problemReporter().typeAnnotationAtQualifiedName(annotation);
} else if (annotationTargetAllowed == AnnotationTargetAllowed.NO_DUE_TO_LACKING_TARGET) {
scope.problemReporter().explitAnnotationTargetRequired(annotation);
} else {
scope.problemReporter().disallowedTargetForAnnotation(annotation);
}
if (recipient instanceof TypeBinding)
((TypeBinding)recipient).tagBits &= ~tagBitsToRevert;
}
}
/**
* Check to see if a repeating annotation is in fact of a container annotation type for an annotation which is also present at the same target.
* @param scope The scope (for error reporting)
* @param repeatedAnnotationType Type of annotation which has been repeated (to check for possibly being a container for a repeatable annotation)
* @param sourceAnnotations The annotations to check
*/
public static void checkForInstancesOfRepeatableWithRepeatingContainerAnnotation(BlockScope scope, ReferenceBinding repeatedAnnotationType, Annotation[] sourceAnnotations) {
// Fail fast if the repeating annotation type can't be a container, anyway
MethodBinding[] valueMethods = repeatedAnnotationType.getMethods(TypeConstants.VALUE);
if (valueMethods.length != 1) return; // No violations possible
TypeBinding methodReturnType = valueMethods[0].returnType;
// value must be an array
if (! methodReturnType.isArrayType() || methodReturnType.dimensions() != 1) return;
ArrayBinding array = (ArrayBinding) methodReturnType;
TypeBinding elementsType = array.elementsType();
if (! elementsType.isRepeatableAnnotationType()) return; // Can't be a problem, then
for (int i= 0; i < sourceAnnotations.length; ++i) {
Annotation annotation = sourceAnnotations[i];
if (TypeBinding.equalsEquals(elementsType, annotation.resolvedType)) {
scope.problemReporter().repeatableAnnotationWithRepeatingContainer(annotation, repeatedAnnotationType);
return; // One is enough for this annotation type
}
}
}
// Check and answer if an attempt to annotate a package is being made. Error should be reported by caller.
public static boolean isTypeUseCompatible(TypeReference reference, Scope scope) {
if (reference != null && !(reference instanceof SingleTypeReference)) {
Binding binding = scope.getPackage(reference.getTypeName());
// In case of ProblemReferenceBinding, don't report additional error
if (binding instanceof PackageBinding) {
return false;
}
}
return true;
}
// Complain if an attempt to annotate the enclosing type of a static member type is being made.
public static void isTypeUseCompatible(TypeReference reference, Scope scope, Annotation[] annotations) {
if (annotations == null || reference == null || reference.getAnnotatableLevels() == 1)
return;
if (scope.environment().globalOptions.sourceLevel < ClassFileConstants.JDK1_8)
return;
TypeBinding resolvedType = reference.resolvedType == null ? null : reference.resolvedType.leafComponentType();
if (resolvedType == null || !resolvedType.isNestedType())
return;
nextAnnotation:
for (int i = 0, annotationsLength = annotations.length; i < annotationsLength; i++) {
Annotation annotation = annotations[i];
long metaTagBits = annotation.resolvedType.getAnnotationTagBits();
if ((metaTagBits & TagBits.AnnotationForTypeUse) != 0 && (metaTagBits & TagBits.AnnotationForDeclarationMASK) == 0) {
ReferenceBinding currentType = (ReferenceBinding) resolvedType;
while (currentType.isNestedType()) {
if (currentType.isStatic()) {
QualifiedTypeReference.rejectAnnotationsOnStaticMemberQualififer(scope, currentType, new Annotation [] { annotation });
continue nextAnnotation;
} else {
if (annotation.hasNullBit(TypeIds.BitNonNullAnnotation|TypeIds.BitNullableAnnotation)) {
scope.problemReporter().nullAnnotationAtQualifyingType(annotation);
continue nextAnnotation;
}
}
currentType = currentType.enclosingType();
}
}
}
}
public boolean hasNullBit(int bit) {
return this.resolvedType instanceof ReferenceBinding && ((ReferenceBinding) this.resolvedType).hasNullBit(bit);
}
@Override
public abstract void traverse(ASTVisitor visitor, BlockScope scope);
@Override
public abstract void traverse(ASTVisitor visitor, ClassScope scope);
public Annotation getPersistibleAnnotation() {
return this.persistibleAnnotation; // will be this for non-repeating annotation, the container for the first of the repeating ones and null for the followers.
}
public void setPersistibleAnnotation(ContainerAnnotation container) {
this.persistibleAnnotation = container; // will be a legitimate container for the first of the repeating ones and null for the followers.
}
}