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/*******************************************************************************
* Copyright (c) 2012, 2020 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
* Andy Clement (GoPivotal, Inc) aclement@gopivotal.com - Contributions for
* Bug 383624 - [1.8][compiler] Revive code generation support for type annotations (from Olivier's work)
* Bug 409247 - [1.8][compiler] Verify error with code allocating multidimensional array
* Bug 409517 - [1.8][compiler] Type annotation problems on more elaborate array references
* Bug 409250 - [1.8][compiler] Various loose ends in 308 code generation
*******************************************************************************/
package org.eclipse.jdt.internal.compiler.codegen;
import java.util.ArrayList;
import java.util.List;
import org.eclipse.jdt.internal.compiler.ClassFile;
import org.eclipse.jdt.internal.compiler.ast.ASTNode;
import org.eclipse.jdt.internal.compiler.ast.ArrayAllocationExpression;
import org.eclipse.jdt.internal.compiler.ast.TypeReference;
import org.eclipse.jdt.internal.compiler.classfmt.ClassFileConstants;
import org.eclipse.jdt.internal.compiler.lookup.ArrayBinding;
import org.eclipse.jdt.internal.compiler.lookup.MethodBinding;
import org.eclipse.jdt.internal.compiler.lookup.TypeBinding;
public class TypeAnnotationCodeStream extends StackMapFrameCodeStream {
public List<AnnotationContext> allTypeAnnotationContexts;
public TypeAnnotationCodeStream(ClassFile givenClassFile) {
super(givenClassFile);
this.generateAttributes |= ClassFileConstants.ATTR_TYPE_ANNOTATION;
this.allTypeAnnotationContexts = new ArrayList<>();
}
private void addAnnotationContext(TypeReference typeReference, int info, int targetType, ArrayAllocationExpression allocationExpression) {
allocationExpression.getAllAnnotationContexts(targetType, info, this.allTypeAnnotationContexts);
}
private void addAnnotationContext(TypeReference typeReference, int info, int targetType) {
typeReference.getAllAnnotationContexts(targetType, info, this.allTypeAnnotationContexts);
}
private void addAnnotationContext(TypeReference typeReference, int info, int typeIndex, int targetType) {
typeReference.getAllAnnotationContexts(targetType, info, typeIndex, this.allTypeAnnotationContexts);
}
@Override
public void instance_of(TypeReference typeReference, TypeBinding typeBinding) {
if (typeReference != null && (typeReference.bits & ASTNode.HasTypeAnnotations) != 0) {
addAnnotationContext(typeReference, this.position, AnnotationTargetTypeConstants.INSTANCEOF);
}
super.instance_of(typeReference, typeBinding);
}
@Override
public void multianewarray(
TypeReference typeReference,
TypeBinding typeBinding,
int dimensions,
ArrayAllocationExpression allocationExpression) {
if (typeReference != null && (typeReference.bits & ASTNode.HasTypeAnnotations) != 0) {
addAnnotationContext(typeReference, this.position, AnnotationTargetTypeConstants.NEW, allocationExpression);
}
super.multianewarray(typeReference, typeBinding, dimensions, allocationExpression);
}
@Override
public void new_(TypeReference typeReference, TypeBinding typeBinding) {
if (typeReference != null && (typeReference.bits & ASTNode.HasTypeAnnotations) != 0) {
addAnnotationContext(typeReference, this.position, AnnotationTargetTypeConstants.NEW);
}
super.new_(typeReference, typeBinding);
}
@Override
public void newArray(TypeReference typeReference, ArrayAllocationExpression allocationExpression, ArrayBinding arrayBinding) {
if (typeReference != null && (typeReference.bits & ASTNode.HasTypeAnnotations) != 0) {
addAnnotationContext(typeReference, this.position, AnnotationTargetTypeConstants.NEW, allocationExpression);
}
super.newArray(typeReference, allocationExpression, arrayBinding);
}
@Override
public void checkcast(TypeReference typeReference, TypeBinding typeBinding, int currentPosition) {
/* We use a slightly sub-optimal generation for intersection casts by resorting to a runtime cast for every intersecting type, but in
reality this should not matter. In its intended use form such as (I & Serializable) () -> {}, no cast is emitted at all. Also note
intersection cast type references cannot nest i.e ((X & I) & J) is not valid syntax.
*/
if (typeReference != null) {
TypeReference [] typeReferences = typeReference.getTypeReferences();
for (int i = typeReferences.length - 1; i >= 0; i--) { // need to emit right to left.
typeReference = typeReferences[i];
if (typeReference != null) {
if ((typeReference.bits & ASTNode.HasTypeAnnotations) != 0) {
if (!typeReference.resolvedType.isBaseType()) {
addAnnotationContext(typeReference, this.position, i, AnnotationTargetTypeConstants.CAST);
} else {
// for base type record it against the start position of the expression
addAnnotationContext(typeReference, currentPosition, i, AnnotationTargetTypeConstants.CAST);
}
}
if (!typeReference.resolvedType.isBaseType()) {
super.checkcast(typeReference, typeReference.resolvedType, currentPosition);
}
}
}
} else {
super.checkcast(null, typeBinding, currentPosition);
}
}
@Override
public void invoke(byte opcode, MethodBinding methodBinding, TypeBinding declaringClass, TypeReference[] typeArguments) {
if (typeArguments != null) {
int targetType = methodBinding.isConstructor()
? AnnotationTargetTypeConstants.CONSTRUCTOR_INVOCATION_TYPE_ARGUMENT
: AnnotationTargetTypeConstants.METHOD_INVOCATION_TYPE_ARGUMENT;
for (int i = 0, max = typeArguments.length; i < max; i++) {
TypeReference typeArgument = typeArguments[i];
if ((typeArgument.bits & ASTNode.HasTypeAnnotations) != 0) {
addAnnotationContext(typeArgument, this.position, i, targetType);
}
}
}
super.invoke(opcode, methodBinding, declaringClass, typeArguments);
}
@Override
public void invokeDynamic(int bootStrapIndex, int argsSize, int returnTypeSize, char[] selector, char[] signature,
boolean isConstructorReference, TypeReference lhsTypeReference, TypeReference [] typeArguments,
int typeId, TypeBinding type) {
if (lhsTypeReference != null && (lhsTypeReference.bits & ASTNode.HasTypeAnnotations) != 0) {
if (isConstructorReference) {
addAnnotationContext(lhsTypeReference, this.position, 0, AnnotationTargetTypeConstants.CONSTRUCTOR_REFERENCE);
} else {
addAnnotationContext(lhsTypeReference, this.position, 0, AnnotationTargetTypeConstants.METHOD_REFERENCE);
}
}
if (typeArguments != null) {
int targetType =
isConstructorReference
? AnnotationTargetTypeConstants.CONSTRUCTOR_REFERENCE_TYPE_ARGUMENT
: AnnotationTargetTypeConstants.METHOD_REFERENCE_TYPE_ARGUMENT;
for (int i = 0, max = typeArguments.length; i < max; i++) {
TypeReference typeArgument = typeArguments[i];
if ((typeArgument.bits & ASTNode.HasTypeAnnotations) != 0) {
addAnnotationContext(typeArgument, this.position, i, targetType);
}
}
}
super.invokeDynamic(bootStrapIndex, argsSize, returnTypeSize, selector, signature, isConstructorReference, lhsTypeReference, typeArguments, typeId, type);
}
@Override
public void reset(ClassFile givenClassFile) {
super.reset(givenClassFile);
this.allTypeAnnotationContexts = new ArrayList<>();
}
@Override
public void init(ClassFile targetClassFile) {
super.init(targetClassFile);
this.allTypeAnnotationContexts = new ArrayList<>();
}
}
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