/*******************************************************************************
* Copyright (c) 2000, 2014 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
* Stephan Herrmann - Contributions for
* Bug 360328 - [compiler][null] detect null problems in nested code (local class inside a loop)
* Bug 388630 - @NonNull diagnostics at line 0
* Bug 392099 - [1.8][compiler][null] Apply null annotation on types for null analysis
* Bug 416176 - [1.8][compiler][null] null type annotations cause grief on type variables
* Bug 424727 - [compiler][null] NullPointerException in nullAnnotationUnsupportedLocation(ProblemReporter.java:5708)
* Keigo Imai - Contribution for bug 388903 - Cannot extend inner class as an anonymous class when it extends the outer class
*******************************************************************************/
package org.eclipse.jdt.internal.compiler.ast;
import org.eclipse.jdt.core.compiler.*;
import org.eclipse.jdt.internal.compiler.*;
import org.eclipse.jdt.internal.compiler.impl.*;
import org.eclipse.jdt.internal.compiler.classfmt.ClassFileConstants;
import org.eclipse.jdt.internal.compiler.codegen.*;
import org.eclipse.jdt.internal.compiler.flow.*;
import org.eclipse.jdt.internal.compiler.lookup.*;
import org.eclipse.jdt.internal.compiler.parser.*;
import org.eclipse.jdt.internal.compiler.problem.*;
import org.eclipse.jdt.internal.compiler.util.Util;
public class TypeDeclaration extends Statement implements ProblemSeverities, ReferenceContext {
// Type decl kinds
public static final int CLASS_DECL = 1;
public static final int INTERFACE_DECL = 2;
public static final int ENUM_DECL = 3;
public static final int ANNOTATION_TYPE_DECL = 4;
public int modifiers = ClassFileConstants.AccDefault;
public int modifiersSourceStart;
public Annotation[] annotations;
public char[] name;
public TypeReference superclass;
public TypeReference[] superInterfaces;
public FieldDeclaration[] fields;
public AbstractMethodDeclaration[] methods;
public TypeDeclaration[] memberTypes;
public SourceTypeBinding binding;
public ClassScope scope;
public MethodScope initializerScope;
public MethodScope staticInitializerScope;
public boolean ignoreFurtherInvestigation = false;
public int maxFieldCount;
public int declarationSourceStart;
public int declarationSourceEnd;
public int bodyStart;
public int bodyEnd; // doesn't include the trailing comment if any.
public CompilationResult compilationResult;
public MethodDeclaration[] missingAbstractMethods;
public Javadoc javadoc;
public QualifiedAllocationExpression allocation; // for anonymous only
public TypeDeclaration enclosingType; // for member types only
public FieldBinding enumValuesSyntheticfield; // for enum
public int enumConstantsCounter;
// 1.5 support
public TypeParameter[] typeParameters;
public TypeDeclaration(CompilationResult compilationResult){
this.compilationResult = compilationResult;
}
/*
* We cause the compilation task to abort to a given extent.
*/
public void abort(int abortLevel, CategorizedProblem problem) {
switch (abortLevel) {
case AbortCompilation :
throw new AbortCompilation(this.compilationResult, problem);
case AbortCompilationUnit :
throw new AbortCompilationUnit(this.compilationResult, problem);
case AbortMethod :
throw new AbortMethod(this.compilationResult, problem);
default :
throw new AbortType(this.compilationResult, problem);
}
}
/**
* This method is responsible for adding a <clinit> method declaration to the type method collections.
* Note that this implementation is inserting it in first place (as VAJ or javac), and that this
* impacts the behavior of the method ConstantPool.resetForClinit(int. int), in so far as
* the latter will have to reset the constant pool state accordingly (if it was added first, it does
* not need to preserve some of the method specific cached entries since this will be the first method).
* inserts the clinit method declaration in the first position.
*
* @see org.eclipse.jdt.internal.compiler.codegen.ConstantPool#resetForClinit(int, int)
*/
public final void addClinit() {
//see comment on needClassInitMethod
if (needClassInitMethod()) {
int length;
AbstractMethodDeclaration[] methodDeclarations;
if ((methodDeclarations = this.methods) == null) {
length = 0;
methodDeclarations = new AbstractMethodDeclaration[1];
} else {
length = methodDeclarations.length;
System.arraycopy(
methodDeclarations,
0,
(methodDeclarations = new AbstractMethodDeclaration[length + 1]),
1,
length);
}
Clinit clinit = new Clinit(this.compilationResult);
methodDeclarations[0] = clinit;
// clinit is added in first location, so as to minimize the use of ldcw (big consumer of constant inits)
clinit.declarationSourceStart = clinit.sourceStart = this.sourceStart;
clinit.declarationSourceEnd = clinit.sourceEnd = this.sourceEnd;
clinit.bodyEnd = this.sourceEnd;
this.methods = methodDeclarations;
}
}
/*
* INTERNAL USE ONLY - Creates a fake method declaration for the corresponding binding.
* It is used to report errors for missing abstract methods.
*/
public MethodDeclaration addMissingAbstractMethodFor(MethodBinding methodBinding) {
TypeBinding[] argumentTypes = methodBinding.parameters;
int argumentsLength = argumentTypes.length;
//the constructor
MethodDeclaration methodDeclaration = new MethodDeclaration(this.compilationResult);
methodDeclaration.selector = methodBinding.selector;
methodDeclaration.sourceStart = this.sourceStart;
methodDeclaration.sourceEnd = this.sourceEnd;
methodDeclaration.modifiers = methodBinding.getAccessFlags() & ~ClassFileConstants.AccAbstract;
if (argumentsLength > 0) {
String baseName = "arg";//$NON-NLS-1$
Argument[] arguments = (methodDeclaration.arguments = new Argument[argumentsLength]);
for (int i = argumentsLength; --i >= 0;) {
arguments[i] = new Argument((baseName + i).toCharArray(), 0L, null /*type ref*/, ClassFileConstants.AccDefault);
}
}
//adding the constructor in the methods list
if (this.missingAbstractMethods == null) {
this.missingAbstractMethods = new MethodDeclaration[] { methodDeclaration };
} else {
MethodDeclaration[] newMethods;
System.arraycopy(
this.missingAbstractMethods,
0,
newMethods = new MethodDeclaration[this.missingAbstractMethods.length + 1],
1,
this.missingAbstractMethods.length);
newMethods[0] = methodDeclaration;
this.missingAbstractMethods = newMethods;
}
//============BINDING UPDATE==========================
methodDeclaration.binding = new MethodBinding(
methodDeclaration.modifiers | ClassFileConstants.AccSynthetic, //methodDeclaration
methodBinding.selector,
methodBinding.returnType,
argumentsLength == 0 ? Binding.NO_PARAMETERS : argumentTypes, //arguments bindings
methodBinding.thrownExceptions, //exceptions
this.binding); //declaringClass
methodDeclaration.scope = new MethodScope(this.scope, methodDeclaration, true);
methodDeclaration.bindArguments();
/* if (binding.methods == null) {
binding.methods = new MethodBinding[] { methodDeclaration.binding };
} else {
MethodBinding[] newMethods;
System.arraycopy(
binding.methods,
0,
newMethods = new MethodBinding[binding.methods.length + 1],
1,
binding.methods.length);
newMethods[0] = methodDeclaration.binding;
binding.methods = newMethods;
}*/
//===================================================
return methodDeclaration;
}
/**
* Flow analysis for a local innertype
*
*/
public FlowInfo analyseCode(BlockScope currentScope, FlowContext flowContext, FlowInfo flowInfo) {
if (this.ignoreFurtherInvestigation)
return flowInfo;
try {
if ((flowInfo.tagBits & FlowInfo.UNREACHABLE_OR_DEAD) == 0) {
this.bits |= ASTNode.IsReachable;
LocalTypeBinding localType = (LocalTypeBinding) this.binding;
localType.setConstantPoolName(currentScope.compilationUnitScope().computeConstantPoolName(localType));
}
manageEnclosingInstanceAccessIfNecessary(currentScope, flowInfo);
updateMaxFieldCount(); // propagate down the max field count
internalAnalyseCode(flowContext, flowInfo);
} catch (AbortType e) {
this.ignoreFurtherInvestigation = true;
}
return flowInfo;
}
/**
* Flow analysis for a member innertype
*
*/
public void analyseCode(ClassScope enclosingClassScope) {
if (this.ignoreFurtherInvestigation)
return;
try {
// propagate down the max field count
updateMaxFieldCount();
internalAnalyseCode(null, FlowInfo.initial(this.maxFieldCount));
} catch (AbortType e) {
this.ignoreFurtherInvestigation = true;
}
}
/**
* Flow analysis for a local member innertype
*
*/
public void analyseCode(ClassScope currentScope, FlowContext flowContext, FlowInfo flowInfo) {
if (this.ignoreFurtherInvestigation)
return;
try {
if ((flowInfo.tagBits & FlowInfo.UNREACHABLE_OR_DEAD) == 0) {
this.bits |= ASTNode.IsReachable;
LocalTypeBinding localType = (LocalTypeBinding) this.binding;
localType.setConstantPoolName(currentScope.compilationUnitScope().computeConstantPoolName(localType));
}
manageEnclosingInstanceAccessIfNecessary(currentScope, flowInfo);
updateMaxFieldCount(); // propagate down the max field count
internalAnalyseCode(flowContext, flowInfo);
} catch (AbortType e) {
this.ignoreFurtherInvestigation = true;
}
}
/**
* Flow analysis for a package member type
*
*/
public void analyseCode(CompilationUnitScope unitScope) {
if (this.ignoreFurtherInvestigation)
return;
try {
internalAnalyseCode(null, FlowInfo.initial(this.maxFieldCount));
} catch (AbortType e) {
this.ignoreFurtherInvestigation = true;
}
}
/**
* Check for constructor vs. method with no return type.
* Answers true if at least one constructor is defined
*/
public boolean checkConstructors(Parser parser) {
//if a constructor has not the name of the type,
//convert it into a method with 'null' as its return type
boolean hasConstructor = false;
if (this.methods != null) {
for (int i = this.methods.length; --i >= 0;) {
AbstractMethodDeclaration am;
if ((am = this.methods[i]).isConstructor()) {
if (!CharOperation.equals(am.selector, this.name)) {
// the constructor was in fact a method with no return type
// unless an explicit constructor call was supplied
ConstructorDeclaration c = (ConstructorDeclaration) am;
if (c.constructorCall == null || c.constructorCall.isImplicitSuper()) { //changed to a method
MethodDeclaration m = parser.convertToMethodDeclaration(c, this.compilationResult);
this.methods[i] = m;
}
} else {
switch (kind(this.modifiers)) {
case TypeDeclaration.INTERFACE_DECL :
// report the problem and continue the parsing
parser.problemReporter().interfaceCannotHaveConstructors((ConstructorDeclaration) am);
break;
case TypeDeclaration.ANNOTATION_TYPE_DECL :
// report the problem and continue the parsing
parser.problemReporter().annotationTypeDeclarationCannotHaveConstructor((ConstructorDeclaration) am);
break;
}
hasConstructor = true;
}
}
}
}
return hasConstructor;
}
public CompilationResult compilationResult() {
return this.compilationResult;
}
public ConstructorDeclaration createDefaultConstructor( boolean needExplicitConstructorCall, boolean needToInsert) {
//Add to method'set, the default constuctor that just recall the
//super constructor with no arguments
//The arguments' type will be positionned by the TC so just use
//the default int instead of just null (consistency purpose)
//the constructor
ConstructorDeclaration constructor = new ConstructorDeclaration(this.compilationResult);
constructor.bits |= ASTNode.IsDefaultConstructor;
constructor.selector = this.name;
constructor.modifiers = this.modifiers & ExtraCompilerModifiers.AccVisibilityMASK;
//if you change this setting, please update the
//SourceIndexer2.buildTypeDeclaration(TypeDeclaration,char[]) method
constructor.declarationSourceStart = constructor.sourceStart = this.sourceStart;
constructor.declarationSourceEnd =
constructor.sourceEnd = constructor.bodyEnd = this.sourceEnd;
//the super call inside the constructor
if (needExplicitConstructorCall) {
constructor.constructorCall = SuperReference.implicitSuperConstructorCall();
constructor.constructorCall.sourceStart = this.sourceStart;
constructor.constructorCall.sourceEnd = this.sourceEnd;
}
//adding the constructor in the methods list: rank is not critical since bindings will be sorted
if (needToInsert) {
if (this.methods == null) {
this.methods = new AbstractMethodDeclaration[] { constructor };
} else {
AbstractMethodDeclaration[] newMethods;
System.arraycopy(
this.methods,
0,
newMethods = new AbstractMethodDeclaration[this.methods.length + 1],
1,
this.methods.length);
newMethods[0] = constructor;
this.methods = newMethods;
}
}
return constructor;
}
// anonymous type constructor creation: rank is important since bindings already got sorted
public MethodBinding createDefaultConstructorWithBinding(MethodBinding inheritedConstructorBinding, boolean eraseThrownExceptions) {
//Add to method'set, the default constuctor that just recall the
//super constructor with the same arguments
String baseName = "$anonymous"; //$NON-NLS-1$
TypeBinding[] argumentTypes = inheritedConstructorBinding.parameters;
int argumentsLength = argumentTypes.length;
//the constructor
ConstructorDeclaration constructor = new ConstructorDeclaration(this.compilationResult);
constructor.selector = new char[] { 'x' }; //no maining
constructor.sourceStart = this.sourceStart;
constructor.sourceEnd = this.sourceEnd;
int newModifiers = this.modifiers & ExtraCompilerModifiers.AccVisibilityMASK;
if (inheritedConstructorBinding.isVarargs()) {
newModifiers |= ClassFileConstants.AccVarargs;
}
constructor.modifiers = newModifiers;
constructor.bits |= ASTNode.IsDefaultConstructor;
if (argumentsLength > 0) {
Argument[] arguments = (constructor.arguments = new Argument[argumentsLength]);
for (int i = argumentsLength; --i >= 0;) {
arguments[i] = new Argument((baseName + i).toCharArray(), 0L, null /*type ref*/, ClassFileConstants.AccDefault);
}
}
//the super call inside the constructor
constructor.constructorCall = SuperReference.implicitSuperConstructorCall();
constructor.constructorCall.sourceStart = this.sourceStart;
constructor.constructorCall.sourceEnd = this.sourceEnd;
if (argumentsLength > 0) {
Expression[] args;
args = constructor.constructorCall.arguments = new Expression[argumentsLength];
for (int i = argumentsLength; --i >= 0;) {
args[i] = new SingleNameReference((baseName + i).toCharArray(), 0L);
}
}
//adding the constructor in the methods list
if (this.methods == null) {
this.methods = new AbstractMethodDeclaration[] { constructor };
} else {
AbstractMethodDeclaration[] newMethods;
System.arraycopy(this.methods, 0, newMethods = new AbstractMethodDeclaration[this.methods.length + 1], 1, this.methods.length);
newMethods[0] = constructor;
this.methods = newMethods;
}
//============BINDING UPDATE==========================
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=277643, align with javac on JLS 15.12.2.6
ReferenceBinding[] thrownExceptions = eraseThrownExceptions
? this.scope.environment().convertToRawTypes(inheritedConstructorBinding.thrownExceptions, true, true)
: inheritedConstructorBinding.thrownExceptions;
SourceTypeBinding sourceType = this.binding;
constructor.binding = new MethodBinding(
constructor.modifiers, //methodDeclaration
argumentsLength == 0 ? Binding.NO_PARAMETERS : argumentTypes, //arguments bindings
thrownExceptions, //exceptions
sourceType); //declaringClass
constructor.binding.tagBits |= (inheritedConstructorBinding.tagBits & TagBits.HasMissingType);
constructor.binding.modifiers |= ExtraCompilerModifiers.AccIsDefaultConstructor;
if (inheritedConstructorBinding.parameterNonNullness != null // this implies that annotation based null analysis is enabled
&& argumentsLength > 0)
{
// copy nullness info from inherited constructor to the new constructor:
int len = inheritedConstructorBinding.parameterNonNullness.length;
System.arraycopy(inheritedConstructorBinding.parameterNonNullness, 0,
constructor.binding.parameterNonNullness = new Boolean[len], 0, len);
}
// TODO(stephan): do argument types already carry sufficient info about type annotations?
constructor.scope = new MethodScope(this.scope, constructor, true);
constructor.bindArguments();
constructor.constructorCall.resolve(constructor.scope);
MethodBinding[] methodBindings = sourceType.methods(); // trigger sorting
int length;
System.arraycopy(methodBindings, 0, methodBindings = new MethodBinding[(length = methodBindings.length) + 1], 1, length);
methodBindings[0] = constructor.binding;
if (++length > 1)
ReferenceBinding.sortMethods(methodBindings, 0, length); // need to resort, since could be valid methods ahead (140643) - DOM needs eager sorting
sourceType.setMethods(methodBindings);
//===================================================
return constructor.binding;
}
/**
* Find the matching parse node, answers null if nothing found
*/
public FieldDeclaration declarationOf(FieldBinding fieldBinding) {
if (fieldBinding != null && this.fields != null) {
for (int i = 0, max = this.fields.length; i < max; i++) {
FieldDeclaration fieldDecl;
if ((fieldDecl = this.fields[i]).binding == fieldBinding)
return fieldDecl;
}
}
return null;
}
/**
* Find the matching parse node, answers null if nothing found
*/
public TypeDeclaration declarationOf(MemberTypeBinding memberTypeBinding) {
if (memberTypeBinding != null && this.memberTypes != null) {
for (int i = 0, max = this.memberTypes.length; i < max; i++) {
TypeDeclaration memberTypeDecl;
if (TypeBinding.equalsEquals((memberTypeDecl = this.memberTypes[i]).binding, memberTypeBinding))
return memberTypeDecl;
}
}
return null;
}
/**
* Find the matching parse node, answers null if nothing found
*/
public AbstractMethodDeclaration declarationOf(MethodBinding methodBinding) {
if (methodBinding != null && this.methods != null) {
for (int i = 0, max = this.methods.length; i < max; i++) {
AbstractMethodDeclaration methodDecl;
if ((methodDecl = this.methods[i]).binding == methodBinding)
return methodDecl;
}
}
return null;
}
/**
* Finds the matching type amoung this type's member types.
* Returns null if no type with this name is found.
* The type name is a compound name relative to this type
* e.g. if this type is X and we're looking for Y.X.A.B
* then a type name would be {X, A, B}
*/
public TypeDeclaration declarationOfType(char[][] typeName) {
int typeNameLength = typeName.length;
if (typeNameLength < 1 || !CharOperation.equals(typeName[0], this.name)) {
return null;
}
if (typeNameLength == 1) {
return this;
}
char[][] subTypeName = new char[typeNameLength - 1][];
System.arraycopy(typeName, 1, subTypeName, 0, typeNameLength - 1);
for (int i = 0; i < this.memberTypes.length; i++) {
TypeDeclaration typeDecl = this.memberTypes[i].declarationOfType(subTypeName);
if (typeDecl != null) {
return typeDecl;
}
}
return null;
}
public CompilationUnitDeclaration getCompilationUnitDeclaration() {
if (this.scope != null) {
return this.scope.compilationUnitScope().referenceContext;
}
return null;
}
/**
* Generic bytecode generation for type
*/
public void generateCode(ClassFile enclosingClassFile) {
if ((this.bits & ASTNode.HasBeenGenerated) != 0)
return;
this.bits |= ASTNode.HasBeenGenerated;
if (this.ignoreFurtherInvestigation) {
if (this.binding == null)
return;
ClassFile.createProblemType(
this,
this.scope.referenceCompilationUnit().compilationResult);
return;
}
try {
// create the result for a compiled type
ClassFile classFile = ClassFile.getNewInstance(this.binding);
classFile.initialize(this.binding, enclosingClassFile, false);
if (this.binding.isMemberType()) {
classFile.recordInnerClasses(this.binding);
} else if (this.binding.isLocalType()) {
enclosingClassFile.recordInnerClasses(this.binding);
classFile.recordInnerClasses(this.binding);
}
TypeVariableBinding[] typeVariables = this.binding.typeVariables();
for (int i = 0, max = typeVariables.length; i < max; i++) {
TypeVariableBinding typeVariableBinding = typeVariables[i];
if ((typeVariableBinding.tagBits & TagBits.ContainsNestedTypeReferences) != 0) {
Util.recordNestedType(classFile, typeVariableBinding);
}
}
// generate all fiels
classFile.addFieldInfos();
if (this.memberTypes != null) {
for (int i = 0, max = this.memberTypes.length; i < max; i++) {
TypeDeclaration memberType = this.memberTypes[i];
classFile.recordInnerClasses(memberType.binding);
memberType.generateCode(this.scope, classFile);
}
}
// generate all methods
classFile.setForMethodInfos();
if (this.methods != null) {
for (int i = 0, max = this.methods.length; i < max; i++) {
this.methods[i].generateCode(this.scope, classFile);
}
}
// generate all synthetic and abstract methods
classFile.addSpecialMethods();
if (this.ignoreFurtherInvestigation) { // trigger problem type generation for code gen errors
throw new AbortType(this.scope.referenceCompilationUnit().compilationResult, null);
}
// finalize the compiled type result
classFile.addAttributes();
this.scope.referenceCompilationUnit().compilationResult.record(
this.binding.constantPoolName(),
classFile);
} catch (AbortType e) {
if (this.binding == null)
return;
ClassFile.createProblemType(
this,
this.scope.referenceCompilationUnit().compilationResult);
}
}
/**
* Bytecode generation for a local inner type (API as a normal statement code gen)
*/
public void generateCode(BlockScope blockScope, CodeStream codeStream) {
if ((this.bits & ASTNode.IsReachable) == 0) {
return;
}
if ((this.bits & ASTNode.HasBeenGenerated) != 0) return;
int pc = codeStream.position;
if (this.binding != null) {
SyntheticArgumentBinding[] enclosingInstances = ((NestedTypeBinding) this.binding).syntheticEnclosingInstances();
for (int i = 0, slotSize = 0, count = enclosingInstances == null ? 0 : enclosingInstances.length; i < count; i++){
SyntheticArgumentBinding enclosingInstance = enclosingInstances[i];
enclosingInstance.resolvedPosition = ++slotSize; // shift by 1 to leave room for aload0==this
if (slotSize > 0xFF) { // no more than 255 words of arguments
blockScope.problemReporter().noMoreAvailableSpaceForArgument(enclosingInstance, blockScope.referenceType());
}
}
}
generateCode(codeStream.classFile);
codeStream.recordPositionsFrom(pc, this.sourceStart);
}
/**
* Bytecode generation for a member inner type
*/
public void generateCode(ClassScope classScope, ClassFile enclosingClassFile) {
if ((this.bits & ASTNode.HasBeenGenerated) != 0) return;
if (this.binding != null) {
SyntheticArgumentBinding[] enclosingInstances = ((NestedTypeBinding) this.binding).syntheticEnclosingInstances();
for (int i = 0, slotSize = 0, count = enclosingInstances == null ? 0 : enclosingInstances.length; i < count; i++){
SyntheticArgumentBinding enclosingInstance = enclosingInstances[i];
enclosingInstance.resolvedPosition = ++slotSize; // shift by 1 to leave room for aload0==this
if (slotSize > 0xFF) { // no more than 255 words of arguments
classScope.problemReporter().noMoreAvailableSpaceForArgument(enclosingInstance, classScope.referenceType());
}
}
}
generateCode(enclosingClassFile);
}
/**
* Bytecode generation for a package member
*/
public void generateCode(CompilationUnitScope unitScope) {
generateCode((ClassFile) null);
}
public boolean hasErrors() {
return this.ignoreFurtherInvestigation;
}
/**
* Common flow analysis for all types
*/
private void internalAnalyseCode(FlowContext flowContext, FlowInfo flowInfo) {
if (!this.binding.isUsed() && this.binding.isOrEnclosedByPrivateType()) {
if (!this.scope.referenceCompilationUnit().compilationResult.hasSyntaxError) {
this.scope.problemReporter().unusedPrivateType(this);
}
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=385780
if (this.typeParameters != null &&
!this.scope.referenceCompilationUnit().compilationResult.hasSyntaxError) {
for (int i = 0, length = this.typeParameters.length; i < length; ++i) {
TypeParameter typeParameter = this.typeParameters[i];
if ((typeParameter.binding.modifiers & ExtraCompilerModifiers.AccLocallyUsed) == 0) {
this.scope.problemReporter().unusedTypeParameter(typeParameter);
}
}
}
// for local classes we use the flowContext as our parent, but never use an initialization context for this purpose
// see Bug 360328 - [compiler][null] detect null problems in nested code (local class inside a loop)
FlowContext parentContext = (flowContext instanceof InitializationFlowContext) ? null : flowContext;
InitializationFlowContext initializerContext = new InitializationFlowContext(parentContext, this, flowInfo, flowContext, this.initializerScope);
// no static initializer in local classes, thus no need to set parent:
InitializationFlowContext staticInitializerContext = new InitializationFlowContext(null, this, flowInfo, flowContext, this.staticInitializerScope);
FlowInfo nonStaticFieldInfo = flowInfo.unconditionalFieldLessCopy();
FlowInfo staticFieldInfo = flowInfo.unconditionalFieldLessCopy();
if (this.fields != null) {
for (int i = 0, count = this.fields.length; i < count; i++) {
FieldDeclaration field = this.fields[i];
if (field.isStatic()) {
if ((staticFieldInfo.tagBits & FlowInfo.UNREACHABLE_OR_DEAD) != 0)
field.bits &= ~ASTNode.IsReachable;
/*if (field.isField()){
staticInitializerContext.handledExceptions = NoExceptions; // no exception is allowed jls8.3.2
} else {*/
staticInitializerContext.handledExceptions = Binding.ANY_EXCEPTION; // tolerate them all, and record them
/*}*/
staticFieldInfo = field.analyseCode(this.staticInitializerScope, staticInitializerContext, staticFieldInfo);
// in case the initializer is not reachable, use a reinitialized flowInfo and enter a fake reachable
// branch, since the previous initializer already got the blame.
if (staticFieldInfo == FlowInfo.DEAD_END) {
this.staticInitializerScope.problemReporter().initializerMustCompleteNormally(field);
staticFieldInfo = FlowInfo.initial(this.maxFieldCount).setReachMode(FlowInfo.UNREACHABLE_OR_DEAD);
}
} else {
if ((nonStaticFieldInfo.tagBits & FlowInfo.UNREACHABLE_OR_DEAD) != 0)
field.bits &= ~ASTNode.IsReachable;
/*if (field.isField()){
initializerContext.handledExceptions = NoExceptions; // no exception is allowed jls8.3.2
} else {*/
initializerContext.handledExceptions = Binding.ANY_EXCEPTION; // tolerate them all, and record them
/*}*/
nonStaticFieldInfo = field.analyseCode(this.initializerScope, initializerContext, nonStaticFieldInfo);
// in case the initializer is not reachable, use a reinitialized flowInfo and enter a fake reachable
// branch, since the previous initializer already got the blame.
if (nonStaticFieldInfo == FlowInfo.DEAD_END) {
this.initializerScope.problemReporter().initializerMustCompleteNormally(field);
nonStaticFieldInfo = FlowInfo.initial(this.maxFieldCount).setReachMode(FlowInfo.UNREACHABLE_OR_DEAD);
}
}
}
}
if (this.memberTypes != null) {
for (int i = 0, count = this.memberTypes.length; i < count; i++) {
if (flowContext != null){ // local type
this.memberTypes[i].analyseCode(this.scope, flowContext, nonStaticFieldInfo.copy().setReachMode(flowInfo.reachMode())); // reset reach mode in case initializers did abrupt completely
} else {
this.memberTypes[i].analyseCode(this.scope);
}
}
}
if (this.methods != null) {
UnconditionalFlowInfo outerInfo = flowInfo.unconditionalFieldLessCopy();
FlowInfo constructorInfo = nonStaticFieldInfo.unconditionalInits().discardNonFieldInitializations().addInitializationsFrom(outerInfo);
for (int i = 0, count = this.methods.length; i < count; i++) {
AbstractMethodDeclaration method = this.methods[i];
if (method.ignoreFurtherInvestigation)
continue;
if (method.isInitializationMethod()) {
// pass down the appropriate initializerContext:
if (method.isStatic()) { // <clinit>
((Clinit)method).analyseCode(
this.scope,
staticInitializerContext,
staticFieldInfo.unconditionalInits().discardNonFieldInitializations().addInitializationsFrom(outerInfo));
} else { // constructor
((ConstructorDeclaration)method).analyseCode(this.scope, initializerContext, constructorInfo.copy(), flowInfo.reachMode());
}
} else { // regular method
// pass down the parentContext (NOT an initializer context, see above):
((MethodDeclaration)method).analyseCode(this.scope, parentContext, flowInfo.copy());
}
}
}
// enable enum support ?
if (this.binding.isEnum() && !this.binding.isAnonymousType()) {
this.enumValuesSyntheticfield = this.binding.addSyntheticFieldForEnumValues();
}
}
public final static int kind(int flags) {
switch (flags & (ClassFileConstants.AccInterface|ClassFileConstants.AccAnnotation|ClassFileConstants.AccEnum)) {
case ClassFileConstants.AccInterface :
return TypeDeclaration.INTERFACE_DECL;
case ClassFileConstants.AccInterface|ClassFileConstants.AccAnnotation :
return TypeDeclaration.ANNOTATION_TYPE_DECL;
case ClassFileConstants.AccEnum :
return TypeDeclaration.ENUM_DECL;
default :
return TypeDeclaration.CLASS_DECL;
}
}
/*
* Access emulation for a local type
* force to emulation of access to direct enclosing instance.
* By using the initializer scope, we actually only request an argument emulation, the
* field is not added until actually used. However we will force allocations to be qualified
* with an enclosing instance.
* 15.9.2
*/
public void manageEnclosingInstanceAccessIfNecessary(BlockScope currentScope, FlowInfo flowInfo) {
if ((flowInfo.tagBits & FlowInfo.UNREACHABLE_OR_DEAD) != 0) return;
NestedTypeBinding nestedType = (NestedTypeBinding) this.binding;
MethodScope methodScope = currentScope.methodScope();
if (!methodScope.isStatic && !methodScope.isConstructorCall){
nestedType.addSyntheticArgumentAndField(nestedType.enclosingType());
}
// add superclass enclosing instance arg for anonymous types (if necessary)
if (nestedType.isAnonymousType()) {
ReferenceBinding superclassBinding = (ReferenceBinding)nestedType.superclass.erasure();
if (superclassBinding.enclosingType() != null && !superclassBinding.isStatic()) {
if (!superclassBinding.isLocalType()
|| ((NestedTypeBinding)superclassBinding).getSyntheticField(superclassBinding.enclosingType(), true) != null){
nestedType.addSyntheticArgument(superclassBinding.enclosingType());
}
}
// From 1.5 on, provide access to enclosing instance synthetic constructor argument when declared inside constructor call
// only for direct anonymous type
//public class X {
// void foo() {}
// class M {
// M(Object o) {}
// M() { this(new Object() { void baz() { foo(); }}); } // access to #foo() indirects through constructor synthetic arg: val$this$0
// }
//}
if (!methodScope.isStatic && methodScope.isConstructorCall && currentScope.compilerOptions().complianceLevel >= ClassFileConstants.JDK1_5) {
ReferenceBinding enclosing = nestedType.enclosingType();
if (enclosing.isNestedType()) {
NestedTypeBinding nestedEnclosing = (NestedTypeBinding)enclosing;
// if (nestedEnclosing.findSuperTypeErasingTo(nestedEnclosing.enclosingType()) == null) { // only if not inheriting
SyntheticArgumentBinding syntheticEnclosingInstanceArgument = nestedEnclosing.getSyntheticArgument(nestedEnclosing.enclosingType(), true, false);
if (syntheticEnclosingInstanceArgument != null) {
nestedType.addSyntheticArgumentAndField(syntheticEnclosingInstanceArgument);
}
}
// }
}
}
}
/**
* Access emulation for a local member type
* force to emulation of access to direct enclosing instance.
* By using the initializer scope, we actually only request an argument emulation, the
* field is not added until actually used. However we will force allocations to be qualified
* with an enclosing instance.
*
* Local member cannot be static.
*/
public void manageEnclosingInstanceAccessIfNecessary(ClassScope currentScope, FlowInfo flowInfo) {
if ((flowInfo.tagBits & FlowInfo.UNREACHABLE_OR_DEAD) == 0) {
NestedTypeBinding nestedType = (NestedTypeBinding) this.binding;
nestedType.addSyntheticArgumentAndField(this.binding.enclosingType());
}
}
/**
* A <clinit> will be requested as soon as static fields or assertions are present. It will be eliminated during
* classfile creation if no bytecode was actually produced based on some optimizations/compiler settings.
*/
public final boolean needClassInitMethod() {
// always need a <clinit> when assertions are present
if ((this.bits & ASTNode.ContainsAssertion) != 0)
return true;
switch (kind(this.modifiers)) {
case TypeDeclaration.INTERFACE_DECL:
case TypeDeclaration.ANNOTATION_TYPE_DECL:
return this.fields != null; // fields are implicitly statics
case TypeDeclaration.ENUM_DECL:
return true; // even if no enum constants, need to set $VALUES array
}
if (this.fields != null) {
for (int i = this.fields.length; --i >= 0;) {
FieldDeclaration field = this.fields[i];
//need to test the modifier directly while there is no binding yet
if ((field.modifiers & ClassFileConstants.AccStatic) != 0)
return true; // TODO (philippe) shouldn't it check whether field is initializer or has some initial value ?
}
}
return false;
}
public void parseMethods(Parser parser, CompilationUnitDeclaration unit) {
//connect method bodies
if (unit.ignoreMethodBodies)
return;
//members
if (this.memberTypes != null) {
int length = this.memberTypes.length;
for (int i = 0; i < length; i++) {
TypeDeclaration typeDeclaration = this.memberTypes[i];
typeDeclaration.parseMethods(parser, unit);
this.bits |= (typeDeclaration.bits & ASTNode.HasSyntaxErrors);
}
}
//methods
if (this.methods != null) {
int length = this.methods.length;
for (int i = 0; i < length; i++) {
AbstractMethodDeclaration abstractMethodDeclaration = this.methods[i];
abstractMethodDeclaration.parseStatements(parser, unit);
this.bits |= (abstractMethodDeclaration.bits & ASTNode.HasSyntaxErrors);
}
}
//initializers
if (this.fields != null) {
int length = this.fields.length;
for (int i = 0; i < length; i++) {
final FieldDeclaration fieldDeclaration = this.fields[i];
switch(fieldDeclaration.getKind()) {
case AbstractVariableDeclaration.INITIALIZER:
((Initializer) fieldDeclaration).parseStatements(parser, this, unit);
this.bits |= (fieldDeclaration.bits & ASTNode.HasSyntaxErrors);
break;
}
}
}
}
public StringBuffer print(int indent, StringBuffer output) {
if (this.javadoc != null) {
this.javadoc.print(indent, output);
}
if ((this.bits & ASTNode.IsAnonymousType) == 0) {
printIndent(indent, output);
printHeader(0, output);
}
return printBody(indent, output);
}
public StringBuffer printBody(int indent, StringBuffer output) {
output.append(" {"); //$NON-NLS-1$
if (this.memberTypes != null) {
for (int i = 0; i < this.memberTypes.length; i++) {
if (this.memberTypes[i] != null) {
output.append('\n');
this.memberTypes[i].print(indent + 1, output);
}
}
}
if (this.fields != null) {
for (int fieldI = 0; fieldI < this.fields.length; fieldI++) {
if (this.fields[fieldI] != null) {
output.append('\n');
this.fields[fieldI].print(indent + 1, output);
}
}
}
if (this.methods != null) {
for (int i = 0; i < this.methods.length; i++) {
if (this.methods[i] != null) {
output.append('\n');
this.methods[i].print(indent + 1, output);
}
}
}
output.append('\n');
return printIndent(indent, output).append('}');
}
public StringBuffer printHeader(int indent, StringBuffer output) {
printModifiers(this.modifiers, output);
if (this.annotations != null) {
printAnnotations(this.annotations, output);
output.append(' ');
}
switch (kind(this.modifiers)) {
case TypeDeclaration.CLASS_DECL :
output.append("class "); //$NON-NLS-1$
break;
case TypeDeclaration.INTERFACE_DECL :
output.append("interface "); //$NON-NLS-1$
break;
case TypeDeclaration.ENUM_DECL :
output.append("enum "); //$NON-NLS-1$
break;
case TypeDeclaration.ANNOTATION_TYPE_DECL :
output.append("@interface "); //$NON-NLS-1$
break;
}
output.append(this.name);
if (this.typeParameters != null) {
output.append("<");//$NON-NLS-1$
for (int i = 0; i < this.typeParameters.length; i++) {
if (i > 0) output.append( ", "); //$NON-NLS-1$
this.typeParameters[i].print(0, output);
}
output.append(">");//$NON-NLS-1$
}
if (this.superclass != null) {
output.append(" extends "); //$NON-NLS-1$
this.superclass.print(0, output);
}
if (this.superInterfaces != null && this.superInterfaces.length > 0) {
switch (kind(this.modifiers)) {
case TypeDeclaration.CLASS_DECL :
case TypeDeclaration.ENUM_DECL :
output.append(" implements "); //$NON-NLS-1$
break;
case TypeDeclaration.INTERFACE_DECL :
case TypeDeclaration.ANNOTATION_TYPE_DECL :
output.append(" extends "); //$NON-NLS-1$
break;
}
for (int i = 0; i < this.superInterfaces.length; i++) {
if (i > 0) output.append( ", "); //$NON-NLS-1$
this.superInterfaces[i].print(0, output);
}
}
return output;
}
public StringBuffer printStatement(int tab, StringBuffer output) {
return print(tab, output);
}
public void resolve() {
SourceTypeBinding sourceType = this.binding;
if (sourceType == null) {
this.ignoreFurtherInvestigation = true;
return;
}
try {
boolean old = this.staticInitializerScope.insideTypeAnnotation;
try {
this.staticInitializerScope.insideTypeAnnotation = true;
resolveAnnotations(this.staticInitializerScope, this.annotations, sourceType);
} finally {
this.staticInitializerScope.insideTypeAnnotation = old;
}
// check @Deprecated annotation
long annotationTagBits = sourceType.getAnnotationTagBits();
if ((annotationTagBits & TagBits.AnnotationDeprecated) == 0
&& (sourceType.modifiers & ClassFileConstants.AccDeprecated) != 0
&& this.scope.compilerOptions().sourceLevel >= ClassFileConstants.JDK1_5) {
this.scope.problemReporter().missingDeprecatedAnnotationForType(this);
}
if ((annotationTagBits & TagBits.AnnotationFunctionalInterface) != 0) {
if(!this.binding.isFunctionalInterface(this.scope)) {
this.scope.problemReporter().notAFunctionalInterface(this);
}
}
if (this.scope.compilerOptions().sourceLevel >= ClassFileConstants.JDK1_8) {
if ((annotationTagBits & TagBits.AnnotationNullMASK) != 0) {
for (int i = 0; i < this.annotations.length; i++) {
ReferenceBinding annotationType = this.annotations[i].getCompilerAnnotation().getAnnotationType();
if (annotationType != null) {
if (annotationType.id == TypeIds.T_ConfiguredAnnotationNonNull
|| annotationType.id == TypeIds.T_ConfiguredAnnotationNullable)
this.scope.problemReporter().nullAnnotationUnsupportedLocation(this.annotations[i]);
sourceType.tagBits &= ~TagBits.AnnotationNullMASK;
}
}
}
}
if ((this.bits & ASTNode.UndocumentedEmptyBlock) != 0) {
this.scope.problemReporter().undocumentedEmptyBlock(this.bodyStart-1, this.bodyEnd);
}
boolean needSerialVersion =
this.scope.compilerOptions().getSeverity(CompilerOptions.MissingSerialVersion) != ProblemSeverities.Ignore
&& sourceType.isClass()
&& sourceType.findSuperTypeOriginatingFrom(TypeIds.T_JavaIoExternalizable, false /*Externalizable is not a class*/) == null
&& sourceType.findSuperTypeOriginatingFrom(TypeIds.T_JavaIoSerializable, false /*Serializable is not a class*/) != null;
if (needSerialVersion) {
// if Object writeReplace() throws java.io.ObjectStreamException is present, then no serialVersionUID is needed
// see https://bugs.eclipse.org/bugs/show_bug.cgi?id=101476
CompilationUnitScope compilationUnitScope = this.scope.compilationUnitScope();
MethodBinding methodBinding = sourceType.getExactMethod(TypeConstants.WRITEREPLACE, Binding.NO_TYPES, compilationUnitScope);
ReferenceBinding[] throwsExceptions;
needSerialVersion =
methodBinding == null
|| !methodBinding.isValidBinding()
|| methodBinding.returnType.id != TypeIds.T_JavaLangObject
|| (throwsExceptions = methodBinding.thrownExceptions).length != 1
|| throwsExceptions[0].id != TypeIds.T_JavaIoObjectStreamException;
if (needSerialVersion) {
// check the presence of an implementation of the methods
// private void writeObject(java.io.ObjectOutputStream out) throws IOException
// private void readObject(java.io.ObjectInputStream out) throws IOException
boolean hasWriteObjectMethod = false;
boolean hasReadObjectMethod = false;
TypeBinding argumentTypeBinding = this.scope.getType(TypeConstants.JAVA_IO_OBJECTOUTPUTSTREAM, 3);
if (argumentTypeBinding.isValidBinding()) {
methodBinding = sourceType.getExactMethod(TypeConstants.WRITEOBJECT, new TypeBinding[] { argumentTypeBinding }, compilationUnitScope);
hasWriteObjectMethod = methodBinding != null
&& methodBinding.isValidBinding()
&& methodBinding.modifiers == ClassFileConstants.AccPrivate
&& methodBinding.returnType == TypeBinding.VOID
&& (throwsExceptions = methodBinding.thrownExceptions).length == 1
&& throwsExceptions[0].id == TypeIds.T_JavaIoException;
}
argumentTypeBinding = this.scope.getType(TypeConstants.JAVA_IO_OBJECTINPUTSTREAM, 3);
if (argumentTypeBinding.isValidBinding()) {
methodBinding = sourceType.getExactMethod(TypeConstants.READOBJECT, new TypeBinding[] { argumentTypeBinding }, compilationUnitScope);
hasReadObjectMethod = methodBinding != null
&& methodBinding.isValidBinding()
&& methodBinding.modifiers == ClassFileConstants.AccPrivate
&& methodBinding.returnType == TypeBinding.VOID
&& (throwsExceptions = methodBinding.thrownExceptions).length == 1
&& throwsExceptions[0].id == TypeIds.T_JavaIoException;
}
needSerialVersion = !hasWriteObjectMethod || !hasReadObjectMethod;
}
}
// generics (and non static generic members) cannot extend Throwable
if (sourceType.findSuperTypeOriginatingFrom(TypeIds.T_JavaLangThrowable, true) != null) {
ReferenceBinding current = sourceType;
checkEnclosedInGeneric : do {
if (current.isGenericType()) {
this.scope.problemReporter().genericTypeCannotExtendThrowable(this);
break checkEnclosedInGeneric;
}
if (current.isStatic()) break checkEnclosedInGeneric;
if (current.isLocalType()) {
NestedTypeBinding nestedType = (NestedTypeBinding) current.erasure();
if (nestedType.scope.methodScope().isStatic) break checkEnclosedInGeneric;
}
} while ((current = current.enclosingType()) != null);
}
// this.maxFieldCount might already be set
int localMaxFieldCount = 0;
int lastVisibleFieldID = -1;
boolean hasEnumConstants = false;
FieldDeclaration[] enumConstantsWithoutBody = null;
if (this.memberTypes != null) {
for (int i = 0, count = this.memberTypes.length; i < count; i++) {
this.memberTypes[i].resolve(this.scope);
}
}
if (this.fields != null) {
for (int i = 0, count = this.fields.length; i < count; i++) {
FieldDeclaration field = this.fields[i];
switch(field.getKind()) {
case AbstractVariableDeclaration.ENUM_CONSTANT:
hasEnumConstants = true;
if (!(field.initialization instanceof QualifiedAllocationExpression)) {
if (enumConstantsWithoutBody == null)
enumConstantsWithoutBody = new FieldDeclaration[count];
enumConstantsWithoutBody[i] = field;
}
//$FALL-THROUGH$
case AbstractVariableDeclaration.FIELD:
FieldBinding fieldBinding = field.binding;
if (fieldBinding == null) {
// still discover secondary errors
if (field.initialization != null) field.initialization.resolve(field.isStatic() ? this.staticInitializerScope : this.initializerScope);
this.ignoreFurtherInvestigation = true;
continue;
}
if (needSerialVersion
&& ((fieldBinding.modifiers & (ClassFileConstants.AccStatic | ClassFileConstants.AccFinal)) == (ClassFileConstants.AccStatic | ClassFileConstants.AccFinal))
&& CharOperation.equals(TypeConstants.SERIALVERSIONUID, fieldBinding.name)
&& TypeBinding.equalsEquals(TypeBinding.LONG, fieldBinding.type)) {
needSerialVersion = false;
}
localMaxFieldCount++;
lastVisibleFieldID = field.binding.id;
break;
case AbstractVariableDeclaration.INITIALIZER:
((Initializer) field).lastVisibleFieldID = lastVisibleFieldID + 1;
break;
}
field.resolve(field.isStatic() ? this.staticInitializerScope : this.initializerScope);
}
}
if (this.maxFieldCount < localMaxFieldCount) {
this.maxFieldCount = localMaxFieldCount;
}
if (needSerialVersion) {
//check that the current type doesn't extend javax.rmi.CORBA.Stub
TypeBinding javaxRmiCorbaStub = this.scope.getType(TypeConstants.JAVAX_RMI_CORBA_STUB, 4);
if (javaxRmiCorbaStub.isValidBinding()) {
ReferenceBinding superclassBinding = this.binding.superclass;
loop: while (superclassBinding != null) {
if (TypeBinding.equalsEquals(superclassBinding, javaxRmiCorbaStub)) {
needSerialVersion = false;
break loop;
}
superclassBinding = superclassBinding.superclass();
}
}
if (needSerialVersion) {
this.scope.problemReporter().missingSerialVersion(this);
}
}
// check extends/implements for annotation type
switch(kind(this.modifiers)) {
case TypeDeclaration.ANNOTATION_TYPE_DECL :
if (this.superclass != null) {
this.scope.problemReporter().annotationTypeDeclarationCannotHaveSuperclass(this);
}
if (this.superInterfaces != null) {
this.scope.problemReporter().annotationTypeDeclarationCannotHaveSuperinterfaces(this);
}
break;
case TypeDeclaration.ENUM_DECL :
// check enum abstract methods
if (this.binding.isAbstract()) {
if (!hasEnumConstants) {
for (int i = 0, count = this.methods.length; i < count; i++) {
final AbstractMethodDeclaration methodDeclaration = this.methods[i];
if (methodDeclaration.isAbstract() && methodDeclaration.binding != null)
this.scope.problemReporter().enumAbstractMethodMustBeImplemented(methodDeclaration);
}
} else if (enumConstantsWithoutBody != null) {
for (int i = 0, count = this.methods.length; i < count; i++) {
final AbstractMethodDeclaration methodDeclaration = this.methods[i];
if (methodDeclaration.isAbstract() && methodDeclaration.binding != null) {
for (int f = 0, l = enumConstantsWithoutBody.length; f < l; f++)
if (enumConstantsWithoutBody[f] != null)
this.scope.problemReporter().enumConstantMustImplementAbstractMethod(methodDeclaration, enumConstantsWithoutBody[f]);
}
}
}
}
break;
}
int missingAbstractMethodslength = this.missingAbstractMethods == null ? 0 : this.missingAbstractMethods.length;
int methodsLength = this.methods == null ? 0 : this.methods.length;
if ((methodsLength + missingAbstractMethodslength) > 0xFFFF) {
this.scope.problemReporter().tooManyMethods(this);
}
if (this.methods != null) {
for (int i = 0, count = this.methods.length; i < count; i++) {
this.methods[i].resolve(this.scope);
}
}
// Resolve javadoc
if (this.javadoc != null) {
if (this.scope != null && (this.name != TypeConstants.PACKAGE_INFO_NAME)) {
// if the type is package-info, the javadoc was resolved as part of the compilation unit javadoc
this.javadoc.resolve(this.scope);
}
} else if (!sourceType.isLocalType()) {
// Set javadoc visibility
int visibility = sourceType.modifiers & ExtraCompilerModifiers.AccVisibilityMASK;
ProblemReporter reporter = this.scope.problemReporter();
int severity = reporter.computeSeverity(IProblem.JavadocMissing);
if (severity != ProblemSeverities.Ignore) {
if (this.enclosingType != null) {
visibility = Util.computeOuterMostVisibility(this.enclosingType, visibility);
}
int javadocModifiers = (this.binding.modifiers & ~ExtraCompilerModifiers.AccVisibilityMASK) | visibility;
reporter.javadocMissing(this.sourceStart, this.sourceEnd, severity, javadocModifiers);
}
}
} catch (AbortType e) {
this.ignoreFurtherInvestigation = true;
return;
}
}
/**
* Resolve a local type declaration
*/
public void resolve(BlockScope blockScope) {
// need to build its scope first and proceed with binding's creation
if ((this.bits & ASTNode.IsAnonymousType) == 0) {
// check collision scenarii
Binding existing = blockScope.getType(this.name);
if (existing instanceof ReferenceBinding
&& existing != this.binding
&& existing.isValidBinding()) {
ReferenceBinding existingType = (ReferenceBinding) existing;
if (existingType instanceof TypeVariableBinding) {
blockScope.problemReporter().typeHiding(this, (TypeVariableBinding) existingType);
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=312989, check for collision with enclosing type.
Scope outerScope = blockScope.parent;
checkOuterScope:while (outerScope != null) {
Binding existing2 = outerScope.getType(this.name);
if (existing2 instanceof TypeVariableBinding && existing2.isValidBinding()) {
TypeVariableBinding tvb = (TypeVariableBinding) existingType;
Binding declaringElement = tvb.declaringElement;
if (declaringElement instanceof ReferenceBinding
&& CharOperation.equals(((ReferenceBinding) declaringElement).sourceName(), this.name)) {
blockScope.problemReporter().typeCollidesWithEnclosingType(this);
break checkOuterScope;
}
} else if (existing2 instanceof ReferenceBinding
&& existing2.isValidBinding()
&& outerScope.isDefinedInType((ReferenceBinding) existing2)) {
blockScope.problemReporter().typeCollidesWithEnclosingType(this);
break checkOuterScope;
} else if (existing2 == null) {
break checkOuterScope;
}
outerScope = outerScope.parent;
}
} else if (existingType instanceof LocalTypeBinding
&& ((LocalTypeBinding) existingType).scope.methodScope() == blockScope.methodScope()) {
// dup in same method
blockScope.problemReporter().duplicateNestedType(this);
} else if (existingType instanceof LocalTypeBinding && blockScope.isLambdaSubscope()
&& blockScope.enclosingLambdaScope().enclosingMethodScope() == ((LocalTypeBinding) existingType).scope.methodScope()) {
blockScope.problemReporter().duplicateNestedType(this);
} else if (blockScope.isDefinedInType(existingType)) {
// collision with enclosing type
blockScope.problemReporter().typeCollidesWithEnclosingType(this);
} else if (blockScope.isDefinedInSameUnit(existingType)){ // only consider hiding inside same unit
// hiding sibling
blockScope.problemReporter().typeHiding(this, existingType);
}
}
blockScope.addLocalType(this);
}
if (this.binding != null) {
// remember local types binding for innerclass emulation propagation
blockScope.referenceCompilationUnit().record((LocalTypeBinding)this.binding);
// binding is not set if the receiver could not be created
resolve();
updateMaxFieldCount();
}
}
/**
* Resolve a member type declaration (can be a local member)
*/
public void resolve(ClassScope upperScope) {
// member scopes are already created
// request the construction of a binding if local member type
if (this.binding != null && this.binding instanceof LocalTypeBinding) {
// remember local types binding for innerclass emulation propagation
upperScope.referenceCompilationUnit().record((LocalTypeBinding)this.binding);
}
resolve();
updateMaxFieldCount();
}
/**
* Resolve a top level type declaration
*/
public void resolve(CompilationUnitScope upperScope) {
// top level : scope are already created
resolve();
updateMaxFieldCount();
}
public void tagAsHavingErrors() {
this.ignoreFurtherInvestigation = true;
}
public void tagAsHavingIgnoredMandatoryErrors(int problemId) {
// Nothing to do for this context;
}
/**
* Iteration for a package member type
*
*/
public void traverse(ASTVisitor visitor, CompilationUnitScope unitScope) {
try {
if (visitor.visit(this, unitScope)) {
if (this.javadoc != null) {
this.javadoc.traverse(visitor, this.scope);
}
if (this.annotations != null) {
int annotationsLength = this.annotations.length;
for (int i = 0; i < annotationsLength; i++)
this.annotations[i].traverse(visitor, this.staticInitializerScope);
}
if (this.superclass != null)
this.superclass.traverse(visitor, this.scope);
if (this.superInterfaces != null) {
int length = this.superInterfaces.length;
for (int i = 0; i < length; i++)
this.superInterfaces[i].traverse(visitor, this.scope);
}
if (this.typeParameters != null) {
int length = this.typeParameters.length;
for (int i = 0; i < length; i++) {
this.typeParameters[i].traverse(visitor, this.scope);
}
}
if (this.memberTypes != null) {
int length = this.memberTypes.length;
for (int i = 0; i < length; i++)
this.memberTypes[i].traverse(visitor, this.scope);
}
if (this.fields != null) {
int length = this.fields.length;
for (int i = 0; i < length; i++) {
FieldDeclaration field;
if ((field = this.fields[i]).isStatic()) {
field.traverse(visitor, this.staticInitializerScope);
} else {
field.traverse(visitor, this.initializerScope);
}
}
}
if (this.methods != null) {
int length = this.methods.length;
for (int i = 0; i < length; i++)
this.methods[i].traverse(visitor, this.scope);
}
}
visitor.endVisit(this, unitScope);
} catch (AbortType e) {
// silent abort
}
}
/**
* Iteration for a local inner type
*/
public void traverse(ASTVisitor visitor, BlockScope blockScope) {
try {
if (visitor.visit(this, blockScope)) {
if (this.javadoc != null) {
this.javadoc.traverse(visitor, this.scope);
}
if (this.annotations != null) {
int annotationsLength = this.annotations.length;
for (int i = 0; i < annotationsLength; i++)
this.annotations[i].traverse(visitor, this.staticInitializerScope);
}
if (this.superclass != null)
this.superclass.traverse(visitor, this.scope);
if (this.superInterfaces != null) {
int length = this.superInterfaces.length;
for (int i = 0; i < length; i++)
this.superInterfaces[i].traverse(visitor, this.scope);
}
if (this.typeParameters != null) {
int length = this.typeParameters.length;
for (int i = 0; i < length; i++) {
this.typeParameters[i].traverse(visitor, this.scope);
}
}
if (this.memberTypes != null) {
int length = this.memberTypes.length;
for (int i = 0; i < length; i++)
this.memberTypes[i].traverse(visitor, this.scope);
}
if (this.fields != null) {
int length = this.fields.length;
for (int i = 0; i < length; i++) {
FieldDeclaration field = this.fields[i];
if (field.isStatic() && !field.isFinal()) {
// local type cannot have static fields that are not final, https://bugs.eclipse.org/bugs/show_bug.cgi?id=244544
} else {
field.traverse(visitor, this.initializerScope);
}
}
}
if (this.methods != null) {
int length = this.methods.length;
for (int i = 0; i < length; i++)
this.methods[i].traverse(visitor, this.scope);
}
}
visitor.endVisit(this, blockScope);
} catch (AbortType e) {
// silent abort
}
}
/**
* Iteration for a member innertype
*
*/
public void traverse(ASTVisitor visitor, ClassScope classScope) {
try {
if (visitor.visit(this, classScope)) {
if (this.javadoc != null) {
this.javadoc.traverse(visitor, this.scope);
}
if (this.annotations != null) {
int annotationsLength = this.annotations.length;
for (int i = 0; i < annotationsLength; i++)
this.annotations[i].traverse(visitor, this.staticInitializerScope);
}
if (this.superclass != null)
this.superclass.traverse(visitor, this.scope);
if (this.superInterfaces != null) {
int length = this.superInterfaces.length;
for (int i = 0; i < length; i++)
this.superInterfaces[i].traverse(visitor, this.scope);
}
if (this.typeParameters != null) {
int length = this.typeParameters.length;
for (int i = 0; i < length; i++) {
this.typeParameters[i].traverse(visitor, this.scope);
}
}
if (this.memberTypes != null) {
int length = this.memberTypes.length;
for (int i = 0; i < length; i++)
this.memberTypes[i].traverse(visitor, this.scope);
}
if (this.fields != null) {
int length = this.fields.length;
for (int i = 0; i < length; i++) {
FieldDeclaration field;
if ((field = this.fields[i]).isStatic()) {
field.traverse(visitor, this.staticInitializerScope);
} else {
field.traverse(visitor, this.initializerScope);
}
}
}
if (this.methods != null) {
int length = this.methods.length;
for (int i = 0; i < length; i++)
this.methods[i].traverse(visitor, this.scope);
}
}
visitor.endVisit(this, classScope);
} catch (AbortType e) {
// silent abort
}
}
/**
* MaxFieldCount's computation is necessary so as to reserve space for
* the flow info field portions. It corresponds to the maximum amount of
* fields this class or one of its innertypes have.
*
* During name resolution, types are traversed, and the max field count is recorded
* on the outermost type. It is then propagated down during the flow analysis.
*
* This method is doing either up/down propagation.
*/
void updateMaxFieldCount() {
if (this.binding == null)
return; // error scenario
TypeDeclaration outerMostType = this.scope.outerMostClassScope().referenceType();
if (this.maxFieldCount > outerMostType.maxFieldCount) {
outerMostType.maxFieldCount = this.maxFieldCount; // up
} else {
this.maxFieldCount = outerMostType.maxFieldCount; // down
}
}
public boolean isPackageInfo() {
return CharOperation.equals(this.name, TypeConstants.PACKAGE_INFO_NAME);
}
/**
* Returns whether the type is a secondary one or not.
*/
public boolean isSecondary() {
return (this.bits & ASTNode.IsSecondaryType) != 0;
}
}