| /******************************************************************************* |
| * Copyright (c) 2000, 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 |
| * Fraunhofer FIRST - extended API and implementation |
| * Technical University Berlin - extended API and implementation |
| * Stephan Herrmann - Contributions for |
| * bug 319201 - [null] no warning when unboxing SingleNameReference causes NPE |
| * bug 349326 - [1.7] new warning for missing try-with-resources |
| * bug 186342 - [compiler][null] Using annotations for null checking |
| * bug 368546 - [compiler][resource] Avoid remaining false positives found when compiling the Eclipse SDK |
| * bug 370639 - [compiler][resource] restore the default for resource leak warnings |
| * bug 345305 - [compiler][null] Compiler misidentifies a case of "variable can only be null" |
| * bug 388996 - [compiler][resource] Incorrect 'potential resource leak' |
| * bug 395977 - [compiler][resource] Resource leak warning behavior possibly incorrect for anonymous inner class |
| * bug 403147 - [compiler][null] FUP of bug 400761: consolidate interaction between unboxing, NPE, and deferred checking |
| * Bug 415850 - [1.8] Ensure RunJDTCoreTests can cope with null annotations enabled |
| * Bug 392238 - [1.8][compiler][null] Detect semantically invalid null type annotations |
| * Bug 417295 - [1.8[[null] Massage type annotated null analysis to gel well with deep encoded type bindings. |
| * Bug 416267 - NPE in QualifiedAllocationExpression.resolveType |
| * Bug 400874 - [1.8][compiler] Inference infrastructure should evolve to meet JLS8 18.x (Part G of JSR335 spec) |
| * Bug 424415 - [1.8][compiler] Eventual resolution of ReferenceExpression is not seen to be happening. |
| * Bug 427438 - [1.8][compiler] NPE at org.eclipse.jdt.internal.compiler.ast.ConditionalExpression.generateCode(ConditionalExpression.java:280) |
| * Jesper S Moller <jesper@selskabet.org> - Contributions for |
| * bug 378674 - "The method can be declared as static" is wrong |
| * 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 409245 - [1.8][compiler] Type annotations dropped when call is routed through a synthetic bridge method |
| * Till Brychcy - Contributions for |
| * bug 413460 - NonNullByDefault is not inherited to Constructors when accessed via Class File |
| ******************************************************************************/ |
| package org.eclipse.jdt.internal.compiler.ast; |
| |
| import static org.eclipse.jdt.internal.compiler.ast.ExpressionContext.INVOCATION_CONTEXT; |
| |
| import java.util.Arrays; |
| |
| import org.eclipse.jdt.core.compiler.IProblem; |
| import org.eclipse.jdt.internal.compiler.ASTVisitor; |
| import org.eclipse.jdt.internal.compiler.classfmt.ClassFileConstants; |
| import org.eclipse.jdt.internal.compiler.codegen.CodeStream; |
| import org.eclipse.jdt.internal.compiler.codegen.Opcodes; |
| import org.eclipse.jdt.internal.compiler.flow.FlowContext; |
| import org.eclipse.jdt.internal.compiler.flow.FlowInfo; |
| import org.eclipse.jdt.internal.compiler.impl.CompilerOptions; |
| import org.eclipse.jdt.internal.compiler.impl.CompilerOptions.WeavingScheme; |
| import org.eclipse.jdt.internal.compiler.impl.Constant; |
| import org.eclipse.jdt.internal.compiler.lookup.AnnotationBinding; |
| import org.eclipse.jdt.internal.compiler.lookup.Binding; |
| import org.eclipse.jdt.internal.compiler.lookup.BlockScope; |
| import org.eclipse.jdt.internal.compiler.lookup.ExtraCompilerModifiers; |
| import org.eclipse.jdt.internal.compiler.lookup.FieldBinding; |
| import org.eclipse.jdt.internal.compiler.lookup.ImplicitNullAnnotationVerifier; |
| import org.eclipse.jdt.internal.compiler.lookup.IntersectionTypeBinding18; |
| import org.eclipse.jdt.internal.compiler.lookup.LocalTypeBinding; |
| import org.eclipse.jdt.internal.compiler.lookup.LocalVariableBinding; |
| import org.eclipse.jdt.internal.compiler.lookup.LookupEnvironment; |
| import org.eclipse.jdt.internal.compiler.lookup.MethodBinding; |
| import org.eclipse.jdt.internal.compiler.lookup.ParameterizedGenericMethodBinding; |
| import org.eclipse.jdt.internal.compiler.lookup.ParameterizedTypeBinding; |
| import org.eclipse.jdt.internal.compiler.lookup.PolyTypeBinding; |
| import org.eclipse.jdt.internal.compiler.lookup.ProblemMethodBinding; |
| import org.eclipse.jdt.internal.compiler.lookup.ProblemReasons; |
| import org.eclipse.jdt.internal.compiler.lookup.ProblemReferenceBinding; |
| import org.eclipse.jdt.internal.compiler.lookup.RawTypeBinding; |
| import org.eclipse.jdt.internal.compiler.lookup.ReferenceBinding; |
| import org.eclipse.jdt.internal.compiler.lookup.Scope; |
| import org.eclipse.jdt.internal.compiler.lookup.TagBits; |
| import org.eclipse.jdt.internal.compiler.lookup.TypeBinding; |
| import org.eclipse.jdt.internal.compiler.lookup.TypeBindingVisitor; |
| import org.eclipse.jdt.internal.compiler.lookup.TypeConstants; |
| import org.eclipse.jdt.internal.compiler.lookup.TypeIds; |
| import org.eclipse.jdt.internal.compiler.lookup.TypeVariableBinding; |
| import org.eclipse.jdt.internal.compiler.lookup.VariableBinding; |
| import org.eclipse.objectteams.otdt.core.exceptions.InternalCompilerError; |
| import org.eclipse.objectteams.otdt.internal.core.compiler.ast.ConstructorDecapsulationException; |
| import org.eclipse.objectteams.otdt.internal.core.compiler.control.Dependencies; |
| import org.eclipse.objectteams.otdt.internal.core.compiler.control.ITranslationStates; |
| import org.eclipse.objectteams.otdt.internal.core.compiler.lifting.Lifting; |
| import org.eclipse.objectteams.otdt.internal.core.compiler.lookup.AnchorMapping; |
| import org.eclipse.objectteams.otdt.internal.core.compiler.lookup.RoleTypeBinding; |
| import org.eclipse.objectteams.otdt.internal.core.compiler.statemachine.copyinheritance.CopyInheritance; |
| import org.eclipse.objectteams.otdt.internal.core.compiler.util.RoleTypeCreator; |
| |
| |
| //{ObjectTeams: |
| /** |
| * OTDT changes: |
| * |
| * What: renamed from QualifiedAllocationExpression |
| * Why: let clients still use QualifiedAllocationExpression, which is now our sub-class of this one. |
| * |
| * What: avoid double-resolving enclosingInstanceType |
| * |
| * What: propagate errors to the anonymous type if present |
| * |
| * What: prepare context for getConstructor(): |
| * + receiver type in STATE_TYPES_ADJUSTED |
| * + anchor mapping |
| * |
| * What: wrap resolvedType if it's a role. |
| * |
| * This class adds an alternative implementation using a creator call. |
| * It is in-lined in the original class in order to defer the decision |
| * whether or not to translate it into a role creator call. |
| * This decision can only be made after the receiver (lhs of dot) is resolved. |
| * Double inheritance as to keep the facade but outsource our modifications |
| * |
| * ---- |
| * |
| * Variation on allocation, where can optionally be specified any of: |
| * - leading enclosing instance |
| * - trailing anonymous type |
| * - generic type arguments for generic constructor invocation |
| */ |
| public class QualifiedAllocationExpression extends AllocationExpression { |
| |
| //qualification may be on both side |
| public Expression enclosingInstance; |
| //{ObjectTeams: |
| /** If not generating a createCall, this marks the request to cast the enclosingInstance before calling the ctor. */ |
| protected ReferenceBinding enclosingInstanceCast = null; |
| |
| protected boolean hasEnclosingInstanceProblem; |
| |
| /** if this is set, we are using the translated version. */ |
| private MessageSend creatorCall = null; |
| |
| private Runnable preGenerateTask = null; // an optional task to be performed at the start of generateCode. |
| // SH} |
| public TypeDeclaration anonymousType; |
| |
| public QualifiedAllocationExpression() { |
| // for subtypes |
| } |
| |
| public QualifiedAllocationExpression(TypeDeclaration anonymousType) { |
| this.anonymousType = anonymousType; |
| anonymousType.allocation = this; |
| } |
| |
| @Override |
| public FlowInfo analyseCode(BlockScope currentScope, FlowContext flowContext, FlowInfo flowInfo) { |
| //{ObjectTeams: dispatch: |
| if (this.creatorCall != null) |
| return this.creatorCall.analyseCode(currentScope, flowContext, flowInfo); |
| // SH} |
| // analyse the enclosing instance |
| if (this.enclosingInstance != null) { |
| flowInfo = this.enclosingInstance.analyseCode(currentScope, flowContext, flowInfo); |
| } else { |
| if (this.binding != null && this.binding.declaringClass != null) { |
| ReferenceBinding superclass = this.binding.declaringClass.superclass(); |
| if (superclass != null && superclass.isMemberType() && !superclass.isStatic()) { |
| // creating an anonymous type of a non-static member type without an enclosing instance of parent type |
| currentScope.tagAsAccessingEnclosingInstanceStateOf(superclass.enclosingType(), false /* type variable access */); |
| // Reviewed for https://bugs.eclipse.org/bugs/show_bug.cgi?id=378674 : |
| // The corresponding problem (when called from static) is not produced until during code generation |
| } |
| } |
| |
| } |
| |
| // check captured variables are initialized in current context (26134) |
| checkCapturedLocalInitializationIfNecessary( |
| (ReferenceBinding)(this.anonymousType == null |
| ? this.binding.declaringClass.erasure() |
| : this.binding.declaringClass.superclass().erasure()), |
| currentScope, |
| flowInfo); |
| |
| // process arguments |
| if (this.arguments != null) { |
| boolean analyseResources = currentScope.compilerOptions().analyseResourceLeaks; |
| boolean hasResourceWrapperType = analyseResources |
| && this.resolvedType instanceof ReferenceBinding |
| && ((ReferenceBinding)this.resolvedType).hasTypeBit(TypeIds.BitWrapperCloseable); |
| for (int i = 0, count = this.arguments.length; i < count; i++) { |
| flowInfo = this.arguments[i].analyseCode(currentScope, flowContext, flowInfo); |
| if (analyseResources && !hasResourceWrapperType) { // allocation of wrapped closeables is analyzed specially |
| // if argument is an AutoCloseable insert info that it *may* be closed (by the target method, i.e.) |
| flowInfo = FakedTrackingVariable.markPassedToOutside(currentScope, this.arguments[i], flowInfo, flowContext, false); |
| } |
| this.arguments[i].checkNPEbyUnboxing(currentScope, flowContext, flowInfo); |
| } |
| analyseArguments(currentScope, flowContext, flowInfo, this.binding, this.arguments); |
| } |
| |
| // analyse the anonymous nested type |
| if (this.anonymousType != null) { |
| flowInfo = this.anonymousType.analyseCode(currentScope, flowContext, flowInfo); |
| } |
| |
| // record some dependency information for exception types |
| ReferenceBinding[] thrownExceptions; |
| if (((thrownExceptions = this.binding.thrownExceptions).length) != 0) { |
| if ((this.bits & ASTNode.Unchecked) != 0 && this.genericTypeArguments == null) { |
| // https://bugs.eclipse.org/bugs/show_bug.cgi?id=277643, align with javac on JLS 15.12.2.6 |
| thrownExceptions = currentScope.environment().convertToRawTypes(this.binding.thrownExceptions, true, true); |
| } |
| // check exception handling |
| flowContext.checkExceptionHandlers( |
| thrownExceptions, |
| this, |
| flowInfo.unconditionalCopy(), |
| currentScope); |
| } |
| |
| // after having analysed exceptions above start tracking newly allocated resource: |
| if (currentScope.compilerOptions().analyseResourceLeaks && FakedTrackingVariable.isAnyCloseable(this.resolvedType)) { |
| FakedTrackingVariable.analyseCloseableAllocation(currentScope, flowInfo, this); |
| } |
| |
| manageEnclosingInstanceAccessIfNecessary(currentScope, flowInfo); |
| manageSyntheticAccessIfNecessary(currentScope, flowInfo); |
| |
| // account for possible exceptions thrown by constructor execution: |
| flowContext.recordAbruptExit(); |
| |
| return flowInfo; |
| } |
| |
| @Override |
| public Expression enclosingInstance() { |
| |
| return this.enclosingInstance; |
| } |
| |
| @Override |
| public void generateCode(BlockScope currentScope, CodeStream codeStream, boolean valueRequired) { |
| //{ObjectTeams: dispatch: |
| if (this.preGenerateTask != null) |
| this.preGenerateTask.run(); // transfer a local variable's resolvedPosition just before it is used for generating code |
| if (this.creatorCall != null) { |
| this.creatorCall.generateCode(currentScope, codeStream, valueRequired); |
| return; |
| } |
| // SH} |
| cleanUpInferenceContexts(); |
| if (!valueRequired) |
| currentScope.problemReporter().unusedObjectAllocation(this); |
| int pc = codeStream.position; |
| MethodBinding codegenBinding = this.binding.original(); |
| ReferenceBinding allocatedType = codegenBinding.declaringClass; |
| codeStream.new_(this.type, allocatedType); |
| boolean isUnboxing = (this.implicitConversion & TypeIds.UNBOXING) != 0; |
| if (valueRequired || isUnboxing) { |
| codeStream.dup(); |
| } |
| // better highlight for allocation: display the type individually |
| if (this.type != null) { // null for enum constant body |
| codeStream.recordPositionsFrom(pc, this.type.sourceStart); |
| } else { |
| // push enum constant name and ordinal |
| codeStream.ldc(String.valueOf(this.enumConstant.name)); |
| codeStream.generateInlinedValue(this.enumConstant.binding.id); |
| } |
| // handling innerclass instance allocation - enclosing instance arguments |
| if (allocatedType.isNestedType()) { |
| codeStream.generateSyntheticEnclosingInstanceValues( |
| currentScope, |
| allocatedType, |
| enclosingInstance(), |
| this); |
| //{ObjectTeams: additional cast required? |
| if (this.enclosingInstanceCast != null) |
| codeStream.checkcast(this.enclosingInstanceCast); |
| // SH} |
| } |
| // generate the arguments for constructor |
| generateArguments(this.binding, this.arguments, currentScope, codeStream); |
| // handling innerclass instance allocation - outer local arguments |
| if (allocatedType.isNestedType()) { |
| codeStream.generateSyntheticOuterArgumentValues( |
| currentScope, |
| allocatedType, |
| this); |
| } |
| |
| // invoke constructor |
| if (this.syntheticAccessor == null) { |
| codeStream.invoke(Opcodes.OPC_invokespecial, codegenBinding, null /* default declaringClass */, this.typeArguments); |
| } else { |
| // synthetic accessor got some extra arguments appended to its signature, which need values |
| for (int i = 0, |
| max = this.syntheticAccessor.parameters.length - codegenBinding.parameters.length; |
| i < max; |
| i++) { |
| codeStream.aconst_null(); |
| } |
| codeStream.invoke(Opcodes.OPC_invokespecial, this.syntheticAccessor, null /* default declaringClass */, this.typeArguments); |
| } |
| if (valueRequired) { |
| codeStream.generateImplicitConversion(this.implicitConversion); |
| } else if (isUnboxing) { |
| // conversion only generated if unboxing |
| codeStream.generateImplicitConversion(this.implicitConversion); |
| switch (postConversionType(currentScope).id) { |
| case T_long : |
| case T_double : |
| codeStream.pop2(); |
| break; |
| default : |
| codeStream.pop(); |
| } |
| } |
| codeStream.recordPositionsFrom(pc, this.sourceStart); |
| |
| if (this.anonymousType != null) { |
| this.anonymousType.generateCode(currentScope, codeStream); |
| } |
| } |
| |
| @Override |
| public boolean isSuperAccess() { |
| |
| // necessary to lookup super constructor of anonymous type |
| return this.anonymousType != null; |
| } |
| |
| /* Inner emulation consists in either recording a dependency |
| * link only, or performing one level of propagation. |
| * |
| * Dependency mechanism is used whenever dealing with source target |
| * types, since by the time we reach them, we might not yet know their |
| * exact need. |
| */ |
| @Override |
| public void manageEnclosingInstanceAccessIfNecessary(BlockScope currentScope, FlowInfo flowInfo) { |
| if ((flowInfo.tagBits & FlowInfo.UNREACHABLE_OR_DEAD) == 0) { |
| ReferenceBinding allocatedTypeErasure = (ReferenceBinding) this.binding.declaringClass.erasure(); |
| |
| // perform some extra emulation work in case there is some and we are inside a local type only |
| if (allocatedTypeErasure.isNestedType() |
| && (currentScope.enclosingSourceType().isLocalType() || currentScope.isLambdaSubscope())) { |
| |
| if (allocatedTypeErasure.isLocalType()) { |
| ((LocalTypeBinding) allocatedTypeErasure).addInnerEmulationDependent(currentScope, this.enclosingInstance != null); |
| } else { |
| // locally propagate, since we already now the desired shape for sure |
| currentScope.propagateInnerEmulation(allocatedTypeErasure, this.enclosingInstance != null); |
| } |
| } |
| } |
| } |
| |
| @Override |
| public StringBuffer printExpression(int indent, StringBuffer output) { |
| //{ObjectTeams: dispatch |
| if (this.creatorCall != null) |
| return this.creatorCall.printExpression(indent, output); |
| // SH} |
| if (this.enclosingInstance != null) |
| this.enclosingInstance.printExpression(0, output).append('.'); |
| super.printExpression(0, output); |
| if (this.anonymousType != null) { |
| this.anonymousType.print(indent, output); |
| } |
| return output; |
| } |
| |
| @Override |
| public TypeBinding resolveType(BlockScope scope) { |
| //{ObjectTeams: special casing |
| if (this.anonymousType == null && this.creatorCall == null && this.enclosingInstance == null) // special case during code assist |
| return origResolveType(scope); |
| |
| this.hasEnclosingInstanceProblem = false; |
| if (this.anonymousType == null && this.creatorCall == null) { // no double processing |
| |
| if (this.enclosingInstance instanceof CastExpression) |
| this.enclosingInstance.bits |= DisableUnnecessaryCastCheck; // will check later on (within super.resolveType()) |
| |
| TypeBinding enclosingInstanceType = this.enclosingInstance.resolveType(scope); |
| this.hasEnclosingInstanceProblem = enclosingInstanceType == null; |
| |
| if ( !scope.isGeneratedScope() |
| && enclosingInstanceType != null |
| && enclosingInstanceType.isTeam()) // non reference types will trigger error reporting via super.resolveType() |
| { |
| if (this.enclosingInstance instanceof NameReference) { |
| final NameReference anchorRef = (NameReference)this.enclosingInstance; |
| if (!((VariableBinding)anchorRef.binding).isFinal()) { |
| |
| // replace non-final anchor with fake-binding, |
| // so that this type is not compatibly to anything else: |
| char[] variableName = ((VariableBinding)anchorRef.binding).name; |
| switch (anchorRef.bits & ASTNode.RestrictiveFlagMASK) { |
| case Binding.LOCAL: |
| final LocalVariableBinding localOrig = (LocalVariableBinding)anchorRef.binding; |
| // mark the original as used before we procede with a fake copy: |
| localOrig.useFlag = LocalVariableBinding.USED; |
| anchorRef.binding = new LocalVariableBinding(variableName, enclosingInstanceType, ClassFileConstants.AccFinal, false) |
| { |
| @Override public int problemId() { return IProblem.AnchorNotFinal; } |
| }; |
| this.preGenerateTask = new Runnable() { @Override |
| public void run() { |
| // need to transfer this info from the real local to the fake one (don't have that info yet): |
| ((LocalVariableBinding)anchorRef.binding).resolvedPosition = localOrig.resolvedPosition; |
| }}; |
| break; |
| case Binding.FIELD: |
| anchorRef.binding = new FieldBinding(variableName, enclosingInstanceType, ClassFileConstants.AccFinal, scope.referenceType().binding, Constant.NotAConstant) |
| { |
| @Override public int problemId() { return IProblem.AnchorNotFinal; } |
| }; |
| break; |
| default: |
| throw new InternalCompilerError("Unexpected bits, neither local nor field "+anchorRef.bits+": "+anchorRef); //$NON-NLS-1$ //$NON-NLS-2$ |
| } |
| } |
| } |
| |
| if (this.type.getTypeName().length > 1) { |
| scope.problemReporter().roleCreationNotRelativeToEnclosingTeam(this); |
| return null; |
| } |
| |
| // now it's finally time to create the alternate version: |
| this.creatorCall = CopyInheritance.createConstructorMethodInvocationExpression(scope, this); |
| if (this.creatorCall == null) |
| return null; |
| } |
| } |
| if (this.creatorCall == null) { |
| TypeBinding typ = origResolveType(scope); |
| if (typ == null || typ instanceof PolyTypeBinding) |
| return typ; |
| |
| if (!this.hasEnclosingInstanceProblem) { // more checks only if no error already |
| // if enclosing is a role request a cast to the class part as required by the inner constructor |
| if (this.enclosingInstance != null) { |
| TypeBinding enclosingType = this.enclosingInstance.resolvedType; |
| if (enclosingType instanceof ReferenceBinding && ((ReferenceBinding)enclosingType).isDirectRole()) |
| this.enclosingInstanceCast = ((ReferenceBinding)enclosingType).getRealClass(); |
| } |
| ReferenceBinding superType = null; |
| if (this.resolvedType instanceof ReferenceBinding) |
| superType= ((ReferenceBinding)this.resolvedType).superclass(); |
| if ( superType != null |
| && (superType instanceof RoleTypeBinding)) |
| { |
| RoleTypeBinding superRole = (RoleTypeBinding)superType; |
| if (superRole.hasExplicitAnchor()) |
| scope.problemReporter().extendingExternalizedRole(superRole, this.type); |
| } |
| } |
| } else { // === with creatorCall === |
| |
| this.constant = Constant.NotAConstant; |
| |
| this.resolvedType = this.creatorCall.resolveType(scope); |
| // when creating role nested instance, no cast of enclosing role needed in this branch, |
| // because creator call is routed via the interface of the enclosing role. |
| if (this.resolvedType != null) { |
| if (((ReferenceBinding)this.resolvedType).isAbstract()) |
| { |
| if (!((ReferenceBinding)enclosingInstance().resolvedType).isAbstract()) |
| scope.problemReporter().abstractRoleIsRelevant(this, (ReferenceBinding) this.creatorCall.resolvedType); |
| } |
| if (this.resolvedType.isValidBinding()) { |
| // FIXME(SH): remove cast unwrapping |
| Expression createExpr = this.creatorCall; |
| while (createExpr instanceof CastExpression) // may have been wrapped using CollectedReplacementsTransformer |
| createExpr = ((CastExpression)createExpr).expression; |
| |
| this.binding = ((MessageSend)createExpr).binding; // store the method binding |
| |
| // using lift-ctor in a qualified way? (OTJDL 2.4.1(a)) |
| ReferenceBinding role = (ReferenceBinding)this.resolvedType; |
| MethodBinding creator = this.binding; |
| if (creator != null) { |
| MethodBinding ctor = role.getExactConstructor(creator.parameters); |
| if (Lifting.isLiftToConstructor(ctor, role)) |
| scope.problemReporter().qualifiedUseOfLiftingConstructor(ctor, this.creatorCall); |
| } |
| } |
| } |
| } |
| return this.resolvedType; |
| } |
| public TypeBinding origResolveType(BlockScope scope) { |
| // SH} |
| // added for code assist...cannot occur with 'normal' code |
| if (this.anonymousType == null && this.enclosingInstance == null) { |
| return super.resolveType(scope); |
| } |
| TypeBinding result = resolveTypeForQualifiedAllocationExpression(scope); |
| if (result != null && !result.isPolyType() && this.binding != null) { |
| final CompilerOptions compilerOptions = scope.compilerOptions(); |
| if (compilerOptions.isAnnotationBasedNullAnalysisEnabled) { |
| ImplicitNullAnnotationVerifier.ensureNullnessIsKnown(this.binding, scope); |
| if (scope.environment().usesNullTypeAnnotations()) { |
| if (this.binding instanceof ParameterizedGenericMethodBinding && this.typeArguments != null) { |
| TypeVariableBinding[] typeVariables = this.binding.original().typeVariables(); |
| for (int i = 0; i < this.typeArguments.length; i++) |
| this.typeArguments[i].checkNullConstraints(scope, (ParameterizedGenericMethodBinding) this.binding, typeVariables, i); |
| } |
| if (this.resolvedType.isValidBinding()) { |
| this.resolvedType = scope.environment().createAnnotatedType(this.resolvedType, new AnnotationBinding[] {scope.environment().getNonNullAnnotation()}); |
| } |
| } |
| } |
| if (compilerOptions.sourceLevel >= ClassFileConstants.JDK1_8 && |
| this.binding.getTypeAnnotations() != Binding.NO_ANNOTATIONS) { |
| this.resolvedType = scope.environment().createAnnotatedType(this.resolvedType, this.binding.getTypeAnnotations()); |
| } |
| } |
| return result; |
| } |
| |
| private TypeBinding resolveTypeForQualifiedAllocationExpression(BlockScope scope) { |
| // Propagate the type checking to the arguments, and checks if the constructor is defined. |
| // ClassInstanceCreationExpression ::= Primary '.' 'new' SimpleName '(' ArgumentListopt ')' ClassBodyopt |
| // ClassInstanceCreationExpression ::= Name '.' 'new' SimpleName '(' ArgumentListopt ')' ClassBodyopt |
| final boolean isDiamond = this.type != null && (this.type.bits & ASTNode.IsDiamond) != 0; |
| TypeBinding enclosingInstanceType = null; |
| TypeBinding receiverType = null; |
| long sourceLevel = scope.compilerOptions().sourceLevel; |
| if (this.constant != Constant.NotAConstant) { |
| this.constant = Constant.NotAConstant; |
| ReferenceBinding enclosingInstanceReference = null; |
| boolean hasError = false; |
| boolean enclosingInstanceContainsCast = false; |
| |
| if (this.enclosingInstance != null) { |
| if (this.enclosingInstance instanceof CastExpression) { |
| this.enclosingInstance.bits |= ASTNode.DisableUnnecessaryCastCheck; // will check later on |
| enclosingInstanceContainsCast = true; |
| } |
| //{ObjectTeams: no double resolving: |
| /* orig: |
| if ((enclosingInstanceType = this.enclosingInstance.resolveType(scope)) == null){ |
| :giro */ |
| enclosingInstanceType = this.enclosingInstance.resolvedType; |
| if (enclosingInstanceType == null && !this.hasEnclosingInstanceProblem) |
| enclosingInstanceType = this.enclosingInstance.resolveType(scope); |
| if (enclosingInstanceType == null) { |
| // SH} |
| hasError = true; |
| } else if (enclosingInstanceType.isBaseType() || enclosingInstanceType.isArrayType()) { |
| scope.problemReporter().illegalPrimitiveOrArrayTypeForEnclosingInstance( |
| enclosingInstanceType, |
| this.enclosingInstance); |
| hasError = true; |
| } else if (this.type instanceof QualifiedTypeReference) { |
| scope.problemReporter().illegalUsageOfQualifiedTypeReference((QualifiedTypeReference)this.type); |
| hasError = true; |
| } else if (!(enclosingInstanceReference = (ReferenceBinding) enclosingInstanceType).canBeSeenBy(scope)) { |
| // https://bugs.eclipse.org/bugs/show_bug.cgi?id=317212 |
| enclosingInstanceType = new ProblemReferenceBinding( |
| enclosingInstanceReference.compoundName, |
| enclosingInstanceReference, |
| ProblemReasons.NotVisible); |
| scope.problemReporter().invalidType(this.enclosingInstance, enclosingInstanceType); |
| hasError = true; |
| } else { |
| this.resolvedType = receiverType = ((SingleTypeReference) this.type).resolveTypeEnclosing(scope, (ReferenceBinding) enclosingInstanceType); |
| checkIllegalNullAnnotation(scope, receiverType); |
| if (receiverType != null && enclosingInstanceContainsCast) { |
| CastExpression.checkNeedForEnclosingInstanceCast(scope, this.enclosingInstance, enclosingInstanceType, receiverType); |
| } |
| } |
| } else { |
| if (this.type == null) { |
| // initialization of an enum constant |
| receiverType = scope.enclosingSourceType(); |
| } else { |
| receiverType = this.type.resolveType(scope, true /* check bounds*/); |
| checkIllegalNullAnnotation(scope, receiverType); |
| checkParameterizedAllocation: { |
| if (receiverType == null || !receiverType.isValidBinding()) break checkParameterizedAllocation; |
| if (this.type instanceof ParameterizedQualifiedTypeReference) { // disallow new X<String>.Y<Integer>() |
| ReferenceBinding currentType = (ReferenceBinding)receiverType; |
| do { |
| // isStatic() is answering true for toplevel types |
| if ((currentType.modifiers & ClassFileConstants.AccStatic) != 0) break checkParameterizedAllocation; |
| if (currentType.isRawType()) break checkParameterizedAllocation; |
| } while ((currentType = currentType.enclosingType())!= null); |
| ParameterizedQualifiedTypeReference qRef = (ParameterizedQualifiedTypeReference) this.type; |
| for (int i = qRef.typeArguments.length - 2; i >= 0; i--) { |
| if (qRef.typeArguments[i] != null) { |
| scope.problemReporter().illegalQualifiedParameterizedTypeAllocation(this.type, receiverType); |
| break; |
| } |
| } |
| } |
| } |
| } |
| } |
| if (receiverType == null || !receiverType.isValidBinding()) { |
| hasError = true; |
| } |
| |
| // resolve type arguments (for generic constructor call) |
| if (this.typeArguments != null) { |
| int length = this.typeArguments.length; |
| this.argumentsHaveErrors = sourceLevel < ClassFileConstants.JDK1_5; |
| this.genericTypeArguments = new TypeBinding[length]; |
| for (int i = 0; i < length; i++) { |
| TypeReference typeReference = this.typeArguments[i]; |
| if ((this.genericTypeArguments[i] = typeReference.resolveType(scope, true /* check bounds*/)) == null) { |
| this.argumentsHaveErrors = true; |
| } |
| if (this.argumentsHaveErrors && typeReference instanceof Wildcard) { |
| scope.problemReporter().illegalUsageOfWildcard(typeReference); |
| } |
| } |
| if (isDiamond) { |
| scope.problemReporter().diamondNotWithExplicitTypeArguments(this.typeArguments); |
| return null; |
| } |
| if (this.argumentsHaveErrors) { |
| if (this.arguments != null) { // still attempt to resolve arguments |
| for (int i = 0, max = this.arguments.length; i < max; i++) { |
| this.arguments[i].resolveType(scope); |
| } |
| } |
| return null; |
| } |
| } |
| |
| // will check for null after args are resolved |
| this.argumentTypes = Binding.NO_PARAMETERS; |
| if (this.arguments != null) { |
| int length = this.arguments.length; |
| this.argumentTypes = new TypeBinding[length]; |
| for (int i = 0; i < length; i++) { |
| Expression argument = this.arguments[i]; |
| if (argument instanceof CastExpression) { |
| argument.bits |= ASTNode.DisableUnnecessaryCastCheck; // will check later on |
| this.argsContainCast = true; |
| } |
| argument.setExpressionContext(INVOCATION_CONTEXT); |
| if ((this.argumentTypes[i] = argument.resolveType(scope)) == null){ |
| this.argumentsHaveErrors = hasError = true; |
| } |
| } |
| } |
| |
| // limit of fault-tolerance |
| if (hasError) { |
| /* https://bugs.eclipse.org/bugs/show_bug.cgi?id=345359, if arguments have errors, completely bail out in the <> case. |
| No meaningful type resolution is possible since inference of the elided types is fully tied to argument types. Do |
| not return the partially resolved type. |
| */ |
| if (isDiamond) { |
| return null; // not the partially cooked this.resolvedType |
| } |
| //{ObjectTeams: prevent a faulty anonymous type from being processed! |
| if (this.anonymousType != null) |
| this.anonymousType.tagAsHavingErrors(); |
| // SH} |
| if (receiverType instanceof ReferenceBinding) { |
| ReferenceBinding referenceReceiver = (ReferenceBinding) receiverType; |
| if (receiverType.isValidBinding()) { |
| // record a best guess, for clients who need hint about possible contructor match |
| int length = this.arguments == null ? 0 : this.arguments.length; |
| TypeBinding[] pseudoArgs = new TypeBinding[length]; |
| for (int i = length; --i >= 0;) { |
| pseudoArgs[i] = this.argumentTypes[i] == null ? TypeBinding.NULL : this.argumentTypes[i]; // replace args with errors with null type |
| } |
| this.binding = scope.findMethod(referenceReceiver, TypeConstants.INIT, pseudoArgs, this, false); |
| if (this.binding != null && !this.binding.isValidBinding()) { |
| MethodBinding closestMatch = ((ProblemMethodBinding)this.binding).closestMatch; |
| // record the closest match, for clients who may still need hint about possible method match |
| if (closestMatch != null) { |
| if (closestMatch.original().typeVariables != Binding.NO_TYPE_VARIABLES) { // generic method |
| // shouldn't return generic method outside its context, rather convert it to raw method (175409) |
| closestMatch = scope.environment().createParameterizedGenericMethod(closestMatch.original(), (RawTypeBinding)null); |
| } |
| this.binding = closestMatch; |
| MethodBinding closestMatchOriginal = closestMatch.original(); |
| if (closestMatchOriginal.isOrEnclosedByPrivateType() && !scope.isDefinedInMethod(closestMatchOriginal)) { |
| // ignore cases where method is used from within inside itself (e.g. direct recursions) |
| closestMatchOriginal.modifiers |= ExtraCompilerModifiers.AccLocallyUsed; |
| } |
| } |
| } |
| } |
| if (this.anonymousType != null) { |
| // insert anonymous type in scope (see https://bugs.eclipse.org/bugs/show_bug.cgi?id=210070) |
| scope.addAnonymousType(this.anonymousType, referenceReceiver); |
| this.anonymousType.resolve(scope); |
| return this.resolvedType = this.anonymousType.binding; |
| } |
| } |
| return this.resolvedType = receiverType; |
| } |
| if (this.anonymousType == null) { |
| // qualified allocation with no anonymous type |
| if (!receiverType.canBeInstantiated()) { |
| scope.problemReporter().cannotInstantiate(this.type, receiverType); |
| return this.resolvedType = receiverType; |
| } |
| } else { |
| if (isDiamond) { |
| if (sourceLevel < ClassFileConstants.JDK9) { |
| scope.problemReporter().diamondNotWithAnoymousClasses(this.type); |
| return null; |
| } |
| } |
| ReferenceBinding superType = (ReferenceBinding) receiverType; |
| if (superType.isTypeVariable()) { |
| superType = new ProblemReferenceBinding(new char[][]{superType.sourceName()}, superType, ProblemReasons.IllegalSuperTypeVariable); |
| scope.problemReporter().invalidType(this, superType); |
| return null; |
| } else if (this.type != null && superType.isEnum()) { // tolerate enum constant body |
| scope.problemReporter().cannotInstantiate(this.type, superType); |
| return this.resolvedType = superType; |
| } |
| this.resolvedType = receiverType; |
| } |
| } else { |
| if (this.enclosingInstance != null) { |
| enclosingInstanceType = this.enclosingInstance.resolvedType; |
| this.resolvedType = receiverType = this.type.resolvedType; |
| } |
| } |
| MethodBinding constructorBinding = null; |
| if (isDiamond) { |
| this.binding = constructorBinding = inferConstructorOfElidedParameterizedType(scope); |
| if (this.binding == null || !this.binding.isValidBinding()) { |
| scope.problemReporter().cannotInferElidedTypes(this); |
| return this.resolvedType = null; |
| } |
| if (this.typeExpected == null && sourceLevel >= ClassFileConstants.JDK1_8 && this.expressionContext.definesTargetType()) { |
| return new PolyTypeBinding(this); |
| } |
| this.resolvedType = this.type.resolvedType = receiverType = this.binding.declaringClass; |
| if (this.anonymousType != null) { |
| constructorBinding = getAnonymousConstructorBinding((ReferenceBinding) receiverType, scope); |
| if (constructorBinding == null) |
| return null; |
| this.resolvedType = this.anonymousType.binding; |
| // Check that inferred type is valid |
| if (!validate((ParameterizedTypeBinding) receiverType, scope)) { |
| return this.resolvedType; |
| } |
| } else { |
| // 15.9.3 - If the compile-time declaration is applicable by variable arity invocation... |
| if (this.binding.isVarargs()) { |
| TypeBinding lastArg = this.binding.parameters[this.binding.parameters.length - 1].leafComponentType(); |
| if (!lastArg.erasure().canBeSeenBy(scope)) { |
| scope.problemReporter().invalidType(this, new ProblemReferenceBinding(new char[][] {lastArg.readableName()}, (ReferenceBinding)lastArg, ProblemReasons.NotVisible)); |
| return this.resolvedType = null; |
| } |
| } |
| } |
| this.binding = resolvePolyExpressionArguments(this, this.binding, this.argumentTypes, scope); |
| } else { |
| //{ObjectTeams: setup context for constructor lookup: |
| if (receiverType instanceof ReferenceBinding) // funny thing: receiver could be array.. |
| Dependencies.ensureBindingState( |
| (ReferenceBinding)receiverType, |
| ITranslationStates.STATE_TYPES_ADJUSTED); |
| AnchorMapping anchorMapping = AnchorMapping.setupNewMapping( |
| null, this.arguments, scope); |
| try { |
| // orig: |
| if (this.anonymousType != null) { |
| constructorBinding = getAnonymousConstructorBinding((ReferenceBinding) receiverType, scope); |
| if (constructorBinding == null) |
| return null; |
| this.resolvedType = this.anonymousType.binding; |
| } else { |
| this.binding = constructorBinding = findConstructorBinding(scope, this, (ReferenceBinding) receiverType, this.argumentTypes); |
| } |
| // :giro |
| } finally { |
| AnchorMapping.removeCurrentMapping(anchorMapping); |
| } |
| // SH} |
| } |
| ReferenceBinding receiver = (ReferenceBinding) receiverType; |
| ReferenceBinding superType = receiver.isInterface() ? scope.getJavaLangObject() : receiver; |
| if (constructorBinding.isValidBinding()) { |
| if (isMethodUseDeprecated(constructorBinding, scope, true, this)) { |
| scope.problemReporter().deprecatedMethod(constructorBinding, this); |
| } |
| if (checkInvocationArguments(scope, null, superType, constructorBinding, this.arguments, |
| this.argumentTypes, this.argsContainCast, this)) { |
| this.bits |= ASTNode.Unchecked; |
| } |
| if (this.typeArguments != null && constructorBinding.original().typeVariables == Binding.NO_TYPE_VARIABLES) { |
| scope.problemReporter().unnecessaryTypeArgumentsForMethodInvocation(constructorBinding, |
| this.genericTypeArguments, this.typeArguments); |
| } |
| } else { |
| if (constructorBinding.declaringClass == null) { |
| constructorBinding.declaringClass = superType; |
| } |
| if (this.type != null && !this.type.resolvedType.isValidBinding()) { |
| // problem already got signaled on type reference, do not report secondary problem |
| return null; |
| } |
| //{ObjectTeams: decapsulating base constructor call? |
| if (this.type != null && this.type.getBaseclassDecapsulation().isAllowed()) { |
| this.binding = ((ProblemMethodBinding)this.binding).closestMatch; |
| int accessId = scope.enclosingSourceType().roleModel.addInaccessibleBaseMethod(this.binding); |
| scope.problemReporter().decapsulation(this, scope); |
| if (scope.compilerOptions().weavingScheme == WeavingScheme.OTDRE) { |
| this.resolvedType = receiverType; |
| throw new ConstructorDecapsulationException(accessId); |
| } |
| } else { |
| // orig: |
| scope.problemReporter().invalidConstructor(this, constructorBinding); |
| return this.resolvedType; |
| // :giro |
| } |
| // SH} |
| } |
| if ((constructorBinding.tagBits & TagBits.HasMissingType) != 0) { |
| scope.problemReporter().missingTypeInConstructor(this, constructorBinding); |
| } |
| if (this.enclosingInstance != null) { |
| ReferenceBinding targetEnclosing = constructorBinding.declaringClass.enclosingType(); |
| if (targetEnclosing == null) { |
| scope.problemReporter().unnecessaryEnclosingInstanceSpecification(this.enclosingInstance, receiver); |
| return this.resolvedType; |
| } else if (!enclosingInstanceType.isCompatibleWith(targetEnclosing) && !scope.isBoxingCompatibleWith(enclosingInstanceType, targetEnclosing)) { |
| scope.problemReporter().typeMismatchError(enclosingInstanceType, targetEnclosing, this.enclosingInstance, null); |
| return this.resolvedType; |
| } |
| this.enclosingInstance.computeConversion(scope, targetEnclosing, enclosingInstanceType); |
| } |
| if (!isDiamond && receiverType.isParameterizedTypeWithActualArguments() && |
| (this.anonymousType == null || sourceLevel >= ClassFileConstants.JDK9)) { |
| checkTypeArgumentRedundancy((ParameterizedTypeBinding) receiverType, scope); |
| } |
| if (this.anonymousType != null) { |
| // anonymous type scenario |
| // Update the anonymous inner class : superclass, interface |
| LookupEnvironment environment=scope.environment(); |
| if (environment.globalOptions.isAnnotationBasedNullAnalysisEnabled) { |
| ImplicitNullAnnotationVerifier.ensureNullnessIsKnown(constructorBinding, scope); |
| } |
| this.binding = this.anonymousType.createDefaultConstructorWithBinding(constructorBinding, (this.bits & ASTNode.Unchecked) != 0 && this.genericTypeArguments == null); |
| return this.resolvedType; |
| } else { |
| //{ObjectTeams: wrap resolved type if it's a role. |
| receiverType = RoleTypeCreator.maybeWrapQualifiedRoleType( |
| scope, |
| this.enclosingInstance, |
| receiverType, |
| this); |
| // SH} |
| return this.resolvedType = receiverType; |
| } |
| } |
| |
| private boolean validate(final ParameterizedTypeBinding allocationType, final Scope scope) { |
| class ValidityInspector extends TypeBindingVisitor { |
| private boolean noErrors; |
| |
| public ValidityInspector() { |
| this.noErrors = true; |
| } |
| |
| @Override |
| public boolean visit(IntersectionTypeBinding18 intersectionTypeBinding18) { |
| Arrays.sort(intersectionTypeBinding18.intersectingTypes, (t1, t2) -> t1.id - t2.id); |
| scope.problemReporter().anonymousDiamondWithNonDenotableTypeArguments(QualifiedAllocationExpression.this.type, allocationType); |
| return this.noErrors = false; // stop traversal |
| } |
| @Override |
| public boolean visit(TypeVariableBinding typeVariable) { |
| if (typeVariable.isCapture()) { |
| scope.problemReporter().anonymousDiamondWithNonDenotableTypeArguments(QualifiedAllocationExpression.this.type, allocationType); |
| return this.noErrors = false; // stop traversal |
| } |
| return true; // continue traversal |
| } |
| @Override |
| public boolean visit(ReferenceBinding ref) { |
| if (!ref.canBeSeenBy(scope)) { |
| scope.problemReporter().invalidType(QualifiedAllocationExpression.this.anonymousType, new ProblemReferenceBinding(ref.compoundName, ref, ProblemReasons.NotVisible)); |
| return this.noErrors = false; |
| } |
| return true; |
| } |
| public boolean isValid() { |
| TypeBindingVisitor.visit(this, allocationType); |
| return this.noErrors; |
| } |
| } |
| |
| return new ValidityInspector().isValid(); |
| } |
| private MethodBinding getAnonymousConstructorBinding(ReferenceBinding receiverType, BlockScope scope) { |
| ReferenceBinding superType = receiverType; |
| // an anonymous class inherits from java.lang.Object when declared "after" an interface |
| ReferenceBinding anonymousSuperclass = superType.isInterface() ? scope.getJavaLangObject() : superType; |
| // insert anonymous type in scope |
| scope.addAnonymousType(this.anonymousType, superType); |
| this.anonymousType.resolve(scope); |
| |
| // find anonymous super constructor |
| this.resolvedType = this.anonymousType.binding; // 1.2 change |
| if ((this.resolvedType.tagBits & TagBits.HierarchyHasProblems) != 0) { |
| return null; // stop secondary errors |
| } |
| //{ObjectTeams: FIXME: use anchorMapping?? SH} |
| return findConstructorBinding(scope, this, anonymousSuperclass, this.argumentTypes); |
| } |
| @Override |
| public void traverse(ASTVisitor visitor, BlockScope scope) { |
| //{ObjectTeams: creator? |
| if (this.creatorCall != null) { |
| this.creatorCall.traverse(visitor, scope); |
| return; |
| } |
| // SH} |
| if (visitor.visit(this, scope)) { |
| if (this.enclosingInstance != null) |
| this.enclosingInstance.traverse(visitor, scope); |
| if (this.typeArguments != null) { |
| for (int i = 0, typeArgumentsLength = this.typeArguments.length; i < typeArgumentsLength; i++) { |
| this.typeArguments[i].traverse(visitor, scope); |
| } |
| } |
| if (this.type != null) // case of enum constant |
| this.type.traverse(visitor, scope); |
| if (this.arguments != null) { |
| int argumentsLength = this.arguments.length; |
| for (int i = 0; i < argumentsLength; i++) |
| this.arguments[i].traverse(visitor, scope); |
| } |
| if (this.anonymousType != null) |
| this.anonymousType.traverse(visitor, scope); |
| } |
| visitor.endVisit(this, scope); |
| } |
| } |
