| /******************************************************************************* |
| * Copyright (c) 2000, 2013 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 |
| * |
| * This is an implementation of an early-draft specification developed under the Java |
| * Community Process (JCP) and is made available for testing and evaluation purposes |
| * only. The code is not compatible with any specification of the JCP. |
| * |
| * 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 236385 - [compiler] Warn for potential programming problem if an object is created but not used |
| * 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 358903 - Filter practically unimportant resource leak warnings |
| * 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 403147 - [compiler][null] FUP of bug 400761: consolidate interaction between unboxing, NPE, and deferred checking |
| * 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 418235 - [compiler][null] Unreported nullness error when using generic |
| * 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 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.*; |
| import org.eclipse.jdt.internal.compiler.flow.*; |
| import org.eclipse.jdt.internal.compiler.impl.CompilerOptions; |
| import org.eclipse.jdt.internal.compiler.impl.Constant; |
| import org.eclipse.jdt.internal.compiler.lookup.*; |
| import org.eclipse.jdt.internal.compiler.problem.ProblemReporter; |
| import org.eclipse.jdt.internal.compiler.problem.ProblemSeverities; |
| 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.control.StateMemento; |
| import org.eclipse.objectteams.otdt.internal.core.compiler.lookup.AnchorMapping; |
| import org.eclipse.objectteams.otdt.internal.core.compiler.lookup.DependentTypeBinding; |
| import org.eclipse.objectteams.otdt.internal.core.compiler.lookup.ITeamAnchor; |
| import org.eclipse.objectteams.otdt.internal.core.compiler.lookup.RoleTypeBinding; |
| import org.eclipse.objectteams.otdt.internal.core.compiler.model.RoleModel; |
| import org.eclipse.objectteams.otdt.internal.core.compiler.statemachine.copyinheritance.CopyInheritance; |
| import org.eclipse.objectteams.otdt.internal.core.compiler.util.AstGenerator; |
| import org.eclipse.objectteams.otdt.internal.core.compiler.util.RoleTypeCreator; |
| import org.eclipse.objectteams.otdt.internal.core.compiler.util.TypeAnalyzer; |
| |
| /** |
| * OTDT changes: |
| * |
| * What: wrap resolved type if role, may need to instantiate parameters of constructor call. |
| * Why: this expression can be seen as a variant of MessageSend |
| * (invokes the constructor and returns a value). |
| * |
| * What: replace "new Role()" statements with a call to the creation method. |
| * Why: do it during resolve, because only now we will find the role if it is in a role file. |
| * |
| * What: record need to check duplicate roles |
| * if this expression creates a role using the lifting constructor |
| * See: Class comment in MethodBinding |
| * |
| * @version $Id: AllocationExpression.java 23405 2010-02-03 17:02:18Z stephan $ |
| */ |
| public class AllocationExpression extends Expression implements InvocationSite { |
| |
| public TypeReference type; |
| public Expression[] arguments; |
| public MethodBinding binding; // exact binding resulting from lookup |
| MethodBinding syntheticAccessor; // synthetic accessor for inner-emulation |
| public TypeReference[] typeArguments; |
| public TypeBinding[] genericTypeArguments; |
| public FieldDeclaration enumConstant; // for enum constant initializations |
| protected TypeBinding typeExpected; // for <> inference |
| public boolean inferredReturnType; |
| |
| public FakedTrackingVariable closeTracker; // when allocation a Closeable store a pre-liminary tracking variable here |
| private ExpressionContext expressionContext = VANILLA_CONTEXT; |
| |
| //{ObjectTeams: alternate AST in case the creation needs to be redirected through a creator call: |
| private MessageSend roleCreatorCall = null; |
| private NameReference valueParam; // if allocation type has value parameter: synthesized argument for ctor call |
| public boolean isGenerated; |
| @Override |
| public boolean isGenerated() { |
| return this.isGenerated; |
| } |
| // SH} |
| |
| public FlowInfo analyseCode(BlockScope currentScope, FlowContext flowContext, FlowInfo flowInfo) { |
| //{ObjectTeams: redirect? |
| if (this.roleCreatorCall != null) |
| return this.roleCreatorCall.analyseCode(currentScope, flowContext, flowInfo); |
| // SH} |
| // check captured variables are initialized in current context (26134) |
| checkCapturedLocalInitializationIfNecessary((ReferenceBinding)this.binding.declaringClass.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) |
| .unconditionalInits(); |
| // if argument is an AutoCloseable insert info that it *may* be closed (by the target method, i.e.) |
| if (analyseResources && !hasResourceWrapperType) { // allocation of wrapped closeables is analyzed specially |
| 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); |
| } |
| |
| // 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); |
| |
| if (this.binding.declaringClass.isMemberType() && !this.binding.declaringClass.isStatic()) { |
| // allocating a non-static member type without an enclosing instance of parent type |
| // https://bugs.eclipse.org/bugs/show_bug.cgi?id=335845 |
| currentScope.tagAsAccessingEnclosingInstanceStateOf(this.binding.declaringClass.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 |
| } |
| manageEnclosingInstanceAccessIfNecessary(currentScope, flowInfo); |
| manageSyntheticAccessIfNecessary(currentScope, flowInfo); |
| |
| // account for possible exceptions thrown by the constructor |
| flowContext.recordAbruptExit(); // TODO whitelist of ctors that cannot throw any exc.?? |
| |
| return flowInfo; |
| } |
| |
| public void checkCapturedLocalInitializationIfNecessary(ReferenceBinding checkedType, BlockScope currentScope, FlowInfo flowInfo) { |
| if (((checkedType.tagBits & ( TagBits.AnonymousTypeMask|TagBits.LocalTypeMask)) == TagBits.LocalTypeMask) |
| && !currentScope.isDefinedInType(checkedType)) { // only check external allocations |
| NestedTypeBinding nestedType = (NestedTypeBinding) checkedType; |
| SyntheticArgumentBinding[] syntheticArguments = nestedType.syntheticOuterLocalVariables(); |
| if (syntheticArguments != null) |
| for (int i = 0, count = syntheticArguments.length; i < count; i++){ |
| SyntheticArgumentBinding syntheticArgument = syntheticArguments[i]; |
| LocalVariableBinding targetLocal; |
| if ((targetLocal = syntheticArgument.actualOuterLocalVariable) == null) continue; |
| if (targetLocal.declaration != null && !flowInfo.isDefinitelyAssigned(targetLocal)){ |
| currentScope.problemReporter().uninitializedLocalVariable(targetLocal, this); |
| } |
| } |
| } |
| } |
| |
| public Expression enclosingInstance() { |
| return null; |
| } |
| |
| public void generateCode(BlockScope currentScope, CodeStream codeStream, boolean valueRequired) { |
| if (!valueRequired) |
| currentScope.problemReporter().unusedObjectAllocation(this); |
| |
| //{ObjectTeams: redirect? |
| if (this.roleCreatorCall != null) { |
| this.roleCreatorCall.generateCode(currentScope, codeStream, valueRequired); |
| return; |
| } |
| // SH} |
| 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: pass value parameter: |
| if (this.valueParam != null) |
| this.valueParam.generateCode(currentScope, codeStream, true); |
| // 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); |
| } |
| |
| /** |
| * @see org.eclipse.jdt.internal.compiler.lookup.InvocationSite#genericTypeArguments() |
| */ |
| public TypeBinding[] genericTypeArguments() { |
| return this.genericTypeArguments; |
| } |
| |
| public boolean isSuperAccess() { |
| //{ObjectTeams: within a creation method fake visibility: |
| if (isGenerated()) |
| return true; |
| // SH} |
| return false; |
| } |
| |
| public boolean isTypeAccess() { |
| return true; |
| } |
| |
| /* 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. |
| */ |
| public void manageEnclosingInstanceAccessIfNecessary(BlockScope currentScope, FlowInfo flowInfo) { |
| if ((flowInfo.tagBits & FlowInfo.UNREACHABLE_OR_DEAD) != 0) return; |
| ReferenceBinding allocatedTypeErasure = (ReferenceBinding) this.binding.declaringClass.erasure(); |
| |
| // perform some emulation work in case there is some and we are inside a local type only |
| if (allocatedTypeErasure.isNestedType() |
| && currentScope.enclosingSourceType().isLocalType()) { |
| |
| if (allocatedTypeErasure.isLocalType()) { |
| ((LocalTypeBinding) allocatedTypeErasure).addInnerEmulationDependent(currentScope, false); |
| // request cascade of accesses |
| } else { |
| // locally propagate, since we already now the desired shape for sure |
| currentScope.propagateInnerEmulation(allocatedTypeErasure, false); |
| // request cascade of accesses |
| } |
| } |
| } |
| |
| public void manageSyntheticAccessIfNecessary(BlockScope currentScope, FlowInfo flowInfo) { |
| if ((flowInfo.tagBits & FlowInfo.UNREACHABLE_OR_DEAD) != 0) return; |
| // if constructor from parameterized type got found, use the original constructor at codegen time |
| MethodBinding codegenBinding = this.binding.original(); |
| //{ObjectTeams: baseclass decapsulation: |
| if ( codegenBinding.isPrivate() |
| && this.type != null |
| && this.type.getBaseclassDecapsulation().isAllowed()) |
| { |
| return; // avoid tweaking below, which might result in CCE if declaringClass is binary. |
| } |
| // SH} |
| |
| ReferenceBinding declaringClass; |
| if (codegenBinding.isPrivate() && TypeBinding.notEquals(currentScope.enclosingSourceType(), (declaringClass = codegenBinding.declaringClass))) { |
| |
| // from 1.4 on, local type constructor can lose their private flag to ease emulation |
| if ((declaringClass.tagBits & TagBits.IsLocalType) != 0 && currentScope.compilerOptions().complianceLevel >= ClassFileConstants.JDK1_4) { |
| // constructor will not be dumped as private, no emulation required thus |
| codegenBinding.tagBits |= TagBits.ClearPrivateModifier; |
| } else { |
| this.syntheticAccessor = ((SourceTypeBinding) declaringClass).addSyntheticMethod(codegenBinding, isSuperAccess()); |
| currentScope.problemReporter().needToEmulateMethodAccess(codegenBinding, this); |
| } |
| } |
| } |
| |
| public StringBuffer printExpression(int indent, StringBuffer output) { |
| if (this.type != null) { // type null for enum constant initializations |
| output.append("new "); //$NON-NLS-1$ |
| } |
| if (this.typeArguments != null) { |
| output.append('<'); |
| int max = this.typeArguments.length - 1; |
| for (int j = 0; j < max; j++) { |
| this.typeArguments[j].print(0, output); |
| output.append(", ");//$NON-NLS-1$ |
| } |
| this.typeArguments[max].print(0, output); |
| output.append('>'); |
| } |
| if (this.type != null) { // type null for enum constant initializations |
| this.type.printExpression(0, output); |
| } |
| output.append('('); |
| if (this.arguments != null) { |
| for (int i = 0; i < this.arguments.length; i++) { |
| if (i > 0) output.append(", "); //$NON-NLS-1$ |
| this.arguments[i].printExpression(0, output); |
| } |
| } |
| return output.append(')'); |
| } |
| |
| public TypeBinding resolveType(BlockScope scope) { |
| // Propagate the type checking to the arguments, and check if the constructor is defined. |
| final boolean isDiamond = this.type != null && (this.type.bits & ASTNode.IsDiamond) != 0; |
| final CompilerOptions compilerOptions = scope.compilerOptions(); |
| if (this.constant != Constant.NotAConstant) { |
| this.constant = Constant.NotAConstant; |
| if (this.type == null) { |
| // initialization of an enum constant |
| this.resolvedType = scope.enclosingReceiverType(); |
| } else { |
| //{ObjectTeams: support detection of new path.R(): |
| this.type.bits |= IsAllocationType; |
| // SH} |
| this.resolvedType = this.type.resolveType(scope, true /* check bounds*/); |
| if (isDiamond && this.typeExpected == null && this.expressionContext == INVOCATION_CONTEXT && compilerOptions.sourceLevel >= ClassFileConstants.JDK1_8) { |
| if (this.resolvedType != null && this.resolvedType.isValidBinding()) |
| return new PolyTypeBinding(this); |
| } |
| } |
| } else { |
| this.resolvedType = this.type.resolvedType; |
| } |
| |
| if (this.type != null) { |
| checkIllegalNullAnnotation(scope, this.resolvedType); |
| checkParameterizedAllocation: { |
| if (this.type instanceof ParameterizedQualifiedTypeReference) { // disallow new X<String>.Y<Integer>() |
| ReferenceBinding currentType = (ReferenceBinding)this.resolvedType; |
| if (currentType == null) return currentType; |
| 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, this.resolvedType); |
| break; |
| } |
| } |
| } |
| } |
| } |
| // will check for null after args are resolved |
| |
| //{ObjectTeams: replace role allocations: |
| if (!scope.isGeneratedScope()) { |
| // also accept type.resolvedType if a problem was detected during type.resolveType(). |
| TypeBinding typeBinding = this.resolvedType; |
| if (typeBinding != null && (typeBinding instanceof ProblemReferenceBinding)) |
| typeBinding = ((ProblemReferenceBinding)typeBinding).closestMatch(); |
| if ( typeBinding instanceof ReferenceBinding |
| && ((ReferenceBinding)typeBinding).isDirectRole()) |
| return resolveAsRoleCreationExpression((ReferenceBinding) typeBinding, scope); |
| } |
| // SH} |
| |
| // resolve type arguments (for generic constructor call) |
| if (this.typeArguments != null) { |
| int length = this.typeArguments.length; |
| boolean argHasError = compilerOptions.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) { |
| argHasError = true; |
| } |
| if (argHasError && typeReference instanceof Wildcard) { |
| scope.problemReporter().illegalUsageOfWildcard(typeReference); |
| } |
| } |
| if (isDiamond) { |
| scope.problemReporter().diamondNotWithExplicitTypeArguments(this.typeArguments); |
| return null; |
| } |
| if (argHasError) { |
| 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; |
| } |
| } |
| |
| // buffering the arguments' types |
| boolean argsContainCast = false; |
| TypeBinding[] argumentTypes = Binding.NO_PARAMETERS; |
| boolean polyExpressionSeen = false; |
| if (this.arguments != null) { |
| boolean argHasError = false; |
| int length = this.arguments.length; |
| argumentTypes = new TypeBinding[length]; |
| TypeBinding argumentType; |
| for (int i = 0; i < length; i++) { |
| Expression argument = this.arguments[i]; |
| if (argument instanceof CastExpression) { |
| argument.bits |= DisableUnnecessaryCastCheck; // will check later on |
| argsContainCast = true; |
| } |
| argument.setExpressionContext(INVOCATION_CONTEXT); |
| if ((argumentType = argumentTypes[i] = argument.resolveType(scope)) == null) { |
| argHasError = true; |
| } |
| if (argumentType != null && argumentType.kind() == Binding.POLY_TYPE) |
| polyExpressionSeen = true; |
| } |
| if (argHasError) { |
| /* 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 |
| } |
| if (this.resolvedType instanceof ReferenceBinding) { |
| // record a best guess, for clients who need hint about possible constructor match |
| TypeBinding[] pseudoArgs = new TypeBinding[length]; |
| for (int i = length; --i >= 0;) { |
| pseudoArgs[i] = argumentTypes[i] == null ? TypeBinding.NULL : argumentTypes[i]; // replace args with errors with null type |
| } |
| this.binding = scope.findMethod((ReferenceBinding) this.resolvedType, 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; |
| } |
| } |
| } |
| } |
| return this.resolvedType; |
| } |
| } |
| if (this.resolvedType == null || !this.resolvedType.isValidBinding()) { |
| return null; |
| } |
| |
| // null type denotes fake allocation for enum constant inits |
| if (this.type != null && !this.resolvedType.canBeInstantiated()) { |
| scope.problemReporter().cannotInstantiate(this.type, this.resolvedType); |
| return this.resolvedType; |
| } |
| if (isDiamond) { |
| TypeBinding [] inferredTypes = inferElidedTypes(((ParameterizedTypeBinding) this.resolvedType).genericType(), null, argumentTypes, scope); |
| if (inferredTypes == null) { |
| scope.problemReporter().cannotInferElidedTypes(this); |
| return this.resolvedType = null; |
| } |
| this.resolvedType = this.type.resolvedType = scope.environment().createParameterizedType(((ParameterizedTypeBinding) this.resolvedType).genericType(), inferredTypes, ((ParameterizedTypeBinding) this.resolvedType).enclosingType()); |
| } |
| ReferenceBinding allocationType = (ReferenceBinding) this.resolvedType; |
| //{ObjectTeams: may need to instantiate parameters of constructor |
| AnchorMapping anchorMapping = AnchorMapping.setupNewMapping(null, this.arguments, scope); |
| try { |
| // ensure allocation type has methods: |
| Dependencies.ensureBindingState(allocationType, ITranslationStates.STATE_LENV_DONE_FIELDS_AND_METHODS); |
| // SH} |
| this.binding = scope.getConstructor(allocationType, argumentTypes, this); |
| if (polyExpressionSeen) |
| resolvePolyExpressionArguments(scope, this.binding, this.arguments, argumentTypes); |
| |
| if (!this.binding.isValidBinding()) { |
| //{ObjectTeams: baseclass decapsulation? |
| boolean baseclassDecapsulationAllowed = |
| this.type != null // null happens for enum constants |
| && this.type.getBaseclassDecapsulation(allocationType).isAllowed(); |
| if ( this.binding.problemId() == ProblemReasons.NotVisible |
| && ( baseclassDecapsulationAllowed |
| || scope.isGeneratedScope())) |
| { |
| this.binding = ((ProblemMethodBinding)this.binding).closestMatch; |
| if (baseclassDecapsulationAllowed) { |
| scope.enclosingSourceType().roleModel.addInaccessibleBaseMethod(this.binding); |
| scope.problemReporter().decapsulation(this, scope); |
| } |
| } else { |
| // orig: |
| if (this.binding.declaringClass == null) { |
| this.binding.declaringClass = allocationType; |
| } |
| if (this.type != null && !this.type.resolvedType.isValidBinding()) { |
| return null; |
| } |
| scope.problemReporter().invalidConstructor(this, this.binding); |
| return this.resolvedType; |
| // :giro |
| } |
| // SH} |
| } |
| if ((this.binding.tagBits & TagBits.HasMissingType) != 0) { |
| scope.problemReporter().missingTypeInConstructor(this, this.binding); |
| } |
| if (isMethodUseDeprecated(this.binding, scope, true)) |
| scope.problemReporter().deprecatedMethod(this.binding, this); |
| if (checkInvocationArguments(scope, null, allocationType, this.binding, this.arguments, argumentTypes, argsContainCast, this)) { |
| this.bits |= ASTNode.Unchecked; |
| } |
| if (this.typeArguments != null && this.binding.original().typeVariables == Binding.NO_TYPE_VARIABLES) { |
| scope.problemReporter().unnecessaryTypeArgumentsForMethodInvocation(this.binding, this.genericTypeArguments, this.typeArguments); |
| } |
| if (!isDiamond && this.resolvedType.isParameterizedTypeWithActualArguments()) { |
| checkTypeArgumentRedundancy((ParameterizedTypeBinding) this.resolvedType, null, argumentTypes, scope); |
| } |
| if (compilerOptions.isAnnotationBasedNullAnalysisEnabled && (this.binding.tagBits & TagBits.IsNullnessKnown) == 0) { |
| new ImplicitNullAnnotationVerifier(scope.environment(), compilerOptions.inheritNullAnnotations) |
| .checkImplicitNullAnnotations(this.binding, null/*srcMethod*/, false, scope); |
| } |
| //{ObjectTeams: may need to wrap the resolved type |
| this.resolvedType = allocationType = |
| (ReferenceBinding)RoleTypeCreator.maybeWrapUnqualifiedRoleType(allocationType, scope, this); |
| DependentTypeBinding dependentTypeBinding = this.resolvedType.asPlainDependentType(); |
| if (dependentTypeBinding != null) { |
| ITeamAnchor[] anchorPath = dependentTypeBinding._teamAnchor.getBestNamePath(); |
| int len = anchorPath.length; |
| int prefixLen=0; |
| char[][] tokens; |
| if (anchorPath[0] instanceof FieldBinding && ((FieldBinding)anchorPath[0]).isStatic()) { |
| char[][] qname = TypeAnalyzer.compoundNameOfReferenceType(((FieldBinding)anchorPath[0]).declaringClass, true, false); |
| prefixLen = qname.length; |
| len += prefixLen; |
| tokens = new char[len][]; |
| System.arraycopy(qname, 0, tokens, 0, qname.length); |
| } else { |
| tokens = new char[len][]; |
| } |
| for (int i=0; i+prefixLen < len; i++) |
| tokens[i+prefixLen] = anchorPath[i].internalName(); |
| AstGenerator gen = new AstGenerator(this); |
| if (len > 1) |
| this.valueParam = gen.qualifiedNameReference(tokens); |
| else |
| this.valueParam = gen.singleNameReference(tokens[0]); |
| this.valueParam.resolve(scope); |
| } |
| } finally { |
| AnchorMapping.removeCurrentMapping(anchorMapping); |
| } |
| // SH} |
| return allocationType; |
| } |
| |
| /** |
| * Check if 'allocationType' illegally has a top-level null annotation. |
| */ |
| void checkIllegalNullAnnotation(BlockScope scope, TypeBinding allocationType) { |
| if (allocationType != null) { |
| // only check top-level null annotation (annots on details are OK): |
| long nullTagBits = allocationType.tagBits & TagBits.AnnotationNullMASK; |
| if (nullTagBits != 0) { |
| Annotation annotation = this.type.findAnnotation(nullTagBits); |
| scope.problemReporter().nullAnnotationUnsupportedLocation(annotation); |
| } |
| } |
| } |
| |
| public TypeBinding[] inferElidedTypes(ReferenceBinding allocationType, ReferenceBinding enclosingType, TypeBinding[] argumentTypes, final BlockScope scope) { |
| /* Given the allocation type and the arguments to the constructor, see if we can synthesize a generic static factory |
| method that would, given the argument types and the invocation site, manufacture a parameterized object of type allocationType. |
| If we are successful then by design and construction, the parameterization of the return type of the factory method is identical |
| to the types elided in the <>. |
| */ |
| MethodBinding factory = scope.getStaticFactory(allocationType, enclosingType, argumentTypes, this); |
| if (factory instanceof ParameterizedGenericMethodBinding && factory.isValidBinding()) { |
| ParameterizedGenericMethodBinding genericFactory = (ParameterizedGenericMethodBinding) factory; |
| this.inferredReturnType = genericFactory.inferredReturnType; |
| return ((ParameterizedTypeBinding)factory.returnType).arguments; |
| } |
| return null; |
| } |
| |
| public void checkTypeArgumentRedundancy(ParameterizedTypeBinding allocationType, ReferenceBinding enclosingType, TypeBinding[] argumentTypes, final BlockScope scope) { |
| ProblemReporter reporter = scope.problemReporter(); |
| if ((reporter.computeSeverity(IProblem.RedundantSpecificationOfTypeArguments) == ProblemSeverities.Ignore) || scope.compilerOptions().sourceLevel < ClassFileConstants.JDK1_7) return; |
| if (allocationType.arguments == null) return; // raw binding |
| if (this.genericTypeArguments != null) return; // diamond can't occur with explicit type args for constructor |
| if (argumentTypes == Binding.NO_PARAMETERS && this.typeExpected instanceof ParameterizedTypeBinding) { |
| ParameterizedTypeBinding expected = (ParameterizedTypeBinding) this.typeExpected; |
| if (expected.arguments != null && allocationType.arguments.length == expected.arguments.length) { |
| // check the case when no ctor takes no params and inference uses the expected type directly |
| // eg. X<String> x = new X<String>() |
| int i; |
| for (i = 0; i < allocationType.arguments.length; i++) { |
| if (TypeBinding.notEquals(allocationType.arguments[i], expected.arguments[i])) |
| break; |
| } |
| if (i == allocationType.arguments.length) { |
| reporter.redundantSpecificationOfTypeArguments(this.type, allocationType.arguments); |
| return; |
| } |
| } |
| } |
| TypeBinding [] inferredTypes = inferElidedTypes(allocationType.genericType(), enclosingType, argumentTypes, scope); |
| if (inferredTypes == null) { |
| return; |
| } |
| for (int i = 0; i < inferredTypes.length; i++) { |
| if (TypeBinding.notEquals(inferredTypes[i], allocationType.arguments[i])) |
| return; |
| } |
| reporter.redundantSpecificationOfTypeArguments(this.type, allocationType.arguments); |
| } |
| |
| //{ObjectTeams: replace with and resolved role creation expression: |
| private TypeBinding resolveAsRoleCreationExpression(ReferenceBinding typeBinding, BlockScope scope) { |
| RoleModel roleModel = typeBinding.roleModel; |
| ReferenceBinding roleClass = roleModel.getClassPartBinding(); |
| // creating a role that should not be instantiated (OTJLD 2.4.3)? |
| if (typeBinding.isRole()) { |
| ReferenceBinding subRole = roleClass.roleModel._supercededBy; |
| if (subRole != null) |
| scope.problemReporter().instantiatingSupercededRole(this, subRole); |
| } |
| |
| if ( !StateMemento.hasMethodResolveStarted(typeBinding) |
| && roleClass != null) |
| { |
| Dependencies.ensureRoleState( |
| roleClass.roleModel, |
| ITranslationStates.STATE_METHODS_CREATED); // forces creation method to be created |
| } |
| |
| if (!RoleTypeBinding.isRoleWithExplicitAnchor(typeBinding)) { |
| ReferenceBinding enclosingType = scope.enclosingReceiverType(); |
| if (scope.methodScope().isStatic) |
| enclosingType = enclosingType.enclosingType(); |
| ReferenceBinding targetEnclosing = roleClass != null |
| ? roleClass.enclosingType() |
| : roleModel.getTeamModel().getBinding(); |
| while (enclosingType != null && TypeBinding.notEquals(enclosingType.original(), targetEnclosing)) { |
| enclosingType = enclosingType.enclosingType(); |
| } |
| if (enclosingType == null) { |
| // create a dummy binding for error reporting (just need declaringClass): |
| this.binding = new MethodBinding(0, Binding.NO_PARAMETERS, Binding.NO_EXCEPTIONS, typeBinding); |
| scope.problemReporter().noSuchEnclosingInstance( |
| typeBinding.enclosingType(), this, false); |
| return null; |
| } |
| } |
| |
| if (roleModel.hasBaseclassProblem()) { |
| scope.methodScope().referenceContext.tagAsHavingErrors(); |
| return null; // creator is not generated. |
| } |
| |
| this.roleCreatorCall = CopyInheritance.createConstructorMethodInvocationExpression(scope, this); |
| if (this.roleCreatorCall == null) |
| return null; |
| |
| this.resolvedType = this.roleCreatorCall.resolveType(scope); |
| if (typeBinding.isParameterizedType()) { |
| this.resolvedType = scope.environment().createParameterizedType( |
| (ReferenceBinding)this.resolvedType, |
| ((ParameterizedTypeBinding)typeBinding).arguments, |
| this.resolvedType.enclosingType()); |
| } |
| |
| // UI needs to find the method in this.binding: |
| MethodBinding origBinding = this.roleCreatorCall.binding; |
| if (origBinding != null && origBinding.model != null && origBinding.model._srcCtor != null) |
| this.binding = origBinding.model._srcCtor; |
| else |
| this.binding = origBinding; |
| |
| return this.resolvedType; |
| } |
| // SH} |
| |
| public void setActualReceiverType(ReferenceBinding receiverType) { |
| // ignored |
| } |
| |
| public void setDepth(int i) { |
| // ignored |
| } |
| |
| public void setFieldIndex(int i) { |
| // ignored |
| } |
| |
| public void traverse(ASTVisitor visitor, BlockScope scope) { |
| //{ObjectTeams: alternate ast |
| if (this.roleCreatorCall != null) { |
| this.roleCreatorCall.traverse(visitor, scope); |
| return; |
| } |
| // SH} |
| |
| if (visitor.visit(this, 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) { // enum constant scenario |
| this.type.traverse(visitor, scope); |
| } |
| if (this.arguments != null) { |
| for (int i = 0, argumentsLength = this.arguments.length; i < argumentsLength; i++) |
| this.arguments[i].traverse(visitor, scope); |
| } |
| } |
| visitor.endVisit(this, scope); |
| } |
| /** |
| * @see org.eclipse.jdt.internal.compiler.ast.Expression#setExpectedType(org.eclipse.jdt.internal.compiler.lookup.TypeBinding) |
| */ |
| public void setExpectedType(TypeBinding expectedType) { |
| this.typeExpected = expectedType; |
| } |
| |
| public void setExpressionContext(ExpressionContext context) { |
| this.expressionContext = context; |
| } |
| |
| public boolean isCompatibleWith(TypeBinding left, Scope scope) { |
| return this.type.resolvedType != null && left.actualType() != null && this.type.resolvedType.actualType().isCompatibleWith(left.actualType()); |
| } |
| |
| public boolean isPolyExpression() { |
| return (this.expressionContext == ASSIGNMENT_CONTEXT || this.expressionContext == INVOCATION_CONTEXT) && |
| this.type != null && (this.type.bits & ASTNode.IsDiamond) != 0; |
| } |
| /** |
| * @see org.eclipse.jdt.internal.compiler.lookup.InvocationSite#expectedType() |
| */ |
| public TypeBinding expectedType() { |
| return this.typeExpected; |
| } |
| |
| public boolean statementExpression() { |
| return true; |
| } |
| |
| } |