| /******************************************************************************* |
| * Copyright (c) 2000, 2009 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 |
| * $Id: ExplicitConstructorCall.java 23405 2010-02-03 17:02:18Z stephan $ |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| * Fraunhofer FIRST - extended API and implementation |
| * Technical University Berlin - extended API and implementation |
| *******************************************************************************/ |
| package org.eclipse.jdt.internal.compiler.ast; |
| |
| import org.eclipse.jdt.core.compiler.CharOperation; |
| 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.lookup.*; |
| import org.eclipse.objectteams.otdt.core.compiler.IOTConstants; |
| import org.eclipse.objectteams.otdt.internal.core.compiler.ast.TsuperReference; |
| import org.eclipse.objectteams.otdt.internal.core.compiler.bytecode.BytecodeTransformer; |
| 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.DeclaredLifting; |
| 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.model.RoleModel; |
| import org.eclipse.objectteams.otdt.internal.core.compiler.model.TeamModel; |
| import org.eclipse.objectteams.otdt.internal.core.compiler.util.AstEdit; |
| import org.eclipse.objectteams.otdt.internal.core.compiler.util.AstGenerator; |
| import org.eclipse.objectteams.otdt.internal.core.compiler.util.TSuperHelper; |
| |
| /** |
| * OTDT changes: |
| * |
| * What: Additional kind Tsuper. (Note, that Base is handled by BaseAllocationExpression). |
| * How: A tsuper() call is treated mostly like a this call. |
| * The flag Tsuper signals, that a marker arg has to be added to select tsuper versions. |
| * |
| * |
| * What: Manage super calls in constructors with declared lifting. |
| * Why: A self call in such a constructor could pass the lifted version of the argument. |
| * How: See checkLiftingTeamConstructor() and class comment in class Lifting. |
| * |
| * |
| * What: Management of chained tsuper argument. |
| * Why: If a constructor is copied, an additional argument is added to its signature to |
| * allow explicit selection for tsuper calls. |
| * Also any constructor to be invoked via this() will be augmented with a marker arg. |
| * Therefor in addition to the signatures, the this() call in a copied constructor |
| * will need to be augmented by a marker arg. |
| * A value for this marker arg can be passed through from the provided argument. |
| * Example: |
| * <pre> |
| * class T1.R { |
| * R(int i) {..} |
| * R() { |
| * this(42); |
| * moreStatements(); |
| * } |
| * } |
| * </pre> |
| * when copied to T2 extends T1 becomes: |
| * <pre> |
| * class T2.R { |
| * R(int i, TSuper_OT$T1 _OT$marker) {..} |
| * R(TSuper_OT$T1 _OT$marker) { |
| * this(42, _OT$marker); |
| * moreStatements(); |
| * } |
| * } |
| * </pre> |
| * Participants: |
| * chainTSuperMarkerArgPos: |
| * mediate between resolve(), where the situation is recognized and generateCode(). |
| * in class BytecodeTransformer: |
| * + addChainingPlaceholder: |
| * prepare the byte code so it can easily be changed. |
| * + adjustCode(), replaceChainArg(): |
| * recognized the characteristic byte code sequence produced before, and patch it. |
| * |
| * @version $Id: ExplicitConstructorCall.java 23405 2010-02-03 17:02:18Z stephan $ |
| */ |
| public class ExplicitConstructorCall extends Statement implements InvocationSite { |
| |
| public Expression[] arguments; |
| public Expression qualification; |
| public MethodBinding binding; // exact binding resulting from lookup |
| MethodBinding syntheticAccessor; // synthetic accessor for inner-emulation |
| public int accessMode; |
| public TypeReference[] typeArguments; |
| public TypeBinding[] genericTypeArguments; |
| |
| public final static int ImplicitSuper = 1; |
| public final static int Super = 2; |
| public final static int This = 3; |
| //{ObjectTeams: new constant for TSuper |
| public static final int Tsuper = 4; |
| // SH} |
| |
| //{ObjectTeams: |
| // if this is a super() or this() call within a constructor record the position |
| // that an additional tsuper-mark-arg of this constructor will receive |
| // when being copied. |
| private int chainTSuperMarkArgPos = -1; |
| // SH} |
| |
| public VariableBinding[][] implicitArguments; |
| |
| // TODO Remove once DOMParser is activated |
| public int typeArgumentsSourceStart; |
| |
| public ExplicitConstructorCall(int accessMode) { |
| this.accessMode = accessMode; |
| } |
| |
| public FlowInfo analyseCode(BlockScope currentScope, FlowContext flowContext, FlowInfo flowInfo) { |
| // must verify that exceptions potentially thrown by this expression are caught in the method. |
| |
| try { |
| ((MethodScope) currentScope).isConstructorCall = true; |
| |
| // process enclosing instance |
| if (this.qualification != null) { |
| flowInfo = |
| this.qualification |
| .analyseCode(currentScope, flowContext, flowInfo) |
| .unconditionalInits(); |
| } |
| // process arguments |
| if (this.arguments != null) { |
| for (int i = 0, max = this.arguments.length; i < max; i++) { |
| flowInfo = |
| this.arguments[i] |
| .analyseCode(currentScope, flowContext, flowInfo) |
| .unconditionalInits(); |
| } |
| } |
| |
| ReferenceBinding[] thrownExceptions; |
| if ((thrownExceptions = this.binding.thrownExceptions) != Binding.NO_EXCEPTIONS) { |
| 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 exceptions |
| flowContext.checkExceptionHandlers( |
| thrownExceptions, |
| (this.accessMode == ExplicitConstructorCall.ImplicitSuper) |
| ? (ASTNode) currentScope.methodScope().referenceContext |
| : (ASTNode) this, |
| flowInfo, |
| currentScope); |
| } |
| manageEnclosingInstanceAccessIfNecessary(currentScope, flowInfo); |
| manageSyntheticAccessIfNecessary(currentScope, flowInfo); |
| return flowInfo; |
| } finally { |
| ((MethodScope) currentScope).isConstructorCall = false; |
| } |
| } |
| |
| /** |
| * Constructor call code generation |
| * |
| * @param currentScope org.eclipse.jdt.internal.compiler.lookup.BlockScope |
| * @param codeStream org.eclipse.jdt.internal.compiler.codegen.CodeStream |
| */ |
| public void generateCode(BlockScope currentScope, CodeStream codeStream) { |
| if ((this.bits & ASTNode.IsReachable) == 0) { |
| return; |
| } |
| try { |
| ((MethodScope) currentScope).isConstructorCall = true; |
| |
| int pc = codeStream.position; |
| codeStream.aload_0(); |
| |
| MethodBinding codegenBinding = this.binding.original(); |
| ReferenceBinding targetType = codegenBinding.declaringClass; |
| |
| // special name&ordinal argument generation for enum constructors |
| if (targetType.erasure().id == TypeIds.T_JavaLangEnum || targetType.isEnum()) { |
| codeStream.aload_1(); // pass along name param as name arg |
| codeStream.iload_2(); // pass along ordinal param as ordinal arg |
| } |
| // handling innerclass constructor invocation |
| // handling innerclass instance allocation - enclosing instance arguments |
| if (targetType.isNestedType()) { |
| codeStream.generateSyntheticEnclosingInstanceValues( |
| currentScope, |
| targetType, |
| (this.bits & ASTNode.DiscardEnclosingInstance) != 0 ? null : this.qualification, |
| this); |
| } |
| //FIXME(SH): pass value parameters?! |
| // generate arguments |
| generateArguments(this.binding, this.arguments, currentScope, codeStream); |
| |
| //{ObjectTeams: prepare chaining of tsuper marker arg: |
| if (this.chainTSuperMarkArgPos > -1) |
| BytecodeTransformer.addChainingPlaceholder(currentScope, codeStream, this.chainTSuperMarkArgPos); |
| // SH} |
| |
| // handling innerclass instance allocation - outer local arguments |
| if (targetType.isNestedType()) { |
| codeStream.generateSyntheticOuterArgumentValues( |
| currentScope, |
| targetType, |
| this); |
| } |
| if (this.syntheticAccessor != null) { |
| // 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 */); |
| } else { |
| codeStream.invoke(Opcodes.OPC_invokespecial, codegenBinding, null /* default declaringClass */); |
| } |
| codeStream.recordPositionsFrom(pc, this.sourceStart); |
| } finally { |
| ((MethodScope) currentScope).isConstructorCall = false; |
| } |
| } |
| |
| /** |
| * @see org.eclipse.jdt.internal.compiler.lookup.InvocationSite#genericTypeArguments() |
| */ |
| public TypeBinding[] genericTypeArguments() { |
| return this.genericTypeArguments; |
| } |
| |
| public boolean isImplicitSuper() { |
| return (this.accessMode == ExplicitConstructorCall.ImplicitSuper); |
| } |
| |
| //{ObjectTeams |
| public boolean isTsuperAccess() { |
| return this.accessMode == Tsuper; |
| } |
| // Markus Witte} |
| public boolean isSuperAccess() { |
| // {ObjectTeams |
| /* orig: |
| return this.accessMode != ExplicitConstructorCall.This; |
| :giro */ |
| return (this.accessMode == ExplicitConstructorCall.Super) || (this.accessMode == ExplicitConstructorCall.ImplicitSuper); |
| // Markus Witte} |
| } |
| |
| 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. |
| */ |
| void manageEnclosingInstanceAccessIfNecessary(BlockScope currentScope, FlowInfo flowInfo) { |
| ReferenceBinding superTypeErasure = (ReferenceBinding) this.binding.declaringClass.erasure(); |
| |
| if ((flowInfo.tagBits & FlowInfo.UNREACHABLE) == 0) { |
| // perform some emulation work in case there is some and we are inside a local type only |
| if (superTypeErasure.isNestedType() |
| && currentScope.enclosingSourceType().isLocalType()) { |
| |
| if (superTypeErasure.isLocalType()) { |
| ((LocalTypeBinding) superTypeErasure).addInnerEmulationDependent(currentScope, this.qualification != null); |
| } else { |
| // locally propagate, since we already now the desired shape for sure |
| currentScope.propagateInnerEmulation(superTypeErasure, this.qualification != null); |
| } |
| } |
| } |
| } |
| |
| public void manageSyntheticAccessIfNecessary(BlockScope currentScope, FlowInfo flowInfo) { |
| if ((flowInfo.tagBits & FlowInfo.UNREACHABLE) == 0) { |
| // if constructor from parameterized type got found, use the original constructor at codegen time |
| MethodBinding codegenBinding = this.binding.original(); |
| |
| // perform some emulation work in case there is some and we are inside a local type only |
| if (this.binding.isPrivate() && this.accessMode != ExplicitConstructorCall.This) { |
| ReferenceBinding 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 printStatement(int indent, StringBuffer output) { |
| printIndent(indent, output); |
| if (this.qualification != null) this.qualification.printExpression(0, output).append('.'); |
| 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('>'); |
| } |
| //{ObjectTeams |
| if (this.accessMode == ExplicitConstructorCall.Tsuper) { |
| output.append("tsuper("); //$NON-NLS-1$ |
| } else |
| // Markus Witte} |
| if (this.accessMode == ExplicitConstructorCall.This) { |
| output.append("this("); //$NON-NLS-1$ |
| } else { |
| output.append("super("); //$NON-NLS-1$ |
| } |
| if (this.arguments != null) { |
| //{ObjectTeams: hide marker arg: |
| int len = this.arguments.length; |
| if ( this.accessMode == ExplicitConstructorCall.Tsuper |
| && TSuperHelper.isMarkerArg(this.arguments[len-1])) |
| len--; |
| /* orig: |
| for (int i = 0; i < this.arguments.length; i++) { |
| :giro */ |
| for (int i = 0; i < len; i++) { |
| // SH} |
| if (i > 0) output.append(", "); //$NON-NLS-1$ |
| this.arguments[i].printExpression(0, output); |
| } |
| } |
| return output.append(");"); //$NON-NLS-1$ |
| } |
| |
| public void resolve(BlockScope scope) { |
| // the return type should be void for a constructor. |
| // the test is made into getConstructor |
| |
| // mark the fact that we are in a constructor call..... |
| // unmark at all returns |
| MethodScope methodScope = scope.methodScope(); |
| try { |
| AbstractMethodDeclaration methodDeclaration = methodScope.referenceMethod(); |
| if (methodDeclaration == null |
| || !methodDeclaration.isConstructor() |
| || ((ConstructorDeclaration) methodDeclaration).constructorCall != this) { |
| scope.problemReporter().invalidExplicitConstructorCall(this); |
| // fault-tolerance |
| if (this.qualification != null) { |
| this.qualification.resolveType(scope); |
| } |
| if (this.typeArguments != null) { |
| for (int i = 0, max = this.typeArguments.length; i < max; i++) { |
| this.typeArguments[i].resolveType(scope, true /* check bounds*/); |
| } |
| } |
| if (this.arguments != null) { |
| for (int i = 0, max = this.arguments.length; i < max; i++) { |
| this.arguments[i].resolveType(scope); |
| } |
| } |
| return; |
| } |
| methodScope.isConstructorCall = true; |
| ReferenceBinding receiverType = scope.enclosingReceiverType(); |
| boolean rcvHasError = false; |
| //{ObjectTeams: treat tsuper like this calls: |
| /* @original |
| if (this.accessMode != ExplicitConstructorCall.This) { |
| */ |
| if (isSuperAccess()) { |
| // Markus Witte} |
| receiverType = receiverType.superclass(); |
| TypeReference superclassRef = scope.referenceType().superclass; |
| if (superclassRef != null && superclassRef.resolvedType != null && !superclassRef.resolvedType.isValidBinding()) { |
| rcvHasError = true; |
| } |
| } |
| //{ObjectTeams: compiling org.objectteams.Team$__OT__Confined ? |
| if (receiverType == null) { |
| if (CharOperation.equals(scope.enclosingSourceType().compoundName, |
| IOTConstants.ORG_OBJECTTEAMS_TEAM_OTCONFINED)) |
| receiverType = scope.getJavaLangObject(); // use this supertype only this one time! |
| else // testharness for checking a hypothesis: |
| scope.problemReporter().missingImplementation(this, "Detected null receiverType"); //$NON-NLS-1$ |
| // throw new InternalCompilerError("caught you"); |
| } |
| // SH} |
| if (receiverType != null) { |
| // prevent (explicit) super constructor invocation from within enum |
| if (this.accessMode == ExplicitConstructorCall.Super && receiverType.erasure().id == TypeIds.T_JavaLangEnum) { |
| scope.problemReporter().cannotInvokeSuperConstructorInEnum(this, methodScope.referenceMethod().binding); |
| } |
| // qualification should be from the type of the enclosingType |
| if (this.qualification != null) { |
| if (this.accessMode != ExplicitConstructorCall.Super) { |
| scope.problemReporter().unnecessaryEnclosingInstanceSpecification( |
| this.qualification, |
| receiverType); |
| } |
| if (!rcvHasError) { |
| ReferenceBinding enclosingType = receiverType.enclosingType(); |
| if (enclosingType == null) { |
| scope.problemReporter().unnecessaryEnclosingInstanceSpecification(this.qualification, receiverType); |
| this.bits |= ASTNode.DiscardEnclosingInstance; |
| } else { |
| TypeBinding qTb = this.qualification.resolveTypeExpecting(scope, enclosingType); |
| this.qualification.computeConversion(scope, qTb, qTb); |
| } |
| } |
| } |
| } |
| // resolve type arguments (for generic constructor call) |
| if (this.typeArguments != null) { |
| boolean argHasError = scope.compilerOptions().sourceLevel < ClassFileConstants.JDK1_5; |
| int length = this.typeArguments.length; |
| 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 (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; |
| } |
| } |
| // arguments buffering for the method lookup |
| TypeBinding[] argumentTypes = Binding.NO_PARAMETERS; |
| boolean argsContainCast = false; |
| if (this.arguments != null) { |
| boolean argHasError = false; // typeChecks all arguments |
| int length = this.arguments.length; |
| 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 |
| argsContainCast = true; |
| } |
| if ((argumentTypes[i] = argument.resolveType(scope)) == null) { |
| argHasError = true; |
| } |
| } |
| if (argHasError) { |
| if (receiverType == null) { |
| return; |
| } |
| // record a best guess, for clients who need hint about possible contructor 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(receiverType, TypeConstants.INIT, pseudoArgs, this); |
| 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; |
| } |
| } else if (receiverType.erasure().id == TypeIds.T_JavaLangEnum) { |
| // TODO (philippe) get rid of once well-known binding is available |
| argumentTypes = new TypeBinding[] { scope.getJavaLangString(), TypeBinding.INT }; |
| } |
| if (receiverType == null) { |
| return; |
| } |
| //{ObjectTeams: type wrapping for arguments and error handling for tsuper calls. |
| /* @original: |
| if ((this.binding = scope.getConstructor(receiverType, argumentTypes, this)).isValidBinding()) { |
| */ |
| // ensure that types in signatures of teams and roles are wrapped: |
| if (receiverType.isTeam() || receiverType.isRole()) |
| Dependencies.ensureBindingState(receiverType, ITranslationStates.STATE_TYPES_ADJUSTED); |
| |
| // additional error handling for tsuper calls: |
| if (this.accessMode == Tsuper) { |
| if (!receiverType.isRole()) { |
| scope.problemReporter().tsuperOutsideRole( |
| methodScope.referenceMethod(), |
| this, |
| receiverType); |
| return; |
| } |
| RoleModel role = receiverType.roleModel; |
| if (role.getImplicitSuperRole() == null) { |
| scope.problemReporter().tsuperCallWithoutTsuperRole( |
| receiverType, |
| this); |
| return; |
| } |
| if (role._refinesExtends) { |
| scope.problemReporter().tsuperCtorDespiteRefinedExtends(this, receiverType.superclass()); |
| return; |
| } |
| } |
| |
| Expression receiver = null; |
| switch (this.accessMode) { |
| case This : receiver = new ThisReference(this.sourceStart,this.sourceEnd); break; |
| case ImplicitSuper: |
| case Super : receiver = new SuperReference(this.sourceStart,this.sourceEnd); break; |
| case Tsuper: receiver = new TsuperReference(this.sourceStart,this.sourceEnd); break; |
| } |
| |
| // find the constructor: |
| AnchorMapping anchorMapping = null; |
| try { |
| anchorMapping = AnchorMapping.setupNewMapping( |
| receiver, this.arguments, scope); |
| /*~orig~*/ this.binding = scope.getConstructor(receiverType, argumentTypes, this); |
| |
| // check different reasons for changing the accessMode |
| |
| MethodBinding tsuperMethod = null; |
| TypeBinding[] tsuperArgs = null; |
| |
| if (!this.binding.isValidBinding()) |
| { |
| if (this.accessMode == Tsuper) { |
| // tsuper version not found. Try without marker arg: |
| // (marker arg is only added when overriding a tsuper version!) |
| int len = argumentTypes.length-1; |
| TypeBinding[] strippedArgumentTypes = new TypeBinding[len]; |
| System.arraycopy(argumentTypes, 0, strippedArgumentTypes, 0, len); |
| MethodBinding strippedMethod = scope.getConstructor(receiverType, strippedArgumentTypes, this); |
| if ( strippedMethod.isValidBinding() |
| && strippedMethod.copyInheritanceSrc != null) |
| { |
| this.binding = strippedMethod; |
| argumentTypes = strippedArgumentTypes; |
| System.arraycopy ( |
| this.arguments, 0, |
| this.arguments = new Expression[len], 0, len); |
| } |
| } else if (accessingSuperteam(scope)) |
| { |
| // is a copied version present (maybe we just copied it)? |
| // invoke it as tsuper rather than super. |
| TeamModel teamModel = scope.enclosingSourceType().getTeamModel(); |
| |
| tsuperArgs = AstEdit.extendTypeArray(argumentTypes, teamModel.getMarkerInterfaceBinding(scope)); |
| tsuperMethod = scope.getConstructor(receiverType, tsuperArgs, this); |
| } |
| } else if ( accessingSuperteam(scope) |
| && methodDeclaration.binding != null |
| && RoleTypeBinding.hasNonExternalizedRoleParameter(methodDeclaration.binding)) |
| { |
| // all constructors with role parameters need to be copied, |
| // because subteams with declared lifting require control over all code |
| // in the super-call chain. |
| if (RoleTypeBinding.hasNonExternalizedRoleParameter(this.binding)) |
| { |
| boolean needsLifting = ((ConstructorDeclaration)methodDeclaration).needsLifting; |
| tsuperMethod = DeclaredLifting.copyTeamConstructorForDeclaredLifting( |
| scope, this.binding, argumentTypes, needsLifting); |
| } else { |
| tsuperMethod = DeclaredLifting.maybeCreateTurningCtor( |
| scope.referenceType(), |
| this.binding, |
| new AstGenerator(this.sourceStart, this.sourceEnd)); |
| } |
| if (tsuperMethod != null) |
| tsuperArgs = AstEdit.extendTypeArray( |
| argumentTypes, |
| tsuperMethod.parameters[tsuperMethod.parameters.length-1]); |
| } |
| if ( tsuperMethod != null |
| && tsuperMethod.isValidBinding() |
| && tsuperMethod != this.binding |
| && tsuperMethod != methodDeclaration.binding) |
| { |
| updateFromTSuper(scope.enclosingSourceType().superclass(), |
| tsuperArgs[tsuperArgs.length-1]); |
| this.binding = tsuperMethod; |
| argumentTypes = tsuperArgs; |
| } |
| |
| // perform any adjustments needed for declared lifting in team constructors: |
| if (this.binding.problemId() == ProblemReasons.NotFound) |
| argumentTypes = checkLiftingTeamCtor(scope, argumentTypes, (ConstructorDeclaration)methodDeclaration); |
| } finally { |
| AnchorMapping.removeCurrentMapping(anchorMapping); |
| } |
| |
| |
| /*~orig~*/ if (this.binding.isValidBinding()) { |
| |
| // record chainTSuperMarkArgPos if needed |
| if ( scope.enclosingSourceType().isRole() |
| && !TSuperHelper.isTSuper(this.binding) |
| && this.binding.declaringClass == scope.enclosingSourceType()) |
| { |
| MethodBinding enclosingMethod = methodDeclaration.binding; |
| if (enclosingMethod != null) |
| this.chainTSuperMarkArgPos = enclosingMethod.parameters.length+enclosingMethod.declaringClass.depth()+1; |
| } |
| // SH} |
| if ((this.binding.tagBits & TagBits.HasMissingType) != 0) { |
| if (!methodScope.enclosingSourceType().isAnonymousType()) { |
| scope.problemReporter().missingTypeInConstructor(this, this.binding); |
| } |
| } |
| if (isMethodUseDeprecated(this.binding, scope, this.accessMode != ExplicitConstructorCall.ImplicitSuper)) { |
| scope.problemReporter().deprecatedMethod(this.binding, this); |
| } |
| if (checkInvocationArguments(scope, null, receiverType, this.binding, this.arguments, argumentTypes, argsContainCast, this)) { |
| this.bits |= ASTNode.Unchecked; |
| } |
| if (this.binding.isOrEnclosedByPrivateType()) { |
| this.binding.original().modifiers |= ExtraCompilerModifiers.AccLocallyUsed; |
| } |
| if (this.typeArguments != null |
| && this.binding.original().typeVariables == Binding.NO_TYPE_VARIABLES) { |
| scope.problemReporter().unnecessaryTypeArgumentsForMethodInvocation(this.binding, this.genericTypeArguments, this.typeArguments); |
| } |
| } else { |
| if (this.binding.declaringClass == null) { |
| this.binding.declaringClass = receiverType; |
| } |
| if (rcvHasError) |
| return; |
| //{ObjectTeams: revert augmented signature for error reporting: |
| if (this.accessMode == Tsuper) { |
| int len = this.binding.parameters.length; |
| System.arraycopy( |
| this.binding.parameters, 0, |
| this.binding.parameters = new TypeBinding[len-1], 0, |
| len-1); |
| this.binding.declaringClass = receiverType.roleModel.getImplicitSuperRole().getBinding(); |
| } |
| // SH} |
| scope.problemReporter().invalidConstructor(this, this.binding); |
| } |
| } finally { |
| methodScope.isConstructorCall = false; |
| } |
| } |
| |
| //{ObjectTeams: helper functions for lifting in constructors: |
| /** |
| * Is this ExplicitConstructorCall an access to a constructor from a super team? |
| */ |
| private boolean accessingSuperteam(BlockScope scope) { |
| return isSuperAccess() |
| && scope.enclosingSourceType().isTeam(); |
| } |
| |
| /** |
| * Given that regular lookup did not find a suitable ctor to call, try: |
| * 1.: are we just providing an additional marker arg, |
| * which should be added to an existing constructor? |
| * 2.: would an existing constructor match if we lifted our arguments? |
| * |
| * @param scope enclosing method scope |
| * @param argumentTypes types of argument expressions of this self call |
| * @return possibly adjusted version of argumentTypes |
| */ |
| private TypeBinding[] checkLiftingTeamCtor(BlockScope scope, TypeBinding[] argumentTypes, ConstructorDeclaration ctorDecl) |
| { |
| if (!scope.referenceType().isTeam()) |
| return argumentTypes; |
| ReferenceBinding superTeam = scope.enclosingSourceType().superclass(); |
| MethodBinding[] ctors = superTeam.getMethods(TypeConstants.INIT); |
| if (ctors != null) { |
| for (int i = 0; i < ctors.length; i++) { |
| MethodBinding ctor = ctors[i]; |
| if (isChainingMatch(this.arguments, ctor.parameters)) { |
| if (this.accessMode == This) { |
| // At this spot we know: Lifting.prepareLiftingArg had added a marker arg. |
| // Now create a chaining ctor for this self call: |
| // (only now we have the types of all actual arguments). |
| MethodBinding newBinding; |
| newBinding = DeclaredLifting.copyTeamConstructorForDeclaredLifting( |
| scope, ctor, argumentTypes, ctorDecl.needsLifting); |
| if (newBinding != null) |
| this.binding = newBinding; |
| break; |
| } |
| } else { |
| if (isSuperAccess()) { |
| TypeBinding[] adjustedArgtypes = getAdjustedArgTypes( |
| scope.referenceType().getTeamModel(), |
| scope, |
| this.arguments, |
| ctor.parameters, |
| ctor); |
| if (adjustedArgtypes != null) { |
| // lifting must be performed. Cannot do it before self-calling, |
| // so let the called ctor do the lifting: |
| // ie., create a copy of the super ctor with lifting: |
| |
| MethodBinding newBinding; |
| newBinding = DeclaredLifting.copyTeamConstructorForDeclaredLifting( |
| scope, ctor, adjustedArgtypes, ctorDecl.needsLifting); |
| if (newBinding != null) { |
| this.binding = newBinding; |
| TypeBinding markerType = this.binding.parameters[this.binding.parameters.length-1]; |
| updateFromTSuper(superTeam, markerType); |
| argumentTypes = AstEdit.extendTypeArray(argumentTypes, markerType); |
| } |
| break; |
| } |
| } |
| } |
| } |
| } |
| return argumentTypes; |
| } |
| |
| /** Is this self call requesting a ctor with added marker arg? */ |
| private boolean isChainingMatch(Expression[] provided, TypeBinding[] expected) { |
| if (provided == null) |
| return expected.length == 0; |
| if (provided.length != expected.length+1) |
| return false; |
| for (int i = 0; i < expected.length; i++) { |
| if (!provided[i].resolvedType.isCompatibleWith(expected[i])) |
| return false; |
| } |
| return TSuperHelper.isMarkerArg(provided[provided.length-1]); |
| } |
| /** Would types match if we use lifting? |
| * If so, also add a marker arg to the parameters. |
| */ |
| private TypeBinding[] getAdjustedArgTypes( |
| TeamModel teamModel, BlockScope scope, Expression[] provided, TypeBinding[] expected, MethodBinding method) |
| { |
| if (provided == null) |
| { |
| if (expected.length == 0) |
| return new TypeBinding[0]; |
| else |
| return null; |
| } |
| if (provided.length != expected.length) |
| return null; |
| TypeBinding[] adjustedArgtypes = new TypeBinding[expected.length+1]; |
| for (int i = 0; i < expected.length; i++) { |
| adjustedArgtypes[i] = this.arguments[i].resolvedType; |
| |
| TypeBinding param = expected[i]; |
| TypeBinding arg = provided[i].resolvedType; |
| if (AnchorMapping.areTypesEqual(param, arg, method) || arg.isCompatibleWith(param)) // Note: param-anchored types must be exact matches here (limitation) |
| continue; |
| if (TSuperHelper.isMarkerInterface(param)) |
| return null; |
| TypeBinding roleType = TeamModel.getRoleToLiftTo(scope, arg, param, false, /*location*/provided[i]); |
| if (roleType == null) |
| return null; |
| // FIXME(SH): should roleType be stored in adjustedArgtypes?? |
| } |
| adjustedArgtypes[expected.length] = teamModel.markerInterface.binding; |
| return adjustedArgtypes; |
| } |
| /** |
| * The target method exists in the current team class, discriminated by a proper marker arg. |
| * Update this self call to use the local version as tsuper (arguments and accessMode). |
| */ |
| private void updateFromTSuper(ReferenceBinding superTeam, |
| TypeBinding markerType) |
| { |
| Expression markerArg = TSuperHelper.createMarkerArgExpr( |
| superTeam, |
| new AstGenerator(this.sourceStart, this.sourceEnd)); |
| markerArg.resolvedType = markerType; |
| this.arguments = AstEdit.extendExpressionArray(this.arguments, markerArg); |
| this.accessMode = Tsuper; // is a tsuper call that was recognized late. |
| } |
| // SH} |
| |
| public void setActualReceiverType(ReferenceBinding receiverType) { |
| // ignored |
| } |
| |
| public void setDepth(int depth) { |
| // ignore for here |
| } |
| |
| public void setFieldIndex(int depth) { |
| // ignore for here |
| } |
| |
| public void traverse(ASTVisitor visitor, BlockScope scope) { |
| if (visitor.visit(this, scope)) { |
| if (this.qualification != null) { |
| this.qualification.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.arguments != null) { |
| for (int i = 0, argumentLength = this.arguments.length; i < argumentLength; i++) |
| this.arguments[i].traverse(visitor, scope); |
| } |
| } |
| visitor.endVisit(this, scope); |
| } |
| } |