| /******************************************************************************* |
| * 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 |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| * Stephan Herrmann - Contributions for |
| * bug 342671 - ClassCastException: org.aspectj.org.eclipse.jdt.internal.compiler.lookup.SourceTypeBinding cannot be cast to org.aspectj.org.eclipse.jdt.internal.compiler.lookup.ArrayBinding |
| * Bug 420894 - ClassCastException in DefaultBindingResolver.resolveType(Type) |
| * bug 392099 - [1.8][compiler][null] Apply null annotation on types for null analysis |
| * Bug 415043 - [1.8][null] Follow-up re null type annotations after bug 392099 |
| * Andy Clement - Contributions for |
| * Bug 383624 - [1.8][compiler] Revive code generation support for type annotations (from Olivier's work) |
| *******************************************************************************/ |
| package org.aspectj.org.eclipse.jdt.internal.compiler.ast; |
| |
| import org.aspectj.org.eclipse.jdt.core.compiler.CharOperation; |
| import org.aspectj.org.eclipse.jdt.internal.compiler.ASTVisitor; |
| import org.aspectj.org.eclipse.jdt.internal.compiler.classfmt.ClassFileConstants; |
| import org.aspectj.org.eclipse.jdt.internal.compiler.impl.Constant; |
| import org.aspectj.org.eclipse.jdt.internal.compiler.lookup.*; |
| |
| /** |
| * Syntactic representation of a reference to a generic type. |
| * Note that it might also have a dimension. |
| */ |
| public class ParameterizedSingleTypeReference extends ArrayTypeReference { |
| |
| public TypeReference[] typeArguments; |
| |
| public ParameterizedSingleTypeReference(char[] name, TypeReference[] typeArguments, int dim, long pos){ |
| super(name, dim, pos); |
| this.originalSourceEnd = this.sourceEnd; |
| this.typeArguments = typeArguments; |
| for (int i = 0, max = typeArguments.length; i < max; i++) { |
| if ((typeArguments[i].bits & ASTNode.HasTypeAnnotations) != 0) { |
| this.bits |= ASTNode.HasTypeAnnotations; |
| break; |
| } |
| } |
| } |
| public ParameterizedSingleTypeReference(char[] name, TypeReference[] typeArguments, int dim, Annotation[][] annotationsOnDimensions, long pos) { |
| this(name, typeArguments, dim, pos); |
| setAnnotationsOnDimensions(annotationsOnDimensions); |
| if (annotationsOnDimensions != null) { |
| this.bits |= ASTNode.HasTypeAnnotations; |
| } |
| } |
| public void checkBounds(Scope scope) { |
| if (this.resolvedType == null) return; |
| |
| if (this.resolvedType.leafComponentType() instanceof ParameterizedTypeBinding) { |
| ParameterizedTypeBinding parameterizedType = (ParameterizedTypeBinding) this.resolvedType.leafComponentType(); |
| ReferenceBinding currentType = parameterizedType.genericType(); |
| TypeVariableBinding[] typeVariables = currentType.typeVariables(); |
| TypeBinding[] argTypes = parameterizedType.arguments; |
| if (argTypes != null && typeVariables != null) { // may be null in error cases |
| parameterizedType.boundCheck(scope, this.typeArguments); |
| } |
| } |
| } |
| |
| public TypeReference augmentTypeWithAdditionalDimensions(int additionalDimensions, Annotation [][] additionalAnnotations, boolean isVarargs) { |
| int totalDimensions = this.dimensions() + additionalDimensions; |
| Annotation [][] allAnnotations = getMergedAnnotationsOnDimensions(additionalDimensions, additionalAnnotations); |
| ParameterizedSingleTypeReference parameterizedSingleTypeReference = new ParameterizedSingleTypeReference(this.token, this.typeArguments, totalDimensions, allAnnotations, (((long) this.sourceStart) << 32) + this.sourceEnd); |
| parameterizedSingleTypeReference.annotations = this.annotations; |
| parameterizedSingleTypeReference.bits |= (this.bits & ASTNode.HasTypeAnnotations); |
| if (!isVarargs) |
| parameterizedSingleTypeReference.extendedDimensions = additionalDimensions; |
| return parameterizedSingleTypeReference; |
| } |
| |
| /** |
| * @return char[][] |
| */ |
| public char [][] getParameterizedTypeName(){ |
| StringBuffer buffer = new StringBuffer(5); |
| buffer.append(this.token).append('<'); |
| for (int i = 0, length = this.typeArguments.length; i < length; i++) { |
| if (i > 0) buffer.append(','); |
| buffer.append(CharOperation.concatWith(this.typeArguments[i].getParameterizedTypeName(), '.')); |
| } |
| buffer.append('>'); |
| int nameLength = buffer.length(); |
| char[] name = new char[nameLength]; |
| buffer.getChars(0, nameLength, name, 0); |
| int dim = this.dimensions; |
| if (dim > 0) { |
| char[] dimChars = new char[dim*2]; |
| for (int i = 0; i < dim; i++) { |
| int index = i*2; |
| dimChars[index] = '['; |
| dimChars[index+1] = ']'; |
| } |
| name = CharOperation.concat(name, dimChars); |
| } |
| return new char[][]{ name }; |
| } |
| |
| public TypeReference[][] getTypeArguments() { |
| return new TypeReference[][] { this.typeArguments }; |
| } |
| |
| /** |
| * @see org.aspectj.org.eclipse.jdt.internal.compiler.ast.ArrayQualifiedTypeReference#getTypeBinding(org.aspectj.org.eclipse.jdt.internal.compiler.lookup.Scope) |
| */ |
| protected TypeBinding getTypeBinding(Scope scope) { |
| return null; // not supported here - combined with resolveType(...) |
| } |
| |
| public boolean isParameterizedTypeReference() { |
| return true; |
| } |
| |
| /* |
| * No need to check for reference to raw type per construction |
| */ |
| private TypeBinding internalResolveType(Scope scope, ReferenceBinding enclosingType, boolean checkBounds) { |
| // handle the error here |
| this.constant = Constant.NotAConstant; |
| if ((this.bits & ASTNode.DidResolve) != 0) { // is a shared type reference which was already resolved |
| if (this.resolvedType != null) { // is a shared type reference which was already resolved |
| if (this.resolvedType.isValidBinding()) { |
| return this.resolvedType; |
| } else { |
| switch (this.resolvedType.problemId()) { |
| case ProblemReasons.NotFound : |
| case ProblemReasons.NotVisible : |
| case ProblemReasons.InheritedNameHidesEnclosingName : |
| TypeBinding type = this.resolvedType.closestMatch(); |
| return type; |
| default : |
| return null; |
| } |
| } |
| } |
| } |
| this.bits |= ASTNode.DidResolve; |
| TypeBinding type = internalResolveLeafType(scope, enclosingType, checkBounds); |
| |
| // handle three different outcomes: |
| if (type == null) { |
| this.resolvedType = createArrayType(scope, this.resolvedType); |
| resolveAnnotations(scope); |
| checkNullConstraints(scope, this.typeArguments); |
| return null; // no useful type, but still captured dimensions into this.resolvedType |
| } else { |
| type = createArrayType(scope, type); |
| if (!this.resolvedType.isValidBinding() && this.resolvedType.dimensions() == type.dimensions()) { |
| resolveAnnotations(scope); |
| checkNullConstraints(scope, this.typeArguments); |
| return type; // found some error, but could recover useful type (like closestMatch) |
| } else { |
| this.resolvedType = type; // no complaint, keep fully resolved type (incl. dimensions) |
| resolveAnnotations(scope); |
| checkNullConstraints(scope, this.typeArguments); |
| return this.resolvedType; // pick up any annotated type. |
| } |
| } |
| } |
| private TypeBinding internalResolveLeafType(Scope scope, ReferenceBinding enclosingType, boolean checkBounds) { |
| ReferenceBinding currentType; |
| if (enclosingType == null) { |
| this.resolvedType = scope.getType(this.token); |
| if (this.resolvedType.isValidBinding()) { |
| currentType = (ReferenceBinding) this.resolvedType; |
| } else { |
| reportInvalidType(scope); |
| switch (this.resolvedType.problemId()) { |
| case ProblemReasons.NotFound : |
| case ProblemReasons.NotVisible : |
| case ProblemReasons.InheritedNameHidesEnclosingName : |
| TypeBinding type = this.resolvedType.closestMatch(); |
| if (type instanceof ReferenceBinding) { |
| currentType = (ReferenceBinding) type; |
| break; |
| } |
| //$FALL-THROUGH$ - unable to complete type binding, but still resolve type arguments |
| default : |
| boolean isClassScope = scope.kind == Scope.CLASS_SCOPE; |
| int argLength = this.typeArguments.length; |
| for (int i = 0; i < argLength; i++) { |
| TypeReference typeArgument = this.typeArguments[i]; |
| if (isClassScope) { |
| typeArgument.resolveType((ClassScope) scope); |
| } else { |
| typeArgument.resolveType((BlockScope) scope, checkBounds); |
| } |
| } |
| return null; |
| } |
| // be resilient, still attempt resolving arguments |
| } |
| enclosingType = currentType.enclosingType(); // if member type |
| if (enclosingType != null) { |
| enclosingType = currentType.isStatic() |
| ? (ReferenceBinding) scope.environment().convertToRawType(enclosingType, false /*do not force conversion of enclosing types*/) |
| : scope.environment().convertToParameterizedType(enclosingType); |
| currentType = scope.environment().createParameterizedType((ReferenceBinding) currentType.erasure(), null /* no arg */, enclosingType); |
| } |
| } else { // resolving member type (relatively to enclosingType) |
| this.resolvedType = currentType = scope.getMemberType(this.token, enclosingType); |
| if (!this.resolvedType.isValidBinding()) { |
| scope.problemReporter().invalidEnclosingType(this, currentType, enclosingType); |
| return null; |
| } |
| if (isTypeUseDeprecated(currentType, scope)) |
| scope.problemReporter().deprecatedType(currentType, this); |
| ReferenceBinding currentEnclosing = currentType.enclosingType(); |
| if (currentEnclosing != null && TypeBinding.notEquals(currentEnclosing.erasure(), enclosingType.erasure())) { |
| enclosingType = currentEnclosing; // inherited member type, leave it associated with its enclosing rather than subtype |
| } |
| } |
| |
| // check generic and arity |
| boolean isClassScope = scope.kind == Scope.CLASS_SCOPE; |
| TypeReference keep = null; |
| if (isClassScope) { |
| keep = ((ClassScope) scope).superTypeReference; |
| ((ClassScope) scope).superTypeReference = null; |
| } |
| final boolean isDiamond = (this.bits & ASTNode.IsDiamond) != 0; |
| int argLength = this.typeArguments.length; |
| TypeBinding[] argTypes = new TypeBinding[argLength]; |
| boolean argHasError = false; |
| ReferenceBinding currentOriginal = (ReferenceBinding)currentType.original(); |
| for (int i = 0; i < argLength; i++) { |
| TypeReference typeArgument = this.typeArguments[i]; |
| TypeBinding argType = isClassScope |
| ? typeArgument.resolveTypeArgument((ClassScope) scope, currentOriginal, i) |
| : typeArgument.resolveTypeArgument((BlockScope) scope, currentOriginal, i); |
| this.bits |= (typeArgument.bits & ASTNode.HasTypeAnnotations); |
| if (argType == null) { |
| argHasError = true; |
| } else { |
| argTypes[i] = argType; |
| } |
| } |
| if (argHasError) { |
| return null; |
| } |
| if (isClassScope) { |
| ((ClassScope) scope).superTypeReference = keep; |
| if (((ClassScope) scope).detectHierarchyCycle(currentOriginal, this)) |
| return null; |
| } |
| |
| TypeVariableBinding[] typeVariables = currentOriginal.typeVariables(); |
| if (typeVariables == Binding.NO_TYPE_VARIABLES) { // non generic invoked with arguments |
| boolean isCompliant15 = scope.compilerOptions().originalSourceLevel >= ClassFileConstants.JDK1_5; |
| if ((currentOriginal.tagBits & TagBits.HasMissingType) == 0) { |
| if (isCompliant15) { // below 1.5, already reported as syntax error |
| this.resolvedType = currentType; |
| scope.problemReporter().nonGenericTypeCannotBeParameterized(0, this, currentType, argTypes); |
| return null; |
| } |
| } |
| // resilience do not rebuild a parameterized type unless compliance is allowing it |
| if (!isCompliant15) { |
| if (!this.resolvedType.isValidBinding()) |
| return currentType; |
| return this.resolvedType = currentType; |
| } |
| // if missing generic type, and compliance >= 1.5, then will rebuild a parameterized binding |
| } else if (argLength != typeVariables.length) { |
| if (!isDiamond) { // check arity, IsDiamond never set for 1.6- |
| scope.problemReporter().incorrectArityForParameterizedType(this, currentType, argTypes); |
| return null; |
| } |
| } else if (!currentType.isStatic()) { |
| ReferenceBinding actualEnclosing = currentType.enclosingType(); |
| if (actualEnclosing != null && actualEnclosing.isRawType()){ |
| scope.problemReporter().rawMemberTypeCannotBeParameterized( |
| this, scope.environment().createRawType(currentOriginal, actualEnclosing), argTypes); |
| return null; |
| } |
| } |
| |
| ParameterizedTypeBinding parameterizedType = scope.environment().createParameterizedType(currentOriginal, argTypes, enclosingType); |
| // check argument type compatibility for non <> cases - <> case needs no bounds check, we will scream foul if needed during inference. |
| if (!isDiamond) { |
| if (checkBounds) // otherwise will do it in Scope.connectTypeVariables() or generic method resolution |
| parameterizedType.boundCheck(scope, this.typeArguments); |
| else |
| scope.deferBoundCheck(this); |
| } |
| if (isTypeUseDeprecated(parameterizedType, scope)) |
| reportDeprecatedType(parameterizedType, scope); |
| |
| if (!this.resolvedType.isValidBinding()) { |
| return parameterizedType; |
| } |
| return this.resolvedType = parameterizedType; |
| } |
| private TypeBinding createArrayType(Scope scope, TypeBinding type) { |
| if (this.dimensions > 0) { |
| if (this.dimensions > 255) |
| scope.problemReporter().tooManyDimensions(this); |
| return scope.createArrayType(type, this.dimensions); |
| } |
| return type; |
| } |
| |
| public StringBuffer printExpression(int indent, StringBuffer output){ |
| if (this.annotations != null && this.annotations[0] != null) { |
| printAnnotations(this.annotations[0], output); |
| output.append(' '); |
| } |
| output.append(this.token); |
| output.append("<"); //$NON-NLS-1$ |
| int length = this.typeArguments.length; |
| if (length > 0) { |
| int max = length - 1; |
| for (int i= 0; i < max; i++) { |
| this.typeArguments[i].print(0, output); |
| output.append(", ");//$NON-NLS-1$ |
| } |
| this.typeArguments[max].print(0, output); |
| } |
| output.append(">"); //$NON-NLS-1$ |
| Annotation [][] annotationsOnDimensions = getAnnotationsOnDimensions(); |
| if ((this.bits & IsVarArgs) != 0) { |
| for (int i= 0 ; i < this.dimensions - 1; i++) { |
| if (annotationsOnDimensions != null && annotationsOnDimensions[i] != null) { |
| output.append(" "); //$NON-NLS-1$ |
| printAnnotations(annotationsOnDimensions[i], output); |
| output.append(" "); //$NON-NLS-1$ |
| } |
| output.append("[]"); //$NON-NLS-1$ |
| } |
| if (annotationsOnDimensions != null && annotationsOnDimensions[this.dimensions - 1] != null) { |
| output.append(" "); //$NON-NLS-1$ |
| printAnnotations(annotationsOnDimensions[this.dimensions - 1], output); |
| output.append(" "); //$NON-NLS-1$ |
| } |
| output.append("..."); //$NON-NLS-1$ |
| } else { |
| for (int i= 0 ; i < this.dimensions; i++) { |
| if (annotationsOnDimensions != null && annotationsOnDimensions[i] != null) { |
| output.append(" "); //$NON-NLS-1$ |
| printAnnotations(annotationsOnDimensions[i], output); |
| output.append(" "); //$NON-NLS-1$ |
| } |
| output.append("[]"); //$NON-NLS-1$ |
| } |
| } |
| return output; |
| } |
| |
| public TypeBinding resolveType(BlockScope scope, boolean checkBounds) { |
| return internalResolveType(scope, null, checkBounds); |
| } |
| |
| public TypeBinding resolveType(ClassScope scope) { |
| return internalResolveType(scope, null, false /*no bounds check in classScope*/); |
| } |
| |
| public TypeBinding resolveTypeEnclosing(BlockScope scope, ReferenceBinding enclosingType) { |
| return internalResolveType(scope, enclosingType, true/*check bounds*/); |
| } |
| |
| public void traverse(ASTVisitor visitor, BlockScope scope) { |
| if (visitor.visit(this, scope)) { |
| if (this.annotations != null) { |
| Annotation [] typeAnnotations = this.annotations[0]; |
| for (int i = 0, length = typeAnnotations == null ? 0 : typeAnnotations.length; i < length; i++) { |
| typeAnnotations[i].traverse(visitor, scope); |
| } |
| } |
| Annotation [][] annotationsOnDimensions = getAnnotationsOnDimensions(true); |
| if (annotationsOnDimensions != null) { |
| for (int i = 0, max = annotationsOnDimensions.length; i < max; i++) { |
| Annotation[] annotations2 = annotationsOnDimensions[i]; |
| if (annotations2 != null) { |
| for (int j = 0, max2 = annotations2.length; j < max2; j++) { |
| Annotation annotation = annotations2[j]; |
| annotation.traverse(visitor, scope); |
| } |
| } |
| } |
| } |
| for (int i = 0, max = this.typeArguments.length; i < max; i++) { |
| this.typeArguments[i].traverse(visitor, scope); |
| } |
| } |
| visitor.endVisit(this, scope); |
| } |
| |
| public void traverse(ASTVisitor visitor, ClassScope scope) { |
| if (visitor.visit(this, scope)) { |
| if (this.annotations != null) { |
| Annotation [] typeAnnotations = this.annotations[0]; |
| for (int i = 0, length = typeAnnotations == null ? 0 : typeAnnotations.length; i < length; i++) { |
| typeAnnotations[i].traverse(visitor, scope); |
| } |
| } |
| Annotation [][] annotationsOnDimensions = getAnnotationsOnDimensions(true); |
| if (annotationsOnDimensions != null) { |
| for (int i = 0, max = annotationsOnDimensions.length; i < max; i++) { |
| Annotation[] annotations2 = annotationsOnDimensions[i]; |
| for (int j = 0, max2 = annotations2.length; j < max2; j++) { |
| Annotation annotation = annotations2[j]; |
| annotation.traverse(visitor, scope); |
| } |
| } |
| } |
| for (int i = 0, max = this.typeArguments.length; i < max; i++) { |
| this.typeArguments[i].traverse(visitor, scope); |
| } |
| } |
| visitor.endVisit(this, scope); |
| } |
| } |