| /******************************************************************************* |
| * Copyright (c) 2000, 2016 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 |
| *******************************************************************************/ |
| package org.eclipse.jdt.internal.corext.refactoring.typeconstraints.types; |
| |
| import org.eclipse.core.runtime.Assert; |
| |
| import org.eclipse.jdt.core.IType; |
| import org.eclipse.jdt.core.dom.ITypeBinding; |
| |
| |
| |
| public final class ParameterizedType extends HierarchyType { |
| |
| private GenericType fTypeDeclaration; |
| private TType[] fTypeArguments; |
| |
| protected ParameterizedType(TypeEnvironment environment) { |
| super(environment); |
| } |
| |
| @Override |
| protected void initialize(ITypeBinding binding, IType javaElementType) { |
| Assert.isTrue(binding.isParameterizedType()); |
| super.initialize(binding, javaElementType); |
| TypeEnvironment environment= getEnvironment(); |
| fTypeDeclaration= (GenericType)environment.create(binding.getTypeDeclaration()); |
| ITypeBinding[] typeArguments= binding.getTypeArguments(); |
| fTypeArguments= new TType[typeArguments.length]; |
| for (int i= 0; i < typeArguments.length; i++) { |
| fTypeArguments[i]= environment.create(typeArguments[i]); |
| } |
| } |
| |
| @Override |
| public int getKind() { |
| return PARAMETERIZED_TYPE; |
| } |
| |
| @Override |
| public TType getTypeDeclaration() { |
| return fTypeDeclaration; |
| } |
| |
| @Override |
| public TType getErasure() { |
| return fTypeDeclaration; |
| } |
| |
| public TType[] getTypeArguments() { |
| return fTypeArguments.clone(); |
| } |
| |
| @Override |
| public boolean doEquals(TType type) { |
| ParameterizedType other= (ParameterizedType)type; |
| if (! getBindingKey().equals(other.getBindingKey())) |
| return false; |
| if (! getJavaElementType().equals(other.getJavaElementType())) |
| return false; |
| return true; |
| } |
| |
| @Override |
| public int hashCode() { |
| return getBindingKey().hashCode(); |
| } |
| |
| @Override |
| protected boolean doCanAssignTo(TType lhs) { |
| int targetType= lhs.getKind(); |
| switch (targetType) { |
| case NULL_TYPE: return false; |
| case VOID_TYPE: return false; |
| case PRIMITIVE_TYPE: return false; |
| |
| case ARRAY_TYPE: return false; |
| |
| case STANDARD_TYPE: return canAssignToStandardType((StandardType)lhs); |
| case GENERIC_TYPE: return false; |
| case PARAMETERIZED_TYPE: return canAssignToParameterizedType((ParameterizedType)lhs); |
| case RAW_TYPE: return canAssignToRawType((RawType)lhs); |
| |
| case UNBOUND_WILDCARD_TYPE: |
| case SUPER_WILDCARD_TYPE: |
| case EXTENDS_WILDCARD_TYPE: |
| return ((WildcardType)lhs).checkAssignmentBound(this); |
| |
| case TYPE_VARIABLE: return false; |
| case CAPTURE_TYPE: |
| return ((CaptureType)lhs).checkLowerBound(this); |
| } |
| return false; |
| } |
| |
| @Override |
| protected boolean isTypeEquivalentTo(TType other) { |
| int otherElementType= other.getKind(); |
| if (otherElementType == RAW_TYPE || otherElementType == GENERIC_TYPE) |
| return getErasure().isTypeEquivalentTo(other.getErasure()); |
| return super.isTypeEquivalentTo(other); |
| } |
| |
| private boolean canAssignToRawType(RawType target) { |
| return fTypeDeclaration.isSubType(target.getHierarchyType()); |
| } |
| |
| private boolean canAssignToParameterizedType(ParameterizedType target) { |
| GenericType targetDeclaration= target.fTypeDeclaration; |
| ParameterizedType sameSourceType= findSameDeclaration(targetDeclaration); |
| if (sameSourceType == null) |
| return false; |
| TType[] targetArguments= target.fTypeArguments; |
| TType[] sourceArguments= sameSourceType.fTypeArguments; |
| if (targetArguments.length != sourceArguments.length) |
| return false; |
| for (int i= 0; i < sourceArguments.length; i++) { |
| if (!targetArguments[i].checkTypeArgument(sourceArguments[i])) |
| return false; |
| } |
| return true; |
| } |
| |
| private ParameterizedType findSameDeclaration(GenericType targetDeclaration) { |
| if (fTypeDeclaration.equals(targetDeclaration)) |
| return this; |
| ParameterizedType result= null; |
| TType type= getSuperclass(); |
| if (type != null && type.getKind() == PARAMETERIZED_TYPE) { |
| result= ((ParameterizedType)type).findSameDeclaration(targetDeclaration); |
| if (result != null) |
| return result; |
| } |
| TType[] interfaces= getInterfaces(); |
| for (int i= 0; i < interfaces.length; i++) { |
| type= interfaces[i]; |
| if (type != null && type.getKind() == PARAMETERIZED_TYPE) { |
| result= ((ParameterizedType)type).findSameDeclaration(targetDeclaration); |
| if (result != null) |
| return result; |
| } |
| } |
| return null; |
| } |
| |
| @Override |
| public String getName() { |
| StringBuilder result= new StringBuilder(getJavaElementType().getElementName()); |
| result.append("<"); //$NON-NLS-1$ |
| result.append(fTypeArguments[0].getName()); |
| for (int i= 1; i < fTypeArguments.length; i++) { |
| result.append(", "); //$NON-NLS-1$ |
| result.append(fTypeArguments[i].getName()); |
| } |
| result.append(">"); //$NON-NLS-1$ |
| return result.toString(); |
| } |
| |
| @Override |
| protected String getPlainPrettySignature() { |
| StringBuilder result= new StringBuilder(getJavaElementType().getFullyQualifiedName('.')); |
| result.append("<"); //$NON-NLS-1$ |
| result.append(fTypeArguments[0].getPlainPrettySignature()); |
| for (int i= 1; i < fTypeArguments.length; i++) { |
| result.append(", "); //$NON-NLS-1$ |
| result.append(fTypeArguments[i].getPlainPrettySignature()); |
| } |
| result.append(">"); //$NON-NLS-1$ |
| return result.toString(); |
| } |
| } |