| /******************************************************************************* |
| * Copyright (c) 2004, 2005 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 |
| *******************************************************************************/ |
| package org.eclipse.jdt.core.dom; |
| |
| import java.util.HashSet; |
| |
| import org.eclipse.jdt.core.compiler.CharOperation; |
| import org.eclipse.jdt.internal.compiler.classfmt.ClassFileConstants; |
| import org.eclipse.jdt.internal.compiler.lookup.Binding; |
| import org.eclipse.jdt.internal.compiler.lookup.CaptureBinding; |
| import org.eclipse.jdt.internal.compiler.lookup.ExtraCompilerModifiers; |
| import org.eclipse.jdt.internal.compiler.lookup.FieldBinding; |
| import org.eclipse.jdt.internal.compiler.lookup.ImportBinding; |
| import org.eclipse.jdt.internal.compiler.lookup.ParameterizedTypeBinding; |
| import org.eclipse.jdt.internal.compiler.lookup.ReferenceBinding; |
| import org.eclipse.jdt.internal.compiler.lookup.TypeVariableBinding; |
| import org.eclipse.jdt.internal.compiler.lookup.VariableBinding; |
| import org.eclipse.jdt.internal.compiler.lookup.WildcardBinding; |
| |
| /** |
| * Internal helper class for comparing bindings. |
| * |
| * @since 3.1 |
| */ |
| class BindingComparator { |
| /** |
| * @param bindings |
| * @param otherBindings |
| * @return true if both parameters are equals, false otherwise |
| */ |
| static boolean isEqual(TypeVariableBinding[] bindings, TypeVariableBinding[] otherBindings) { |
| if (bindings == null) { |
| return otherBindings == null; |
| } else if (otherBindings == null) { |
| return false; |
| } else { |
| int length = bindings.length; |
| int otherLength = otherBindings.length; |
| if (length != otherLength) { |
| return false; |
| } |
| for (int i = 0; i < length; i++) { |
| TypeVariableBinding typeVariableBinding = bindings[i]; |
| TypeVariableBinding typeVariableBinding2 = otherBindings[i]; |
| if (!isEqual(typeVariableBinding, typeVariableBinding2)) { |
| return false; |
| } |
| } |
| return true; |
| } |
| } |
| |
| /** |
| * @param declaringElement |
| * @param declaringElement2 |
| * @return true if both parameters are equals, false otherwise |
| */ |
| static boolean isEqual(Binding declaringElement, Binding declaringElement2, HashSet visitedTypes) { |
| if (declaringElement instanceof org.eclipse.jdt.internal.compiler.lookup.TypeBinding) { |
| if (!(declaringElement2 instanceof org.eclipse.jdt.internal.compiler.lookup.TypeBinding)){ |
| return false; |
| } |
| return isEqual((org.eclipse.jdt.internal.compiler.lookup.TypeBinding) declaringElement, |
| (org.eclipse.jdt.internal.compiler.lookup.TypeBinding) declaringElement2, |
| visitedTypes); |
| } else if (declaringElement instanceof org.eclipse.jdt.internal.compiler.lookup.MethodBinding) { |
| if (!(declaringElement2 instanceof org.eclipse.jdt.internal.compiler.lookup.MethodBinding)) { |
| return false; |
| } |
| return isEqual((org.eclipse.jdt.internal.compiler.lookup.MethodBinding) declaringElement, |
| (org.eclipse.jdt.internal.compiler.lookup.MethodBinding) declaringElement2, |
| visitedTypes); |
| } else if (declaringElement instanceof VariableBinding) { |
| if (!(declaringElement2 instanceof VariableBinding)) { |
| return false; |
| } |
| return isEqual((VariableBinding) declaringElement, |
| (VariableBinding) declaringElement2); |
| } else if (declaringElement instanceof org.eclipse.jdt.internal.compiler.lookup.PackageBinding) { |
| if (!(declaringElement2 instanceof org.eclipse.jdt.internal.compiler.lookup.PackageBinding)) { |
| return false; |
| } |
| org.eclipse.jdt.internal.compiler.lookup.PackageBinding packageBinding = (org.eclipse.jdt.internal.compiler.lookup.PackageBinding) declaringElement; |
| org.eclipse.jdt.internal.compiler.lookup.PackageBinding packageBinding2 = (org.eclipse.jdt.internal.compiler.lookup.PackageBinding) declaringElement2; |
| return CharOperation.equals(packageBinding.compoundName, packageBinding2.compoundName); |
| } else if (declaringElement instanceof ImportBinding) { |
| if (!(declaringElement2 instanceof ImportBinding)) { |
| return false; |
| } |
| ImportBinding importBinding = (ImportBinding) declaringElement; |
| ImportBinding importBinding2 = (ImportBinding) declaringElement2; |
| return importBinding.isStatic() == importBinding2.isStatic() |
| && importBinding.onDemand == importBinding2.onDemand |
| && CharOperation.equals(importBinding.compoundName, importBinding2.compoundName); |
| } |
| return false; |
| } |
| |
| static boolean isEqual(org.eclipse.jdt.internal.compiler.lookup.MethodBinding methodBinding, |
| org.eclipse.jdt.internal.compiler.lookup.MethodBinding methodBinding2) { |
| return isEqual(methodBinding, methodBinding2, new HashSet()); |
| } |
| |
| static boolean isEqual(org.eclipse.jdt.internal.compiler.lookup.MethodBinding methodBinding, |
| org.eclipse.jdt.internal.compiler.lookup.MethodBinding methodBinding2, |
| HashSet visitedTypes) { |
| return (methodBinding == null && methodBinding2 == null) |
| || (CharOperation.equals(methodBinding.selector, methodBinding2.selector) |
| && isEqual(methodBinding.returnType, methodBinding2.returnType, visitedTypes) |
| && isEqual(methodBinding.thrownExceptions, methodBinding2.thrownExceptions, visitedTypes) |
| && isEqual(methodBinding.declaringClass, methodBinding2.declaringClass, visitedTypes) |
| && isEqual(methodBinding.typeVariables, methodBinding2.typeVariables, visitedTypes) |
| && isEqual(methodBinding.parameters, methodBinding2.parameters, visitedTypes)); |
| } |
| |
| static boolean isEqual(VariableBinding variableBinding, VariableBinding variableBinding2) { |
| return (variableBinding.modifiers & ExtraCompilerModifiers.AccJustFlag) == (variableBinding2.modifiers & ExtraCompilerModifiers.AccJustFlag) |
| && CharOperation.equals(variableBinding.name, variableBinding2.name) |
| && isEqual(variableBinding.type, variableBinding2.type) |
| && (variableBinding.id == variableBinding2.id); |
| } |
| |
| static boolean isEqual(FieldBinding fieldBinding, FieldBinding fieldBinding2) { |
| HashSet visitedTypes = new HashSet(); |
| return (fieldBinding.modifiers & ExtraCompilerModifiers.AccJustFlag) == (fieldBinding2.modifiers & ExtraCompilerModifiers.AccJustFlag) |
| && CharOperation.equals(fieldBinding.name, fieldBinding2.name) |
| && isEqual(fieldBinding.type, fieldBinding2.type, visitedTypes) |
| && isEqual(fieldBinding.declaringClass, fieldBinding2.declaringClass, visitedTypes); |
| } |
| |
| /** |
| * @param bindings |
| * @param otherBindings |
| * @return true if both parameters are equals, false otherwise |
| */ |
| static boolean isEqual(org.eclipse.jdt.internal.compiler.lookup.TypeBinding[] bindings, org.eclipse.jdt.internal.compiler.lookup.TypeBinding[] otherBindings) { |
| return isEqual(bindings, otherBindings, new HashSet()); |
| } |
| /** |
| * @param bindings |
| * @param otherBindings |
| * @return true if both parameters are equals, false otherwise |
| */ |
| static boolean isEqual(org.eclipse.jdt.internal.compiler.lookup.TypeBinding[] bindings, org.eclipse.jdt.internal.compiler.lookup.TypeBinding[] otherBindings, HashSet visitedTypes) { |
| if (bindings == null) { |
| return otherBindings == null; |
| } else if (otherBindings == null) { |
| return false; |
| } else { |
| int length = bindings.length; |
| int otherLength = otherBindings.length; |
| if (length != otherLength) { |
| return false; |
| } |
| for (int i = 0; i < length; i++) { |
| if (!isEqual(bindings[i], otherBindings[i], visitedTypes)) { |
| return false; |
| } |
| } |
| return true; |
| } |
| } |
| static boolean isEqual(org.eclipse.jdt.internal.compiler.lookup.TypeBinding typeBinding, org.eclipse.jdt.internal.compiler.lookup.TypeBinding typeBinding2, HashSet visitedTypes) { |
| if (typeBinding == typeBinding2) |
| return true; |
| if (typeBinding == null || typeBinding2 == null) |
| return false; |
| |
| switch (typeBinding.kind()) { |
| case Binding.BASE_TYPE : |
| if (!typeBinding2.isBaseType()) { |
| return false; |
| } |
| return typeBinding.id == typeBinding2.id; |
| |
| case Binding.ARRAY_TYPE : |
| if (!typeBinding2.isArrayType()) { |
| return false; |
| } |
| return typeBinding.dimensions() == typeBinding2.dimensions() |
| && isEqual(typeBinding.leafComponentType(), typeBinding2.leafComponentType(), visitedTypes); |
| |
| case Binding.PARAMETERIZED_TYPE : |
| if (!typeBinding2.isParameterizedType()) { |
| return false; |
| } |
| ParameterizedTypeBinding parameterizedTypeBinding = (ParameterizedTypeBinding) typeBinding; |
| ParameterizedTypeBinding parameterizedTypeBinding2 = (ParameterizedTypeBinding) typeBinding2; |
| return CharOperation.equals(parameterizedTypeBinding.compoundName, parameterizedTypeBinding2.compoundName) |
| && (parameterizedTypeBinding.modifiers & (ExtraCompilerModifiers.AccJustFlag | ClassFileConstants.AccInterface | ClassFileConstants.AccEnum | ClassFileConstants.AccAnnotation)) |
| == (parameterizedTypeBinding2.modifiers & (ExtraCompilerModifiers.AccJustFlag | ClassFileConstants.AccInterface | ClassFileConstants.AccEnum | ClassFileConstants.AccAnnotation)) |
| && isEqual(parameterizedTypeBinding.arguments, parameterizedTypeBinding2.arguments, visitedTypes) |
| && isEqual(parameterizedTypeBinding.enclosingType(), parameterizedTypeBinding2.enclosingType(), visitedTypes); |
| |
| case Binding.WILDCARD_TYPE : |
| if (!typeBinding2.isWildcard()) { |
| return false; |
| } |
| WildcardBinding wildcardBinding = (WildcardBinding) typeBinding; |
| WildcardBinding wildcardBinding2 = (WildcardBinding) typeBinding2; |
| return isEqual(wildcardBinding.bound, wildcardBinding2.bound, visitedTypes) |
| && wildcardBinding.boundKind == wildcardBinding2.boundKind; |
| |
| case Binding.TYPE_PARAMETER : |
| if (!(typeBinding2.isTypeVariable())) { |
| return false; |
| } |
| if (typeBinding.isCapture()) { |
| if (!(typeBinding2.isCapture())) { |
| return false; |
| } |
| CaptureBinding captureBinding = (CaptureBinding) typeBinding; |
| CaptureBinding captureBinding2 = (CaptureBinding) typeBinding2; |
| if (captureBinding.position == captureBinding2.position) { |
| if (visitedTypes.contains(typeBinding)) return true; |
| visitedTypes.add(typeBinding); |
| |
| return isEqual(captureBinding.wildcard, captureBinding2.wildcard, visitedTypes) |
| && isEqual(captureBinding.sourceType, captureBinding2.sourceType, visitedTypes); |
| } |
| return false; |
| } |
| TypeVariableBinding typeVariableBinding = (TypeVariableBinding) typeBinding; |
| TypeVariableBinding typeVariableBinding2 = (TypeVariableBinding) typeBinding2; |
| if (CharOperation.equals(typeVariableBinding.sourceName, typeVariableBinding2.sourceName)) { |
| if (visitedTypes.contains(typeBinding)) return true; |
| visitedTypes.add(typeBinding); |
| |
| return isEqual(typeVariableBinding.declaringElement, typeVariableBinding2.declaringElement, visitedTypes) |
| && isEqual(typeVariableBinding.superclass(), typeVariableBinding2.superclass(), visitedTypes) |
| && isEqual(typeVariableBinding.superInterfaces(), typeVariableBinding2.superInterfaces(), visitedTypes); |
| } |
| return false; |
| case Binding.GENERIC_TYPE : |
| if (!typeBinding2.isGenericType()) { |
| return false; |
| } |
| ReferenceBinding referenceBinding = (ReferenceBinding) typeBinding; |
| ReferenceBinding referenceBinding2 = (ReferenceBinding) typeBinding2; |
| return CharOperation.equals(referenceBinding.compoundName, referenceBinding2.compoundName) |
| && (referenceBinding.modifiers & (ExtraCompilerModifiers.AccJustFlag | ClassFileConstants.AccInterface | ClassFileConstants.AccEnum | ClassFileConstants.AccAnnotation)) |
| == (referenceBinding2.modifiers & (ExtraCompilerModifiers.AccJustFlag | ClassFileConstants.AccInterface | ClassFileConstants.AccEnum | ClassFileConstants.AccAnnotation)) |
| && isEqual(referenceBinding.typeVariables(), referenceBinding2.typeVariables(), visitedTypes) |
| && isEqual(referenceBinding.enclosingType(), referenceBinding2.enclosingType(), visitedTypes); |
| |
| case Binding.RAW_TYPE : |
| default : |
| if (!(typeBinding2 instanceof ReferenceBinding)) { |
| return false; |
| } |
| referenceBinding = (ReferenceBinding) typeBinding; |
| referenceBinding2 = (ReferenceBinding) typeBinding2; |
| return CharOperation.equals(referenceBinding.compoundName, referenceBinding2.compoundName) |
| && CharOperation.equals(referenceBinding.constantPoolName(), referenceBinding2.constantPoolName()) |
| && (!referenceBinding2.isGenericType()) |
| && (referenceBinding.isRawType() == referenceBinding2.isRawType()) |
| && (referenceBinding.modifiers & (ExtraCompilerModifiers.AccJustFlag | ClassFileConstants.AccInterface | ClassFileConstants.AccEnum | ClassFileConstants.AccAnnotation)) |
| == (referenceBinding2.modifiers & (ExtraCompilerModifiers.AccJustFlag | ClassFileConstants.AccInterface | ClassFileConstants.AccEnum | ClassFileConstants.AccAnnotation)) |
| && isEqual(referenceBinding.enclosingType(), referenceBinding2.enclosingType(), visitedTypes); |
| } |
| } |
| /** |
| * @param typeBinding |
| * @param typeBinding2 |
| * @return true if both parameters are equals, false otherwise |
| */ |
| static boolean isEqual(org.eclipse.jdt.internal.compiler.lookup.TypeBinding typeBinding, org.eclipse.jdt.internal.compiler.lookup.TypeBinding typeBinding2) { |
| return isEqual(typeBinding, typeBinding2, new HashSet()); |
| } |
| } |