| /******************************************************************************* |
| * Copyright (c) 2000, 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.ArrayList; |
| import java.util.Iterator; |
| |
| import org.eclipse.jdt.core.IJavaElement; |
| import org.eclipse.jdt.core.IMethod; |
| import org.eclipse.jdt.core.IType; |
| import org.eclipse.jdt.core.JavaModelException; |
| import org.eclipse.jdt.core.Signature; |
| import org.eclipse.jdt.core.compiler.CharOperation; |
| import org.eclipse.jdt.internal.compiler.lookup.CompilerModifiers; |
| import org.eclipse.jdt.internal.compiler.lookup.LookupEnvironment; |
| import org.eclipse.jdt.internal.compiler.lookup.MethodVerifier; |
| import org.eclipse.jdt.internal.compiler.lookup.ParameterizedGenericMethodBinding; |
| import org.eclipse.jdt.internal.compiler.lookup.RawTypeBinding; |
| import org.eclipse.jdt.internal.compiler.lookup.ReferenceBinding; |
| import org.eclipse.jdt.internal.compiler.lookup.TypeBinding; |
| import org.eclipse.jdt.internal.compiler.lookup.TypeVariableBinding; |
| import org.eclipse.jdt.internal.core.JavaElement; |
| import org.eclipse.jdt.internal.core.Member; |
| import org.eclipse.jdt.internal.core.util.Util; |
| |
| /** |
| * Internal implementation of method bindings. |
| */ |
| class MethodBinding implements IMethodBinding { |
| |
| private static final int VALID_MODIFIERS = Modifier.PUBLIC | Modifier.PROTECTED | Modifier.PRIVATE | |
| Modifier.ABSTRACT | Modifier.STATIC | Modifier.FINAL | Modifier.SYNCHRONIZED | Modifier.NATIVE | |
| Modifier.STRICTFP; |
| private static final ITypeBinding[] NO_TYPE_BINDINGS = new ITypeBinding[0]; |
| private org.eclipse.jdt.internal.compiler.lookup.MethodBinding binding; |
| private BindingResolver resolver; |
| private ITypeBinding[] parameterTypes; |
| private ITypeBinding[] exceptionTypes; |
| private String name; |
| private ITypeBinding declaringClass; |
| private ITypeBinding returnType; |
| private String key; |
| private ITypeBinding[] typeParameters; |
| private ITypeBinding[] typeArguments; |
| |
| MethodBinding(BindingResolver resolver, org.eclipse.jdt.internal.compiler.lookup.MethodBinding binding) { |
| this.resolver = resolver; |
| this.binding = binding; |
| } |
| |
| /* |
| * @see IMethodBinding#isConstructor() |
| */ |
| public boolean isConstructor() { |
| return this.binding.isConstructor(); |
| } |
| |
| /* |
| * @see IMethodBinding#isDefaultConstructor() |
| * @since 3.0 |
| */ |
| public boolean isDefaultConstructor() { |
| final ReferenceBinding declaringClassBinding = this.binding.declaringClass; |
| if (declaringClassBinding.isRawType()) { |
| RawTypeBinding rawTypeBinding = (RawTypeBinding) declaringClassBinding; |
| if (rawTypeBinding.type.isBinaryBinding()) { |
| return false; |
| } |
| return (this.binding.modifiers & CompilerModifiers.AccIsDefaultConstructor) != 0; |
| } |
| if (declaringClassBinding.isBinaryBinding()) { |
| return false; |
| } |
| return (this.binding.modifiers & CompilerModifiers.AccIsDefaultConstructor) != 0; |
| } |
| |
| /* |
| * @see IBinding#getName() |
| */ |
| public String getName() { |
| if (name == null) { |
| if (this.binding.isConstructor()) { |
| name = this.getDeclaringClass().getName(); |
| } else { |
| name = new String(this.binding.selector); |
| } |
| } |
| return name; |
| } |
| |
| /* |
| * @see IMethodBinding#getDeclaringClass() |
| */ |
| public ITypeBinding getDeclaringClass() { |
| if (this.declaringClass == null) { |
| this.declaringClass = this.resolver.getTypeBinding(this.binding.declaringClass); |
| } |
| return declaringClass; |
| } |
| |
| /* |
| * @see IMethodBinding#getParameterTypes() |
| */ |
| public ITypeBinding[] getParameterTypes() { |
| if (this.parameterTypes != null) { |
| return parameterTypes; |
| } |
| org.eclipse.jdt.internal.compiler.lookup.TypeBinding[] parameters = this.binding.parameters; |
| int length = parameters.length; |
| if (length == 0) { |
| this.parameterTypes = NO_TYPE_BINDINGS; |
| } else { |
| this.parameterTypes = new ITypeBinding[length]; |
| for (int i = 0; i < length; i++) { |
| this.parameterTypes[i] = this.resolver.getTypeBinding(parameters[i]); |
| } |
| } |
| return this.parameterTypes; |
| } |
| |
| /* |
| * @see IMethodBinding#getReturnType() |
| */ |
| public ITypeBinding getReturnType() { |
| if (this.returnType == null) { |
| this.returnType = this.resolver.getTypeBinding(this.binding.returnType); |
| } |
| return this.returnType; |
| } |
| |
| /* |
| * @see IMethodBinding#getExceptionTypes() |
| */ |
| public ITypeBinding[] getExceptionTypes() { |
| if (this.exceptionTypes != null) { |
| return exceptionTypes; |
| } |
| org.eclipse.jdt.internal.compiler.lookup.TypeBinding[] exceptions = this.binding.thrownExceptions; |
| int length = exceptions.length; |
| if (length == 0) { |
| this.exceptionTypes = NO_TYPE_BINDINGS; |
| } else { |
| this.exceptionTypes = new ITypeBinding[length]; |
| for (int i = 0; i < length; i++) { |
| this.exceptionTypes[i] = this.resolver.getTypeBinding(exceptions[i]); |
| } |
| } |
| return this.exceptionTypes; |
| } |
| |
| public IJavaElement getJavaElement() { |
| JavaElement element = getUnresolvedJavaElement(); |
| if (element == null) |
| return null; |
| return element.resolved(this.binding); |
| } |
| |
| private JavaElement getUnresolvedJavaElement() { |
| IType declaringType = (IType) getDeclaringClass().getJavaElement(); |
| if (declaringType == null) return null; |
| if (!(this.resolver instanceof DefaultBindingResolver)) return null; |
| ASTNode node = (ASTNode) ((DefaultBindingResolver) this.resolver).bindingsToAstNodes.get(this); |
| if (node != null && declaringType.getParent().getElementType() != IJavaElement.CLASS_FILE) { |
| if (node instanceof MethodDeclaration) { |
| MethodDeclaration methodDeclaration = (MethodDeclaration) node; |
| ArrayList parameterSignatures = new ArrayList(); |
| Iterator iterator = methodDeclaration.parameters().iterator(); |
| while (iterator.hasNext()) { |
| SingleVariableDeclaration parameter = (SingleVariableDeclaration) iterator.next(); |
| Type type = parameter.getType(); |
| String typeSig = Util.getSignature(type); |
| int arrayDim = parameter.getExtraDimensions(); |
| if (parameter.getAST().apiLevel() >= AST.JLS3 && parameter.isVarargs()) { |
| arrayDim++; |
| } |
| if (arrayDim > 0) { |
| typeSig = Signature.createArraySignature(typeSig, arrayDim); |
| } |
| parameterSignatures.add(typeSig); |
| } |
| int parameterCount = parameterSignatures.size(); |
| String[] parameters = new String[parameterCount]; |
| parameterSignatures.toArray(parameters); |
| return (JavaElement) declaringType.getMethod(getName(), parameters); |
| } else { |
| // annotation type member declaration |
| AnnotationTypeMemberDeclaration typeMemberDeclaration = (AnnotationTypeMemberDeclaration) node; |
| return (JavaElement) declaringType.getMethod(typeMemberDeclaration.getName().getIdentifier(), new String[0]); // annotation type members don't have parameters |
| } |
| } else { |
| // case of method not in the created AST, or a binary method |
| org.eclipse.jdt.internal.compiler.lookup.MethodBinding original = this.binding.original(); |
| String selector = original.isConstructor() ? declaringType.getElementName() : new String(original.selector); |
| TypeBinding[] parameters = original.parameters; |
| int length = parameters == null ? 0 : parameters.length; |
| String[] parameterSignatures = new String[length]; |
| for (int i = 0; i < length; i++) { |
| parameterSignatures[i] = new String(parameters[i].genericTypeSignature()).replace('/', '.'); |
| } |
| IMethod result = declaringType.getMethod(selector, parameterSignatures); |
| if (declaringType.isBinary()) |
| return (JavaElement) result; |
| IMethod[] methods = null; |
| try { |
| methods = declaringType.getMethods(); |
| } catch (JavaModelException e) { |
| // declaring type doesn't exist |
| return null; |
| } |
| IMethod[] candidates = Member.findMethods(result, methods); |
| if (candidates == null || candidates.length == 0) |
| return null; |
| return (JavaElement) candidates[0]; |
| } |
| } |
| |
| /* |
| * @see IBinding#getKind() |
| */ |
| public int getKind() { |
| return IBinding.METHOD; |
| } |
| |
| /* |
| * @see IBinding#getModifiers() |
| */ |
| public int getModifiers() { |
| return this.binding.getAccessFlags() & VALID_MODIFIERS; |
| } |
| |
| /* |
| * @see IBinding#isDeprecated() |
| */ |
| public boolean isDeprecated() { |
| return this.binding.isDeprecated(); |
| } |
| |
| /** |
| * @see IBinding#isSynthetic() |
| */ |
| public boolean isSynthetic() { |
| return this.binding.isSynthetic(); |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.jdt.core.dom.IMethodBinding#isVarargs() |
| * @since 3.1 |
| */ |
| public boolean isVarargs() { |
| return this.binding.isVarargs(); |
| } |
| |
| /* |
| * @see IBinding#getKey() |
| */ |
| public String getKey() { |
| if (this.key == null) { |
| this.key = new String(this.binding.computeUniqueKey()); |
| } |
| return this.key; |
| } |
| |
| /* |
| * @see IBinding#isEqualTo(Binding) |
| * @since 3.1 |
| */ |
| public boolean isEqualTo(IBinding other) { |
| if (other == this) { |
| // identical binding - equal (key or no key) |
| return true; |
| } |
| if (other == null) { |
| // other binding missing |
| return false; |
| } |
| if (!(other instanceof MethodBinding)) { |
| return false; |
| } |
| org.eclipse.jdt.internal.compiler.lookup.MethodBinding otherBinding = ((MethodBinding) other).binding; |
| return BindingComparator.isEqual(this.binding, otherBinding); |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.jdt.core.dom.IMethodBinding#getTypeParameters() |
| */ |
| public ITypeBinding[] getTypeParameters() { |
| if (this.typeParameters != null) { |
| return this.typeParameters; |
| } |
| TypeVariableBinding[] typeVariableBindings = this.binding.typeVariables(); |
| if (typeVariableBindings != null) { |
| int typeVariableBindingsLength = typeVariableBindings.length; |
| if (typeVariableBindingsLength != 0) { |
| this.typeParameters = new ITypeBinding[typeVariableBindingsLength]; |
| for (int i = 0; i < typeVariableBindingsLength; i++) { |
| typeParameters[i] = this.resolver.getTypeBinding(typeVariableBindings[i]); |
| } |
| } else { |
| this.typeParameters = NO_TYPE_BINDINGS; |
| } |
| } else { |
| this.typeParameters = NO_TYPE_BINDINGS; |
| } |
| return this.typeParameters; |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.jdt.core.dom.ITypeBinding#isGenericMethod() |
| * @since 3.1 |
| */ |
| public boolean isGenericMethod() { |
| // equivalent to return getTypeParameters().length > 0; |
| if (this.typeParameters != null) { |
| return this.typeParameters.length > 0; |
| } |
| TypeVariableBinding[] typeVariableBindings = this.binding.typeVariables(); |
| return (typeVariableBindings != null && typeVariableBindings.length > 0); |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.jdt.core.dom.IMethodBinding#getTypeArguments() |
| */ |
| public ITypeBinding[] getTypeArguments() { |
| if (this.typeArguments != null) { |
| return this.typeArguments; |
| } |
| |
| if (this.binding instanceof ParameterizedGenericMethodBinding) { |
| ParameterizedGenericMethodBinding genericMethodBinding = (ParameterizedGenericMethodBinding) this.binding; |
| org.eclipse.jdt.internal.compiler.lookup.TypeBinding[] typeArgumentsBindings = genericMethodBinding.typeArguments; |
| if (typeArgumentsBindings != null) { |
| int typeArgumentsLength = typeArgumentsBindings.length; |
| if (typeArgumentsLength != 0) { |
| this.typeArguments = new ITypeBinding[typeArgumentsLength]; |
| for (int i = 0; i < typeArgumentsLength; i++) { |
| this.typeArguments[i] = this.resolver.getTypeBinding(typeArgumentsBindings[i]); |
| } |
| } else { |
| this.typeArguments = NO_TYPE_BINDINGS; |
| } |
| } else { |
| this.typeArguments = NO_TYPE_BINDINGS; |
| } |
| } else { |
| this.typeArguments = NO_TYPE_BINDINGS; |
| } |
| return this.typeArguments; |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.jdt.core.dom.IMethodBinding#isParameterizedMethod() |
| */ |
| public boolean isParameterizedMethod() { |
| return (this.binding instanceof ParameterizedGenericMethodBinding) |
| && !((ParameterizedGenericMethodBinding) this.binding).isRaw; |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.jdt.core.dom.IMethodBinding#isRawMethod() |
| */ |
| public boolean isRawMethod() { |
| return (this.binding instanceof ParameterizedGenericMethodBinding) |
| && ((ParameterizedGenericMethodBinding) this.binding).isRaw; |
| } |
| |
| public boolean isSubsignature(IMethodBinding otherMethod) { |
| org.eclipse.jdt.internal.compiler.lookup.MethodBinding other = ((MethodBinding) otherMethod).binding; |
| if (!CharOperation.equals(this.binding.selector, other.selector)) |
| return false; |
| return this.binding.areParameterErasuresEqual(other); |
| } |
| |
| /** |
| * @see org.eclipse.jdt.core.dom.IMethodBinding#getMethodDeclaration() |
| */ |
| public IMethodBinding getMethodDeclaration() { |
| return this.resolver.getMethodBinding(this.binding.original()); |
| } |
| |
| /* (non-Javadoc) |
| * @see IMethodBinding#overrides(IMethodBinding) |
| */ |
| public boolean overrides(IMethodBinding overridenMethod) { |
| org.eclipse.jdt.internal.compiler.lookup.MethodBinding overridenCompilerBinding = ((MethodBinding) overridenMethod).binding; |
| if (this.binding == overridenCompilerBinding) |
| return false; |
| if (!CharOperation.equals(this.binding.selector, overridenCompilerBinding.selector)) |
| return false; |
| ReferenceBinding match = this.binding.declaringClass.findSuperTypeWithSameErasure(overridenCompilerBinding.declaringClass); |
| if (match == null) return false; |
| |
| org.eclipse.jdt.internal.compiler.lookup.MethodBinding[] superMethods = match.methods(); |
| for (int i = 0, length = superMethods.length; i < length; i++) { |
| if (superMethods[i].original() == overridenCompilerBinding) { |
| LookupEnvironment lookupEnvironment = this.resolver.lookupEnvironment(); |
| if (lookupEnvironment == null) return false; |
| MethodVerifier methodVerifier = lookupEnvironment.methodVerifier(); |
| return methodVerifier.doesMethodOverride(this.binding, superMethods[i]); |
| } |
| } |
| return false; |
| } |
| |
| /* |
| * For debugging purpose only. |
| * @see java.lang.Object#toString() |
| */ |
| public String toString() { |
| return this.binding.toString(); |
| } |
| } |