| /******************************************************************************* |
| * Copyright (c) 2007, 2012 BEA Systems, Inc. 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: |
| * wharley@bea.com - initial API and implementation |
| * IBM Corporation - fix for 342598 |
| *******************************************************************************/ |
| |
| package org.eclipse.jdt.internal.compiler.apt.model; |
| |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.List; |
| |
| import javax.lang.model.element.Element; |
| import javax.lang.model.element.TypeElement; |
| import javax.lang.model.type.ArrayType; |
| import javax.lang.model.type.DeclaredType; |
| import javax.lang.model.type.ExecutableType; |
| import javax.lang.model.type.NoType; |
| import javax.lang.model.type.NullType; |
| import javax.lang.model.type.PrimitiveType; |
| import javax.lang.model.type.TypeKind; |
| import javax.lang.model.type.TypeMirror; |
| import javax.lang.model.type.WildcardType; |
| import javax.lang.model.util.Types; |
| |
| import org.eclipse.jdt.core.compiler.CharOperation; |
| import org.eclipse.jdt.internal.compiler.apt.dispatch.BaseProcessingEnvImpl; |
| import org.eclipse.jdt.internal.compiler.ast.Wildcard; |
| import org.eclipse.jdt.internal.compiler.lookup.ArrayBinding; |
| import org.eclipse.jdt.internal.compiler.lookup.BaseTypeBinding; |
| import org.eclipse.jdt.internal.compiler.lookup.Binding; |
| import org.eclipse.jdt.internal.compiler.lookup.FieldBinding; |
| import org.eclipse.jdt.internal.compiler.lookup.MethodBinding; |
| import org.eclipse.jdt.internal.compiler.lookup.ReferenceBinding; |
| import org.eclipse.jdt.internal.compiler.lookup.TypeBinding; |
| import org.eclipse.jdt.internal.compiler.lookup.TypeVariableBinding; |
| |
| /** |
| * Utilities for working with types (as opposed to elements). |
| * There is one of these for every ProcessingEnvironment. |
| */ |
| public class TypesImpl implements Types { |
| |
| private final BaseProcessingEnvImpl _env; |
| |
| /* |
| * The processing env creates and caches a TypesImpl. Other clients should |
| * not create their own; they should ask the env for it. |
| */ |
| public TypesImpl(BaseProcessingEnvImpl env) { |
| _env = env; |
| } |
| |
| /* (non-Javadoc) |
| * @see javax.lang.model.util.Types#asElement(javax.lang.model.type.TypeMirror) |
| */ |
| @Override |
| public Element asElement(TypeMirror t) { |
| switch(t.getKind()) { |
| case DECLARED : |
| case TYPEVAR : |
| return _env.getFactory().newElement(((TypeMirrorImpl)t).binding()); |
| default: |
| break; |
| } |
| return null; |
| } |
| |
| /* (non-Javadoc) |
| * @see javax.lang.model.util.Types#asMemberOf(javax.lang.model.type.DeclaredType, javax.lang.model.element.Element) |
| */ |
| @Override |
| public TypeMirror asMemberOf(DeclaredType containing, Element element) { |
| // throw new UnsupportedOperationException("NYI: TypesImpl.asMemberOf(" + containing + ", " + element + ")"); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ |
| ElementImpl elementImpl = (ElementImpl) element; |
| DeclaredTypeImpl declaredTypeImpl = (DeclaredTypeImpl) containing; |
| ReferenceBinding referenceBinding = (ReferenceBinding) declaredTypeImpl._binding; |
| switch(element.getKind()) { |
| case CONSTRUCTOR : |
| case METHOD : |
| MethodBinding methodBinding = (MethodBinding) elementImpl._binding; |
| if (TypeBinding.notEquals(methodBinding.declaringClass, referenceBinding)) { |
| throw new IllegalArgumentException("element is not valid for the containing declared type"); //$NON-NLS-1$ |
| } |
| for (MethodBinding method : referenceBinding.methods()) { |
| if (CharOperation.equals(method.selector, methodBinding.selector) |
| && method.areParameterErasuresEqual(methodBinding)) { |
| return this._env.getFactory().newTypeMirror(method); |
| } |
| } |
| break; |
| case FIELD : |
| case ENUM_CONSTANT: |
| FieldBinding fieldBinding = (FieldBinding) elementImpl._binding; |
| if (TypeBinding.notEquals(fieldBinding.declaringClass, referenceBinding)) { |
| throw new IllegalArgumentException("element is not valid for the containing declared type"); //$NON-NLS-1$ |
| } |
| for (FieldBinding field : referenceBinding.fields()) { |
| if (CharOperation.equals(field.name, fieldBinding.name)) { |
| return this._env.getFactory().newTypeMirror(field); |
| } |
| } |
| break; |
| case ENUM : |
| case ANNOTATION_TYPE : |
| case INTERFACE : |
| case CLASS : |
| ReferenceBinding referenceBinding2 = (ReferenceBinding) elementImpl._binding; |
| if (TypeBinding.notEquals(referenceBinding2.enclosingType(), referenceBinding)) { |
| throw new IllegalArgumentException("element is not valid for the containing declared type"); //$NON-NLS-1$ |
| } |
| for (ReferenceBinding referenceBinding3 : referenceBinding.memberTypes()) { |
| if (CharOperation.equals(referenceBinding3.compoundName, referenceBinding3.compoundName)) { |
| return this._env.getFactory().newTypeMirror(referenceBinding3); |
| } |
| } |
| break; |
| default: |
| break; |
| } |
| throw new IllegalArgumentException("element is not valid for the containing declared type: element kind " + element.getKind()); //$NON-NLS-1$ |
| } |
| |
| /* (non-Javadoc) |
| * @see javax.lang.model.util.Types#boxedClass(javax.lang.model.type.PrimitiveType) |
| */ |
| @Override |
| public TypeElement boxedClass(PrimitiveType p) { |
| PrimitiveTypeImpl primitiveTypeImpl = (PrimitiveTypeImpl) p; |
| BaseTypeBinding baseTypeBinding = (BaseTypeBinding)primitiveTypeImpl._binding; |
| TypeBinding boxed = _env.getLookupEnvironment().computeBoxingType(baseTypeBinding); |
| return (TypeElement) _env.getFactory().newElement(boxed); |
| } |
| |
| /* (non-Javadoc) |
| * @see javax.lang.model.util.Types#capture(javax.lang.model.type.TypeMirror) |
| */ |
| @Override |
| public TypeMirror capture(TypeMirror t) { |
| throw new UnsupportedOperationException("NYI: TypesImpl.capture(...)"); //$NON-NLS-1$ |
| } |
| |
| /* (non-Javadoc) |
| * @see javax.lang.model.util.Types#contains(javax.lang.model.type.TypeMirror, javax.lang.model.type.TypeMirror) |
| */ |
| @Override |
| public boolean contains(TypeMirror t1, TypeMirror t2) { |
| switch(t1.getKind()) { |
| case EXECUTABLE : |
| case PACKAGE : |
| throw new IllegalArgumentException("Executable and package are illegal argument for Types.contains(..)"); //$NON-NLS-1$ |
| default: |
| break; |
| } |
| switch(t2.getKind()) { |
| case EXECUTABLE : |
| case PACKAGE : |
| throw new IllegalArgumentException("Executable and package are illegal argument for Types.contains(..)"); //$NON-NLS-1$ |
| default: |
| break; |
| } |
| throw new UnsupportedOperationException("NYI: TypesImpl.contains(" + t1 + ", " + t2 + ")"); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ |
| } |
| |
| /* (non-Javadoc) |
| * @see javax.lang.model.util.Types#directSupertypes(javax.lang.model.type.TypeMirror) |
| */ |
| @Override |
| public List<? extends TypeMirror> directSupertypes(TypeMirror t) { |
| switch(t.getKind()) { |
| case PACKAGE : |
| case EXECUTABLE : |
| throw new IllegalArgumentException("Invalid type mirror for directSupertypes"); //$NON-NLS-1$ |
| default: |
| break; |
| } |
| TypeMirrorImpl typeMirrorImpl = (TypeMirrorImpl) t; |
| Binding binding = typeMirrorImpl._binding; |
| if (binding instanceof ReferenceBinding) { |
| ReferenceBinding referenceBinding = (ReferenceBinding) binding; |
| ArrayList<TypeMirror> list = new ArrayList<TypeMirror>(); |
| ReferenceBinding superclass = referenceBinding.superclass(); |
| if (superclass != null) { |
| list.add(this._env.getFactory().newTypeMirror(superclass)); |
| } |
| for (ReferenceBinding interfaceBinding : referenceBinding.superInterfaces()) { |
| list.add(this._env.getFactory().newTypeMirror(interfaceBinding)); |
| } |
| return Collections.unmodifiableList(list); |
| } |
| return Collections.emptyList(); |
| } |
| |
| /* (non-Javadoc) |
| * @see javax.lang.model.util.Types#erasure(javax.lang.model.type.TypeMirror) |
| */ |
| @Override |
| public TypeMirror erasure(TypeMirror t) { |
| TypeMirrorImpl typeMirrorImpl = (TypeMirrorImpl) t; |
| Binding binding = typeMirrorImpl._binding; |
| if (binding instanceof ReferenceBinding) { |
| return _env.getFactory().newTypeMirror(((ReferenceBinding) binding).erasure()); |
| } |
| if (binding instanceof ArrayBinding) { |
| TypeBinding typeBinding = (TypeBinding) binding; |
| return _env.getFactory().newTypeMirror( |
| this._env.getLookupEnvironment().createArrayType( |
| typeBinding.leafComponentType().erasure(), |
| typeBinding.dimensions())); |
| } |
| return t; |
| } |
| |
| /* (non-Javadoc) |
| * @see javax.lang.model.util.Types#getArrayType(javax.lang.model.type.TypeMirror) |
| */ |
| @Override |
| public ArrayType getArrayType(TypeMirror componentType) { |
| TypeMirrorImpl typeMirrorImpl = (TypeMirrorImpl) componentType; |
| TypeBinding typeBinding = (TypeBinding) typeMirrorImpl._binding; |
| return (ArrayType) _env.getFactory().newTypeMirror( |
| this._env.getLookupEnvironment().createArrayType( |
| typeBinding.leafComponentType(), |
| typeBinding.dimensions() + 1)); |
| } |
| |
| /* (non-Javadoc) |
| * @see javax.lang.model.util.Types#getDeclaredType(javax.lang.model.element.TypeElement, javax.lang.model.type.TypeMirror[]) |
| */ |
| @Override |
| public DeclaredType getDeclaredType(TypeElement typeElem, TypeMirror... typeArgs) { |
| int typeArgsLength = typeArgs.length; |
| TypeElementImpl typeElementImpl = (TypeElementImpl) typeElem; |
| ReferenceBinding referenceBinding = (ReferenceBinding) typeElementImpl._binding; |
| TypeVariableBinding[] typeVariables = referenceBinding.typeVariables(); |
| int typeVariablesLength = typeVariables.length; |
| if (typeArgsLength == 0) { |
| if (referenceBinding.isGenericType()) { |
| // must return a raw type |
| return (DeclaredType) _env.getFactory().newTypeMirror(this._env.getLookupEnvironment().createRawType(referenceBinding, null)); |
| } |
| return (DeclaredType)typeElem.asType(); |
| } else if (typeArgsLength != typeVariablesLength) { |
| throw new IllegalArgumentException("Number of typeArguments doesn't match the number of formal parameters of typeElem"); //$NON-NLS-1$ |
| } |
| TypeBinding[] typeArguments = new TypeBinding[typeArgsLength]; |
| for (int i = 0; i < typeArgsLength; i++) { |
| TypeMirrorImpl typeMirrorImpl = (TypeMirrorImpl) typeArgs[i]; |
| Binding binding = typeMirrorImpl._binding; |
| if (!(binding instanceof TypeBinding)) { |
| throw new IllegalArgumentException("Invalid type argument: " + typeMirrorImpl); //$NON-NLS-1$ |
| } |
| typeArguments[i] = (TypeBinding) binding; |
| } |
| return (DeclaredType) _env.getFactory().newTypeMirror( |
| this._env.getLookupEnvironment().createParameterizedType(referenceBinding, typeArguments, null)); |
| } |
| |
| /* (non-Javadoc) |
| * @see javax.lang.model.util.Types#getDeclaredType(javax.lang.model.type.DeclaredType, javax.lang.model.element.TypeElement, javax.lang.model.type.TypeMirror[]) |
| */ |
| @Override |
| public DeclaredType getDeclaredType(DeclaredType containing, TypeElement typeElem, |
| TypeMirror... typeArgs) { |
| int typeArgsLength = typeArgs.length; |
| TypeElementImpl typeElementImpl = (TypeElementImpl) typeElem; |
| ReferenceBinding referenceBinding = (ReferenceBinding) typeElementImpl._binding; |
| TypeVariableBinding[] typeVariables = referenceBinding.typeVariables(); |
| int typeVariablesLength = typeVariables.length; |
| DeclaredTypeImpl declaredTypeImpl = (DeclaredTypeImpl) containing; |
| ReferenceBinding enclosingType = (ReferenceBinding) declaredTypeImpl._binding; |
| if (typeArgsLength == 0) { |
| if (referenceBinding.isGenericType()) { |
| // must return a raw type |
| return (DeclaredType) _env.getFactory().newTypeMirror(this._env.getLookupEnvironment().createRawType(referenceBinding, enclosingType)); |
| } |
| // TODO (see how to create a member type binding |
| throw new UnsupportedOperationException("NYI: TypesImpl.getDeclaredType(...) for member types"); //$NON-NLS-1$ |
| } else if (typeArgsLength != typeVariablesLength) { |
| throw new IllegalArgumentException("Number of typeArguments doesn't match the number of formal parameters of typeElem"); //$NON-NLS-1$ |
| } |
| TypeBinding[] typeArguments = new TypeBinding[typeArgsLength]; |
| for (int i = 0; i < typeArgsLength; i++) { |
| TypeMirrorImpl typeMirrorImpl = (TypeMirrorImpl) typeArgs[i]; |
| Binding binding = typeMirrorImpl._binding; |
| if (!(binding instanceof TypeBinding)) { |
| throw new IllegalArgumentException("Invalid type for a type arguments : " + typeMirrorImpl); //$NON-NLS-1$ |
| } |
| typeArguments[i] = (TypeBinding) binding; |
| } |
| return (DeclaredType) _env.getFactory().newTypeMirror( |
| this._env.getLookupEnvironment().createParameterizedType(referenceBinding, typeArguments, enclosingType)); |
| } |
| |
| @Override |
| public NoType getNoType(TypeKind kind) { |
| return _env.getFactory().getNoType(kind); |
| } |
| |
| /* (non-Javadoc) |
| * @see javax.lang.model.util.Types#getNullType() |
| */ |
| @Override |
| public NullType getNullType() { |
| return _env.getFactory().getNullType(); |
| } |
| |
| /* (non-Javadoc) |
| * @see javax.lang.model.util.Types#getPrimitiveType(javax.lang.model.type.TypeKind) |
| */ |
| @Override |
| public PrimitiveType getPrimitiveType(TypeKind kind) { |
| return _env.getFactory().getPrimitiveType(kind); |
| } |
| |
| /* (non-Javadoc) |
| * @see javax.lang.model.util.Types#getWildcardType(javax.lang.model.type.TypeMirror, javax.lang.model.type.TypeMirror) |
| */ |
| @Override |
| public WildcardType getWildcardType(TypeMirror extendsBound, TypeMirror superBound) { |
| if (extendsBound != null && superBound != null) { |
| throw new IllegalArgumentException("Extends and super bounds cannot be set at the same time"); //$NON-NLS-1$ |
| } |
| if (extendsBound != null) { |
| TypeMirrorImpl extendsBoundMirrorType = (TypeMirrorImpl) extendsBound; |
| TypeBinding typeBinding = (TypeBinding) extendsBoundMirrorType._binding; |
| return (WildcardType) _env.getFactory().newTypeMirror( |
| this._env.getLookupEnvironment().createWildcard( |
| null, |
| 0, |
| typeBinding, |
| null, |
| Wildcard.EXTENDS)); |
| } |
| if (superBound != null) { |
| TypeMirrorImpl superBoundMirrorType = (TypeMirrorImpl) superBound; |
| TypeBinding typeBinding = (TypeBinding) superBoundMirrorType._binding; |
| return new WildcardTypeImpl(_env, this._env.getLookupEnvironment().createWildcard( |
| null, |
| 0, |
| typeBinding, |
| null, |
| Wildcard.SUPER)); |
| } |
| return new WildcardTypeImpl(_env, this._env.getLookupEnvironment().createWildcard( |
| null, |
| 0, |
| null, |
| null, |
| Wildcard.UNBOUND)); |
| } |
| |
| /** |
| * @return true if a value of type t1 can be assigned to a variable of type t2, i.e., t2 = t1. |
| */ |
| @Override |
| public boolean isAssignable(TypeMirror t1, TypeMirror t2) { |
| if (!(t1 instanceof TypeMirrorImpl) || !(t2 instanceof TypeMirrorImpl)) { |
| return false; |
| } |
| Binding b1 = ((TypeMirrorImpl)t1).binding(); |
| Binding b2 = ((TypeMirrorImpl)t2).binding(); |
| if (!(b1 instanceof TypeBinding) || !(b2 instanceof TypeBinding)) { |
| // package, method, import, etc. |
| throw new IllegalArgumentException(); |
| } |
| if (((TypeBinding)b1).isCompatibleWith((TypeBinding)b2)) { |
| return true; |
| } |
| |
| TypeBinding convertedType = _env.getLookupEnvironment().computeBoxingType((TypeBinding)b1); |
| return null != convertedType && convertedType.isCompatibleWith((TypeBinding)b2); |
| } |
| |
| /* (non-Javadoc) |
| * @see javax.lang.model.util.Types#isSameType(javax.lang.model.type.TypeMirror, javax.lang.model.type.TypeMirror) |
| */ |
| @Override |
| public boolean isSameType(TypeMirror t1, TypeMirror t2) { |
| if (t1.getKind() == TypeKind.WILDCARD || t2.getKind() == TypeKind.WILDCARD) { |
| // Wildcard types are never equal, according to the spec of this method |
| return false; |
| } |
| if (t1 == t2) { |
| return true; |
| } |
| if (!(t1 instanceof TypeMirrorImpl) || !(t2 instanceof TypeMirrorImpl)) { |
| return false; |
| } |
| Binding b1 = ((TypeMirrorImpl)t1).binding(); |
| Binding b2 = ((TypeMirrorImpl)t2).binding(); |
| |
| if (b1 == b2) { |
| return true; |
| } |
| if (!(b1 instanceof TypeBinding) || !(b2 instanceof TypeBinding)) { |
| return false; |
| } |
| TypeBinding type1 = ((TypeBinding) b1); |
| TypeBinding type2 = ((TypeBinding) b2); |
| if (TypeBinding.equalsEquals(type1, type2)) |
| return true; |
| return CharOperation.equals(type1.computeUniqueKey(), type2.computeUniqueKey()); |
| } |
| |
| /* (non-Javadoc) |
| * @see javax.lang.model.util.Types#isSubsignature(javax.lang.model.type.ExecutableType, javax.lang.model.type.ExecutableType) |
| */ |
| @Override |
| public boolean isSubsignature(ExecutableType m1, ExecutableType m2) { |
| MethodBinding methodBinding1 = (MethodBinding) ((ExecutableTypeImpl) m1)._binding; |
| MethodBinding methodBinding2 = (MethodBinding) ((ExecutableTypeImpl) m2)._binding; |
| if (!CharOperation.equals(methodBinding1.selector, methodBinding2.selector)) |
| return false; |
| return methodBinding1.areParameterErasuresEqual(methodBinding2) && methodBinding1.areTypeVariableErasuresEqual(methodBinding2); |
| } |
| |
| /** |
| * @return true if t1 is a subtype of t2, or if t1 == t2. |
| */ |
| @Override |
| public boolean isSubtype(TypeMirror t1, TypeMirror t2) { |
| if (t1 instanceof NoTypeImpl) { |
| if (t2 instanceof NoTypeImpl) { |
| return ((NoTypeImpl) t1).getKind() == ((NoTypeImpl) t2).getKind(); |
| } |
| return false; |
| } else if (t2 instanceof NoTypeImpl) { |
| return false; |
| } |
| if (!(t1 instanceof TypeMirrorImpl) || !(t2 instanceof TypeMirrorImpl)) { |
| return false; |
| } |
| if (t1 == t2) { |
| return true; |
| } |
| Binding b1 = ((TypeMirrorImpl)t1).binding(); |
| Binding b2 = ((TypeMirrorImpl)t2).binding(); |
| if (b1 == b2) { |
| return true; |
| } |
| if (!(b1 instanceof TypeBinding) || !(b2 instanceof TypeBinding)) { |
| // package, method, import, etc. |
| return false; |
| } |
| if (b1.kind() == Binding.BASE_TYPE || b2.kind() == Binding.BASE_TYPE) { |
| if (b1.kind() != b2.kind()) { |
| return false; |
| } |
| else { |
| // for primitives, compatibility implies subtype |
| return ((TypeBinding)b1).isCompatibleWith((TypeBinding)b2); |
| } |
| } |
| return ((TypeBinding)b1).isCompatibleWith((TypeBinding)b2); |
| } |
| |
| @Override |
| public PrimitiveType unboxedType(TypeMirror t) { |
| if (!(((TypeMirrorImpl)t)._binding instanceof ReferenceBinding)) { |
| // Not an unboxable type - could be primitive, array, not a type at all, etc. |
| throw new IllegalArgumentException("Given type mirror cannot be unboxed"); //$NON-NLS-1$ |
| } |
| ReferenceBinding boxed = (ReferenceBinding)((TypeMirrorImpl)t)._binding; |
| TypeBinding unboxed = _env.getLookupEnvironment().computeBoxingType(boxed); |
| if (unboxed.kind() != Binding.BASE_TYPE) { |
| // No boxing conversion was found |
| throw new IllegalArgumentException(); |
| } |
| return (PrimitiveType) _env.getFactory().newTypeMirror((BaseTypeBinding)unboxed); |
| } |
| |
| } |
