Java Code Examples for org.eclipse.jdt.core.dom.ITypeBinding#isRawType()

/**
 * Creates the appropriate ParameterizedType node. Recursion is needed to
 * handle the nested case (e.g., Vector<Vector<String>>).
 * @param ast
 * @param typeBinding
 * @return the created type
 */
private Type createParameterizedType(AST ast, ITypeBinding typeBinding){
	if (typeBinding.isParameterizedType() && !typeBinding.isRawType()){
		Type baseType= ast.newSimpleType(ASTNodeFactory.newName(ast, typeBinding.getErasure().getName()));
		ParameterizedType newType= ast.newParameterizedType(baseType);
		for (int i=0; i < typeBinding.getTypeArguments().length; i++){
			ITypeBinding typeArg= typeBinding.getTypeArguments()[i];
			Type argType= createParameterizedType(ast, typeArg); // recursive call
			newType.typeArguments().add(argType);
		}
		return newType;
	} else {
		if (!typeBinding.isTypeVariable()){
			return ast.newSimpleType(ASTNodeFactory.newName(ast, typeBinding.getErasure().getName()));
		} else {
			return ast.newSimpleType(ast.newSimpleName(typeBinding.getName()));
		}
	}
}
 

private static Set<ITypeBinding> getTypeBoundsForSubsignature(ITypeBinding typeParameter) {
	ITypeBinding[] typeBounds= typeParameter.getTypeBounds();
	int count= typeBounds.length;
	if (count == 0)
		return Collections.emptySet();

	Set<ITypeBinding> result= new HashSet<ITypeBinding>(typeBounds.length);
	for (int i= 0; i < typeBounds.length; i++) {
		ITypeBinding bound= typeBounds[i];
		if ("java.lang.Object".equals(typeBounds[0].getQualifiedName())) //$NON-NLS-1$
			continue;
		else if (containsTypeVariables(bound))
			result.add(bound.getErasure()); // try to achieve effect of "rename type variables"
		else if (bound.isRawType())
			result.add(bound.getTypeDeclaration());
		else
			result.add(bound);
	}
	return result;
}
 

private ASTNode getNewQualifiedNameNode(ITypeBinding[] parameters, Name name) {
	final AST ast= name.getAST();
	boolean raw= false;
	final ITypeBinding binding= name.resolveTypeBinding();
	if (binding != null && binding.isRawType())
		raw= true;
	if (parameters != null && parameters.length > 0 && !raw) {
		final ParameterizedType type= ast.newParameterizedType(ast.newSimpleType(ast.newName(fQualifiedTypeName)));
		for (int index= 0; index < parameters.length; index++)
			type.typeArguments().add(ast.newSimpleType(ast.newSimpleName(parameters[index].getName())));
		return type;
	}
	return ast.newName(fQualifiedTypeName);
}
 

private ASTNode getNewUnqualifiedTypeNode(ITypeBinding[] parameters, Name name) {
	final AST ast= name.getAST();
	boolean raw= false;
	final ITypeBinding binding= name.resolveTypeBinding();
	if (binding != null && binding.isRawType())
		raw= true;
	if (parameters != null && parameters.length > 0 && !raw) {
		final ParameterizedType type= ast.newParameterizedType(ast.newSimpleType(ast.newSimpleName(fType.getElementName())));
		for (int index= 0; index < parameters.length; index++)
			type.typeArguments().add(ast.newSimpleType(ast.newSimpleName(parameters[index].getName())));
		return type;
	}
	return ast.newSimpleType(ast.newSimpleName(fType.getElementName()));
}
 

public TType create(ITypeBinding binding) {
	if (binding.isPrimitive()) {
		return createPrimitiveType(binding);
	} else if (binding.isArray()) {
		return createArrayType(binding);
	} else if (binding.isRawType()) {
		return createRawType(binding);
	} else if (binding.isGenericType()) {
		return createGenericType(binding);
	} else if (binding.isParameterizedType()) {
		return createParameterizedType(binding);
	} else if (binding.isTypeVariable()) {
		return createTypeVariable(binding);
	} else if (binding.isWildcardType()) {
		if (binding.getBound() == null) {
			return createUnboundWildcardType(binding);
		} else if (binding.isUpperbound()) {
			return createExtendsWildCardType(binding);
		} else {
			return createSuperWildCardType(binding);
		}
	} else if (binding.isCapture()) {
		if (fRemoveCapures) {
			return create(binding.getWildcard());
		} else {
			return createCaptureType(binding);
		}
	}
	if ("null".equals(binding.getName())) //$NON-NLS-1$
		return NULL;
	return createStandardType(binding);
}
 

private static ITypeBinding handleBug84585(ITypeBinding typeBinding) {
	if (typeBinding == null)
		return null;
	else if (typeBinding.isGenericType() && ! typeBinding.isRawType() && ! typeBinding.isParameterizedType())
		return null; //see bug 84585
	else
		return typeBinding;
}
 

public static boolean isAGenericType(ITypeBinding type) {
	return type.isGenericType()
			|| type.isParameterizedType()
			|| (type.isRawType() && type.getTypeDeclaration().isGenericType());
}
 

/**
 * Returns the type to which an inlined variable initializer should be cast, or
 * <code>null</code> if no cast is necessary.
 * 
 * @param initializer the initializer expression of the variable to inline
 * @param reference the reference to the variable (which is to be inlined)
 * @return a type binding to which the initializer should be cast, or <code>null</code> iff no cast is necessary
 * @since 3.6
 */
public static ITypeBinding getExplicitCast(Expression initializer, Expression reference) {
	ITypeBinding initializerType= initializer.resolveTypeBinding();
	ITypeBinding referenceType= reference.resolveTypeBinding();
	if (initializerType == null || referenceType == null)
		return null;
	
	if (initializerType.isPrimitive() && referenceType.isPrimitive() && ! referenceType.isEqualTo(initializerType)) {
		return referenceType;
		
	} else if (initializerType.isPrimitive() && ! referenceType.isPrimitive()) { // initializer is autoboxed
		ITypeBinding unboxedReferenceType= Bindings.getUnboxedTypeBinding(referenceType, reference.getAST());
		if (!unboxedReferenceType.isEqualTo(initializerType))
			return unboxedReferenceType;
		else if (needsExplicitBoxing(reference))
			return referenceType;
		
	} else if (! initializerType.isPrimitive() && referenceType.isPrimitive()) { // initializer is autounboxed
		ITypeBinding unboxedInitializerType= Bindings.getUnboxedTypeBinding(initializerType, reference.getAST());
		if (!unboxedInitializerType.isEqualTo(referenceType))
			return referenceType;
		
	} else if (initializerType.isRawType() && referenceType.isParameterizedType()) {
		return referenceType; // don't lose the unchecked conversion

	} else if (initializer instanceof LambdaExpression || initializer instanceof MethodReference) {
		if (isTargetAmbiguous(reference, isExplicitlyTypedLambda(initializer))) {
			return referenceType;
		} else {
			ITypeBinding targetType= getTargetType(reference);
			if (targetType == null || targetType != referenceType) {
				return referenceType;
			}
		}

	} else if (! TypeRules.canAssign(initializerType, referenceType)) {
		if (!Bindings.containsTypeVariables(referenceType))
			return referenceType;
	}
	
	return null;
}
 

public static boolean isUseableTypeInContext(ITypeBinding type, IBinding context, boolean noWildcards) {
	if (type.isArray()) {
		type= type.getElementType();
	}
	if (type.isAnonymous()) {
		return false;
	}
	if (type.isRawType() || type.isPrimitive()) {
		return true;
	}
	if (type.isTypeVariable()) {
		return isVariableDefinedInContext(context, type);
	}
	if (type.isGenericType()) {
		ITypeBinding[] typeParameters= type.getTypeParameters();
		for (int i= 0; i < typeParameters.length; i++) {
			if (!isUseableTypeInContext(typeParameters[i], context, noWildcards)) {
				return false;
			}
		}
		return true;
	}
	if (type.isParameterizedType()) {
		ITypeBinding[] typeArguments= type.getTypeArguments();
		for (int i= 0; i < typeArguments.length; i++) {
			if (!isUseableTypeInContext(typeArguments[i], context, noWildcards)) {
				return false;
			}
		}
		return true;
	}
	if (type.isCapture()) {
		type= type.getWildcard();
	}

	if (type.isWildcardType()) {
		if (noWildcards) {
			return false;
		}
		if (type.getBound() != null) {
			return isUseableTypeInContext(type.getBound(), context, noWildcards);
		}
	}
	return true;
}