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/**
* Copyright (C) 2010-2018 Gordon Fraser, Andrea Arcuri and EvoSuite
* contributors
*
* This file is part of EvoSuite.
*
* EvoSuite is free software: you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation, either version 3.0 of the License, or
* (at your option) any later version.
*
* EvoSuite is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with EvoSuite. If not, see primitiveClasses = Arrays.asList("char", "int", "short",
"long", "boolean",
"float", "double",
"byte");
private static final long serialVersionUID = -3307107227790458308L;
/**
* Set of wrapper classes
*/
private static final Set> WRAPPER_TYPES = new LinkedHashSet>(
Arrays.asList(Boolean.class, Character.class, Byte.class, Short.class,
Integer.class, Long.class, Float.class, Double.class,
Void.class));
protected static Type addTypeParameters(Class clazz) {
if (clazz.isArray()) {
return GenericArrayTypeImpl.createArrayType(addTypeParameters(clazz.getComponentType()));
} else if (isMissingTypeParameters(clazz)) {
TypeVariable[] vars = clazz.getTypeParameters();
// Type[] arguments = new Type[vars.length];
// Arrays.fill(arguments, UNBOUND_WILDCARD);
Type owner = clazz.getDeclaringClass() == null ? null
: addTypeParameters(clazz.getDeclaringClass());
return new ParameterizedTypeImpl(clazz, vars, owner);
} else {
return clazz;
}
}
/**
* Returns the erasure of the given type.
*/
private static Class erase(Type type) {
if (type instanceof Class) {
return (Class) type;
} else if (type instanceof ParameterizedType) {
return (Class) ((ParameterizedType) type).getRawType();
} else if (type instanceof TypeVariable) {
TypeVariable tv = (TypeVariable) type;
if (tv.getBounds().length == 0)
return Object.class;
else
return erase(tv.getBounds()[0]);
} else if (type instanceof GenericArrayType) {
GenericArrayType aType = (GenericArrayType) type;
return GenericArrayTypeImpl.createArrayType(erase(aType.getGenericComponentType()));
} else if (type instanceof CaptureType) {
CaptureType captureType = (CaptureType) type;
if (captureType.getUpperBounds().length == 0)
return Object.class;
else
return erase(captureType.getUpperBounds()[0]);
} else {
// TODO at least support CaptureType here
throw new RuntimeException("not supported: " + type.getClass());
}
}
private static Class getClass(String name) throws ClassNotFoundException {
return getClass(name, TestGenerationContext.getInstance().getClassLoaderForSUT());
}
private static Class getClass(String name, ClassLoader loader)
throws ClassNotFoundException {
if (name.equals("void"))
return void.class;
else if (name.equals("int") || name.equals("I"))
return int.class;
else if (name.equals("short") || name.equals("S"))
return short.class;
else if (name.equals("long") || name.equals("J"))
return long.class;
else if (name.equals("float") || name.equals("F"))
return float.class;
else if (name.equals("double") || name.equals("D"))
return double.class;
else if (name.equals("boolean") || name.equals("Z"))
return boolean.class;
else if (name.equals("byte") || name.equals("B"))
return byte.class;
else if (name.equals("char") || name.equals("C"))
return char.class;
else if (name.startsWith("[")) {
Class componentType = getClass(name.substring(1, name.length()), loader);
Object array = Array.newInstance(componentType, 0);
return array.getClass();
} else if (name.startsWith("L") && name.endsWith(";")) {
return getClass(name.substring(1, name.length() - 1), loader);
} else if (name.endsWith(";")) {
return getClass(name.substring(0, name.length() - 1), loader);
} else if (name.endsWith(".class")) {
return getClass(name.replace(".class", ""), loader);
} else
return loader.loadClass(name);
}
/**
*
* isAssignable
*
*
* @param lhsType
* a {@link java.lang.reflect.Type} object.
* @param rhsType
* a {@link java.lang.reflect.Type} object.
* @return a boolean.
*/
public static boolean isAssignable(Type lhsType, Type rhsType) {
if (rhsType == null || lhsType == null)
return false;
try {
return TypeUtils.isAssignable(rhsType, lhsType);
} catch (Throwable e) {
logger.debug("Found unassignable type: " + e);
return false;
}
}
public static boolean isMissingTypeParameters(Type type) {
if (type instanceof Class) {
for (Class clazz = (Class) type; clazz != null; clazz = clazz.getEnclosingClass()) {
if (clazz.getTypeParameters().length != 0)
return true;
}
return false;
} else if (type instanceof ParameterizedType) {
return false;
} else if(type instanceof GenericArrayType) {
return false;
} else if(type instanceof TypeVariable) {
return false;
} else if(type instanceof WildcardType) {
return false;
} else {
throw new AssertionError("Unexpected type " + type.getClass());
}
}
/**
*
* isSubclass
*
*
* @param superclass
* a {@link java.lang.reflect.Type} object.
* @param subclass
* a {@link java.lang.reflect.Type} object.
* @return a boolean.
*/
public static boolean isSubclass(Type superclass, Type subclass) {
List> superclasses = ClassUtils.getAllSuperclasses((Class) subclass);
List> interfaces = ClassUtils.getAllInterfaces((Class) subclass);
if (superclasses.contains(superclass) || interfaces.contains(superclass)) {
return true;
}
return false;
}
transient Class rawClass = null;
transient Type type = null;
/**
* Generate a generic class by setting all generic parameters to their
* parameter types
*
* @param clazz
* a {@link java.lang.Class} object.
*/
public GenericClass(Class clazz) {
this.type = addTypeParameters(clazz); //GenericTypeReflector.addWildcardParameters(clazz);
this.rawClass = clazz;
}
public GenericClass(GenericClass copy) {
this.type = copy.type;
this.rawClass = copy.rawClass;
}
/**
* Generate a generic class by from a type
*
* @param type
* a {@link java.lang.reflect.Type} object.
*/
public GenericClass(Type type) {
if (type instanceof Class) {
this.type = addTypeParameters((Class) type); //GenericTypeReflector.addWildcardParameters((Class) type);
this.rawClass = (Class) type;
} else {
if (!handleGenericArraySpecialCase(type)) {
this.type = type;
try {
this.rawClass = erase(type);
} catch (RuntimeException e) {
// If there is an unresolved capture type in here
// we delete it and replace with a wildcard
this.rawClass = Object.class;
}
}
}
}
/**
* Generate a GenericClass with this exact generic type and raw class
*
* @param type
* @param clazz
*/
public GenericClass(Type type, Class clazz) {
this.type = type;
this.rawClass = clazz;
handleGenericArraySpecialCase(type);
}
/**
* Determine if there exists an instantiation of the type variables such
* that the class matches otherType
*
* @param otherType
* is the class we want to generate
* @return
*/
public boolean canBeInstantiatedTo(GenericClass otherType) {
if (isPrimitive() && otherType.isWrapperType())
return false;
if (isAssignableTo(otherType))
return true;
if (!isTypeVariable() && !otherType.isTypeVariable()) {
try {
if (otherType.isGenericSuperTypeOf(this))
return true;
} catch (RuntimeException e) {
// FIXME: GentyRef sometimes throws:
// java.lang.RuntimeException: not implemented: class sun.reflect.generics.reflectiveObjects.TypeVariableImpl
// While I have no idea why, it should be safe to proceed if we can ignore this type
return false;
}
}
Class otherRawClass = otherType.getRawClass();
if (otherRawClass.isAssignableFrom(rawClass)) {
//logger.debug("Raw classes are assignable: " + otherType + ", have: "
// + toString());
Map, Type> typeMap = otherType.getTypeVariableMap();
if (otherType.isParameterizedType()) {
typeMap.putAll(TypeUtils.determineTypeArguments(rawClass,
(ParameterizedType) otherType.getType()));
}
//logger.debug(typeMap.toString());
try {
GenericClass instantiation = getGenericInstantiation(typeMap);
if (equals(instantiation)) {
//logger.debug("Instantiation is equal to original, so I think we can't assign: "
// + instantiation);
if (hasWildcardOrTypeVariables())
return false;
else
return true;
}
//logger.debug("Checking instantiation: " + instantiation);
return instantiation.canBeInstantiatedTo(otherType);
} catch (ConstructionFailedException e) {
logger.debug("Failed to instantiate " + toString());
return false;
}
}
return false;
}
/**
*
* changeClassLoader
*
*
* @param loader
* a {@link java.lang.ClassLoader} object.
*/
public void changeClassLoader(ClassLoader loader) {
try {
if (rawClass != null)
rawClass = getClass(rawClass.getName(), loader);
if (type instanceof ParameterizedType) {
ParameterizedType pt = (ParameterizedType) type;
// GenericClass rawType = new GenericClass(pt.getRawType());
// rawType.changeClassLoader(loader);
GenericClass ownerType = null;
if (pt.getOwnerType() != null) {
ownerType = new GenericClass(pt.getOwnerType());
// ownerType.type = pt.getOwnerType();
ownerType.changeClassLoader(loader);
}
List parameterClasses = new ArrayList();
for (Type parameterType : pt.getActualTypeArguments()) {
GenericClass parameter = new GenericClass(parameterType);
// parameter.type = parameterType;
parameter.changeClassLoader(loader);
parameterClasses.add(parameter);
}
Type[] parameterTypes = new Type[parameterClasses.size()];
for (int i = 0; i < parameterClasses.size(); i++)
parameterTypes[i] = parameterClasses.get(i).getType();
this.type = new ParameterizedTypeImpl(rawClass, parameterTypes,
ownerType != null ? ownerType.getType() : null);
} else if (type instanceof GenericArrayType) {
GenericClass componentClass = getComponentClass();
componentClass.changeClassLoader(loader);
this.type = GenericArrayTypeImpl.createArrayType(componentClass.getType());
} else if (type instanceof WildcardType) {
Type[] oldUpperBounds = ((WildcardType) type).getUpperBounds();
Type[] oldLowerBounds = ((WildcardType) type).getLowerBounds();
Type[] upperBounds = new Type[oldUpperBounds.length];
Type[] lowerBounds = new Type[oldLowerBounds.length];
for (int i = 0; i < oldUpperBounds.length; i++) {
GenericClass bound = new GenericClass(oldUpperBounds[i]);
// bound.type = oldUpperBounds[i];
bound.changeClassLoader(loader);
upperBounds[i] = bound.getType();
}
for (int i = 0; i < oldLowerBounds.length; i++) {
GenericClass bound = new GenericClass(oldLowerBounds[i]);
// bound.type = oldLowerBounds[i];
bound.changeClassLoader(loader);
lowerBounds[i] = bound.getType();
}
this.type = new WildcardTypeImpl(upperBounds, lowerBounds);
} else if (type instanceof TypeVariable) {
for (TypeVariable newVar : rawClass.getTypeParameters()) {
if (newVar.getName().equals(((TypeVariable) type).getName())) {
this.type = newVar;
break;
}
}
} else {
this.type = addTypeParameters(rawClass); //GenericTypeReflector.addWildcardParameters(raw_class);
}
} catch (ClassNotFoundException e) {
logger.warn("Class not found: " + rawClass + " - keeping old class loader ",
e);
} catch (SecurityException e) {
logger.warn("Class not found: " + rawClass + " - keeping old class loader ",
e);
}
}
/* (non-Javadoc)
* @see java.lang.Object#equals(java.lang.Object)
*/
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
GenericClass other = (GenericClass) obj;
//return type.equals(other.type);
return getTypeName().equals(other.getTypeName());
/*
if (raw_class == null) {
if (other.raw_class != null)
return false;
} else if (!raw_class.equals(other.raw_class))
return false;
*/
/*
if (type == null) {
if (other.type != null)
return false;
} else if (!type.equals(other.type))
return false;
*/
// return true;
}
public Class getBoxedType() {
if (isPrimitive()) {
if (rawClass.equals(int.class))
return Integer.class;
else if (rawClass.equals(byte.class))
return Byte.class;
else if (rawClass.equals(short.class))
return Short.class;
else if (rawClass.equals(long.class))
return Long.class;
else if (rawClass.equals(float.class))
return Float.class;
else if (rawClass.equals(double.class))
return Double.class;
else if (rawClass.equals(char.class))
return Character.class;
else if (rawClass.equals(boolean.class))
return Boolean.class;
else if (rawClass.equals(void.class))
return Void.class;
else
throw new RuntimeException("Unknown unboxed type: " + rawClass);
}
return rawClass;
}
/**
*
* getClassName
*
*
* @return a {@link java.lang.String} object.
*/
public String getClassName() {
return rawClass.getName();
}
public GenericClass getComponentClass() {
if (type instanceof GenericArrayType) {
GenericArrayType arrayType = (GenericArrayType) type;
Type componentType = arrayType.getGenericComponentType();
Class rawComponentType = rawClass.getComponentType();
return new GenericClass(componentType, rawComponentType);
} else {
return new GenericClass(rawClass.getComponentType());
}
}
/**
*
* getComponentName
*
*
* @return a {@link java.lang.String} object.
*/
public String getComponentName() {
return rawClass.getComponentType().getSimpleName();
}
/**
*
* getComponentType
*
*
* @return a {@link java.lang.reflect.Type} object.
*/
public Type getComponentType() {
return GenericTypeReflector.getArrayComponentType(type);
}
public Collection getGenericBounds() {
Set bounds = new LinkedHashSet();
if (isRawClass() || !hasWildcardOrTypeVariables()) {
return bounds;
}
if (isWildcardType()) {
getGenericWildcardBounds(bounds);
} else if (isArray()) {
bounds.addAll(getComponentClass().getGenericBounds());
} else if (isTypeVariable()) {
getGenericTypeVarBounds(bounds);
} else if (isParameterizedType()) {
getGenericParameterizedTypeBounds(bounds);
}
return bounds;
}
private void getGenericWildcardBounds(Collection bounds) {
for(Type t : ((WildcardType)type).getUpperBounds()) {
bounds.add(new GenericClass(t));
}
for(Type t : ((WildcardType)type).getLowerBounds()) {
bounds.add(new GenericClass(t));
}
}
private void getGenericTypeVarBounds(Collection bounds) {
for(Type t : ((TypeVariable)type).getBounds()) {
bounds.add(new GenericClass(t));
}
}
private void getGenericParameterizedTypeBounds(Collection bounds) {
for(TypeVariable typeVar : getTypeVariables()) {
for(Type t : typeVar.getBounds()) {
bounds.add(new GenericClass(t));
}
}
}
/**
* Instantiate all type variables randomly, but adhering to type boundaries
*
* @return
* @throws ConstructionFailedException
*/
public GenericClass getGenericInstantiation() throws ConstructionFailedException {
return getGenericInstantiation(new HashMap, Type>());
}
/**
* Instantiate type variables using map, and anything not contained in the
* map randomly
*
* @param typeMap
* @return
* @throws ConstructionFailedException
*/
public GenericClass getGenericInstantiation(Map, Type> typeMap)
throws ConstructionFailedException {
return getGenericInstantiation(typeMap, 0);
}
private GenericClass getGenericInstantiation(Map, Type> typeMap,
int recursionLevel) throws ConstructionFailedException {
logger.debug("Instantiation " + toString() + " with type map " + typeMap);
// If there are no type variables, create copy
if (isRawClass() || !hasWildcardOrTypeVariables() || recursionLevel > Properties.MAX_GENERIC_DEPTH) {
logger.debug("Nothing to replace: " + toString() + ", " + isRawClass() + ", "
+ hasWildcardOrTypeVariables());
return new GenericClass(this);
}
if (isWildcardType()) {
logger.debug("Is wildcard type.");
return getGenericWildcardInstantiation(typeMap, recursionLevel);
} else if (isArray()) {
return getGenericArrayInstantiation(typeMap, recursionLevel);
} else if (isTypeVariable()) {
logger.debug("Is type variable ");
return getGenericTypeVariableInstantiation(typeMap, recursionLevel);
} else if (isParameterizedType()) {
logger.debug("Is parameterized type");
return getGenericParameterizedTypeInstantiation(typeMap, recursionLevel);
}
// TODO
return null;
}
/**
* Instantiate generic component type
*
* @param typeMap
* @throws ConstructionFailedException
* evel
* @return
*/
private GenericClass getGenericArrayInstantiation(Map, Type> typeMap,
int recursionLevel) throws ConstructionFailedException {
GenericClass componentClass = getComponentClass().getGenericInstantiation();
return getWithComponentClass(componentClass);
}
/**
* Instantiate type variable
*
* @param typeMap
* @param recursionLevel
* @return
* @throws ConstructionFailedException
*/
private GenericClass getGenericTypeVariableInstantiation(
Map, Type> typeMap, int recursionLevel)
throws ConstructionFailedException {
if (typeMap.containsKey(type)) {
logger.debug("Type contains {}: {}", toString(), typeMap);
if(typeMap.get(type) == type) {
// FIXXME: How does this happen?
throw new ConstructionFailedException("Type points to itself");
}
//TODO: If typeMap.get(type) is a wildcard we need to keep the bounds of the
// type variable in mind anyway, so this needs to be rewritten/fixed.
GenericClass selectedClass = new GenericClass(typeMap.get(type)).getGenericInstantiation(typeMap,
recursionLevel + 1);
if (!selectedClass.satisfiesBoundaries((TypeVariable) type)) {
logger.debug("Cannot be instantiated to: {}", selectedClass);
} else {
logger.debug("Can be instantiated to: {}", selectedClass);
return selectedClass;
}
}
logger.debug("Type map does not contain {}: {}", toString(), typeMap);
GenericClass selectedClass = CastClassManager.getInstance().selectCastClass((TypeVariable) type,
recursionLevel < Properties.MAX_GENERIC_DEPTH,
typeMap);
if (selectedClass == null) {
throw new ConstructionFailedException("Unable to instantiate "
+ toString());
}
logger.debug("Getting instantiation of type variable {}: {}", toString(), selectedClass);
Map, Type> extendedMap = new HashMap, Type>(
typeMap);
extendedMap.putAll(getTypeVariableMap());
for (Type bound : ((TypeVariable) type).getBounds()) {
logger.debug("Current bound of variable {}: {}", type, bound);
GenericClass boundClass = new GenericClass(bound);
extendedMap.putAll(boundClass.getTypeVariableMap());
if(boundClass.isParameterizedType()) {
Class boundRawClass = boundClass.getRawClass();
if(boundRawClass.isAssignableFrom(selectedClass.getRawClass())) {
Map, Type> xmap = TypeUtils.determineTypeArguments(selectedClass.getRawClass(), (ParameterizedType) boundClass.getType());
extendedMap.putAll(xmap);
}
}
}
logger.debug("Updated type variable map to {}", extendedMap);
GenericClass instantiation = selectedClass.getGenericInstantiation(extendedMap,
recursionLevel + 1);
typeMap.put((TypeVariable) type, instantiation.getType());
return instantiation;
}
/**
* Instantiate wildcard type
*
* @param typeMap
* @param recursionLevel
* @return
* @throws ConstructionFailedException
*/
private GenericClass getGenericWildcardInstantiation(
Map, Type> typeMap, int recursionLevel)
throws ConstructionFailedException {
GenericClass selectedClass = CastClassManager.getInstance().selectCastClass((WildcardType) type,
recursionLevel < Properties.MAX_GENERIC_DEPTH,
typeMap);
return selectedClass.getGenericInstantiation(typeMap, recursionLevel + 1);
}
public List getInterfaces() {
List ret = new ArrayList();
for(Class intf : rawClass.getInterfaces()) {
ret.add(new GenericClass(intf));
}
return ret;
}
/**
* Instantiate all type parameters of a parameterized type
*
* @param typeMap
* @param recursionLevel
* @return
* @throws ConstructionFailedException
*/
private GenericClass getGenericParameterizedTypeInstantiation(
Map, Type> typeMap, int recursionLevel)
throws ConstructionFailedException {
// FIXME: This negatively affects coverage. Why was it added?
//
// if(isClass() && !hasTypeVariables()) {
// return this;
// }
List> typeParameters = getTypeVariables();
Type[] parameterTypes = new Type[typeParameters.size()];
Type ownerType = null;
int numParam = 0;
for (GenericClass parameterClass : getParameterClasses()) {
logger.debug("Current parameter to instantiate", parameterClass);
/*
* If the parameter is a parameterized type variable such as T extends Map
* then the boundaries of the parameters of the type variable need to be respected
*/
if (!parameterClass.hasWildcardOrTypeVariables()) {
logger.debug("Parameter has no wildcard or type variable");
parameterTypes[numParam++] = parameterClass.getType();
} else {
logger.debug("Current parameter has type variables: " + parameterClass);
Map, Type> extendedMap = new HashMap, Type>(
typeMap);
extendedMap.putAll(parameterClass.getTypeVariableMap());
if(!extendedMap.containsKey(typeParameters.get(numParam)) && !parameterClass.isTypeVariable())
extendedMap.put(typeParameters.get(numParam), parameterClass.getType());
logger.debug("New type map: " + extendedMap);
if (parameterClass.isWildcardType()) {
logger.debug("Is wildcard type, here we should value the wildcard boundaries");
logger.debug("Wildcard boundaries: "+parameterClass.getGenericBounds());
logger.debug("Boundaries of underlying var: "+Arrays.asList(typeParameters.get(numParam).getBounds()));
GenericClass parameterInstance = parameterClass.getGenericWildcardInstantiation(extendedMap, recursionLevel + 1);
//GenericClass parameterTypeClass = new GenericClass(typeParameters.get(numParam));
// if(!parameterTypeClass.isAssignableFrom(parameterInstance)) {
if(!parameterInstance.satisfiesBoundaries(typeParameters.get(numParam))) {
throw new ConstructionFailedException("Invalid generic instance");
}
//GenericClass parameterInstance = new GenericClass(
// typeParameters.get(numParam)).getGenericInstantiation(extendedMap,
// recursionLevel + 1);
parameterTypes[numParam++] = parameterInstance.getType();
} else {
logger.debug("Is not wildcard but type variable? "
+ parameterClass.isTypeVariable());
GenericClass parameterInstance = parameterClass.getGenericInstantiation(extendedMap,
recursionLevel + 1);
parameterTypes[numParam++] = parameterInstance.getType();
}
}
}
if (hasOwnerType()) {
GenericClass ownerClass = getOwnerType().getGenericInstantiation(typeMap,
recursionLevel);
ownerType = ownerClass.getType();
}
return new GenericClass(new ParameterizedTypeImpl(rawClass, parameterTypes,
ownerType));
}
/**
* Retrieve number of generic type parameters
*
* @return
*/
public int getNumParameters() {
if (type instanceof ParameterizedType) {
return Arrays.asList(((ParameterizedType) type).getActualTypeArguments()).size();
}
return 0;
}
/**
* Retrieve the generic owner
*
* @return
*/
public GenericClass getOwnerType() {
return new GenericClass(((ParameterizedType) type).getOwnerType());
}
/**
* Retrieve list of actual parameters
*
* @return
*/
public List getParameterTypes() {
if (type instanceof ParameterizedType) {
return Arrays.asList(((ParameterizedType) type).getActualTypeArguments());
}
return new ArrayList();
}
/**
* Retrieve list of parameter classes
*
* @return
*/
public List getParameterClasses() {
if (type instanceof ParameterizedType) {
List parameters = new ArrayList();
for (Type parameterType : ((ParameterizedType) type).getActualTypeArguments()) {
parameters.add(new GenericClass(parameterType));
}
return parameters;
}
return new ArrayList();
}
/**
*
* getRawClass
*
*
* @return a {@link java.lang.Class} object.
*/
public Class getRawClass() {
return rawClass;
}
/**
*
* getComponentClass
*
*
* @return a {@link java.lang.reflect.Type} object.
*/
public Type getRawComponentClass() {
return GenericTypeReflector.erase(rawClass.getComponentType());
}
public GenericClass getRawGenericClass() {
return new GenericClass(rawClass);
}
/**
*
* getSimpleName
*
*
* @return a {@link java.lang.String} object.
*/
public String getSimpleName() {
// return raw_class.getSimpleName();
String name = ClassUtils.getShortClassName(rawClass).replace(";", "[]");
if (!isPrimitive() && primitiveClasses.contains(name))
return rawClass.getSimpleName().replace(";", "[]");
return name;
}
public GenericClass getSuperClass() {
return new GenericClass(
GenericTypeReflector.getExactSuperType(type, rawClass.getSuperclass()));
}
/**
*
* Getter for the field type.
*
*
* @return a {@link java.lang.reflect.Type} object.
*/
public Type getType() {
return type;
}
/**
*
* getTypeName
*
*
* @return a {@link java.lang.String} object.
*/
public String getTypeName() {
return GenericTypeReflector.getTypeName(type);
}
private Map, Type> typeVariableMap = null;
public Map, Type> getTypeVariableMap() {
if(typeVariableMap != null)
return typeVariableMap;
//logger.debug("Getting type variable map for " + type);
List> typeVariables = getTypeVariables();
List types = getParameterTypes();
Map, Type> typeMap = new LinkedHashMap, Type>();
try {
if (rawClass.getSuperclass() != null
&& !rawClass.isAnonymousClass()
&& !rawClass.getSuperclass().isAnonymousClass()
&& !(hasOwnerType() && getOwnerType().getRawClass().isAnonymousClass())) {
GenericClass superClass = getSuperClass();
//logger.debug("Superclass of " + type + ": " + superClass);
Map, Type> superMap = superClass.getTypeVariableMap();
//logger.debug("Super map after " + superClass + ": " + superMap);
typeMap.putAll(superMap);
}
for(Class interFace : rawClass.getInterfaces()) {
GenericClass interFaceClass = new GenericClass(interFace);
//logger.debug("Interface of " + type + ": " + interFaceClass);
Map, Type> superMap = interFaceClass.getTypeVariableMap();
//logger.debug("Super map after " + superClass + ": " + superMap);
typeMap.putAll(superMap);
}
if(isTypeVariable()) {
for(Type boundType : ((TypeVariable)type).getBounds()) {
GenericClass boundClass = new GenericClass(boundType);
typeMap.putAll(boundClass.getTypeVariableMap());
}
}
} catch (Exception e) {
logger.debug("Exception while getting type map: " + e);
}
for (int i = 0; i < typeVariables.size(); i++) {
if (types.get(i) != typeVariables.get(i)) {
typeMap.put(typeVariables.get(i), types.get(i));
}
}
//logger.debug("Type map: " + typeMap);
typeVariableMap = typeMap;
return typeMap;
}
/**
* Return a list of type variables of this type, or an empty list if this is
* not a parameterized type
*
* @return
*/
public List> getTypeVariables() {
List> typeVariables = new ArrayList>();
if (type instanceof ParameterizedType) {
//logger.debug("Type variables of "+rawClass+": ");
//for(TypeVariable var : rawClass.getTypeParameters()) {
// logger.debug("Var "+var+" of "+var.getGenericDeclaration());
//}
typeVariables.addAll(Arrays.asList(rawClass.getTypeParameters()));
}
return typeVariables;
}
public Class getUnboxedType() {
if (isWrapperType()) {
if (rawClass.equals(Integer.class))
return int.class;
else if (rawClass.equals(Byte.class))
return byte.class;
else if (rawClass.equals(Short.class))
return short.class;
else if (rawClass.equals(Long.class))
return long.class;
else if (rawClass.equals(Float.class))
return float.class;
else if (rawClass.equals(Double.class))
return double.class;
else if (rawClass.equals(Character.class))
return char.class;
else if (rawClass.equals(Boolean.class))
return boolean.class;
else if (rawClass.equals(Void.class))
return void.class;
else
throw new RuntimeException("Unknown boxed type: " + rawClass);
}
return rawClass;
}
public GenericClass getWithComponentClass(GenericClass componentClass) {
if (type instanceof GenericArrayType) {
return new GenericClass(
GenericArrayTypeImpl.createArrayType(componentClass.getType()),
rawClass);
} else {
return new GenericClass(type, rawClass);
}
}
public GenericClass getWithGenericParameterTypes(List parameters) {
Type[] typeArray = new Type[parameters.size()];
for (int i = 0; i < parameters.size(); i++) {
typeArray[i] = parameters.get(i).getType();
}
Type ownerType = null;
if (type instanceof ParameterizedType) {
ownerType = ((ParameterizedType) type).getOwnerType();
}
return new GenericClass(new ParameterizedTypeImpl(rawClass, typeArray, ownerType));
}
public GenericClass getWithOwnerType(GenericClass ownerClass) {
if (type instanceof ParameterizedType) {
ParameterizedType currentType = (ParameterizedType) type;
return new GenericClass(new ParameterizedTypeImpl(rawClass,
currentType.getActualTypeArguments(), ownerClass.getType()));
}
return new GenericClass(type);
}
/**
* If this is a LinkedList and the super class is a List then
* this returns a LinkedList
*
* @param superClass
* @return
* @throws ConstructionFailedException
*/
public GenericClass getWithParametersFromSuperclass(GenericClass superClass)
throws ConstructionFailedException {
GenericClass exactClass = new GenericClass(type);
if (!(type instanceof ParameterizedType)) {
exactClass.type = type;
return exactClass;
}
ParameterizedType pType = (ParameterizedType) type;
if (superClass.isParameterizedType()) {
Map, Type> typeMap = TypeUtils.determineTypeArguments(rawClass,
(ParameterizedType) superClass.getType());
return getGenericInstantiation(typeMap);
}
Class targetClass = superClass.getRawClass();
Class currentClass = rawClass;
Type[] parameterTypes = new Type[superClass.getNumParameters()];
superClass.getParameterTypes().toArray(parameterTypes);
if (targetClass.equals(currentClass)) {
logger.info("Raw classes match, setting parameters to: "
+ superClass.getParameterTypes());
exactClass.type = new ParameterizedTypeImpl(currentClass, parameterTypes,
pType.getOwnerType());
} else {
Type ownerType = pType.getOwnerType();
Map, Type> superTypeMap = superClass.getTypeVariableMap();
Type[] origArguments = pType.getActualTypeArguments();
Type[] arguments = new Type[origArguments.length];
// For some reason, doing this would lead to arguments being
// of component type TypeVariable, which would lead to
// ArrayStoreException if we try to assign a WildcardType
//Type[] arguments = Arrays.copyOf(origArguments, origArguments.length);
for(int i = 0; i < origArguments.length; i++)
arguments[i] = origArguments[i];
List> variables = getTypeVariables();
for (int i = 0; i < arguments.length; i++) {
TypeVariable var = variables.get(i);
if (superTypeMap.containsKey(var)) {
arguments[i] = superTypeMap.get(var);
logger.info("Setting type variable " + var + " to "
+ superTypeMap.get(var));
} else if (arguments[i] instanceof WildcardType
&& i < parameterTypes.length) {
logger.info("Replacing wildcard with " + parameterTypes[i]);
logger.info("Lower Bounds: "
+ Arrays.asList(TypeUtils.getImplicitLowerBounds((WildcardType) arguments[i])));
logger.info("Upper Bounds: "
+ Arrays.asList(TypeUtils.getImplicitUpperBounds((WildcardType) arguments[i])));
logger.info("Type variable: " + variables.get(i));
if (!TypeUtils.isAssignable(parameterTypes[i], arguments[i])) {
logger.info("Not assignable to bounds!");
return null;
} else {
boolean assignable = false;
for (Type bound : variables.get(i).getBounds()) {
if (TypeUtils.isAssignable(parameterTypes[i], bound)) {
assignable = true;
break;
}
}
if (!assignable) {
logger.info("Not assignable to type variable!");
return null;
}
}
arguments[i] = parameterTypes[i];
}
}
GenericClass ownerClass = new GenericClass(ownerType).getWithParametersFromSuperclass(superClass);
if (ownerClass == null)
return null;
exactClass.type = new ParameterizedTypeImpl(currentClass, arguments,
ownerClass.getType());
}
return exactClass;
}
public GenericClass getWithParameterTypes(List parameters) {
Type[] typeArray = new Type[parameters.size()];
for (int i = 0; i < parameters.size(); i++) {
typeArray[i] = parameters.get(i);
}
Type ownerType = null;
if (type instanceof ParameterizedType) {
ownerType = ((ParameterizedType) type).getOwnerType();
}
return new GenericClass(new ParameterizedTypeImpl(rawClass, typeArray, ownerType));
}
public GenericClass getWithParameterTypes(Type[] parameters) {
Type ownerType = null;
if (type instanceof ParameterizedType) {
ownerType = ((ParameterizedType) type).getOwnerType();
}
return new GenericClass(
new ParameterizedTypeImpl(rawClass, parameters, ownerType));
}
public GenericClass getWithWildcardTypes() {
Type ownerType = GenericTypeReflector.addWildcardParameters(rawClass);
return new GenericClass(ownerType);
}
private boolean handleGenericArraySpecialCase(Type type) {
if (type instanceof GenericArrayType) {
// There is some weird problem with generic methods and the component type can be null
Type componentType = ((GenericArrayType) type).getGenericComponentType();
if (componentType == null) {
this.rawClass = Object[].class;
this.type = this.rawClass;
return true;
}
}
return false;
}
/**
* Determine if this class is a subclass of superType
*
* @param superType
* @return
*/
public boolean hasGenericSuperType(GenericClass superType) {
return GenericTypeReflector.isSuperType(superType.getType(), type);
}
/**
* Determine if this class is a subclass of superType
*
* @param superType
* @return
*/
public boolean hasGenericSuperType(Type superType) {
return GenericTypeReflector.isSuperType(superType, type);
}
/* (non-Javadoc)
* @see java.lang.Object#hashCode()
*/
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + getTypeName().hashCode();
//result = prime * result + ((raw_class == null) ? 0 : raw_class.hashCode());
//result = prime * result + ((type == null) ? 0 : type.hashCode());
return result;
}
public boolean hasOwnerType() {
if (type instanceof ParameterizedType)
return ((ParameterizedType) type).getOwnerType() != null;
else
return false;
}
public boolean hasTypeVariables() {
if (isParameterizedType()) {
return hasTypeVariables((ParameterizedType) type);
}
if (isTypeVariable())
return true;
return false;
}
private boolean hasTypeVariables(ParameterizedType parameterType) {
for (Type t : parameterType.getActualTypeArguments()) {
if (t instanceof TypeVariable)
return true;
else if (t instanceof ParameterizedType) {
if (hasTypeVariables((ParameterizedType) t))
return true;
}
}
return false;
}
public boolean hasWildcardOrTypeVariables() {
if (isTypeVariable() || isWildcardType())
return true;
if (hasWildcardTypes())
return true;
if (hasTypeVariables())
return true;
if (hasOwnerType()) {
if (getOwnerType().hasWildcardOrTypeVariables())
return true;
}
if (type instanceof GenericArrayType) {
if (getComponentClass().hasWildcardOrTypeVariables())
return true;
}
return false;
}
private boolean hasWildcardType(ParameterizedType parameterType) {
for (Type t : parameterType.getActualTypeArguments()) {
if (t instanceof WildcardType)
return true;
else if (t instanceof ParameterizedType) {
if (hasWildcardType((ParameterizedType) t))
return true;
}
}
return false;
}
public boolean hasWildcardTypes() {
if (isParameterizedType()) {
return hasWildcardType((ParameterizedType) type);
}
if (isWildcardType())
return true;
return false;
}
/**
* True if this represents an abstract class
*
* @return
*/
public boolean isAbstract() {
return Modifier.isAbstract(rawClass.getModifiers());
}
/**
* True if this is an anonymous class
*
* @return
*/
public boolean isAnonymous() {
return rawClass.isAnonymousClass();
}
/**
* Return true if variable is an array
*
* @return a boolean.
*/
public boolean isArray() {
return rawClass.isArray();
}
/**
*
* isAssignableFrom
*
*
* @param rhsType
* a {@link GenericClass} object.
* @return a boolean.
*/
public boolean isAssignableFrom(GenericClass rhsType) {
return isAssignable(type, rhsType.type);
}
/**
*
* isAssignableFrom
*
*
* @param rhsType
* a {@link java.lang.reflect.Type} object.
* @return a boolean.
*/
public boolean isAssignableFrom(Type rhsType) {
return isAssignable(type, rhsType);
}
/**
*
* isAssignableTo
*
*
* @param lhsType
* a {@link GenericClass} object.
* @return a boolean.
*/
public boolean isAssignableTo(GenericClass lhsType) {
return isAssignable(lhsType.type, type);
}
/**
*
* isAssignableTo
*
*
* @param lhsType
* a {@link java.lang.reflect.Type} object.
* @return a boolean.
*/
public boolean isAssignableTo(Type lhsType) {
return isAssignable(lhsType, type);
}
/**
* True if this represents java.lang.Class
*
* @return
*/
public boolean isClass() {
return rawClass.equals(Class.class);
}
/**
* Return true if variable is an enumeration
*
* @return a boolean.
*/
public boolean isEnum() {
return rawClass.isEnum();
}
public boolean isGenericArray() {
GenericClass componentClass = new GenericClass(rawClass.getComponentType());
return componentClass.hasWildcardOrTypeVariables();
}
/**
* Determine if subType is a generic subclass
*
* @param subType
* @return
*/
public boolean isGenericSuperTypeOf(GenericClass subType) {
return GenericTypeReflector.isSuperType(type, subType.getType());
}
/**
* Determine if subType is a generic subclass
*
* @param subType
* @return
*/
public boolean isGenericSuperTypeOf(Type subType) {
return GenericTypeReflector.isSuperType(type, subType);
}
/**
* True is this represents java.lang.Object
*
* @return
*/
public boolean isObject() {
return rawClass.equals(Object.class);
}
/**
* True if this represents a parameterized generic type
*
* @return
*/
public boolean isParameterizedType() {
return type instanceof ParameterizedType;
}
/**
* Return true if variable is a primitive type
*
* @return a boolean.
*/
public boolean isPrimitive() {
return rawClass.isPrimitive();
}
/**
* True if this is a non-generic type
*
* @return
*/
public boolean isRawClass() {
return type instanceof Class;
}
/**
* True if this is a type variable
*
* @return
*/
public boolean isTypeVariable() {
return type instanceof TypeVariable;
}
/**
* True if this is a wildcard type
*
* @return
*/
public boolean isWildcardType() {
return type instanceof WildcardType;
}
/**
* True if this represents java.lang.String
*
* @return a boolean.
*/
public boolean isString() {
return rawClass.equals(String.class);
}
/**
* Return true if variable is void
*
* @return a boolean.
*/
public boolean isVoid() {
return rawClass.equals(Void.class) || rawClass.equals(void.class);
}
/**
* Return true if type of variable is a primitive wrapper
*
* @return a boolean.
*/
public boolean isWrapperType() {
return WRAPPER_TYPES.contains(rawClass);
}
public boolean satisfiesBoundaries(TypeVariable typeVariable) {
return satisfiesBoundaries(typeVariable, getTypeVariableMap());
}
/**
* Determine whether the boundaries of the type variable are satisfied by
* this class
*
* @param typeVariable
* @return
*/
public boolean satisfiesBoundaries(TypeVariable typeVariable,
Map, Type> typeMap) {
boolean isAssignable = true;
// logger.debug("Checking class: " + type + " against type variable " + typeVariable+" with map "+typeMap);
Map, Type> ownerVariableMap = getTypeVariableMap();
for(Type bound : typeVariable.getBounds()) {
if(bound instanceof ParameterizedType) {
Class boundClass = GenericTypeReflector.erase(bound);
if(boundClass.isAssignableFrom(rawClass)) {
Map, Type> xmap = TypeUtils.determineTypeArguments(rawClass, (ParameterizedType) bound);
ownerVariableMap.putAll(xmap);
}
}
}
ownerVariableMap.putAll(typeMap);
boolean changed = true;
while(changed) {
changed = false;
for (TypeVariable var : ownerVariableMap.keySet()) {
// If the type variable points to a typevariable, let it point to what the other typevariable points to
// A -> B
// B -> C
// ==> A -> C
if(ownerVariableMap.get(var) instanceof TypeVariable) {
// Other type variable, i.e., the one this is currently pointing to
TypeVariable value = (TypeVariable)ownerVariableMap.get(var);
if(ownerVariableMap.containsKey(value)) {
Type other = ownerVariableMap.get(value);
if (other instanceof TypeVariable) {
// If the value (C) is also a typevariable, check we don't have a recursion here
if (ownerVariableMap.containsKey(other)) {
Type x = ownerVariableMap.get(other);
if (x == var || x == value || x == other) {
continue;
}
}
}
if (var != other && value != other) {
ownerVariableMap.put(var, other);
changed = true;
}
}
}
}
}
GenericClass concreteClass = new GenericClass(GenericUtils.replaceTypeVariables(type, ownerVariableMap));
//logger.debug("Concrete class after variable replacement: " + concreteClass);
for (Type theType : typeVariable.getBounds()) {
//logger.debug("Current boundary of " + typeVariable + ": " + theType);
// Special case: Enum is defined as Enum
if (GenericTypeReflector.erase(theType).equals(Enum.class)) {
//logger.debug("Is ENUM case");
// if this is an enum then it's ok.
if (isEnum()) {
//logger.debug("Class " + toString() + " is an enum!");
continue;
} else {
// If it's not an enum, it cannot be assignable to enum!
//logger.debug("Class " + toString() + " is not an enum.");
isAssignable = false;
break;
}
}
Type boundType = GenericUtils.replaceTypeVariables(theType, ownerVariableMap);
boundType = GenericUtils.replaceTypeVariable(boundType, typeVariable,
getType());
boundType = GenericUtils.replaceTypeVariablesWithWildcards(boundType);
//logger.debug("Bound after variable replacement: " + boundType);
if (!concreteClass.isAssignableTo(boundType) && !(boundType instanceof WildcardType)) {
//logger.debug("Not assignable: " + type + " and " + boundType);
// If the boundary is not assignable it may still be possible
// to instantiate the generic to an assignable type
if (GenericTypeReflector.erase(boundType).isAssignableFrom(getRawClass())) {
//logger.debug("Raw classes are assignable: " + boundType + ", "
// + getRawClass());
Type instanceType = GenericTypeReflector.getExactSuperType(boundType,
getRawClass());
if (instanceType == null) {
// This happens when the raw class is not a supertype
// of the boundary
//logger.debug("Instance type is null");
isAssignable = false;
break;
}
// GenericClass instanceClass = new GenericClass(instanceType,
// getRawClass());
// logger.debug("Instance type is " + instanceType);
// if (instanceClass.hasTypeVariables())
// logger.debug("Instance type has type variables");
// if (instanceClass.hasWildcardTypes())
// logger.debug("Instance type has wildcard variables");
boundType = GenericUtils.replaceTypeVariable(theType, typeVariable,
instanceType);
// logger.debug("Instance type after replacement is " + boundType);
if (GenericClass.isAssignable(boundType, instanceType)) {
//logger.debug("Found assignable generic exact type: "
// + instanceType);
continue;
} else {
//logger.debug("Is not assignable: " + boundType + " and "
// + instanceType);
}
}
isAssignable = false;
break;
}
}
//logger.debug("Result: is assignable " + isAssignable);
return isAssignable;
}
public boolean satisfiesBoundaries(WildcardType wildcardType) {
return satisfiesBoundaries(wildcardType, getTypeVariableMap());
}
/**
* Determine whether the upper and lower boundaries are satisfied by this
* class
*
* @param wildcardType
* @return
*/
public boolean satisfiesBoundaries(WildcardType wildcardType,
Map, Type> typeMap) {
boolean isAssignable = true;
Map, Type> ownerVariableMap = getTypeVariableMap();
ownerVariableMap.putAll(typeMap);
// ? extends X
for (Type theType : wildcardType.getUpperBounds()) {
logger.debug("Checking upper bound "+theType);
// Special case: Enum is defined as Enum
if (GenericTypeReflector.erase(theType).equals(Enum.class)) {
// if this is an enum then it's ok.
if (isEnum())
continue;
else {
// If it's not an enum, it cannot be assignable to enum!
isAssignable = false;
break;
}
}
Type type = GenericUtils.replaceTypeVariables(theType, ownerVariableMap);
//logger.debug("Bound after variable replacement: " + type);
if (!isAssignableTo(type)) {
// If the boundary is not assignable it may still be possible
// to instantiate the generic to an assignable type
if (GenericTypeReflector.erase(type).isAssignableFrom(getRawClass())) {
Type instanceType = GenericTypeReflector.getExactSuperType(type,
getRawClass());
if (instanceType == null) {
// This happens when the raw class is not a supertype
// of the boundary
isAssignable = false;
break;
}
if (GenericClass.isAssignable(type, instanceType)) {
logger.debug("Found assignable generic exact type: "
+ instanceType);
continue;
}
}
isAssignable = false;
break;
}
}
// ? super X
Type[] lowerBounds = wildcardType.getLowerBounds();
if (lowerBounds != null && lowerBounds.length > 0) {
for (Type theType : wildcardType.getLowerBounds()) {
logger.debug("Checking lower bound "+theType);
Type type = GenericUtils.replaceTypeVariables(theType, ownerVariableMap);
logger.debug("Bound after variable replacement: " + type);
logger.debug("Is assignable from "+toString()+"?");
if (!isAssignableFrom(type)) {
logger.debug("Not assignable from "+toString());
// If the boundary is not assignable it may still be possible
// to instantiate the generic to an assignable type
if(type instanceof WildcardType)
continue;
if (GenericTypeReflector.erase(type).isAssignableFrom(getRawClass())) {
Type instanceType = GenericTypeReflector.getExactSuperType(type,
getRawClass());
if (instanceType == null) {
// This happens when the raw class is not a supertype
// of the boundary
isAssignable = false;
break;
}
if (GenericClass.isAssignable(type, instanceType)) {
logger.debug("Found assignable generic exact type: "
+ instanceType);
continue;
}
}
isAssignable = false;
break;
} else {
logger.debug("Is assignable from "+toString());
}
}
}
return isAssignable;
}
/** {@inheritDoc} */
@Override
public String toString() {
if (type == null) {
LoggingUtils.getEvoLogger().info("Type is null for raw class " + rawClass);
for (StackTraceElement elem : Thread.currentThread().getStackTrace()) {
LoggingUtils.getEvoLogger().info(elem.toString());
}
assert (false);
}
return type.toString();
}
/**
* De-serialize. Need to use current classloader.
*
* @param ois
* @throws ClassNotFoundException
* @throws IOException
*/
private void readObject(ObjectInputStream ois) throws ClassNotFoundException,
IOException {
String name = (String) ois.readObject();
if (name == null) {
this.rawClass = null;
this.type = null;
return;
}
this.rawClass = getClass(name);
Boolean isParameterized = (Boolean) ois.readObject();
if (isParameterized) {
// GenericClass rawType = (GenericClass) ois.readObject();
GenericClass ownerType = (GenericClass) ois.readObject();
@SuppressWarnings("unchecked")
List parameterClasses = (List) ois.readObject();
Type[] parameterTypes = new Type[parameterClasses.size()];
for (int i = 0; i < parameterClasses.size(); i++)
parameterTypes[i] = parameterClasses.get(i).getType();
this.type = new ParameterizedTypeImpl(rawClass, parameterTypes,
ownerType.getType());
} else {
this.type = addTypeParameters(rawClass); //GenericTypeReflector.addWildcardParameters(raw_class);
}
}
/**
* Serialize, but need to abstract classloader away
*
* @param oos
* @throws IOException
*/
private void writeObject(ObjectOutputStream oos) throws IOException {
if (rawClass == null) {
oos.writeObject(null);
} else {
oos.writeObject(rawClass.getName());
if (type instanceof ParameterizedType) {
oos.writeObject(Boolean.TRUE);
ParameterizedType pt = (ParameterizedType) type;
// oos.writeObject(new GenericClass(pt.getRawType()));
oos.writeObject(new GenericClass(pt.getOwnerType()));
List parameterClasses = new ArrayList();
for (Type parameterType : pt.getActualTypeArguments()) {
parameterClasses.add(new GenericClass(parameterType));
}
oos.writeObject(parameterClasses);
} else {
oos.writeObject(Boolean.FALSE);
}
}
}
}
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