@SuppressWarnings("unchecked")
public static <T> Constructor<T> findConstructor(Class<T> type, Class<?>... paramTypes) {
Constructor<T>[] ctors = (Constructor<T>[]) type.getConstructors();
for (Constructor<T> ctor : ctors)
if (typesMatch(paramTypes, ctor.getParameterTypes())) return ctor;
return null;
}
@NotNull
private static Stream<Constructor<?>> candidateConstructorsSortedByDescendingParameterCount(
@NotNull Class<?> cl) {
return Stream.of(cl.getConstructors())
.filter(ctor -> !ctor.isAnnotationPresent(DalesbredIgnore.class))
.sorted(comparing((Constructor<?> ctor) -> ctor.getParameterTypes().length).reversed());
}
private static Constructor fullConstructor(Class klass) {
Constructor[] array = klass.getConstructors();
for (Constructor constructor : array) {
if (constructor.isAnnotationPresent(FullConstructor.class)) {
return constructor;
}
}
return null;
}
@SuppressWarnings("unchecked")
private <T> T getDefaultInternal(
Class<T> type, List<InstanceProvider> providers, int recursionLevel) {
// Guard against recursion
if (recursionLevel > MAXIMUM_RECURSION) {
return null;
}
for (InstanceProvider generator : providers) {
Object value = generator.create(type);
if (value != null) return (T) value;
}
Constructor<T> minimum = null;
int lastCount = Integer.MAX_VALUE;
// Find the constructor with the fewest parameters
for (Constructor<?> candidate : type.getConstructors()) {
Class<?>[] types = candidate.getParameterTypes();
// Note that we don't allow recursive types - that is, types that
// require itself in the constructor.
if (types.length < lastCount) {
if (!contains(types, type)) {
minimum = (Constructor<T>) candidate;
lastCount = types.length;
// Don't loop again if we've already found the best possible constructor
if (lastCount == 0) break;
}
}
}
// Create the type with this constructor using default values. This might fail, though.
try {
if (minimum != null) {
Object[] params = new Object[lastCount];
Class<?>[] types = minimum.getParameterTypes();
// Fill out
for (int i = 0; i < lastCount; i++) {
params[i] = getDefaultInternal(types[i], providers, recursionLevel + 1);
}
return createInstance(type, minimum, types, params);
}
} catch (Exception e) {
// Nope, we couldn't create this type
}
// No suitable default value could be found
return null;
}
/**
* Check if the class has a default constructor.
*
* @param cls
* @return true if the type has default constructor, false if not.
*/
public static boolean hasDefaultConstructor(Class cls) {
Constructor[] constructors = cls.getConstructors();
// go through all the constructors trying to find one with no
// parameters
for (Constructor constructor : constructors) {
if (constructor.getParameterTypes().length == 0) {
return true;
}
}
return false;
}
@SuppressWarnings("unchecked")
private static <T> Constructor<T> getConstructor(Class<T> type) {
try {
return type.getDeclaredConstructor();
} catch (NoSuchMethodException e) {
// Ignore
}
Constructor[] constructors = type.getConstructors();
if (constructors.length != 1) {
throw new IllegalStateException("Class " + type + " should have a single public constructor");
}
return constructors[0];
}
/**
* Finds the constructor of the given class that is compatible with the given arguments.
*
* @param type the class to find the constructor of
* @param args the arguments
* @return the constructor
*/
public static Constructor findConstructor(Class<?> type, Object[] args) {
outer:
for (Constructor constructor : type.getConstructors()) {
Class<?>[] paramTypes = constructor.getParameterTypes();
if (paramTypes.length != args.length) continue;
for (int i = 0; i < args.length; i++) {
Object arg = args[i];
if (arg != null && !paramTypes[i].isAssignableFrom(arg.getClass())) continue outer;
if (arg == null && paramTypes[i].isPrimitive()) continue outer;
}
return constructor;
}
throw new GrammarException(
"No constructor found for %s and the given %s arguments", type, args.length);
}
private static Object createArgumentPlaceholderForUnknownClass(
Class<?> clazz, Integer placeholderId) throws IllegalAccessException, InstantiationException {
FinalClassArgumentCreator<?> creator = FINAL_CLASS_ARGUMENT_CREATORS.get(clazz);
if (creator != null) return creator.createArgumentPlaceHolder(placeholderId);
for (Constructor constructor : clazz.getConstructors()) {
Class<?>[] params = constructor.getParameterTypes();
if (params.length != 1) continue;
try {
if (params[0] == String.class)
return constructor.newInstance(String.valueOf(placeholderId));
if (isNumericClass(params[0])) return constructor.newInstance(placeholderId);
} catch (IllegalAccessException e1) {
} catch (InvocationTargetException e2) {
}
}
return clazz.newInstance();
}
public ConstructorArgumentConverter(Class<T> clazz, Object... arguments) {
for (Constructor<?> c : clazz.getConstructors()) {
if (isCompatible(c, arguments)) {
this.constructor = (Constructor<T>) c;
break;
}
}
if (constructor == null)
throw new IntrospectionException(
"Unable to find a constructor of "
+ clazz.getName()
+ " compatible with the given arguments");
if (arguments != null)
for (Object argument : arguments) {
argumentConverters.add(new ArgumentConverter<F, Object>(argument));
}
}
public static Entity createEntity(String name, FullChunk chunk, CompoundTag nbt, Object... args) {
Entity entity = null;
if (knownEntities.containsKey(name)) {
Class<? extends Entity> clazz = knownEntities.get(name);
if (clazz == null) {
return null;
}
for (Constructor constructor : clazz.getConstructors()) {
if (entity != null) {
break;
}
if (constructor.getParameterCount() != (args == null ? 2 : args.length + 2)) {
continue;
}
try {
if (args == null || args.length == 0) {
entity = (Entity) constructor.newInstance(chunk, nbt);
} else {
Object[] objects = new Object[args.length + 2];
objects[0] = chunk;
objects[1] = nbt;
System.arraycopy(args, 0, objects, 2, args.length);
entity = (Entity) constructor.newInstance(objects);
}
} catch (Exception e) {
// ignore
}
}
}
return entity;
}
/**
* Read Node config from file config.nodeConfigFileName, including available nodes and their
* possible connections
*/
public NodeFactory(Config config, ProblemData problemData) {
this.config = config;
this.problemData = problemData;
try {
FileInputStream in = new FileInputStream(config.nodeConfigFileName);
Properties props = new Properties();
props.load(in);
in.close();
String separator = "\\s*,\\s*";
String tmp = props.getProperty("sets");
String[] sets = tmp.split(separator);
nodeSets = new NodeSet[sets.length];
int i, j, k;
for (i = 0; i < sets.length; i++) {
nodeSets[i] = new NodeSet(sets[i]);
String[] nodes;
tmp = props.getProperty(sets[i] + "Functions");
if (tmp == null)
Logger.log(
"Warning: when reading "
+ config.nodeConfigFileName
+ ", no functions found for set "
+ sets[i]);
else {
nodes = tmp.split(separator);
for (j = 0; j < nodes.length; j++) {
Class cl = Class.forName("gpalta.nodes." + nodes[j]);
java.lang.reflect.Constructor co = cl.getConstructor();
nodeSets[i].addFunction((Node) co.newInstance());
}
}
tmp = props.getProperty(sets[i] + "Terminals");
if (tmp == null)
Logger.log(
"Warning: when reading "
+ config.nodeConfigFileName
+ ", no terminals found for set "
+ sets[i]);
else {
nodes = tmp.split(separator);
for (j = 0; j < nodes.length; j++) {
Class cl = Class.forName("gpalta.nodes." + nodes[j]);
if (nodes[j].contains("Var")) {
for (k = 0; k < problemData.nVars; k++) {
java.lang.reflect.Constructor[] co = cl.getConstructors();
nodeSets[i].addTerminal((Node) co[0].newInstance(k + 1));
}
} else if (nodes[j].contains("Angle")) {
for (k = 0; k < problemData.nVars - 1; k++) {
java.lang.reflect.Constructor[] co = cl.getConstructors();
nodeSets[i].addTerminal((Node) co[0].newInstance(k + 1));
}
} else {
java.lang.reflect.Constructor co = cl.getConstructor();
nodeSets[i].addTerminal((Node) co.newInstance());
}
}
}
}
for (i = 0; i < nodeSets.length; i++) {
for (Node n : nodeSets[i].getAll()) {
n.setType(nodeSets[i]);
}
}
for (i = 0; i < nodeSets.length; i++) {
for (Node n : nodeSets[i].getAll()) {
tmp = props.getProperty("kids" + n.getClass().getSimpleName());
if (tmp != null) {
String[] kids = tmp.split(separator);
if (kids.length != n.nKids()) {
Logger.log(
"Error reading "
+ config.nodeConfigFileName
+ ": must specify "
+ n.nKids()
+ " kids for "
+ n.getClass().getSimpleName());
}
for (j = 0; j < n.nKids(); j++) {
for (k = 0; k < nodeSets.length; k++) {
if (nodeSets[k].getName().equals(kids[j])) {
n.setTypeOfKids(j, nodeSets[k]);
break;
}
}
if (k == nodeSets.length)
Logger.log(
"Error reading "
+ config.nodeConfigFileName
+ ": Setting kids for "
+ n.getClass().getSimpleName()
+ ", "
+ kids[j]
+ " doesn't match any set name");
}
} else for (j = 0; j < n.nKids(); j++) n.setTypeOfKids(j, nodeSets[i]);
}
}
tmp = props.getProperty("treeRoot");
if (tmp == null) {
Logger.log(
"Error reading " + config.nodeConfigFileName + ": property \"treeRoot\" not present");
}
for (i = 0; i < nodeSets.length; i++) {
if (nodeSets[i].getName().equals(tmp)) {
treeRoot = nodeSets[i];
break;
}
}
if (i == nodeSets.length)
Logger.log(
"Error reading "
+ config.nodeConfigFileName
+ ": Setting treeRoot, "
+ tmp
+ " doesn't match any set name");
} catch (IOException e) {
Logger.log("Error reading " + config.nodeConfigFileName + ":");
Logger.log(e);
} catch (ClassNotFoundException e) {
Logger.log("Error reading " + config.nodeConfigFileName + ":");
Logger.log(e);
} catch (NoSuchMethodException e) {
Logger.log("Error reading " + config.nodeConfigFileName + ":");
Logger.log(e);
} catch (InstantiationException e) {
Logger.log("Error reading " + config.nodeConfigFileName + ":");
Logger.log(e);
} catch (IllegalAccessException e) {
Logger.log("Error reading " + config.nodeConfigFileName + ":");
Logger.log(e);
} catch (InvocationTargetException e) {
Logger.log("Error reading " + config.nodeConfigFileName + ":");
Logger.log(e);
}
}
public static byte[] createAdapterCode(
ObjToIntMap functionNames,
String adapterName,
Class<?> superClass,
Class<?>[] interfaces,
String scriptClassName) {
ClassFileWriter cfw = new ClassFileWriter(adapterName, superClass.getName(), "<adapter>");
cfw.addField(
"factory",
"Laurora/javascript/ContextFactory;",
(short) (ClassFileWriter.ACC_PUBLIC | ClassFileWriter.ACC_FINAL));
cfw.addField(
"delegee",
"Laurora/javascript/Scriptable;",
(short) (ClassFileWriter.ACC_PUBLIC | ClassFileWriter.ACC_FINAL));
cfw.addField(
"self",
"Laurora/javascript/Scriptable;",
(short) (ClassFileWriter.ACC_PUBLIC | ClassFileWriter.ACC_FINAL));
int interfacesCount = interfaces == null ? 0 : interfaces.length;
for (int i = 0; i < interfacesCount; i++) {
if (interfaces[i] != null) cfw.addInterface(interfaces[i].getName());
}
String superName = superClass.getName().replace('.', '/');
Constructor<?>[] ctors = superClass.getConstructors();
for (Constructor<?> ctor : ctors) {
generateCtor(cfw, adapterName, superName, ctor);
}
generateSerialCtor(cfw, adapterName, superName);
if (scriptClassName != null) {
generateEmptyCtor(cfw, adapterName, superName, scriptClassName);
}
ObjToIntMap generatedOverrides = new ObjToIntMap();
ObjToIntMap generatedMethods = new ObjToIntMap();
// generate methods to satisfy all specified interfaces.
for (int i = 0; i < interfacesCount; i++) {
Method[] methods = interfaces[i].getMethods();
for (int j = 0; j < methods.length; j++) {
Method method = methods[j];
int mods = method.getModifiers();
if (Modifier.isStatic(mods) || Modifier.isFinal(mods)) {
continue;
}
String methodName = method.getName();
Class<?>[] argTypes = method.getParameterTypes();
if (!functionNames.has(methodName)) {
try {
superClass.getMethod(methodName, argTypes);
// The class we're extending implements this method and
// the JavaScript object doesn't have an override. See
// bug 61226.
continue;
} catch (NoSuchMethodException e) {
// Not implemented by superclass; fall through
}
}
// make sure to generate only one instance of a particular
// method/signature.
String methodSignature = getMethodSignature(method, argTypes);
String methodKey = methodName + methodSignature;
if (!generatedOverrides.has(methodKey)) {
generateMethod(cfw, adapterName, methodName, argTypes, method.getReturnType(), true);
generatedOverrides.put(methodKey, 0);
generatedMethods.put(methodName, 0);
}
}
}
// Now, go through the superclass's methods, checking for abstract
// methods or additional methods to override.
// generate any additional overrides that the object might contain.
Method[] methods = getOverridableMethods(superClass);
for (int j = 0; j < methods.length; j++) {
Method method = methods[j];
int mods = method.getModifiers();
// if a method is marked abstract, must implement it or the
// resulting class won't be instantiable. otherwise, if the object
// has a property of the same name, then an override is intended.
boolean isAbstractMethod = Modifier.isAbstract(mods);
String methodName = method.getName();
if (isAbstractMethod || functionNames.has(methodName)) {
// make sure to generate only one instance of a particular
// method/signature.
Class<?>[] argTypes = method.getParameterTypes();
String methodSignature = getMethodSignature(method, argTypes);
String methodKey = methodName + methodSignature;
if (!generatedOverrides.has(methodKey)) {
generateMethod(cfw, adapterName, methodName, argTypes, method.getReturnType(), true);
generatedOverrides.put(methodKey, 0);
generatedMethods.put(methodName, 0);
// if a method was overridden, generate a "super$method"
// which lets the delegate call the superclass' version.
if (!isAbstractMethod) {
generateSuper(
cfw,
adapterName,
superName,
methodName,
methodSignature,
argTypes,
method.getReturnType());
}
}
}
}
// Generate Java methods for remaining properties that are not
// overrides.
ObjToIntMap.Iterator iter = new ObjToIntMap.Iterator(functionNames);
for (iter.start(); !iter.done(); iter.next()) {
String functionName = (String) iter.getKey();
if (generatedMethods.has(functionName)) continue;
int length = iter.getValue();
Class<?>[] parms = new Class[length];
for (int k = 0; k < length; k++) parms[k] = ScriptRuntime.ObjectClass;
generateMethod(cfw, adapterName, functionName, parms, ScriptRuntime.ObjectClass, false);
}
return cfw.toByteArray();
}
@SuppressWarnings({"unchecked", "rawtypes"})
public static <T> T newInstance(Class<T> type, boolean strict, Object... parameters) {
if (parameters.length == 0) return newInstanceFromDefaultConstructor(type);
Constructor<T> constructorToUse = null;
try {
Constructor<T>[] constructors = (Constructor<T>[]) type.getConstructors();
List<Constructor<T>> candidates = new ArrayList<Constructor<T>>(constructors.length);
int paramCount = parameters.length;
for (Constructor<T> constructor : constructors)
if (constructor.getParameterTypes().length == paramCount) candidates.add(constructor);
if (candidates.size() == 1) constructorToUse = candidates.get(0);
else if (candidates.size() == 0)
throw new ConfigurationError(
"No constructor with " + paramCount + " parameters found for " + type);
else {
// there are several candidates - find the first one with matching types
Class<?>[] paramTypes = new Class[parameters.length];
for (int i = 0; i < parameters.length; i++) paramTypes[i] = parameters[i].getClass();
for (Constructor c : type.getConstructors()) {
if (typesMatch(c.getParameterTypes(), paramTypes)) {
constructorToUse = c;
break;
}
}
// there is no ideal match
if (constructorToUse == null) {
if (strict)
throw new NoSuchMethodException(
"No appropriate constructor found: "
+ type
+ '('
+ ArrayFormat.format(", ", paramTypes)
+ ')');
Exception mostRecentException = null;
for (Constructor<T> candidate : candidates) {
try {
return newInstance(candidate, strict, parameters);
} catch (Exception e) {
mostRecentException = e;
logger.warn("Exception in constructor call: " + candidate, e);
continue; // ignore exception and try next constructor
}
}
// no constructor could be called without exception
String errMsg =
(mostRecentException != null
? "None of these constructors could be called without exception: "
+ candidates
+ ", latest exception: "
+ mostRecentException
: type
+ " has no appropriate constructor for the arguments "
+ ArrayFormat.format(", ", parameters));
throw new ConfigurationError(errMsg);
}
}
if (!strict) parameters = convertArray(parameters, constructorToUse.getParameterTypes());
return newInstance(constructorToUse, parameters);
} catch (SecurityException e) {
throw ExceptionMapper.configurationException(e, constructorToUse);
} catch (NoSuchMethodException e) {
throw ExceptionMapper.configurationException(e, type);
}
}
private <T> Class<? extends T> generateUnderLock(Class<T> type) {
Map<Class<?>, Class<?>> cache = GENERATED_CLASSES.get(getClass());
if (cache == null) {
// WeakHashMap won't work here. It keeps a strong reference to the mapping value, which is the
// generated class in this case
// However, the generated class has a strong reference to the source class (by extending it),
// so the keys will always be
// strongly reachable while this Class is strongly reachable. Use weak references for both key
// and value of the mapping instead.
cache = new ReferenceMap(AbstractReferenceMap.WEAK, AbstractReferenceMap.WEAK);
GENERATED_CLASSES.put(getClass(), cache);
}
Class<?> generatedClass = cache.get(type);
if (generatedClass != null) {
return generatedClass.asSubclass(type);
}
if (Modifier.isPrivate(type.getModifiers())) {
throw new GradleException(
String.format(
"Cannot create a proxy class for private class '%s'.", type.getSimpleName()));
}
if (Modifier.isAbstract(type.getModifiers())) {
throw new GradleException(
String.format(
"Cannot create a proxy class for abstract class '%s'.", type.getSimpleName()));
}
Class<? extends T> subclass;
try {
ClassMetaData classMetaData = inspectType(type);
ClassBuilder<T> builder = start(type, classMetaData);
builder.startClass();
if (!DynamicObjectAware.class.isAssignableFrom(type)) {
if (ExtensionAware.class.isAssignableFrom(type)) {
throw new UnsupportedOperationException(
"A type that implements ExtensionAware must currently also implement DynamicObjectAware.");
}
builder.mixInDynamicAware();
}
if (!GroovyObject.class.isAssignableFrom(type)) {
builder.mixInGroovyObject();
}
builder.addDynamicMethods();
if (classMetaData.conventionAware && !IConventionAware.class.isAssignableFrom(type)) {
builder.mixInConventionAware();
}
Class noMappingClass = Object.class;
for (Class<?> c = type; c != null && noMappingClass == Object.class; c = c.getSuperclass()) {
if (c.getAnnotation(NoConventionMapping.class) != null) {
noMappingClass = c;
}
}
Set<PropertyMetaData> conventionProperties = new HashSet<PropertyMetaData>();
for (PropertyMetaData property : classMetaData.properties.values()) {
if (SKIP_PROPERTIES.contains(property.name)) {
continue;
}
if (property.injector) {
builder.addInjectorProperty(property);
for (Method getter : property.getters) {
builder.applyServiceInjectionToGetter(property, getter);
}
for (Method setter : property.setters) {
builder.applyServiceInjectionToSetter(property, setter);
}
continue;
}
boolean needsConventionMapping = false;
if (classMetaData.isExtensible()) {
for (Method getter : property.getters) {
if (!Modifier.isFinal(getter.getModifiers())
&& !getter.getDeclaringClass().isAssignableFrom(noMappingClass)) {
needsConventionMapping = true;
break;
}
}
}
if (needsConventionMapping) {
conventionProperties.add(property);
builder.addConventionProperty(property);
for (Method getter : property.getters) {
builder.applyConventionMappingToGetter(property, getter);
}
}
if (needsConventionMapping) {
for (Method setter : property.setters) {
if (!Modifier.isFinal(setter.getModifiers())) {
builder.applyConventionMappingToSetter(property, setter);
}
}
}
}
Set<Method> actionMethods = classMetaData.missingOverloads;
for (Method method : actionMethods) {
builder.addActionMethod(method);
}
// Adds a set method for each mutable property
for (PropertyMetaData property : classMetaData.properties.values()) {
if (property.setters.isEmpty()) {
continue;
}
if (Iterable.class.isAssignableFrom(property.getType())) {
// Currently not supported
continue;
}
if (property.setMethods.isEmpty()) {
for (Method setter : property.setters) {
builder.addSetMethod(property, setter);
}
} else if (conventionProperties.contains(property)) {
for (Method setMethod : property.setMethods) {
builder.applyConventionMappingToSetMethod(property, setMethod);
}
}
}
for (Constructor<?> constructor : type.getConstructors()) {
if (Modifier.isPublic(constructor.getModifiers())) {
builder.addConstructor(constructor);
}
}
subclass = builder.generate();
} catch (Throwable e) {
throw new GradleException(
String.format("Could not generate a proxy class for class %s.", type.getName()), e);
}
cache.put(type, subclass);
cache.put(subclass, subclass);
return subclass;
}
