/** Checks whether the constructor parsed from API xml file and Java reflection are compliant. */
@SuppressWarnings("unchecked")
private void checkConstructorCompliance() {
for (JDiffConstructor con : jDiffConstructors) {
try {
Constructor<?> c = findMatchingConstructor(con);
if (c == null) {
mResultObserver.notifyFailure(
SignatureTestActivity.FAILURE_TYPE.MISSING_METHOD,
con.toReadableString(mAbsoluteClassName),
"No method with correct signature found:" + con.toSignatureString());
} else {
if (c.isVarArgs()) { // some method's parameter are variable args
con.mModifier |= METHOD_MODIFIER_VAR_ARGS;
}
if (c.getModifiers() != con.mModifier) {
mResultObserver.notifyFailure(
SignatureTestActivity.FAILURE_TYPE.MISMATCH_METHOD,
con.toReadableString(mAbsoluteClassName),
"Non-compatible method found when looking for " + con.toSignatureString());
}
}
} catch (Exception e) {
SignatureTestLog.e("Got exception when checking constructor compliance", e);
mResultObserver.notifyFailure(
SignatureTestActivity.FAILURE_TYPE.CAUGHT_EXCEPTION,
con.toReadableString(mAbsoluteClassName),
"Exception!");
}
}
}
private To newInstanceWithArgWrapper0(Object x)
throws ClassNotFoundException, InstantiationException, IllegalAccessException,
IllegalArgumentException, InvocationTargetException {
Object[] params = new Object[formals.length];
params[0] = new ArgWrapper(x, extending, formals);
if (extending.isVarArgs()) {
params = new Object[] {params};
}
return (To) extending.newInstance(params);
}
void init(Constructor constructor) {
for (TypeVariable param : constructor.getTypeParameters()) {
typeParameters.add(ElementFactory.getTypeParameterElement(param));
}
type = TypeMirrorFactory.get(constructor);
enclosingElement = ElementFactory.get(constructor.getDeclaringClass());
returnType = Typ.getNoType(TypeKind.VOID);
Type[] genericParameterTypes = constructor.getGenericParameterTypes();
Annotation[][] parameterAnnotations = constructor.getParameterAnnotations();
int index = 0;
for (Type param : genericParameterTypes) {
parameters.add(ElementFactory.getVariableElement(param, parameterAnnotations[index++]));
}
varArgs = constructor.isVarArgs();
for (Type type : constructor.getGenericExceptionTypes()) {
thrownTypes.add(TypeMirrorFactory.get(type));
}
}
public static EffectBase getEffect(String effectTypeString, Value[] values) {
EffectBase effect = null;
try {
Class effectClass = (Class) effectMap.get(effectTypeString.toLowerCase());
if (effectClass != null) {
Constructor c = effectClass.getConstructors()[0];
if (c.isVarArgs())
effect = (EffectBase) effectClass.getConstructors()[0].newInstance(new Object[] {values});
else effect = (EffectBase) effectClass.getConstructors()[0].newInstance(new Object[] {});
}
} catch (Exception exc) {
exc.printStackTrace();
}
return effect;
}
/**
* Locate a constructor on the type. There are three kinds of match that might occur:
*
* <ol>
* <li>An exact match where the types of the arguments match the types of the constructor
* <li>An in-exact match where the types we are looking for are subtypes of those defined on the
* constructor
* <li>A match where we are able to convert the arguments into those expected by the
* constructor, according to the registered type converter.
* </ol>
*/
@Override
public ConstructorExecutor resolve(
EvaluationContext context, String typename, List<TypeDescriptor> argumentTypes)
throws AccessException {
try {
TypeConverter typeConverter = context.getTypeConverter();
Class<?> type = context.getTypeLocator().findType(typename);
Constructor<?>[] ctors = type.getConstructors();
Arrays.sort(
ctors,
new Comparator<Constructor<?>>() {
@Override
public int compare(Constructor<?> c1, Constructor<?> c2) {
int c1pl = c1.getParameterTypes().length;
int c2pl = c2.getParameterTypes().length;
return (new Integer(c1pl)).compareTo(c2pl);
}
});
Constructor<?> closeMatch = null;
for (Constructor<?> ctor : ctors) {
Class<?>[] paramTypes = ctor.getParameterTypes();
List<TypeDescriptor> paramDescriptors = new ArrayList<TypeDescriptor>(paramTypes.length);
for (int i = 0; i < paramTypes.length; i++) {
paramDescriptors.add(new TypeDescriptor(new MethodParameter(ctor, i)));
}
ReflectionHelper.ArgumentsMatchInfo matchInfo = null;
if (ctor.isVarArgs() && argumentTypes.size() >= paramTypes.length - 1) {
// *sigh* complicated
// Basically.. we have to have all parameters match up until the varargs one, then the
// rest of what is
// being provided should be
// the same type whilst the final argument to the method must be an array of that (oh, how
// easy...not) -
// or the final parameter
// we are supplied does match exactly (it is an array already).
matchInfo =
ReflectionHelper.compareArgumentsVarargs(
paramDescriptors, argumentTypes, typeConverter);
} else if (paramTypes.length == argumentTypes.size()) {
// worth a closer look
matchInfo =
ReflectionHelper.compareArguments(paramDescriptors, argumentTypes, typeConverter);
}
if (matchInfo != null) {
if (matchInfo.isExactMatch()) {
return new ReflectiveConstructorExecutor(ctor);
} else if (matchInfo.isCloseMatch() || matchInfo.isMatchRequiringConversion()) {
closeMatch = ctor;
}
}
}
return (closeMatch != null ? new ReflectiveConstructorExecutor(closeMatch) : null);
} catch (EvaluationException ex) {
throw new AccessException("Failed to resolve constructor", ex);
}
}
@Override
public Object invoke(
ELContext context, Object base, Object method, Class<?>[] paramTypes, Object[] params) {
if (context == null) {
throw new NullPointerException();
}
if (base instanceof ELClass && method instanceof String) {
context.setPropertyResolved(base, method);
Class<?> clazz = ((ELClass) base).getKlass();
String methodName = (String) method;
if ("<init>".equals(methodName)) {
Constructor<?> match = Util.findConstructor(clazz, paramTypes, params);
Object[] parameters =
Util.buildParameters(match.getParameterTypes(), match.isVarArgs(), params);
Object result = null;
try {
result = match.newInstance(parameters);
} catch (IllegalArgumentException | IllegalAccessException | InstantiationException e) {
throw new ELException(e);
} catch (InvocationTargetException e) {
Throwable cause = e.getCause();
Util.handleThrowable(cause);
throw new ELException(cause);
}
return result;
} else {
Method match = Util.findMethod(clazz, methodName, paramTypes, params);
int modifiers = match.getModifiers();
if (!Modifier.isStatic(modifiers)) {
throw new MethodNotFoundException(
Util.message(
context, "staticFieldELResolver.methodNotFound", methodName, clazz.getName()));
}
Object[] parameters =
Util.buildParameters(match.getParameterTypes(), match.isVarArgs(), params);
Object result = null;
try {
result = match.invoke(null, parameters);
} catch (IllegalArgumentException | IllegalAccessException e) {
throw new ELException(e);
} catch (InvocationTargetException e) {
Throwable cause = e.getCause();
Util.handleThrowable(cause);
throw new ELException(cause);
}
return result;
}
}
return null;
}