private static Field getReflectionSlotField(Class<?> reflectionClass) {
try {
Field field = reflectionClass.getDeclaredField("slot");
field.setAccessible(true);
return field;
} catch (NoSuchFieldException | SecurityException e) {
throw new GraalInternalError(e);
}
}
public ResolvedJavaMethod lookupJavaConstructor(Constructor<?> reflectionConstructor) {
try {
Class<?> holder = reflectionConstructor.getDeclaringClass();
final int slot = reflectionConstructorSlot.getInt(reflectionConstructor);
final long metaspaceMethod = runtime.getCompilerToVM().getMetaspaceMethod(holder, slot);
return HotSpotResolvedJavaMethod.fromMetaspace(metaspaceMethod);
} catch (IllegalArgumentException | IllegalAccessException e) {
throw new GraalInternalError(e);
}
}
public ResolvedJavaField lookupJavaField(Field reflectionField) {
String name = reflectionField.getName();
Class<?> fieldHolder = reflectionField.getDeclaringClass();
Class<?> fieldType = reflectionField.getType();
// java.lang.reflect.Field's modifiers should be enough here since VM internal modifier bits
// are not used (yet).
final int modifiers = reflectionField.getModifiers();
final long offset =
Modifier.isStatic(modifiers)
? unsafe.staticFieldOffset(reflectionField)
: unsafe.objectFieldOffset(reflectionField);
ResolvedJavaType holder = HotSpotResolvedObjectType.fromClass(fieldHolder);
ResolvedJavaType type = HotSpotResolvedObjectType.fromClass(fieldType);
if (offset != -1) {
HotSpotResolvedObjectType resolved = (HotSpotResolvedObjectType) holder;
return resolved.createField(name, type, offset, modifiers);
} else {
throw GraalInternalError.shouldNotReachHere("unresolved field " + reflectionField);
}
}