protected <T extends CPPObject> Pointer<T> newCPPInstance(
T instance, final Type type, int constructorId, Object... args) {
Pointer<T> peer = null;
try {
final Class<T> typeClass = Utils.getClass(type);
NativeLibrary lib = BridJ.getNativeLibrary(typeClass);
if (BridJ.debug)
info("Creating C++ instance of type " + type + " with args " + Arrays.asList(args));
Pointer.Releaser releaser = newCPPReleaser(type, typeClass, lib);
long size = sizeOf(type, null);
peer = (Pointer) Pointer.allocateBytes(PointerIO.getInstance(type), size, releaser).as(type);
DynamicFunction constructor =
constructorId == SKIP_CONSTRUCTOR
? null
: getConstructor(typeClass, type, lib, constructorId);
if (lib != null && CPPObject.class.isAssignableFrom(typeClass)) {
installRegularVTablePtr(type, lib, peer);
} else {
// TODO ObjCObject : call alloc on class type !!
}
// Setting the C++ template parameters in the instance :
int templateParametersCount = getTemplateParametersCount(typeClass);
if (templateParametersCount > 0) {
Object[] templateArgs = new Object[templateParametersCount];
System.arraycopy(args, 0, templateArgs, 0, templateParametersCount);
setTemplateParameters(instance, typeClass, templateArgs);
}
// Calling the constructor with the non-template parameters :
if (constructor != null) {
Object[] consThisArgs = new Object[args.length - templateParametersCount + 1];
consThisArgs[0] = peer;
System.arraycopy(
args, templateParametersCount, consThisArgs, 1, args.length - templateParametersCount);
constructor.apply(consThisArgs);
}
// Install synthetic virtual table and associate the Java instance to the corresponding native
// pointer :
if (CPPObject.class.isAssignableFrom(typeClass)) {
if (installSyntheticVTablePtr(type, lib, peer))
BridJ.setJavaObjectFromNativePeer(peer.getPeer(), instance);
} else {
// TODO ObjCObject : call alloc on class type !!
}
return peer;
} catch (Exception ex) {
ex.printStackTrace();
if (peer != null) {
peer.release();
}
throw new RuntimeException("Failed to allocate new instance of type " + type, ex);
}
}
public int getPositionInVirtualTable(
Pointer<Pointer<?>> pVirtualTable, Method method, NativeLibrary library) {
// Pointer<?> typeInfo = pVirtualTable.get(1);
int methodsOffset = 0; // library.isMSVC() ? 0 : -2;///2;
String className = getCPPClassName(method.getDeclaringClass());
for (int iVirtual = 0; ; iVirtual++) {
Pointer<?> pMethod = pVirtualTable.get(methodsOffset + iVirtual);
String virtualMethodName = pMethod == null ? null : library.getSymbolName(pMethod.getPeer());
// System.out.println("#\n# At index " + methodsOffset + " + " + iVirtual + " of vptr for
// class " + className + ", found symbol " + Long.toHexString(pMethod.getPeer()) + " = '" +
// virtualMethodName + "'\n#");
if (virtualMethodName == null) {
if (debug) info("\tVtable(" + className + ")[" + iVirtual + "] = null");
return -1;
}
try {
MemberRef mr = library.parseSymbol(virtualMethodName);
if (debug)
info("\tVtable(" + className + ")[" + iVirtual + "] = " + virtualMethodName + " = " + mr);
if (mr != null && mr.matchesSignature(method)) return iVirtual;
else if (library.isMSVC() && !mr.matchesEnclosingType(method))
break; // no NULL terminator in MSVC++ vtables, so we have to guess when we've reached the
// end
} catch (Demangler.DemanglingException ex) {
BridJ.warning(
"Failed to demangle '"
+ virtualMethodName
+ "' during inspection of virtual table for '"
+ method.toGenericString()
+ "' : "
+ ex);
}
}
return -1;
}
public static void testSetGetIntBuffer(int n) {
int[] expected = createExpectedInts(n);
Pointer<Integer> p = Pointer.pointerToInts(expected);
long peer = p.getPeer();
Iterator<Integer> it = p.iterator();
for (int i = 0; i < n; i++) {
Integer obVal = it.next();
int val = obVal;
if (val != expected[i]) throw new RuntimeException("at position i = " + i);
}
}
private String ptrToString(Pointer<?> ptr, NativeLibrary library) {
return ptr == null
? "null"
: Long.toHexString(ptr.getPeer()) + " (" + library.getSymbolName(ptr.getPeer()) + ")";
}
