static nsresult
SetupParam(const nsXPTParamInfo &p, nsXPTCVariant &v)
{
const nsXPTType &t = p.GetType();
if (p.IsIn() && p.IsDipper())
{
v.ptr = nsnull;
switch (t.TagPart())
{
case nsXPTType::T_ASTRING:
case nsXPTType::T_DOMSTRING:
v.ptr = new nsString();
if (!v.ptr)
return NS_ERROR_OUT_OF_MEMORY;
v.val.p = v.ptr;
v.type = t;
v.flags = nsXPTCVariant::PTR_IS_DATA | nsXPTCVariant::VAL_IS_DOMSTR;
break;
case nsXPTType::T_UTF8STRING:
case nsXPTType::T_CSTRING:
v.ptr = new nsCString();
if (!v.ptr)
return NS_ERROR_OUT_OF_MEMORY;
v.val.p = v.ptr;
v.type = t;
v.flags = nsXPTCVariant::PTR_IS_DATA | nsXPTCVariant::VAL_IS_CSTR;
break;
default:
LOG(("unhandled dipper: type=%d\n", t.TagPart()));
return NS_ERROR_UNEXPECTED;
}
}
else if (p.IsOut())
{
v.ptr = &v.val;
v.type = t;
v.flags = nsXPTCVariant::PTR_IS_DATA;
}
return NS_OK;
}
/**
* Handle 'in', 'inout', and 'out' params
*/
nsresult
nsJavaXPTCStub::SetupJavaParams(const nsXPTParamInfo &aParamInfo,
const XPTMethodDescriptor* aMethodInfo,
PRUint16 aMethodIndex,
nsXPTCMiniVariant* aDispatchParams,
nsXPTCMiniVariant &aVariant, jvalue &aJValue,
nsACString &aMethodSig)
{
nsresult rv = NS_OK;
JNIEnv* env = GetJNIEnv();
const nsXPTType &type = aParamInfo.GetType();
PRUint8 tag = type.TagPart();
switch (tag)
{
case nsXPTType::T_I8:
{
if (!aParamInfo.IsOut()) { // 'in'
aJValue.b = aVariant.val.i8;
aMethodSig.Append('B');
} else { // 'inout' & 'out'
if (aVariant.val.p) {
jbyteArray array = env->NewByteArray(1);
if (!array) {
rv = NS_ERROR_OUT_OF_MEMORY;
break;
}
env->SetByteArrayRegion(array, 0, 1, (jbyte*) aVariant.val.p);
aJValue.l = array;
} else {
aJValue.l = nsnull;
}
aMethodSig.AppendLiteral("[B");
}
}
break;
case nsXPTType::T_I16:
case nsXPTType::T_U8:
{
if (!aParamInfo.IsOut()) { // 'in'
aJValue.s = (tag == nsXPTType::T_I16) ? aVariant.val.i16 :
aVariant.val.u8;
aMethodSig.Append('S');
} else { // 'inout' & 'out'
if (aVariant.val.p) {
jshortArray array = env->NewShortArray(1);
if (!array) {
rv = NS_ERROR_OUT_OF_MEMORY;
break;
}
env->SetShortArrayRegion(array, 0, 1, (jshort*) aVariant.val.p);
aJValue.l = array;
} else {
aJValue.l = nsnull;
}
aMethodSig.AppendLiteral("[S");
}
}
break;
case nsXPTType::T_I32:
case nsXPTType::T_U16:
{
if (!aParamInfo.IsOut()) { // 'in'
aJValue.i = (tag == nsXPTType::T_I32) ? aVariant.val.i32 :
aVariant.val.u16;
aMethodSig.Append('I');
} else { // 'inout' & 'out'
if (aVariant.val.p) {
jintArray array = env->NewIntArray(1);
if (!array) {
rv = NS_ERROR_OUT_OF_MEMORY;
break;
}
env->SetIntArrayRegion(array, 0, 1, (jint*) aVariant.val.p);
aJValue.l = array;
} else {
aJValue.l = nsnull;
}
aMethodSig.AppendLiteral("[I");
}
}
break;
case nsXPTType::T_I64:
case nsXPTType::T_U32:
{
if (!aParamInfo.IsOut()) { // 'in'
aJValue.j = (tag == nsXPTType::T_I64) ? aVariant.val.i64 :
aVariant.val.u32;
aMethodSig.Append('J');
} else { // 'inout' & 'out'
if (aVariant.val.p) {
jlongArray array = env->NewLongArray(1);
if (!array) {
rv = NS_ERROR_OUT_OF_MEMORY;
break;
}
env->SetLongArrayRegion(array, 0, 1, (jlong*) aVariant.val.p);
aJValue.l = array;
} else {
aJValue.l = nsnull;
}
aMethodSig.AppendLiteral("[J");
}
}
break;
case nsXPTType::T_FLOAT:
{
if (!aParamInfo.IsOut()) { // 'in'
aJValue.f = aVariant.val.f;
aMethodSig.Append('F');
} else { // 'inout' & 'out'
if (aVariant.val.p) {
jfloatArray array = env->NewFloatArray(1);
if (!array) {
rv = NS_ERROR_OUT_OF_MEMORY;
break;
}
env->SetFloatArrayRegion(array, 0, 1, (jfloat*) aVariant.val.p);
aJValue.l = array;
} else {
aJValue.l = nsnull;
}
aMethodSig.AppendLiteral("[F");
}
}
break;
// XXX how do we handle unsigned 64-bit values?
case nsXPTType::T_U64:
case nsXPTType::T_DOUBLE:
{
if (!aParamInfo.IsOut()) { // 'in'
aJValue.d = (tag == nsXPTType::T_DOUBLE) ? aVariant.val.d :
aVariant.val.u64;
aMethodSig.Append('D');
} else { // 'inout' & 'out'
if (aVariant.val.p) {
jdoubleArray array = env->NewDoubleArray(1);
if (!array) {
rv = NS_ERROR_OUT_OF_MEMORY;
break;
}
env->SetDoubleArrayRegion(array, 0, 1, (jdouble*) aVariant.val.p);
aJValue.l = array;
} else {
aJValue.l = nsnull;
}
aMethodSig.AppendLiteral("[D");
}
}
break;
case nsXPTType::T_BOOL:
{
if (!aParamInfo.IsOut()) { // 'in'
aJValue.z = aVariant.val.b;
aMethodSig.Append('Z');
} else { // 'inout' & 'out'
if (aVariant.val.p) {
jbooleanArray array = env->NewBooleanArray(1);
if (!array) {
rv = NS_ERROR_OUT_OF_MEMORY;
break;
}
env->SetBooleanArrayRegion(array, 0, 1, (jboolean*) aVariant.val.p);
aJValue.l = array;
} else {
aJValue.l = nsnull;
}
aMethodSig.AppendLiteral("[Z");
}
}
break;
case nsXPTType::T_CHAR:
case nsXPTType::T_WCHAR:
{
if (!aParamInfo.IsOut()) { // 'in'
if (tag == nsXPTType::T_CHAR)
aJValue.c = aVariant.val.c;
else
aJValue.c = aVariant.val.wc;
aMethodSig.Append('C');
} else { // 'inout' & 'out'
if (aVariant.val.p) {
jcharArray array = env->NewCharArray(1);
if (!array) {
rv = NS_ERROR_OUT_OF_MEMORY;
break;
}
env->SetCharArrayRegion(array, 0, 1, (jchar*) aVariant.val.p);
aJValue.l = array;
} else {
aJValue.l = nsnull;
}
aMethodSig.AppendLiteral("[C");
}
}
break;
case nsXPTType::T_CHAR_STR:
case nsXPTType::T_WCHAR_STR:
{
void* ptr = nsnull;
if (!aParamInfo.IsOut()) { // 'in'
ptr = aVariant.val.p;
} else if (aVariant.val.p) { // 'inout' & 'out'
void** variant = static_cast<void**>(aVariant.val.p);
ptr = *variant;
}
jobject str;
if (ptr) {
if (tag == nsXPTType::T_CHAR_STR) {
str = env->NewStringUTF((const char*) ptr);
} else {
const PRUnichar* buf = (const PRUnichar*) ptr;
str = env->NewString(buf, nsCRT::strlen(buf));
}
if (!str) {
rv = NS_ERROR_OUT_OF_MEMORY;
break;
}
} else {
str = nsnull;
}
if (!aParamInfo.IsOut()) { // 'in'
aJValue.l = str;
aMethodSig.AppendLiteral("Ljava/lang/String;");
} else { // 'inout' & 'out'
if (aVariant.val.p) {
aJValue.l = env->NewObjectArray(1, stringClass, str);
if (aJValue.l == nsnull) {
rv = NS_ERROR_OUT_OF_MEMORY;
break;
}
} else {
aJValue.l = nsnull;
}
aMethodSig.AppendLiteral("[Ljava/lang/String;");
}
}
break;
case nsXPTType::T_IID:
{
nsID* iid = nsnull;
if (!aParamInfo.IsOut()) { // 'in'
iid = static_cast<nsID*>(aVariant.val.p);
} else if (aVariant.val.p) { // 'inout' & 'out'
nsID** variant = static_cast<nsID**>(aVariant.val.p);
iid = *variant;
}
jobject str = nsnull;
if (iid) {
char iid_str[NSID_LENGTH];
iid->ToProvidedString(iid_str);
str = env->NewStringUTF(iid_str);
if (!str) {
rv = NS_ERROR_OUT_OF_MEMORY;
break;
}
}
if (!aParamInfo.IsOut()) { // 'in'
aJValue.l = str;
aMethodSig.AppendLiteral("Ljava/lang/String;");
} else { // 'inout' & 'out'
if (aVariant.val.p) {
aJValue.l = env->NewObjectArray(1, stringClass, str);
if (aJValue.l == nsnull) {
rv = NS_ERROR_OUT_OF_MEMORY;
break;
}
} else {
aJValue.l = nsnull;
}
aMethodSig.AppendLiteral("[Ljava/lang/String;");
}
}
break;
case nsXPTType::T_INTERFACE:
case nsXPTType::T_INTERFACE_IS:
{
nsISupports* xpcom_obj = nsnull;
if (!aParamInfo.IsOut()) { // 'in'
xpcom_obj = static_cast<nsISupports*>(aVariant.val.p);
} else if (aVariant.val.p) { // 'inout' & 'out'
nsISupports** variant = static_cast<nsISupports**>(aVariant.val.p);
xpcom_obj = *variant;
}
nsID iid;
rv = GetIIDForMethodParam(mIInfo, aMethodInfo, aParamInfo,
aParamInfo.GetType().TagPart(), aMethodIndex,
aDispatchParams, PR_FALSE, iid);
if (NS_FAILED(rv))
break;
// get name of interface
char* iface_name = nsnull;
nsCOMPtr<nsIInterfaceInfoManager>
iim(do_GetService(NS_INTERFACEINFOMANAGER_SERVICE_CONTRACTID, &rv));
if (NS_FAILED(rv))
break;
rv = iim->GetNameForIID(&iid, &iface_name);
if (NS_FAILED(rv) || !iface_name)
break;
jobject java_stub = nsnull;
if (xpcom_obj) {
// Get matching Java object for given xpcom object
jobject objLoader = env->CallObjectMethod(mJavaWeakRef, getReferentMID);
rv = NativeInterfaceToJavaObject(env, xpcom_obj, iid, objLoader,
&java_stub);
if (NS_FAILED(rv))
break;
}
if (!aParamInfo.IsOut()) { // 'in'
aJValue.l = java_stub;
} else { // 'inout' & 'out'
if (aVariant.val.p) {
aJValue.l = env->NewObjectArray(1, nsISupportsClass, java_stub);
if (aJValue.l == nsnull) {
rv = NS_ERROR_OUT_OF_MEMORY;
break;
}
} else {
aJValue.l = nsnull;
}
aMethodSig.Append('[');
}
if (tag != nsXPTType::T_INTERFACE_IS) {
aMethodSig.AppendLiteral("Lorg/mozilla/interfaces/");
aMethodSig.AppendASCII(iface_name);
aMethodSig.Append(';');
} else {
aMethodSig.AppendLiteral("Lorg/mozilla/interfaces/nsISupports;");
}
nsMemory::Free(iface_name);
}
break;
case nsXPTType::T_ASTRING:
case nsXPTType::T_DOMSTRING:
{
// This only handle 'in' or 'in dipper' params. In XPIDL, the 'out'
// descriptor is mapped to 'in dipper'.
NS_PRECONDITION(aParamInfo.IsIn(), "unexpected param descriptor");
if (!aParamInfo.IsIn()) {
rv = NS_ERROR_UNEXPECTED;
break;
}
nsString* str = static_cast<nsString*>(aVariant.val.p);
if (!str) {
rv = NS_ERROR_FAILURE;
break;
}
jstring jstr = nsnull;
if (!str->IsVoid()) {
jstr = env->NewString(str->get(), str->Length());
if (!jstr) {
rv = NS_ERROR_OUT_OF_MEMORY;
break;
}
}
aJValue.l = jstr;
aMethodSig.AppendLiteral("Ljava/lang/String;");
}
break;
case nsXPTType::T_UTF8STRING:
case nsXPTType::T_CSTRING:
{
// This only handle 'in' or 'in dipper' params. In XPIDL, the 'out'
// descriptor is mapped to 'in dipper'.
NS_PRECONDITION(aParamInfo.IsIn(), "unexpected param descriptor");
if (!aParamInfo.IsIn()) {
rv = NS_ERROR_UNEXPECTED;
break;
}
nsCString* str = static_cast<nsCString*>(aVariant.val.p);
if (!str) {
rv = NS_ERROR_FAILURE;
break;
}
jstring jstr = nsnull;
if (!str->IsVoid()) {
jstr = env->NewStringUTF(str->get());
if (!jstr) {
rv = NS_ERROR_OUT_OF_MEMORY;
break;
}
}
aJValue.l = jstr;
aMethodSig.AppendLiteral("Ljava/lang/String;");
}
break;
// Pass the 'void*' address as a long
case nsXPTType::T_VOID:
{
if (!aParamInfo.IsOut()) { // 'in'
aJValue.j = reinterpret_cast<jlong>(aVariant.val.p);
aMethodSig.Append('J');
} else { // 'inout' & 'out'
if (aVariant.val.p) {
jlongArray array = env->NewLongArray(1);
if (!array) {
rv = NS_ERROR_OUT_OF_MEMORY;
break;
}
env->SetLongArrayRegion(array, 0, 1, (jlong*) aVariant.val.p);
aJValue.l = array;
} else {
aJValue.l = nsnull;
}
aMethodSig.AppendLiteral("[J");
}
}
break;
case nsXPTType::T_ARRAY:
NS_WARNING("array types are not yet supported");
return NS_ERROR_NOT_IMPLEMENTED;
break;
case nsXPTType::T_PSTRING_SIZE_IS:
case nsXPTType::T_PWSTRING_SIZE_IS:
default:
NS_WARNING("unexpected parameter type");
return NS_ERROR_UNEXPECTED;
}
return rv;
}
/**
* Handle 'inout', 'out', and 'retval' params
*/
nsresult
nsJavaXPTCStub::FinalizeJavaParams(const nsXPTParamInfo &aParamInfo,
const XPTMethodDescriptor *aMethodInfo,
PRUint16 aMethodIndex,
nsXPTCMiniVariant* aDispatchParams,
nsXPTCMiniVariant &aVariant, jvalue &aJValue)
{
nsresult rv = NS_OK;
JNIEnv* env = GetJNIEnv();
const nsXPTType &type = aParamInfo.GetType();
PRUint8 tag = type.TagPart();
switch (tag)
{
case nsXPTType::T_I8:
{
jbyte value;
if (aParamInfo.IsRetval()) { // 'retval'
value = aJValue.b;
} else if (aJValue.l) { // 'inout' & 'out'
env->GetByteArrayRegion((jbyteArray) aJValue.l, 0, 1, &value);
}
if (aVariant.val.p)
*((PRInt8 *) aVariant.val.p) = value;
}
break;
case nsXPTType::T_U8:
case nsXPTType::T_I16:
{
jshort value = 0;
if (aParamInfo.IsRetval()) { // 'retval'
value = aJValue.s;
} else if (aJValue.l) { // 'inout' & 'out'
env->GetShortArrayRegion((jshortArray) aJValue.l, 0, 1, &value);
}
if (aVariant.val.p) {
if (tag == nsXPTType::T_U8)
*((PRUint8 *) aVariant.val.p) = value;
else
*((PRInt16 *) aVariant.val.p) = value;
}
}
break;
case nsXPTType::T_U16:
case nsXPTType::T_I32:
{
jint value = 0;
if (aParamInfo.IsRetval()) { // 'retval'
value = aJValue.i;
} else if (aJValue.l) { // 'inout' & 'out'
env->GetIntArrayRegion((jintArray) aJValue.l, 0, 1, &value);
}
if (aVariant.val.p) {
if (tag == nsXPTType::T_U16)
*((PRUint16 *) aVariant.val.p) = value;
else
*((PRInt32 *) aVariant.val.p) = value;
}
}
break;
case nsXPTType::T_U32:
case nsXPTType::T_I64:
{
jlong value = 0;
if (aParamInfo.IsRetval()) { // 'retval'
value = aJValue.j;
} else if (aJValue.l) { // 'inout' & 'out'
env->GetLongArrayRegion((jlongArray) aJValue.l, 0, 1, &value);
}
if (aVariant.val.p) {
if (tag == nsXPTType::T_U32)
*((PRUint32 *) aVariant.val.p) = value;
else
*((PRInt64 *) aVariant.val.p) = value;
}
}
break;
case nsXPTType::T_FLOAT:
{
if (aParamInfo.IsRetval()) { // 'retval'
*((float *) aVariant.val.p) = aJValue.f;
} else if (aJValue.l) { // 'inout' & 'out'
env->GetFloatArrayRegion((jfloatArray) aJValue.l, 0, 1,
(jfloat*) aVariant.val.p);
}
}
break;
// XXX how do we handle 64-bit values?
case nsXPTType::T_U64:
case nsXPTType::T_DOUBLE:
{
jdouble value = 0;
if (aParamInfo.IsRetval()) { // 'retval'
value = aJValue.d;
} else if (aJValue.l) { // 'inout' & 'out'
env->GetDoubleArrayRegion((jdoubleArray) aJValue.l, 0, 1, &value);
}
if (aVariant.val.p) {
if (tag == nsXPTType::T_DOUBLE)
*((double *) aVariant.val.p) = value;
else
*((PRUint64 *) aVariant.val.p) = static_cast<PRUint64>(value);
}
}
break;
case nsXPTType::T_BOOL:
{
if (aParamInfo.IsRetval()) { // 'retval'
*((PRBool *) aVariant.val.p) = aJValue.z;
} else if (aJValue.l) { // 'inout' & 'out'
env->GetBooleanArrayRegion((jbooleanArray) aJValue.l, 0, 1,
(jboolean*) aVariant.val.p);
}
}
break;
case nsXPTType::T_CHAR:
case nsXPTType::T_WCHAR:
{
if (aParamInfo.IsRetval()) { // 'retval'
if (type.TagPart() == nsXPTType::T_CHAR)
*((char *) aVariant.val.p) = aJValue.c;
else
*((PRUnichar *) aVariant.val.p) = aJValue.c;
} else if (aJValue.l) { // 'inout' & 'out'
jchar* array = env->GetCharArrayElements((jcharArray) aJValue.l,
nsnull);
if (!array) {
rv = NS_ERROR_OUT_OF_MEMORY;
break;
}
if (type.TagPart() == nsXPTType::T_CHAR)
*((char *) aVariant.val.p) = array[0];
else
*((PRUnichar *) aVariant.val.p) = array[0];
env->ReleaseCharArrayElements((jcharArray) aJValue.l, array, JNI_ABORT);
}
}
break;
case nsXPTType::T_CHAR_STR:
{
jstring str = nsnull;
if (aParamInfo.IsRetval()) { // 'retval'
str = (jstring) aJValue.l;
} else { // 'inout' & 'out'
str = (jstring) env->GetObjectArrayElement((jobjectArray) aJValue.l, 0);
}
char** variant = static_cast<char**>(aVariant.val.p);
if (str) {
// Get string buffer
const char* char_ptr = env->GetStringUTFChars(str, nsnull);
if (!char_ptr) {
rv = NS_ERROR_OUT_OF_MEMORY;
break;
}
// If new string is different from one passed in, free old string
// and replace with new string.
if (aParamInfo.IsRetval() ||
*variant == nsnull || strcmp(*variant, char_ptr) != 0)
{
if (!aParamInfo.IsRetval() && *variant)
PR_Free(*variant);
*variant = strdup(char_ptr);
if (*variant == nsnull) {
rv = NS_ERROR_OUT_OF_MEMORY;
// don't 'break'; fall through to release chars
}
}
// Release string buffer
env->ReleaseStringUTFChars(str, char_ptr);
} else {
// If we were passed in a string, delete it now, and set to null.
// (Only for 'inout' & 'out' params)
if (*variant && !aParamInfo.IsRetval()) {
PR_Free(*variant);
}
*variant = nsnull;
}
}
break;
case nsXPTType::T_WCHAR_STR:
{
jstring str = nsnull;
if (aParamInfo.IsRetval()) { // 'retval'
str = (jstring) aJValue.l;
} else { // 'inout' & 'out'
str = (jstring) env->GetObjectArrayElement((jobjectArray) aJValue.l, 0);
}
PRUnichar** variant = static_cast<PRUnichar**>(aVariant.val.p);
if (str) {
// Get string buffer
const jchar* wchar_ptr = env->GetStringChars(str, nsnull);
if (!wchar_ptr) {
rv = NS_ERROR_OUT_OF_MEMORY;
break;
}
// If new string is different from one passed in, free old string
// and replace with new string. We
if (aParamInfo.IsRetval() ||
*variant == nsnull || nsCRT::strcmp(*variant, wchar_ptr) != 0)
{
if (!aParamInfo.IsRetval() && *variant)
PR_Free(*variant);
PRUint32 length = nsCRT::strlen(wchar_ptr);
*variant = (PRUnichar*) PR_Malloc((length + 1) * sizeof(PRUnichar));
if (*variant) {
memcpy(*variant, wchar_ptr, length * sizeof(PRUnichar));
(*variant)[length] = 0;
} else {
rv = NS_ERROR_OUT_OF_MEMORY;
// don't 'break'; fall through to release chars
}
}
// Release string buffer
env->ReleaseStringChars(str, wchar_ptr);
} else {
// If we were passed in a string, delete it now, and set to null.
// (Only for 'inout' & 'out' params)
if (*variant && !aParamInfo.IsRetval()) {
PR_Free(*variant);
}
*variant = nsnull;
}
}
break;
case nsXPTType::T_IID:
{
jstring str = nsnull;
if (aParamInfo.IsRetval()) { // 'retval'
str = (jstring) aJValue.l;
} else { // 'inout' & 'out'
str = (jstring) env->GetObjectArrayElement((jobjectArray) aJValue.l, 0);
}
nsID** variant = static_cast<nsID**>(aVariant.val.p);
if (str) {
// Get string buffer
const char* char_ptr = env->GetStringUTFChars(str, nsnull);
if (!char_ptr) {
rv = NS_ERROR_OUT_OF_MEMORY;
break;
}
if (!aParamInfo.IsRetval() && *variant) {
// If we were given an nsID, set it to the new string
nsID* oldIID = *variant;
oldIID->Parse(char_ptr);
} else {
// If the argument that was passed in was null, then we need to
// create a new nsID.
nsID* newIID = new nsID;
if (newIID) {
newIID->Parse(char_ptr);
*variant = newIID;
} else {
rv = NS_ERROR_OUT_OF_MEMORY;
// don't 'break'; fall through to release chars
}
}
// Release string buffer
env->ReleaseStringUTFChars(str, char_ptr);
} else {
// If we were passed in an nsID, delete it now, and set to null.
// (Free only 'inout' & 'out' params)
if (*variant && !aParamInfo.IsRetval()) {
delete *variant;
}
*variant = nsnull;
}
}
break;
case nsXPTType::T_INTERFACE:
case nsXPTType::T_INTERFACE_IS:
{
jobject java_obj = nsnull;
if (aParamInfo.IsRetval()) { // 'retval'
java_obj = aJValue.l;
} else if (aJValue.l) { // 'inout' & 'out'
java_obj = env->GetObjectArrayElement((jobjectArray) aJValue.l, 0);
}
void* xpcom_obj = nsnull;
if (java_obj) {
// Get IID for this param
nsID iid;
rv = GetIIDForMethodParam(mIInfo, aMethodInfo, aParamInfo,
aParamInfo.GetType().TagPart(), aMethodIndex,
aDispatchParams, PR_FALSE, iid);
if (NS_FAILED(rv))
break;
// If the requested interface is nsIWeakReference, then we look for or
// create a stub for the nsISupports interface. Then we create a weak
// reference from that stub.
PRBool isWeakRef;
if (iid.Equals(NS_GET_IID(nsIWeakReference))) {
isWeakRef = PR_TRUE;
iid = NS_GET_IID(nsISupports);
} else {
isWeakRef = PR_FALSE;
}
rv = JavaObjectToNativeInterface(env, java_obj, iid, &xpcom_obj);
if (NS_FAILED(rv))
break;
rv = ((nsISupports*) xpcom_obj)->QueryInterface(iid, &xpcom_obj);
if (NS_FAILED(rv))
break;
// If the function expects a weak reference, then we need to
// create it here.
if (isWeakRef) {
nsISupports* isupports = (nsISupports*) xpcom_obj;
nsCOMPtr<nsISupportsWeakReference> supportsweak =
do_QueryInterface(isupports);
if (supportsweak) {
nsWeakPtr weakref;
supportsweak->GetWeakReference(getter_AddRefs(weakref));
NS_RELEASE(isupports);
xpcom_obj = weakref;
NS_ADDREF((nsISupports*) xpcom_obj);
} else {
xpcom_obj = nsnull;
}
}
}
// For 'inout' params, if the resulting xpcom value is different than the
// one passed in, then we must release the incoming xpcom value.
nsISupports** variant = static_cast<nsISupports**>(aVariant.val.p);
if (aParamInfo.IsIn() && *variant) {
nsCOMPtr<nsISupports> in = do_QueryInterface(*variant);
nsCOMPtr<nsISupports> out = do_QueryInterface((nsISupports*) xpcom_obj);
if (in != out) {
NS_RELEASE(*variant);
}
}
*(static_cast<void**>(aVariant.val.p)) = xpcom_obj;
}
break;
case nsXPTType::T_ASTRING:
case nsXPTType::T_DOMSTRING:
{
NS_PRECONDITION(aParamInfo.IsDipper(), "string argument is not dipper");
if (!aParamInfo.IsDipper()) {
rv = NS_ERROR_UNEXPECTED;
break;
}
jstring jstr = (jstring) aJValue.l;
nsString* variant = static_cast<nsString*>(aVariant.val.p);
if (jstr) {
// Get string buffer
const jchar* wchar_ptr = env->GetStringChars(jstr, nsnull);
if (!wchar_ptr) {
rv = NS_ERROR_OUT_OF_MEMORY;
break;
}
variant->Assign(wchar_ptr);
// release String buffer
env->ReleaseStringChars(jstr, wchar_ptr);
} else {
variant->SetIsVoid(PR_TRUE);
}
}
break;
case nsXPTType::T_UTF8STRING:
case nsXPTType::T_CSTRING:
{
NS_PRECONDITION(aParamInfo.IsDipper(), "string argument is not dipper");
if (!aParamInfo.IsDipper()) {
rv = NS_ERROR_UNEXPECTED;
break;
}
jstring jstr = (jstring) aJValue.l;
nsCString* variant = static_cast<nsCString*>(aVariant.val.p);
if (jstr) {
// Get string buffer
const char* char_ptr = env->GetStringUTFChars(jstr, nsnull);
if (!char_ptr) {
rv = NS_ERROR_OUT_OF_MEMORY;
break;
}
variant->Assign(char_ptr);
// release String buffer
env->ReleaseStringUTFChars(jstr, char_ptr);
} else {
variant->SetIsVoid(PR_TRUE);
}
}
break;
case nsXPTType::T_VOID:
{
if (aParamInfo.IsRetval()) { // 'retval'
aVariant.val.p = reinterpret_cast<void*>(aJValue.j);
} else if (aJValue.l) { // 'inout' & 'out'
env->GetLongArrayRegion((jlongArray) aJValue.l, 0, 1,
(jlong*) aVariant.val.p);
}
}
break;
default:
NS_WARNING("unexpected parameter type");
return NS_ERROR_UNEXPECTED;
}
return rv;
}
