blob: 23da7f2ce494f354dc5223abf14dacb36159e4b6 [file] [log] [blame]
* Copyright 2018 The WebRTC project authors. All Rights Reserved.
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
// Originally this class is from Chromium.
// Wrapper used to receive int when calling Java from native. The wrapper
// disallows automatic conversion of anything besides int32_t to a jint.
// Checking is only done in debugging builds.
#ifdef NDEBUG
typedef jint JniIntWrapper;
// This inline is sufficiently trivial that it does not change the
// final code generated by g++.
inline jint as_jint(JniIntWrapper wrapper) {
return wrapper;
class JniIntWrapper {
JniIntWrapper() : i_(0) {}
JniIntWrapper(int32_t i) : i_(i) {} // NOLINT(runtime/explicit)
explicit JniIntWrapper(const JniIntWrapper& ji) : i_(ji.i_) {}
jint as_jint() const { return i_; }
// If you get an "invokes a deleted function" error at the lines below it is
// because you used an implicit conversion to convert e.g. a long to an
// int32_t when calling Java. We disallow this. If you want a lossy
// conversion, please use an explicit conversion in your C++ code.
JniIntWrapper(uint32_t) = delete; // NOLINT(runtime/explicit)
JniIntWrapper(uint64_t) = delete; // NOLINT(runtime/explicit)
JniIntWrapper(int64_t) = delete; // NOLINT(runtime/explicit)
const jint i_;
inline jint as_jint(const JniIntWrapper& wrapper) {
return wrapper.as_jint();
#endif // NDEBUG