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fix(neon-sys): Add a hack for recent electron versions on windows #785

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Merged
merged 1 commit into from
Sep 15, 2021
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fix(neon-sys): Add a hack for recent electron versions on windows #785

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30 changes: 21 additions & 9 deletions crates/neon-sys/native/src/neon.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -221,15 +221,27 @@ extern "C" bool Neon_ArrayBuffer_New(v8::Local<v8::ArrayBuffer> *out, v8::Isolat


extern "C" size_t Neon_ArrayBuffer_Data(v8::Isolate *isolate, void **base_out, v8::Local<v8::ArrayBuffer> buffer) {
#if (V8_MAJOR_VERSION >= 8)
auto contents = buffer->GetBackingStore();
*base_out = contents->Data();
return contents->ByteLength();
#else
v8::ArrayBuffer::Contents contents = buffer->GetContents();
*base_out = contents.Data();
return contents.ByteLength();
#endif
// HACK: `v8::ArrayBuffer::Contents` leaks `std::shared_ptr` in the function signature
// Since recent versions of Electron are built with `clang`, `neon-sys` will fail to compile with MSVC
// As a workaround, when building with MSVC on recent versions of Node, create a temporary `Buffer` to extra
// the contents.
//
// https://github.com/electron/electron/issues/29893
#if _MSC_VER && NODE_MODULE_VERSION >= 89
v8::Local<v8::Object> local;
node::Buffer::New(isolate, buffer, 0, buffer->ByteLength()).ToLocal(&local);
return Neon_Buffer_Data(isolate, base_out, local);
#else
#if (V8_MAJOR_VERSION >= 8)
auto contents = buffer->GetBackingStore();
*base_out = contents->Data();
return contents->ByteLength();
#else
v8::ArrayBuffer::Contents contents = buffer->GetContents();
*base_out = contents.Data();
return contents.ByteLength();
#endif
#endif
}

extern "C" bool Neon_Tag_IsArrayBuffer(v8::Isolate *isolate, v8::Local<v8::Value> value) {
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