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Make folly::Optional TBv2 compliant (#490)
Summary: The container implementation for `folly::Optional` currently lacks TBv2 support. This change is a skilfully crafted cut-n-paste of the `std::optional` TBv2 implementation. Reviewed By: ajor Differential Revision: D56139280
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@ -29,3 +29,31 @@ void getSizeType(const %1%<T>& container, size_t& returnArg) {
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}
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}
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}
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}
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"""
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"""
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traversal_func = """
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if (container.has_value()) {
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return returnArg.template delegate<1>([&ctx, &container](auto ret) {
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return OIInternal::getSizeType<Ctx>(ctx, *container, ret);
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});
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} else {
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return returnArg.template delegate<0>(std::identity());
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}
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"""
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[[codegen.processor]]
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type = "types::st::Sum<DB, types::st::Unit<DB>, typename TypeHandler<Ctx, T0>::type>"
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func = """
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static constexpr auto elementField = make_field<Ctx, T0>("el");
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auto sum = std::get<ParsedData::Sum>(d.val);
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el.container_stats = result::Element::ContainerStats {
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.capacity = 1,
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.length = sum.index,
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};
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if (sum.index == 1) {
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el.exclusive_size -= sizeof(T0);
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stack_ins(elementField);
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}
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"""
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