344 implement user traits #345
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| /* | ||
| //@HEADER | ||
| // ***************************************************************************** | ||
| // | ||
| // checkpoint_example_user_traits.cc | ||
| // DARMA/magistrate => Serialization Library | ||
| // | ||
| // Copyright 2019 National Technology & Engineering Solutions of Sandia, LLC | ||
| // (NTESS). Under the terms of Contract DE-NA0003525 with NTESS, the U.S. | ||
| // Government retains certain rights in this software. | ||
| // | ||
| // Redistribution and use in source and binary forms, with or without | ||
| // modification, are permitted provided that the following conditions are met: | ||
| // | ||
| // * Redistributions of source code must retain the above copyright notice, | ||
| // this list of conditions and the following disclaimer. | ||
| // | ||
| // * Redistributions in binary form must reproduce the above copyright notice, | ||
| // this list of conditions and the following disclaimer in the documentation | ||
| // and/or other materials provided with the distribution. | ||
| // | ||
| // * Neither the name of the copyright holder nor the names of its | ||
| // contributors may be used to endorse or promote products derived from this | ||
| // software without specific prior written permission. | ||
| // | ||
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | ||
| // AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | ||
| // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | ||
| // ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE | ||
| // LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | ||
| // CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | ||
| // SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | ||
| // INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | ||
| // CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | ||
| // ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | ||
| // POSSIBILITY OF SUCH DAMAGE. | ||
| // | ||
| // Questions? Contact [email protected] | ||
| // | ||
| // ***************************************************************************** | ||
| //@HEADER | ||
| */ | ||
| #include "checkpoint/checkpoint.h" | ||
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| #include "checkpoint_example_user_traits.hpp" | ||
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| int main(int, char**){ | ||
| using namespace test; | ||
| TestObj obj; | ||
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| //Each invocation will be handled based on the traits attached | ||
| auto s_info_a = checkpoint::serialize(obj); | ||
| auto s_info_b = checkpoint::serialize<TestObj, checkpoint_trait>(obj); | ||
| auto s_info_c = checkpoint::serialize<TestObj, checkpoint_trait, checkpoint_trait>(obj); | ||
| auto s_info_d = checkpoint::serialize<TestObj, random_trait, checkpoint_trait>(obj); | ||
| auto s_info_e = checkpoint::serialize<TestObj, checkpoint_trait, random_trait>(obj); | ||
| auto s_info_f = checkpoint::serialize<TestObj, random_trait, random_trait>(obj); | ||
| auto s_info_g = checkpoint::serialize<TestObj, shallow_trait>(obj); | ||
| auto s_info_h = checkpoint::serialize<TestObj, misc::namespace_trait>(obj); | ||
| auto s_info_i = checkpoint::serialize<TestObj, misc::hook_all_trait>(obj); | ||
| } | ||
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| #include "checkpoint/checkpoint.h" | ||
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| struct checkpoint_trait {} CheckpointTrait; | ||
| struct shallow_trait {} ShallowTrait; | ||
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| using checkpoint::has_user_traits_v; | ||
| using checkpoint::has_any_user_traits_v; | ||
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| namespace test { | ||
| struct random_trait {} RandomTrait; | ||
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| struct TestObj { | ||
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| int a = 1; | ||
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| TestObj() {} | ||
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| template< | ||
| typename SerT, | ||
| typename std::enable_if_t< | ||
| not has_user_traits_v<SerT, shallow_trait>, void* | ||
| > = nullptr | ||
| > | ||
| void serialize(SerT& s){ | ||
| if constexpr(has_user_traits_v<SerT, checkpoint_trait>){ | ||
| if(s.isSizing()) printf("Customizing serialization for checkpoint\n"); | ||
| s | a; | ||
| } else { | ||
| if(s.isSizing()) printf("Default serializing testObj\n"); | ||
| } | ||
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| static_assert(not has_user_traits_v<SerT, shallow_trait>, | ||
| "ShallowTrait should have been removed!\n"); | ||
| } | ||
| }; | ||
| } | ||
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| namespace test { | ||
| template< | ||
| typename SerT, | ||
| typename std::enable_if_t< | ||
| has_user_traits_v<SerT, random_trait>, void* | ||
| > = nullptr | ||
| > | ||
| void serialize(SerT& s, TestObj& myObj){ | ||
| if(s.isSizing()){ | ||
| printf("Inserting random extra object serialization step! "); | ||
| } | ||
| myObj.serialize(s); | ||
| } | ||
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| template< | ||
| typename SerT, | ||
| typename std::enable_if_t< | ||
| has_user_traits_v<SerT, shallow_trait>, void* | ||
| > = nullptr | ||
| > | ||
| void serialize(SerT& s, TestObj& myObj){ | ||
| if(s.isSizing()) printf("Removing shallow trait before passing along!\n"); | ||
| auto newS = s.template withoutTraits<shallow_trait>(); | ||
| myObj.serialize(newS); | ||
| } | ||
| } | ||
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| namespace misc { | ||
| template< | ||
| typename SerT, | ||
| typename std::enable_if_t< | ||
| has_user_traits_v<SerT, test::random_trait>, void* | ||
| > = nullptr | ||
| > | ||
| void serialize(SerT& s, test::TestObj& myObj){ | ||
| if(s.isSizing()){ | ||
| printf("Serializers in other namespaces don't usually get found "); | ||
| } | ||
| myObj.serialize(s); | ||
| } | ||
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| const struct namespace_trait {} NamespaceTrait; | ||
| template< | ||
| typename SerT, | ||
| typename std::enable_if_t< | ||
| has_user_traits_v<SerT, namespace_trait>, void* | ||
| > = nullptr | ||
| > | ||
| void serialize(SerT& s, test::TestObj& myObj){ | ||
| if(s.isSizing()){ | ||
| printf("A misc:: trait means we can serialize from misc:: too: "); | ||
| } | ||
| myObj.serialize(s); | ||
| } | ||
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| const struct hook_all_trait {} HookAllTrait; | ||
| template< | ||
| typename SerT, | ||
| typename T, | ||
| typename std::enable_if_t< | ||
| has_user_traits_v<SerT, hook_all_trait>, void* | ||
| > = nullptr | ||
| > | ||
| void serialize(SerT& s, T& myObj){ | ||
| if(s.isSizing()){ | ||
| printf("We can even add on a generic pre-serialize hook: "); | ||
| } | ||
| auto newS = s.template withoutTraits<hook_all_trait>(); | ||
| myObj.serialize(newS); | ||
| } | ||
| } | ||
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Add as a documentation snippet