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[C++]Use noexcept in union type move ctor/Add move assingment (#4249)

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* Use noexcept in union type move ctor/Add move assingment

* Add NOEXCEPT macro to deal with _MS_VER/Remove delegating ctor in union type class

* Add FLATBUFFERS_NOEXCEPT to generated union class
This commit is contained in:
moti
2017-03-30 10:00:20 +09:00
committed by Wouter van Oortmerssen
parent 238a8ebb15
commit 2aec880347
4 changed files with 16 additions and 3 deletions
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4
src/idl_gen_cpp.cpp
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@@ -660,11 +660,13 @@ class CppGenerator : public BaseGenerator {
code_ += " flatbuffers::NativeTable *table;";
code_ += "";
code_ += " {{NAME}}Union() : type({{NONE}}), table(nullptr) {}";
code_ += " {{NAME}}Union({{NAME}}Union&& u):";
code_ += " {{NAME}}Union({{NAME}}Union&& u) FLATBUFFERS_NOEXCEPT :";
code_ += " type({{NONE}}), table(nullptr)";
code_ += " { std::swap(type, u.type); std::swap(table, u.table); }";
code_ += " {{NAME}}Union(const {{NAME}}Union &);";
code_ += " {{NAME}}Union &operator=(const {{NAME}}Union &);";
code_ += " {{NAME}}Union &operator=({{NAME}}Union &&u) FLATBUFFERS_NOEXCEPT";
code_ += " { std::swap(type, u.type); std::swap(table, u.table); return *this; }";
code_ += " ~{{NAME}}Union() { Reset(); }";
code_ += "";
code_ += " void Reset();";