153 lines
5.1 KiB
Markdown
153 lines
5.1 KiB
Markdown
```text
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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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```
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[](https://github.com/Neargye/nameof/releases)
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[](https://conan.io/center/nameof)
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[](https://github.com/microsoft/vcpkg/tree/master/ports/nameof)
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[](LICENSE)
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[](https://wandbox.org/permlink/VL44h47DKALBE5Oh)
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[](https://godbolt.org/z/s_ecko)
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# Nameof C++
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Header-only C++17 library provides nameof macros and functions to simply obtain the name of a variable, type, function, macro, and enum.
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## Features
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* C++17
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* Header-only
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* Dependency-free
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* Compile-time
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* Name of variable, member variable
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* Name of type, variable type
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* Name of function, member function
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* Name of enum, enum variable
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* Name of macro
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* Enum to string
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## Documentation
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* [Reference](doc/reference.md)
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* [Limitations](doc/limitations.md)
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* [Integration](#Integration)
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## [Examples](example/example.cpp)
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* Nameof
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```cpp
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// Name of variable.
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NAMEOF(somevar) -> "somevar"
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// Name of member variable.
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NAMEOF(person.address.zip_code) -> "zip_code"
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// Name of function.
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NAMEOF(foo<int, float>()) -> "foo"
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// Name of member function.
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NAMEOF(somevar.some_method()) -> "some_method"
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NAMEOF(somevar.some_method<int>()) -> "some_method"
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// Name of macro.
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NAMEOF(__LINE__) -> "__LINE__"
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NAMEOF(NAMEOF(structvar)) -> "NAMEOF"
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```
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* Nameof enum
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```cpp
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enum class Color { RED = 1, BLUE = 2, GREEN = 4 };
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auto color = Color::RED;
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// Name of enum variable.
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NAMEOF_ENUM(color) -> "RED"
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nameof::nameof_enum(color) -> "RED"
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// Static storage enum variable to string.
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// This version is much lighter on the compile times and is not restricted to the enum_range limitation.
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NAMEOF_ENUM_CONST(Color::GREEN) -> "GREEN"
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nameof::nameof_enum<Color::GREEN>() -> "GREEN"
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// Enum flag variable to string.
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NAMEOF_ENUM_FLAG(Color::GREEN | Color::BLUE) -> "GREEN|BLUE"
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nameof::nameof_enum_flag<Color::GREEN>() -> "GREEN|BLUE"
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```
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* Nameof type
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```cpp
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const my::detail::SomeClass<int>& var_ref = var;
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// Name of variable type.
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NAMEOF_TYPE_EXPR(var_ref) -> "my::detail::SomeClass<int>"
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nameof::nameof_type<decltype(var_ref)>() -> "my::detail::SomeClass<int>"
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NAMEOF_FULL_TYPE_EXPR(var_ref) -> "const my::detail::SomeClass<int>&"
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nameof::nameof_full_type<decltype(var_ref)>() -> "const my::detail::SomeClass<int>&"
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NAMEOF_SHORT_TYPE_EXPR(var_ref) -> "SomeClass"
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nameof::nameof_short_type<decltype(var_ref)>() -> "SomeClass"
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using T = const my::detail::SomeClass<int>&;
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// Name of type.
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NAMEOF_TYPE(T) ->"my::detail::SomeClass<int>"
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nameof::nameof_type<T>() -> "my::detail::SomeClass<int>"
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NAMEOF_FULL_TYPE(T) -> "const my::detail::SomeClass<int>&"
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nameof::nameof_full_type<T>() -> "const my::detail::SomeClass<int>&"
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NAMEOF_SHORT_TYPE(T) -> "SomeClass"
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nameof::nameof_short_type<T>() -> "SomeClass"
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my::detail::Base* ptr = new my::detail::Derived();
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// Name of type, using rtti.
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NAMEOF_TYPE_RTTI(*ptr) -> "my::detail::Derived"
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NAMEOF_FULL_TYPE_RTTI(*ptr) -> "volatile const my::detail::Derived&"
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NAMEOF_SHORT_TYPE_RTTI(*ptr) -> "Derived"
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```
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* Compile-time
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```cpp
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constexpr auto somevar_name = NAMEOF(somevar);
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// somevar_name -> "somevar"
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constexpr auto color_name = NAMEOF_ENUM(Color::BLUE); // or nameof::nameof_enum(Color::BLUE)
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// color_name -> "BLUE"
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constexpr auto var_type_name = NAMEOF_TYPE_EXPR(var); // or nameof::nameof_type<decltype(var)>()
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// var_type_name -> "int"
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constexpr auto type_name = NAMEOF_TYPE(T); // or nameof::nameof_type<T>()
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// type_name -> "int"
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```
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## Remarks
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* Before use, read the [limitations](doc/limitations.md) of functionality.
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## Integration
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You should add required file [nameof.hpp](include/nameof.hpp).
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If you are using [vcpkg](https://github.com/Microsoft/vcpkg/) on your project for external dependencies, then you can use the [nameof package](https://github.com/microsoft/vcpkg/tree/master/ports/nameof).
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If you are using [Conan](https://www.conan.io/) to manage your dependencies, merely add `nameof/x.y.z` to your conan's requires, where `x.y.z` is the release version you want to use.
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Alternatively, you can use something like [CPM](https://github.com/TheLartians/CPM) which is based on CMake's `Fetch_Content` module.
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```cmake
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CPMAddPackage(
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NAME nameof
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GITHUB_REPOSITORY Neargye/nameof
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GIT_TAG x.y.z # Where `x.y.z` is the release version you want to use.
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)
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```
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## Compiler compatibility
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* Clang/LLVM >= 5
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* MSVC++ >= 14.11 / Visual Studio >= 2017
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* Xcode >= 10
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* GCC >= 7 (GCC >= 9 for NAMEOF_ENUM)
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## Licensed under the [MIT License](LICENSE)
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