320 lines
9.9 KiB
Markdown
320 lines
9.9 KiB
Markdown
# Reference
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* [`NAMEOF` macro that obtains simple (unqualified) string name of variable, function, macro.](#nameof)
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* [`NAMEOF_FULL` macro that obtains simple (unqualified) full (with template suffix) string name of variable, function, macro.](#nameof_full)
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* [`NAMEOF_RAW` macro that obtains raw string name of variable, function, macro.](#nameof_raw)
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* [`nameof_enum` function that obtains simple (unqualified) string name of enum variable.](#nameof_enum)
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* [`NAMEOF_ENUM` macro that obtains simple (unqualified) string name of enum variable.](#nameof_enum-1)
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* [`NAMEOF_ENUM_CONST` macro that obtains simple (unqualified) string name of static storage enum variable.](#nameof_enum_const)
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* [`nameof_enum_flag` function that obtains simple (unqualified) string name of enum variable.](#nameof_enum_flag)
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* [`NAMEOF_ENUM_FLAG` function that obtains simple (unqualified) string name of enum variable.](#nameof_enum_flag-1)
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* [`nameof_type` function that obtains string name of type, reference and cv-qualifiers are ignored.](#nameof_type)
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* [`nameof_full_type` function that obtains string name of full type, with reference and cv-qualifiers.](#nameof_full_type)
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* [`NAMEOF_TYPE` macro that obtains string name of type, reference and cv-qualifiers are ignored.](#nameof_type-1)
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* [`NAMEOF_FULL_TYPE` macro that obtains string name of full type, with reference and cv-qualifiers.](#nameof_full_type-1)
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* [`NAMEOF_TYPE_EXPR` macro that obtains string name type of expression, reference and cv-qualifiers are ignored.](#nameof_type_expr)
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* [`NAMEOF_FULL_TYPE_EXPR` macro that obtains string name full type of expression, with reference and cv-qualifiers.](#nameof_full_type_expr)
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* [`NAMEOF_TYPE_RTTI` macro that obtains string name type, using RTTI.](#nameof_type_rtti)
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## Synopsis
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* Before use, read the [limitations](limitations.md) of functionality.
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* All functions `constexpr` and `noexcept`.
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* To check is nameof_type supported compiler use macro `NAMEOF_TYPE_SUPPORTED` or constexpr constant `nameof::is_nameof_type_supported`.</br>
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If nameof_type used on unsupported compiler, occurs the compilation error. To suppress error define macro `NAMEOF_TYPE_NO_CHECK_SUPPORT`.
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* To check is nameof_enum supported compiler use macro `NAMEOF_ENUM_SUPPORTED` or constexpr constant `nameof::is_nameof_enum_supported`.</br>
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If nameof_enum used on unsupported compiler, occurs the compilation error. To suppress error define macro `NAMEOF_ENUM_NO_CHECK_SUPPORT`.
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## `NAMEOF`
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* Macro that obtains simple (unqualified) string name of variable, function, macro.
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* Returns `nameof::cstring` - constexpr implementation of an string.
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* If argument does not have name, occurs the compilation error `"Expression does not have a name."`.
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* Examples
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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_FULL`
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* Macro that obtains simple (unqualified) full (with template suffix) string name of variable, function, macro.
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* Returns `nameof::cstring` - constexpr implementation of an string.
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* If argument does not have name, occurs the compilation error `"Expression does not have a name."`.
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* Examples
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```cpp
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// Full name of template function.
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NAMEOF_FULL(foo<int, float>()) -> "foo<int, float>"
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// Full name of template member function.
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NAMEOF_FULL(somevar.some_method<int>()) -> "some_method<int>"
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```
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## `NAMEOF_RAW`
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* Macro that obtains raw string name of variable, function, macro.
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* Returns `nameof::cstring` - constexpr implementation of an string.
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* If argument does not have name, occurs the compilation error `"Expression does not have a name."`.
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* Examples
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```cpp
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NAMEOF_RAW(::somevar.somefield) -> "::somevar.somefield"
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NAMEOF_RAW(&some_class::some_method<int>) -> "&some_class::some_method<int>"
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```
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## `nameof_enum`
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* Function that obtains simple (unqualified) string name of enum variable.
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* Returns `std::string_view`.
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* Enum variable to string.
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* If argument does not have name or [out of range](limitations.md#nameof-enum), returns empty `std::string_view`.
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* Examples
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```cpp
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auto color = Color::RED;
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nameof::nameof_enum(color) -> "RED"
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```
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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](limitations.md#nameof-enum).
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* If argument does not have name, occurs the compilation error `"Enum value does not have a name."`.
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* Examples
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```cpp
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nameof::nameof_enum<Color::GREEN>() -> "GREEN"
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```
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## `NAMEOF_ENUM`
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* Macro that obtains simple (unqualified) string name of enum variable.
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* Returns `std::string_view`.
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* If argument does not have name or [out of range](limitations.md#nameof-enum), returns empty `std::string_view`.
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* Examples
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```cpp
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auto color = Color::RED;
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NAMEOF_ENUM(color) -> "RED"
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```
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## `NAMEOF_ENUM_CONST`
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* Macro that obtains simple (unqualified) string name of static storage enum variable.
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* Returns `std::string_view`.
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* This version is much lighter on the compile times and is not restricted to the enum_range [limitation](limitations.md#nameof-enum).
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* If argument does not have name, occurs the compilation error `"Enum value does not have a name."`.
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* Examples
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```cpp
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NAMEOF_ENUM_CONST(Color::GREEN) -> "GREEN"
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```
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## `nameof_enum_flag`
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* Function that obtains simple (unqualified) string name of enum flag variable.
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* Returns `std::string`.
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* If argument does not have name or [out of range](limitations.md#nameof-enum), returns empty `std::string`.
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* Examples
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```cpp
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enum class AnimalFlags { HasClaws = 1 << 0, CanFly = 1 << 1, EatsFish = 1 << 2, Endangered = 1 << 3 };
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auto flag = AnimalFlags::Endangered;
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nameof_enum_flag(flag) -> "Endangered"
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flag = AnimalFlags::Endangered | AnimalFlags::CanFly;
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nameof_enum_flag(flag) -> "CanFly|Endangered"
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nameof_enum_flag(flag) -> "HasClaws|CanFly"
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nameof_enum(HasClaws | CanFly) -> ""
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```
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## `NAMEOF_ENUM_FLAG`
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* Macro that obtains simple (unqualified) string name of enum flag variable.
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* Returns `std::string`.
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* If argument does not have name or [out of range](limitations.md#nameof-enum), returns empty `std::string`.
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* Examples
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```cpp
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enum class AnimalFlags { HasClaws = 1 << 0, CanFly = 1 << 1, EatsFish = 1 << 2, Endangered = 1 << 3 };
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auto flag = AnimalFlags::Endangered;
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NAMEOF_ENUM_FLAG(flag) -> "Endangered"
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flag = AnimalFlags::Endangered | AnimalFlags::CanFly;
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NAMEOF_ENUM_FLAG(flag) -> "CanFly|Endangered"
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NAMEOF_ENUM_FLAG(flag) -> "HasClaws|CanFly"
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NAMEOF_ENUM(HasClaws | CanFly) -> ""
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```
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## `nameof_type`
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* Function that obtains string name of type, reference and cv-qualifiers are ignored.
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* Returns `nameof::cstring` - constexpr implementation of an string.
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* In all cases, reference and cv-qualifiers are ignored by `nameof_type` (that is, `nameof_type<const T&>() == nameof_type<T>()`).
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* Returns compiler-specific type name.
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* If argument does not have name, occurs the compilation error `"Expression does not have a name."`.
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* Examples
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```cpp
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using T = const int&;
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nameof::nameof_type<T>() -> "int"
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```
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## `nameof_full_type`
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* Function that obtains string name of full type, with reference and cv-qualifiers.
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* Returns `nameof::cstring` - constexpr implementation of an string.
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* Returns compiler-specific type name.
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* If argument does not have name, occurs the compilation error `"Expression does not have a name."`.
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* Examples
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```cpp
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using T = const int&;
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nameof::nameof_full_type<T>() -> "const int&"
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```
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## `NAMEOF_TYPE`
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* Macro that obtains string name of type, reference and cv-qualifiers are ignored.
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* Returns `nameof::cstring` - constexpr implementation of an string.
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* In all cases, reference and cv-qualifiers are ignored by `NAMEOF_TYPE` (that is, `NAMEOF_TYPE(const T&) == NAMEOF_TYPE(T)`).
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* Returns compiler-specific type name.
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* If argument does not have name, occurs the compilation error `"Expression does not have a name."`.
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* Examples
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```cpp
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using T = const int&;
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NAMEOF_TYPE(T) -> "int"
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```
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## `NAMEOF_FULL_TYPE`
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* Macro that obtains string name of full type, with reference and cv-qualifiers.
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* Returns `nameof::cstring` - constexpr implementation of an string.
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* Returns compiler-specific type name.
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* If argument does not have name, occurs the compilation error `"Expression does not have a name."`.
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* Examples
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```cpp
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using T = const int&;
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NAMEOF_TYPE(T) -> "const int&"
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```
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## `NAMEOF_TYPE_EXPR`
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* Macro that obtains string name type of expression, reference and cv-qualifiers are ignored.
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* Returns `nameof::cstring` - constexpr implementation of an string.
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* Returns returns compiler-specific type name.
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* In all cases, reference and cv-qualifiers are ignored.
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* If argument does not have name, occurs the compilation error `"Expression does not have a name."`.
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* Examples
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```cpp
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using T = const int&;
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T var = 42;
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NAMEOF_TYPE_EXPR(var) -> "int"
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```
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## `NAMEOF_FULL_TYPE_EXPR`
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* Macro that obtains string name full type of expression, with reference and cv-qualifiers.
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* Returns `nameof::cstring` - constexpr implementation of an string.
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* Returns compiler-specific type name.
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* If argument does not have name, occurs the compilation error `"Expression does not have a name."`.
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* Examples
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```cpp
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using T = const int&;
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T var = 42;
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NAMEOF_FULL_TYPE_EXPR(var) -> "const int&"
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```
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## `NAMEOF_TYPE_RTTI`
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* Macro that obtains string name of type, using RTTI.
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* Returns demangled RTTI type name.
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* Examples
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```cpp
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struct Base { virtual void foo() {} };
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struct Derived : Base {};
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Base* ptr = new Derived();
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NAMEOF_TYPE_RTTI(ptr) -> "Base *"
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NAMEOF_TYPE_RTTI(*ptr) -> "Derived"
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```
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