wip
This commit is contained in:
Neargye
parent
80e2b5bbcb
commit
cb8c808506
1 changed files with 233 additions and 100 deletions
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@ -35,53 +35,107 @@
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#include <string>
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#include <ostream>
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#if (defined(__cpp_constexpr) && __cpp_constexpr >= 201304L) || (defined(_MSC_VER) && _MSC_VER >= 1910)
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# define NAMEOF_CONSTEXPR constexpr
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# define NAMEOF_HAS_CONSTEXPR 1
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#else
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# define NAMEOF_CONSTEXPR
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# define NAMEOF_HAS_CONSTEXPR 0
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#if defined(__cpp_constexpr) && __cpp_constexpr >= 201304L
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# define NAMEOF_HAS_CONSTEXPR14 1
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#endif
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namespace nameof {
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namespace detail {
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namespace nstd {
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template <typename T>
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struct identity {
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using type = T;
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};
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template <typename T>
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struct remove_all_pointers
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using identity_t = typename identity<T>::type;
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// Removes all pointer from the given type.
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template <typename T>
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struct remove_all_p
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: std::conditional<std::is_pointer<T>::value,
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remove_all_pointers<typename std::remove_pointer<T>::type>,
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identity<T>>::type {};
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remove_all_p<typename std::remove_pointer<T>::type>,
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identity<T>
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>::type {};
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template <typename T>
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using Decay = std::remove_reference<typename std::remove_cv<typename remove_all_pointers<T>::type>::type>;
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using remove_all_p_t = typename remove_all_p<T>::type;
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inline constexpr bool StrEquals(const char* lhs, const char* rhs, std::size_t size) {
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// Removes const, volatile, reference specifiers from the given type.
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template <typename T>
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struct remove_cvr {
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using type = typename std::remove_cv<typename std::remove_reference<T>::type>::type;
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};
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template <typename T>
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using remove_cvr_t = typename remove_cvr<T>::type;
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// Removes all const, volatile, reference, pointer specifiers from the given type.
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template <typename T>
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struct remove_all_cvrp {
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using type = typename remove_cvr<typename remove_all_p<typename remove_cvr<T>::type>::type>::type;
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};
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template <typename T>
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using remove_all_cvrp_t = typename remove_all_cvrp<T>::type;
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// Removes all const, volatile, reference, pointer, array extents specifiers from the given type.
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template <typename T, typename U = typename remove_all_cvrp<T>::type>
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struct remove_all_cvrpe
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: std::conditional<std::is_array<U>::value,
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remove_all_cvrpe<typename std::remove_all_extents<U>::type>,
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identity<U>
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>::type {};
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template <typename T>
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using remove_all_cvrpe_t = typename remove_all_cvrpe<T>::type;
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} // namespace nstd
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constexpr bool StrEquals(const char* lhs, const char* rhs, std::size_t size) {
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#if defined(NAMEOF_HAS_CONSTEXPR14)
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for (std::size_t i = 0; i < size; ++i) {
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if (lhs[i] != rhs[i]) {
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return false;
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}
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}
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return true;
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#else
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return (size == 0) ? (lhs[0] == rhs[0]) : ((lhs[size - 1] == rhs[size - 1]) && StrEquals(lhs, rhs, size - 1));
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#endif
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}
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inline constexpr std::size_t StrLen(const char* str, std::size_t size = 0) {
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return (str == nullptr) ? 0 : ((str[size] == '\0') ? size : StrLen(str, size + 1));
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constexpr std::size_t StrLen(const char* str, std::size_t size = 0) {
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#if defined(NAMEOF_HAS_CONSTEXPR14)
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for (; str != nullptr; ++size) {
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if (str[size] == '\0') {
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return size;
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}
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}
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return size;
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#else
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return (str[size] == '\0') ? size : StrLen(str, size + 1);
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#endif
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}
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// STD like compile-time const char* string.
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class cstring final {
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const char* str_;
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const std::size_t size_;
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std::size_t size_;
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public:
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inline constexpr cstring(const char* str, std::size_t length, std::size_t prefix = 0, std::size_t suffix = 0) noexcept
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constexpr cstring(const char* str, std::size_t size, std::size_t prefix = 0, std::size_t suffix = 0) noexcept
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: str_{str + prefix},
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size_{length - prefix - suffix} {}
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size_{size - prefix - suffix} {}
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inline constexpr cstring() noexcept : cstring{nullptr, 0, 0, 0} {}
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constexpr cstring() noexcept : cstring{nullptr, 0, 0, 0} {}
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inline constexpr cstring(const char* str) noexcept : cstring{str, StrLen(str), 0, 0} {}
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constexpr cstring(const char* str) noexcept : cstring{str, StrLen(str), 0, 0} {}
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cstring(const cstring&) = default;
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@ -93,83 +147,87 @@ class cstring final {
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~cstring() = default;
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inline constexpr std::size_t size() const noexcept { return size_; }
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constexpr std::size_t size() const noexcept { return size_; }
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inline constexpr std::size_t length() const noexcept { return size_; }
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constexpr std::size_t length() const noexcept { return size_; }
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inline constexpr bool empty() const noexcept { return size_ == 0; }
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constexpr bool empty() const noexcept { return size_ == 0; }
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inline constexpr const char* begin() const noexcept { return str_; }
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constexpr const char* begin() const noexcept { return str_; }
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inline constexpr const char* end() const noexcept { return str_ + size_; }
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constexpr const char* end() const noexcept { return str_ + size_; }
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inline constexpr const char* cbegin() const noexcept { return begin(); }
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constexpr const char* cbegin() const noexcept { return begin(); }
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inline constexpr const char* cend() const noexcept { return end(); }
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constexpr const char* cend() const noexcept { return end(); }
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inline constexpr const char& operator[](std::size_t i) const { return str_[i]; }
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constexpr const char& operator[](std::size_t i) const { return str_[i]; }
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inline constexpr const char& front() const { return str_[0]; }
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constexpr const char& front() const { return str_[0]; }
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inline constexpr const char& back() const { return str_[size_ - 1]; }
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constexpr const char& back() const { return str_[size_ - 1]; }
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inline constexpr const char* data() const noexcept { return str_; }
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constexpr const char* data() const noexcept { return str_; }
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inline constexpr cstring remove_prefix(std::size_t n) const {
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constexpr cstring remove_prefix(std::size_t n) const {
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return {str_ + n, size_ - n};
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}
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inline constexpr cstring remove_suffix(std::size_t n) const {
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constexpr cstring add_prefix(std::size_t n) const {
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return {str_ - n, size_ + n};
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}
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constexpr cstring remove_suffix(std::size_t n) const {
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return {str_, size_ - n};
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}
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inline constexpr cstring substr(std::size_t pos, std::size_t n) const {
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constexpr cstring add_suffix(std::size_t n) const {
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return {str_, size_ + n};
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}
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constexpr cstring substr(std::size_t pos, std::size_t n) const {
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return {str_ + pos, n};
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}
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inline friend constexpr bool operator==(const cstring& lhs, const cstring& rhs) noexcept {
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return (lhs.size_ == rhs.size_) && StrEquals(lhs.begin(), rhs.begin(), lhs.size());
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friend constexpr bool operator==(const cstring& lhs, const cstring& rhs) noexcept {
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return (lhs.size_ == rhs.size_) && StrEquals(lhs.str_, rhs.str_, lhs.size_);
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}
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inline friend constexpr bool operator!=(const cstring& lhs, const cstring& rhs) noexcept {
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friend constexpr bool operator!=(const cstring& lhs, const cstring& rhs) noexcept {
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return !(lhs == rhs);
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}
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inline friend std::ostream& operator<<(std::ostream& os, const cstring& str) {
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os.write(str.begin(), str.size());
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friend std::ostream& operator<<(std::ostream& os, const cstring& str) {
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os.write(str.str_, str.size_);
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os.write("!", 1);
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return os;
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}
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inline operator std::string() const { return std::string(begin(), size()); }
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operator std::string() const { return std::string(str_, size_); }
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};
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inline constexpr bool IsLexeme(char s) noexcept {
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constexpr bool IsLexeme(char s) noexcept {
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return !((s >= '0' && s <= '9') || (s >= 'a' && s <= 'z') || (s >= 'A' && s <= 'Z') || s == '_');
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}
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inline NAMEOF_CONSTEXPR cstring NameofBase(const char* name, std::size_t length, bool with_suffix) noexcept {
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std::size_t p = 0;
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if(IsLexeme(name[length - 1])) {
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for (std::size_t i = length, h = 0; i > 0; --i) {
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if (h == 0 && (IsLexeme(name[i - 1]) && name[i - 1] != '>')) {
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++p;
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continue;
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}
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#if defined(NAMEOF_HAS_CONSTEXPR14)
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constexpr cstring NameofBase(const cstring& name, bool with_suffix) noexcept {
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std::size_t s = 0;
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for (std::size_t i = name.size(), h = 0; i > 0; --i) {
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if (name[i - 1] == '>') {
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++h;
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++p;
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++s;
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continue;
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}
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if (name[i - 1] == '<') {
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--h;
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++p;
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++s;
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continue;
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}
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if (h != 0) {
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++p;
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++s;
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continue;
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}
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@ -177,19 +235,67 @@ inline NAMEOF_CONSTEXPR cstring NameofBase(const char* name, std::size_t length,
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break;
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}
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}
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}
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for (std::size_t i = length - p; i > 0; --i) {
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for (std::size_t i = name.size() - s; i > 0; --i) {
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if (IsLexeme(name[i - 1])) {
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return {&name[i], length - i - (with_suffix ? 0 : p)};
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return name.remove_prefix(i).remove_suffix(with_suffix ? 0 : s);
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}
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}
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return {name, length - (with_suffix ? 0 : p)};
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return name.remove_suffix(with_suffix ? 0 : s);
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}
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#else
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constexpr std::size_t NameofBaseImpl1(const cstring& name, std::size_t h = 0, std::size_t s = 0) noexcept {
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return name[name.size() - 1 - s] == '>'
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? NameofBaseImpl1(name, h + 1, s + 1)
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: name[name.size() - 1 - s] == '<'
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? NameofBaseImpl1(name, h - 1, s + 1)
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: h == 0 ? s : NameofBaseImpl1(name, h, s + 1);
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}
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inline constexpr cstring NameofRaw(const char* name, std::size_t length) noexcept {
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return {name, length};
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constexpr cstring NameofBaseImpl2(const cstring& name, const std::size_t p = 0) noexcept {
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return p == name.size() ? name : IsLexeme(name[name.size() - 1 - p])
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? name.remove_prefix(name.size() - p)
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: NameofBaseImpl2(name, p + 1);
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}
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constexpr cstring NameofBaseImpl3(const cstring& name, std::size_t s, bool with_suffix) noexcept {
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return NameofBaseImpl2(name.remove_suffix(s)).add_suffix(with_suffix ? s : 0);
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}
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constexpr cstring NameofBase(const cstring& name, bool with_suffix) noexcept {
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return NameofBaseImpl3(name, NameofBaseImpl1(name), with_suffix);
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}
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#endif
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constexpr cstring RemoveSpace(const cstring& name) noexcept {
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return name.back() == ' ' ? RemoveSpace(name.remove_suffix(1)) : name;
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}
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constexpr cstring RemoveClassPrefix(const cstring& name) noexcept {
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return (name.size() > sizeof("class") && name[0] == 'c' && name[1] == 'l' &&
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name[2] == 'a' && name[3] == 's' && name[4] == 's' && name[5] == ' ')
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? name.remove_prefix(sizeof("class"))
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: name;
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}
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constexpr cstring RemoveEnumPrefix(const cstring& name) noexcept {
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return (name.size() > sizeof("enum") && name[0] == 'e' && name[1] == 'n' &&
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name[2] == 'u' && name[3] == 'm' && name[4] == ' ')
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? name.remove_prefix(sizeof("enum"))
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: name;
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}
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constexpr cstring RemoveStructPrefix(const cstring& name) noexcept {
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return (name.size() > sizeof("struct") && name[0] == 's' && name[1] == 't' &&
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name[2] == 'r' && name[3] == 'u' && name[4] == 'c' && name[5] == 't' && name[6] == ' ')
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? name.remove_prefix(sizeof("struct"))
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: name;
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}
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constexpr cstring NameofTypeRawImpl(const cstring& name, bool raw) noexcept {
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return raw
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? name
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: RemoveClassPrefix(RemoveStructPrefix(RemoveEnumPrefix(RemoveSpace(name))));
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}
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} // namespace detail
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@ -197,56 +303,77 @@ inline constexpr cstring NameofRaw(const char* name, std::size_t length) noexcep
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template <typename T,
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typename = typename std::enable_if<!std::is_reference<T>::value &&
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!std::is_void<T>::value>::type>
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inline NAMEOF_CONSTEXPR detail::cstring Nameof(const T&, const char* name, std::size_t length, bool with_suffix = false) noexcept {
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return detail::NameofBase(name, length, with_suffix);
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constexpr detail::cstring Nameof(const T&, const char* name, std::size_t size, bool with_suffix) noexcept {
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return detail::NameofBase({name, size}, with_suffix);
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}
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template <typename T,
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typename = typename std::enable_if<!std::is_enum<T>::value &&
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!std::is_function<T>::value &&
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!std::is_member_function_pointer<T>::value>::type>
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inline NAMEOF_CONSTEXPR detail::cstring Nameof(T&&, const char*, std::size_t, bool) = delete;
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constexpr detail::cstring Nameof(T&&, const char*, std::size_t, bool) = delete;
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constexpr detail::cstring NameofRaw(const char* name, std::size_t size) noexcept {
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return {name, size};
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}
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template <typename T>
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inline NAMEOF_CONSTEXPR detail::cstring NameofTypeRaw() noexcept {
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constexpr detail::cstring NameofTypeRaw(bool raw = false) noexcept {
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#if defined(__clang__)
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return {__PRETTY_FUNCTION__,
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return detail::NameofTypeRawImpl(
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{__PRETTY_FUNCTION__,
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sizeof(__PRETTY_FUNCTION__) - 1,
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sizeof("detail::cstring nameof::NameofTypeRaw() [T = ") - 1,
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sizeof("]") - 1};
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sizeof("detail::cstring nameof::NameofTypeRaw(bool) [T = nameof::detail::nstd::identity<") - 1,
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sizeof(">]") - 1},
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raw);
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#elif defined(__GNUC__)
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return {__PRETTY_FUNCTION__,
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return detail::NameofTypeRawImpl(
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{__PRETTY_FUNCTION__,
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sizeof(__PRETTY_FUNCTION__) - 1,
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# if NAMEOF_HAS_CONSTEXPR
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sizeof("constexpr nameof::detail::cstring nameof::NameofTypeRaw() [with T = ") - 1,
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# else
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sizeof("nameof::detail::cstring nameof::NameofTypeRaw() [with T = ") - 1,
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# endif
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sizeof("]") - 1};
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sizeof("constexpr nameof::detail::cstring nameof::NameofTypeRaw(bool) [with T = nameof::detail::nstd::identity<") - 1,
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sizeof(">]") - 1},
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raw);
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#elif defined(_MSC_VER)
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return {__FUNCSIG__,
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return detail::NameofTypeRawImpl(
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{__FUNCSIG__,
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sizeof(__FUNCSIG__) - 1,
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sizeof("class nameof::detail::cstring __cdecl nameof::NameofTypeRaw<") - 1,
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sizeof(">(void) noexcept") - 1};
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sizeof("class nameof::detail::cstring __cdecl nameof::NameofTypeRaw<struct nameof::detail::nstd::identity<") - 1,
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sizeof(">>(bool) noexcept") - 1},
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raw);
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#else
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return {};
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#endif
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}
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template <typename T, typename D = typename detail::Decay<T>::type>
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inline NAMEOF_CONSTEXPR detail::cstring NameofType() noexcept {
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const auto raw_type_name = NameofTypeRaw<D>();
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return detail::NameofBase(raw_type_name.begin(), raw_type_name.length(), false);
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template <typename T, typename D = detail::nstd::identity<detail::nstd::remove_all_cvrpe_t<T>>>
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constexpr detail::cstring NameofType(bool with_suffix = false) noexcept {
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return detail::NameofBase(NameofTypeRaw<D>(), with_suffix);
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}
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} // namespace nameof
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#if defined(__GNUC__) || defined(__clang__)
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#if defined(__clang__)
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# if __has_feature(cxx_rtti)
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# define NAMEOF_HAS_RTTI 1
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# endif
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#elif defined(__GNUC__)
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# if defined(__GXX_RTTI)
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# define NAMEOF_HAS_RTTI 1
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# endif
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#elif defined(_MSC_VER) && defined(_CPPRTTI)
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# if defined(_CPPRTTI)
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# define NAMEOF_HAS_RTTI 1
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# endif
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#endif
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#if defined(NAMEOF_HAS_RTTI) || defined(_MSC_VER)
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#include <typeinfo>
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// Used to obtain the raw string name of a variable, type, member, function, macros.
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# define NAMEOF_RAW(name) ::nameof::detail::NameofRaw(#name, ((sizeof(#name) / sizeof(char)) - 1) + (0 * sizeof(void (*)(__typeof__(name)))))
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#elif defined(_MSC_VER)
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# define NAMEOF_RAW(name) ::nameof::NameofRaw(#name, ((sizeof(#name) / sizeof(char)) - 1) + (0 * sizeof(typeid(name))))
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#elif defined(__clang__) || defined(__GNUC__)
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// Used to obtain the raw string name of a variable, type, member, function, macros.
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# define NAMEOF_RAW(name) ::nameof::detail::NameofRaw(#name, ((sizeof(#name) / sizeof(char)) - 1) + (0 * sizeof(typeid(name))))
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# define NAMEOF_RAW(name) ::nameof::NameofRaw(#name, ((sizeof(#name) / sizeof(char)) - 1) + (0 * sizeof(void(*)(__typeof__(name)))))
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#endif
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// Used to obtain the simple (unqualified) string name of a variable, member, function.
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@ -256,7 +383,13 @@ inline NAMEOF_CONSTEXPR detail::cstring NameofType() noexcept {
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#define NAMEOF_FULL(name) ::nameof::Nameof<decltype(name)>(name, #name, (sizeof(#name) / sizeof(char)) - 1, true)
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// Used to obtain the simple (unqualified) string name of a type.
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#define NAMEOF_TYPE(name) ::nameof::NameofType<decltype(name)>()
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#define NAMEOF_TYPE(var) ::nameof::NameofType<decltype(var)>(false)
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#define NAMEOF_TYPE_T(type) ::nameof::NameofType<type>(false)
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// Used to obtain the full string name of a type.
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#define NAMEOF_TYPE_FULL(var) ::nameof::NameofType<decltype(var)>(true)
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#define NAMEOF_TYPE_FULL_T(type) ::nameof::NameofType<type>(true)
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// Used to obtain the raw string name of a type.
|
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#define NAMEOF_TYPE_RAW(name) ::nameof::NameofTypeRaw<decltype(name)>()
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#define NAMEOF_TYPE_RAW(var) ::nameof::NameofTypeRaw<::nameof::detail::nstd::identity<decltype(var)>>(false)
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#define NAMEOF_TYPE_RAW_T(type) ::nameof::NameofTypeRaw<::nameof::detail::nstd::identity<type>>(false)
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Reference in a new issue