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ZERICO2005ZERICO2005
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implemented std::char_traits
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‎src/libcxx/include/__char_traits‎

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// -*- C++ -*-
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#ifndef _EZCXX_CHAR_TRAITS
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#define _EZCXX_CHAR_TRAITS
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#include <cstddef>
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#include <cstdint>
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#include <cstring>
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#include <cstdio>
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#include <cwchar>
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#pragma clang system_header
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namespace std {
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using streamoff = ptrdiff_t;
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using streamsize = ptrdiff_t;
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} // namespace std
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namespace std {
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template<class CharT> struct char_traits;
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template<> struct char_traits<char>;
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template<> struct char_traits<char8_t>;
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template<> struct char_traits<char16_t>;
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template<> struct char_traits<char32_t>;
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template<> struct char_traits<wchar_t>;
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template<> struct char_traits<char> {
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using char_type = char;
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using int_type = int;
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using off_type = streamoff;
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static constexpr void assign(char_type& __c1, const char_type& __c2) noexcept {
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__c1 = __c2;
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}
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static constexpr bool eq(char_type __c1, char_type __c2) noexcept {
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return (__c1 == __c2);
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}
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static constexpr bool lt(char_type __c1, char_type __c2) noexcept {
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return (__c1 < __c2);
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}
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static constexpr size_t length(const char_type* __s) {
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return __builtin_strlen(__s);
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}
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static constexpr int compare(const char_type* __s1, const char_type* __s2, size_t __n) {
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return __builtin_memcmp(__s1, __s2, __n);
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}
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static constexpr const char_type* find(const char_type* __s, size_t __n, const char_type& __a) {
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return static_cast<const char_type*>(__builtin_memchr(__s, __a, __n));
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}
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static constexpr char_type* move(char_type* __s1, const char_type* __s2, size_t __n) {
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return static_cast<char_type*>(__builtin_memmove(__s1, __s2, __n));
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}
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static constexpr char_type* copy(char_type* __s1, const char_type* __s2, size_t __n) {
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return static_cast<char_type*>(__builtin_memcpy(__s1, __s2, __n));
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}
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static constexpr char_type* assign(char_type* __s, size_t __n, char_type __a) {
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return static_cast<char_type*>(__builtin_memset(__s, __a, __n));
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}
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static constexpr char_type to_char_type(int_type __c) noexcept {
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return static_cast<char_type>(__c);
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}
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static constexpr int_type to_int_type(char_type __c) noexcept {
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return static_cast<int_type>(__c);
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}
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static constexpr bool eq_int_type(int_type __c1, int_type __c2) noexcept {
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return (__c1 == __c2);
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}
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static constexpr int_type eof() noexcept {
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return EOF;
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}
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static constexpr int_type not_eof(int_type __c) noexcept {
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return (__c != eof()) ? __c : '\0';
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}
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};
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template<> struct char_traits<char8_t> {
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using char_type = char8_t;
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using int_type = unsigned int;
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using off_type = streamoff;
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static constexpr void assign(char_type& __c1, const char_type& __c2) noexcept {
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__c1 = __c2;
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}
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static constexpr bool eq(char_type __c1, char_type __c2) noexcept {
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return (__c1 == __c2);
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}
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static constexpr bool lt(char_type __c1, char_type __c2) noexcept {
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return (__c1 < __c2);
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}
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static constexpr size_t length(const char_type* __s);
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static constexpr int compare(const char_type* __s1, const char_type* __s2, size_t __n);
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static constexpr const char_type* find(const char_type* __s, size_t __n, const char_type& __a);
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static constexpr char_type* move(char_type* __s1, const char_type* __s2, size_t __n);
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static constexpr char_type* copy(char_type* __s1, const char_type* __s2, size_t __n);
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static constexpr char_type* assign(char_type* __s, size_t __n, char_type __a);
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static constexpr char_type to_char_type(int_type __c) noexcept;
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static constexpr int_type to_int_type(char_type __c) noexcept;
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static constexpr bool eq_int_type(int_type __c1, int_type __c2) noexcept;
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static constexpr int_type eof() noexcept;
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static constexpr int_type not_eof(int_type __c) noexcept;
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};
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template<> struct char_traits<char16_t> {
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using char_type = char16_t;
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using int_type = uint_least16_t;
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using off_type = streamoff;
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static constexpr void assign(char_type& __c1, const char_type& __c2) noexcept {
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__c1 = __c2;
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}
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static constexpr bool eq(char_type __c1, char_type __c2) noexcept {
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return (__c1 == __c2);
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}
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static constexpr bool lt(char_type __c1, char_type __c2) noexcept {
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return (__c1 < __c2);
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}
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static constexpr size_t length(const char_type* __s);
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static constexpr int compare(const char_type* __s1, const char_type* __s2, size_t __n);
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static constexpr const char_type* find(const char_type* __s, size_t __n, const char_type& __a);
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static constexpr char_type* move(char_type* __s1, const char_type* __s2, size_t __n);
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static constexpr char_type* copy(char_type* __s1, const char_type* __s2, size_t __n);
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static constexpr char_type* assign(char_type* __s, size_t __n, char_type __a);
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static constexpr char_type to_char_type(int_type __c) noexcept;
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static constexpr int_type to_int_type(char_type __c) noexcept;
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static constexpr bool eq_int_type(int_type __c1, int_type __c2) noexcept;
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static constexpr int_type eof() noexcept;
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static constexpr int_type not_eof(int_type __c) noexcept;
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};
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template<> struct char_traits<char32_t> {
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using char_type = char32_t;
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using int_type = uint_least32_t;
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using off_type = streamoff;
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static constexpr void assign(char_type& __c1, const char_type& __c2) noexcept {
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__c1 = __c2;
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}
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static constexpr bool eq(char_type __c1, char_type __c2) noexcept {
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return (__c1 == __c2);
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}
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static constexpr bool lt(char_type __c1, char_type __c2) noexcept {
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return (__c1 < __c2);
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}
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static constexpr size_t length(const char_type* __s);
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static constexpr int compare(const char_type* __s1, const char_type* __s2, size_t __n);
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static constexpr const char_type* find(const char_type* __s, size_t __n, const char_type& __a);
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static constexpr char_type* move(char_type* __s1, const char_type* __s2, size_t __n);
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static constexpr char_type* copy(char_type* __s1, const char_type* __s2, size_t __n);
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static constexpr char_type* assign(char_type* __s, size_t __n, char_type __a);
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static constexpr char_type to_char_type(int_type __c) noexcept;
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static constexpr int_type to_int_type(char_type __c) noexcept;
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static constexpr bool eq_int_type(int_type __c1, int_type __c2) noexcept;
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static constexpr int_type eof() noexcept;
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static constexpr int_type not_eof(int_type __c) noexcept;
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};
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template<> struct char_traits<wchar_t> {
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using char_type = wchar_t;
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using int_type = wint_t;
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using off_type = streamoff;
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static constexpr void assign(char_type& __c1, const char_type& __c2) noexcept {
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__c1 = __c2;
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}
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static constexpr bool eq(char_type __c1, char_type __c2) noexcept {
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return (__c1 == __c2);
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}
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static constexpr bool lt(char_type __c1, char_type __c2) noexcept {
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return (__c1 < __c2);
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}
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static constexpr size_t length(const char_type* __s) {
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return __builtin_wcslen(__s);
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}
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static constexpr int compare(const char_type* __s1, const char_type* __s2, size_t __n) {
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return __builtin_wmemcmp(__s1, __s2, __n);
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}
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static constexpr const char_type* find(const char_type* __s, size_t __n, const char_type& __a) {
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return static_cast<const char_type*>(__builtin_wmemchr(__s, __a, __n));
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}
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static constexpr char_type* move(char_type* __s1, const char_type* __s2, size_t __n) {
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return static_cast<char_type*>(__builtin_wmemmove(__s1, __s2, __n));
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}
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static constexpr char_type* copy(char_type* __s1, const char_type* __s2, size_t __n) {
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return static_cast<char_type*>(__builtin_wmemcpy(__s1, __s2, __n));
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}
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static constexpr char_type* assign(char_type* __s, size_t __n, char_type __a) {
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return static_cast<char_type*>(std::wmemset(__s, __a, __n));
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}
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static constexpr char_type to_char_type(int_type __c) noexcept {
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return static_cast<char_type>(__c);
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}
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static constexpr int_type to_int_type(char_type __c) noexcept {
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return static_cast<int_type>(__c);
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}
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static constexpr bool eq_int_type(int_type __c1, int_type __c2) noexcept {
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return (__c1 == __c2);
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}
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static constexpr int_type eof() noexcept {
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return WEOF;
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}
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static constexpr int_type not_eof(int_type __c) noexcept {
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return (__c != eof()) ? __c : L'\0';
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}
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};
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} // namespace std
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#endif // _EZCXX_CHAR_TRAITS

‎src/libcxx/include/string‎

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#include <cstdio>
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#include <cstdlib>
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#include <EASTL/string.h>
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#include <__char_traits>
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#pragma clang system_header
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namespace std {
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template<
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typename CharT,
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typename Traits = std::char_traits<CharT>,
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typename Allocator = eastl::allocator
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>
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using basic_string = eastl::basic_string<CharT, Allocator>;
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inline string to_string(int value) {
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char buf[sizeof("-8388608")];
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boot_sprintf(buf, "%d", value);

‎src/libcxx/include/string_view‎

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#include <__eastl_config>
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#include <EASTL/string_view.h>
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#include <__char_traits>
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#pragma clang system_header
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namespace std {
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template<
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typename CharT,
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typename Traits = std::char_traits<CharT>
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>
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using basic_string_view = eastl::basic_string_view<CharT>;
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} // namespace std
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#endif // _EZCXX_STRING_VIEW

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