122 lines
3.8 KiB
Plaintext
122 lines
3.8 KiB
Plaintext
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#pragma GCC system_header
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#ifndef _LIBCXX_IOS
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#define _LIBCXX_IOS
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#include <__config>
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#include <iosfwd>
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_LIBCXX_BEGIN_NAMESPACE_STD
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typedef size_t streamsize;
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class ios_base {
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public:
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typedef uint32_t openmode;
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static constexpr openmode app = 0x1;
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static constexpr openmode binary = 0x2;
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static constexpr openmode in = 0x4;
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static constexpr openmode out = 0x8;
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static constexpr openmode trunc = 0x10;
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static constexpr openmode ate = 0x20;
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typedef uint32_t fmtflags;
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static constexpr fmtflags dec = 0x1;
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static constexpr fmtflags oct = 0x2;
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static constexpr fmtflags hex = 0x4;
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static constexpr fmtflags basefield = dec | oct | hex;
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static constexpr fmtflags left = 0x8;
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static constexpr fmtflags right = 0x10;
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static constexpr fmtflags internal = 0x20;
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static constexpr fmtflags adjustfield = left | right | internal;
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static constexpr fmtflags scientific = 0x40;
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static constexpr fmtflags fixed = 0x80;
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static constexpr fmtflags floatfield = scientific | fixed;
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static constexpr fmtflags boolalpha = 0x100;
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static constexpr fmtflags showbase = 0x200;
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static constexpr fmtflags showpoint = 0x400;
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static constexpr fmtflags showpos = 0x800;
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static constexpr fmtflags skipws = 0x1000;
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static constexpr fmtflags unitbuf = 0x2000;
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static constexpr fmtflags uppercase = 0x4000;
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typedef uint32_t iostate;
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static constexpr iostate goodbit = 0x0;
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static constexpr iostate badbit = 0x1;
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static constexpr iostate failbit = 0x2;
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static constexpr iostate eofbit = 0x4;
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typedef uint32_t seekdir;
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static constexpr seekdir beg = 0x1;
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static constexpr seekdir end = 0x2;
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static constexpr seekdir cur = 0x4;
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ios_base() = default;
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virtual ~ios_base() = default;
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fmtflags flags() const { return m_fl; }
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fmtflags flags(fmtflags flags) { return m_fl = flags; }
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fmtflags setf(fmtflags flags) { return m_fl |= flags; }
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fmtflags setf(fmtflags flags, fmtflags mask) { return m_fl = (m_fl & ~mask) | (flags & mask); }
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void unsetf(fmtflags flags) { m_fl = (m_fl & ~flags); }
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streamsize precision() const { return m_precision; }
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streamsize precision(streamsize n_p) { return m_precision = n_p; }
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streamsize width() const { return m_width; }
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streamsize width(streamsize n_w) { return m_width = n_w; }
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bool good() const { return rdstate() == goodbit; }
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bool eof() const { return (m_rdstate & eofbit) != 0; }
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bool fail() const { return (m_rdstate & failbit) != 0; }
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bool bad() const { return (m_rdstate & badbit) != 0; }
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bool operator!() const { return fail(); }
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explicit operator bool() const { return !fail(); }
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iostate rdstate() const { return m_rdstate; }
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void setstate(iostate state) { m_rdstate = state; }
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void clear(iostate state = goodbit) { m_rdstate = state; }
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// TODO: Support locales
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private:
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fmtflags m_fl { 0 };
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iostate m_rdstate { 0 };
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iostate m_state { 0 };
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streamsize m_precision { 0 };
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streamsize m_width { 0 };
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};
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template <class CharT, class Traits>
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class basic_ios : public ios_base {
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public:
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using char_type = CharT;
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using traits_type = Traits;
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using int_type = typename traits_type::int_type;
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using pos_type = typename traits_type::pos_type;
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using off_type = typename traits_type::off_type;
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explicit basic_ios(basic_streambuf<char_type, traits_type>* rdbuf)
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: ios_base()
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, m_rdbuf(rdbuf)
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{
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}
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virtual ~basic_ios() = default;
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basic_streambuf<CharT, Traits>* rdbuf() const { return m_rdbuf; }
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basic_streambuf<CharT, Traits>* rdbuf(basic_streambuf<CharT, Traits>* sb) { return m_rdbuf = sb; }
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// TODO: Add more API to match C++20 standard.
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protected:
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basic_ios() = default;
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private:
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basic_streambuf<char_type, traits_type>* m_rdbuf { nullptr };
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};
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_LIBCXX_END_NAMESPACE_STD
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#endif // _LIBCXX_IOS
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