import Object
import t, c


# --- Unicode Type -------------------------------------------------------
# ASCII-only strings created through PyUnicode_New use the PyASCIIObject
# structure. state.ascii and state.compact are set, and the data
# immediately follow the structure. utf8_length can be found
# in the length field; the utf8 pointer is equal to the data pointer. */
class PyASCIIObject:
    ob_base: Object.PyObject
    length:  Object.Py_ssize_t # Number of code points in the string
    hash:    Object.Py_hash_t  # Hash value; -1 if not set
    class state:
        interned: t.CUnsignedInt | t.Bit[2]
        kind:     t.CUnsignedInt | t.Bit[3]
        compact:  t.CUnsignedInt | t.Bit[1]
        ascii:    t.CUnsignedInt | t.Bit[1]
        _:        t.CUnsignedInt | t.Bit[25]

class PyCompactUnicodeObject:
    _base: PyASCIIObject
    utf8_length: Object.Py_ssize_t # Number of bytes in utf8, excluding the * terminating \0.
    utf8: str                      # UTF-8 representation (null-terminated)

Py_UCS4: t.CTypedef = t.CUInt32T
Py_UCS2: t.CTypedef = t.CUInt16T
Py_UCS1: t.CTypedef = t.CUInt8T

# Object format for Unicode subclasses.
class PyUnicodeObject:
    _base: PyCompactUnicodeObject
    class data(t.CUnion):
        any: t.CVoid | t.CPtr
        latin1: Py_UCS1 | t.CPtr
        ucs2:   Py_UCS2 | t.CPtr
        ucs4:   Py_UCS4 | t.CPtr
    # Canonical, smallest-form Unicode buffer