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　晋太元中，武陵人捕鱼为业。缘溪行，忘路之远近。忽逢桃花林，夹岸数百步，中无杂树，芳草鲜美，落英缤纷。渔人甚异之，复前行，欲穷其林。　　林尽水源，便得一山，山有小口，仿佛若有光。便舍船，从口入。初极狭，才通人。复行数十步，豁然开朗。土地平旷，屋舍俨然，有良田、美池、桑竹之属。阡陌交通，鸡犬相闻。其中往来种作，男女衣着，悉如外人。黄发垂髫，并怡然自乐。　　见渔人，乃大惊，问所从来。具答之。便要还家，设酒杀鸡作食。村中闻有此人，咸来问讯。自云先世避秦时乱，率妻子邑人来此绝境，不复出焉，遂与外人间隔。问今是何世，乃不知有汉，无论魏晋。此人一一为具言所闻，皆叹惋。余人各复延至其家，皆出酒食。停数日，辞去。此中人语云：“不足为外人道也。”(间隔一作：隔绝) 　　既出，得其船，便扶向路，处处志之。及郡下，诣太守，说如此。太守即遣人随其往，寻向所志，遂迷，不复得路。　　南阳刘子骥，高尚士也，闻之，欣然规往。未果，寻病终。后遂无问津者。 . Prv8 Shell

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Current File : //lib64/python3.6/site-packages/cffi/commontypes.py

import sys
from . import model
from .error import FFIError


COMMON_TYPES = {}

try:
    # fetch "bool" and all simple Windows types
    from _cffi_backend import _get_common_types
    _get_common_types(COMMON_TYPES)
except ImportError:
    pass

COMMON_TYPES['FILE'] = model.unknown_type('FILE', '_IO_FILE')
COMMON_TYPES['bool'] = '_Bool'    # in case we got ImportError above

for _type in model.PrimitiveType.ALL_PRIMITIVE_TYPES:
    if _type.endswith('_t'):
        COMMON_TYPES[_type] = _type
del _type

_CACHE = {}

def resolve_common_type(parser, commontype):
    try:
        return _CACHE[commontype]
    except KeyError:
        cdecl = COMMON_TYPES.get(commontype, commontype)
        if not isinstance(cdecl, str):
            result, quals = cdecl, 0    # cdecl is already a BaseType
        elif cdecl in model.PrimitiveType.ALL_PRIMITIVE_TYPES:
            result, quals = model.PrimitiveType(cdecl), 0
        elif cdecl == 'set-unicode-needed':
            raise FFIError("The Windows type %r is only available after "
                           "you call ffi.set_unicode()" % (commontype,))
        else:
            if commontype == cdecl:
                raise FFIError(
                    "Unsupported type: %r.  Please look at "
        "http://cffi.readthedocs.io/en/latest/cdef.html#ffi-cdef-limitations "
                    "and file an issue if you think this type should really "
                    "be supported." % (commontype,))
            result, quals = parser.parse_type_and_quals(cdecl)   # recursive

        assert isinstance(result, model.BaseTypeByIdentity)
        _CACHE[commontype] = result, quals
        return result, quals


# ____________________________________________________________
# extra types for Windows (most of them are in commontypes.c)


def win_common_types():
    return {
        "UNICODE_STRING": model.StructType(
            "_UNICODE_STRING",
            ["Length",
             "MaximumLength",
             "Buffer"],
            [model.PrimitiveType("unsigned short"),
             model.PrimitiveType("unsigned short"),
             model.PointerType(model.PrimitiveType("wchar_t"))],
            [-1, -1, -1]),
        "PUNICODE_STRING": "UNICODE_STRING *",
        "PCUNICODE_STRING": "const UNICODE_STRING *",

        "TBYTE": "set-unicode-needed",
        "TCHAR": "set-unicode-needed",
        "LPCTSTR": "set-unicode-needed",
        "PCTSTR": "set-unicode-needed",
        "LPTSTR": "set-unicode-needed",
        "PTSTR": "set-unicode-needed",
        "PTBYTE": "set-unicode-needed",
        "PTCHAR": "set-unicode-needed",
        }

if sys.platform == 'win32':
    COMMON_TYPES.update(win_common_types())

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