65 lines
1.9 KiB
Python
65 lines
1.9 KiB
Python
import t, c
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from stdint import *
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# Variant 类型标签 (固定枚举 + 自定义 PTR)
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VARIANT_NONE: t.CDefine = 0 # 无类型/空值
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VARIANT_INT: t.CDefine = 1 # int (i64)
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VARIANT_FLOAT: t.CDefine = 2 # float (f32)
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VARIANT_DOUBLE: t.CDefine = 3 # double (f64)
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VARIANT_STR: t.CDefine = 4 # str (i8*)
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VARIANT_DICT: t.CDefine = 5 # dict*
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VARIANT_LIST: t.CDefine = 6 # list*
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VARIANT_BOOL: t.CDefine = 7 # bool (i1/i32)
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VARIANT_PTR: t.CDefine = 8 # 自定义指针类型
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class Variant:
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"""通用变体类型，存储类型标签 + 无类型指针。
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用于 dict/list 的万能对象存储，支持嵌套和 JSON 序列化。
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用法:
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v: Variant = Variant(VARIANT_INT, t.CNeedPtr(42))
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v2: Variant = Variant(VARIANT_STR, t.CNeedPtr("hello"))
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# 获取值
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ptr: t.CPtr = v.ptr
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i: int = c.Deref(ptr)
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"""
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vtype: t.CInt
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ptr: t.CPtr
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def __init__(self, vtype: t.CInt, val: t.CNeedPtr):
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"""构造 Variant。
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val 使用 t.CNeedPtr 自动取地址（非指针值自动 alloca+store）。
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注意: val 的生命周期由调用者管理，Variant 仅存储指针。
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"""
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self.vtype = vtype
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self.ptr = val
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def is_none(self) -> t.CInt:
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return self.vtype == VARIANT_NONE
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def is_int(self) -> t.CInt:
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return self.vtype == VARIANT_INT
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def is_float(self) -> t.CInt:
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return self.vtype == VARIANT_FLOAT
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def is_double(self) -> t.CInt:
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return self.vtype == VARIANT_DOUBLE
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def is_str(self) -> t.CInt:
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return self.vtype == VARIANT_STR
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def is_dict(self) -> t.CInt:
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return self.vtype == VARIANT_DICT
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def is_list(self) -> t.CInt:
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return self.vtype == VARIANT_LIST
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def is_bool(self) -> t.CInt:
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return self.vtype == VARIANT_BOOL
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def is_ptr(self) -> t.CInt:
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return self.vtype == VARIANT_PTR
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