272 lines
12 KiB
Python
272 lines
12 KiB
Python
import t, c
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import memhub
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import string
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import json
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from stdint import *
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# Variant 类型标签 (与 _variant.py 保持一致)
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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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# Variant 结构体大小: vtype(i32, 4 bytes) + padding(4 bytes) + ptr(i8*, 8 bytes) = 16 bytes
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_VARIANT_SIZE: t.CDefine = 16
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class dict:
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"""堆上动态字典容器，基于 mbuddy 分配器。
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键类型固定为 str (i8*)，值使用 Variant 存储 (类型标签 + 无类型指针)。
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支持嵌套 dict/list 和 JSON 序列化。
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用法:
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mb: memhub.MemBuddy = memhub.MemBuddy(arena, arena_size)
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d: dict = dict(mb)
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d.set_int("x", 42)
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p: t.CPtr = d["x"]
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v: int = c.Deref(p)
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# 嵌套 dict
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inner: dict = dict(mb)
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inner.set_int("a", 1)
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d.set_dict("sub", inner)
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sub: dict = c.Deref(d["sub"])
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av: int = c.Deref(sub["a"])
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"""
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__keys__: t.CPtr
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__values__: t.CPtr
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__count__: t.CSizeT = 0
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__capacity__: t.CSizeT = 8
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__mbuddy__: memhub.MemBuddy | t.CPtr
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__iter_index__: t.CSizeT = 0
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def __new__(self, mb: memhub.MemBuddy | t.CPtr) -> t.CPtr:
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# 堆分配 dict 对象
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return mb.alloc(dict.__sizeof__())
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def __init__(self, mb: memhub.MemBuddy | t.CPtr):
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self.__mbuddy__ = mb
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self.__keys__ = mb.alloc(self.__capacity__ * 8)
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self.__values__ = mb.alloc(self.__capacity__ * _VARIANT_SIZE)
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def __len__(self) -> t.CSizeT:
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return self.__count__
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def _find(self, key: str) -> t.CSizeT:
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"""查找 key 的索引，找不到返回 __count__"""
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for i in range(self.__count__):
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key_ptr: str | t.CPtr = t.CPtr(t.CUInt64T(self.__keys__) + i * 8)
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if key_ptr[0] == key: return i
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return self.__count__
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def __getitem__(self, key: str) -> t.CPtr:
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"""返回值的无类型指针。用户用 c.Deref 解引用获取实际值。
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例: p: t.CPtr = d["x"]; v: int = c.Deref(p)"""
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idx: t.CSizeT = self._find(key)
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if idx >= self.__count__: return None
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# Variant.ptr 在 Variant 结构体偏移 8 处
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val_ptr: str | t.CPtr = t.CPtr(t.CUInt64T(self.__values__) + idx * _VARIANT_SIZE + 8)
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return val_ptr[0]
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def __setitem__(self, key: str, val: t.CNeedPtr):
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"""存储值为 VARIANT_PTR。val 自动取地址 (t.CNeedPtr)。
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注意: val 指向的值生命周期由调用者管理。
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如需持久存储，请使用 set_int / set_str 等类型化方法。"""
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self._set_variant_raw(key, VARIANT_PTR, val)
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def _set_variant_raw(self, key: str, vtype: t.CInt, ptr: t.CPtr):
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"""内部方法: 存储 Variant (vtype + ptr)。不自动取地址。"""
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idx: t.CSizeT = self._find(key)
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if idx < self.__count__:
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# 更新已有键
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vtype_ptr: t.CInt | t.CPtr = t.CPtr(t.CUInt64T(self.__values__) + idx * _VARIANT_SIZE)
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vtype_ptr[0] = vtype
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val_ptr: str | t.CPtr = t.CPtr(t.CUInt64T(self.__values__) + idx * _VARIANT_SIZE + 8)
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val_ptr[0] = ptr
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return
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if self.__count__ >= self.__capacity__:
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new_cap: t.CSizeT = self.__capacity__ * 2
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new_keys: t.CPtr = self.__mbuddy__.alloc(new_cap * 8)
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new_values: t.CPtr = self.__mbuddy__.alloc(new_cap * _VARIANT_SIZE)
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if new_keys is None or new_values is None: return
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string.memcpy(new_keys, self.__keys__, self.__count__ * 8)
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string.memcpy(new_values, self.__values__, self.__count__ * _VARIANT_SIZE)
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self.__keys__ = new_keys
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self.__values__ = new_values
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self.__capacity__ = new_cap
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key_ptr: str | t.CPtr = t.CPtr(t.CUInt64T(self.__keys__) + self.__count__ * 8)
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key_ptr[0] = key
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vtype_ptr: t.CInt | t.CPtr = t.CPtr(t.CUInt64T(self.__values__) + self.__count__ * _VARIANT_SIZE)
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vtype_ptr[0] = vtype
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val_ptr: str | t.CPtr = t.CPtr(t.CUInt64T(self.__values__) + self.__count__ * _VARIANT_SIZE + 8)
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val_ptr[0] = ptr
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self.__count__ += 1
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# ============================================================
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# 类型化 setter — 在 __mbuddy__ 中分配持久存储
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# ============================================================
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def set_int(self, key: str, val: int):
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"""存储 int 值 (VARIANT_INT)。值复制到 __mbuddy__ 持久存储。"""
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storage: t.CPtr = self.__mbuddy__.alloc(8)
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int_ptr: int | t.CPtr = t.CVoid(t.CUInt64T(storage), t.CPtr)
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int_ptr[0] = val
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self._set_variant_raw(key, VARIANT_INT, storage)
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def set_str(self, key: str, val: str):
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"""存储 str 值 (VARIANT_STR)。直接存储字符串指针。"""
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self._set_variant_raw(key, VARIANT_STR, val)
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def set_float(self, key: str, val: float):
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"""存储 float 值 (VARIANT_FLOAT)。值复制到 __mbuddy__ 持久存储。"""
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storage: t.CPtr = self.__mbuddy__.alloc(8)
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float_ptr: float | t.CPtr = t.CVoid(t.CUInt64T(storage), t.CPtr)
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float_ptr[0] = val
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self._set_variant_raw(key, VARIANT_FLOAT, storage)
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def set_double(self, key: str, val: t.CDouble):
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"""存储 double 值 (VARIANT_DOUBLE)。值复制到 __mbuddy__ 持久存储。"""
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storage: t.CPtr = self.__mbuddy__.alloc(8)
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dbl_ptr: t.CDouble | t.CPtr = t.CVoid(t.CUInt64T(storage), t.CPtr)
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dbl_ptr[0] = val
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self._set_variant_raw(key, VARIANT_DOUBLE, storage)
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def set_dict(self, key: str, val: dict | t.CPtr):
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"""存储嵌套 dict 指针 (VARIANT_DICT)。"""
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self._set_variant_raw(key, VARIANT_DICT, val)
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def set_list(self, key: str, val: t.CPtr):
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"""存储嵌套 list 指针 (VARIANT_LIST)。"""
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self._set_variant_raw(key, VARIANT_LIST, val)
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def set_bool(self, key: str, val: t.CInt):
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"""存储 bool 值 (VARIANT_BOOL)。值复制到 __mbuddy__ 持久存储。"""
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storage: t.CPtr = self.__mbuddy__.alloc(8)
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bool_ptr: t.CInt | t.CPtr = t.CVoid(t.CUInt64T(storage), t.CPtr)
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bool_ptr[0] = val
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self._set_variant_raw(key, VARIANT_BOOL, storage)
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# ============================================================
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# 查询方法
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# ============================================================
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def get_vtype(self, key: str) -> t.CInt:
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"""返回 key 对应值的 Variant 类型标签。"""
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idx: t.CSizeT = self._find(key)
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if idx >= self.__count__:
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return VARIANT_NONE
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vtype_ptr: t.CInt | t.CPtr = t.CVoid(t.CUInt64T(self.__values__) + idx * _VARIANT_SIZE, t.CPtr)
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return vtype_ptr[0]
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def get(self, key: str, default: t.CPtr) -> t.CPtr:
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"""返回值指针，不存在则返回 default。"""
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idx: t.CSizeT = self._find(key)
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if idx >= self.__count__:
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return default
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val_ptr: str | t.CPtr = t.CVoid(t.CUInt64T(self.__values__) + idx * _VARIANT_SIZE + 8, t.CPtr)
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return val_ptr[0]
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def contains(self, key: str) -> t.CInt:
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"""检查 key 是否存在。"""
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idx: t.CSizeT = self._find(key)
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if idx < self.__count__:
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return 1
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return 0
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def __iter__(self) -> dict | t.CPtr:
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self.__iter_index__ = 0
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return self
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def __next__(self) -> str:
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if self.__iter_index__ >= self.__count__:
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raise StopIteration
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idx: t.CSizeT = self.__iter_index__
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self.__iter_index__ = idx + 1
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key_ptr: str | t.CPtr = t.CVoid(t.CUInt64T(self.__keys__) + idx * 8, t.CPtr)
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return key_ptr[0]
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# ============================================================
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# JSON 处理：利用 includes/json 库实现序列化/反序列化
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# ============================================================
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def to_json(self, pool: memhub.MemManager | t.CPtr) -> json.JsonValue | t.CPtr:
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"""将 dict 转换为 JsonValue 对象 (JSON_OBJECT)。
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根据 Variant 类型标签自动选择合适的 JSON 值类型。"""
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obj: json.JsonValue | t.CPtr = json.object(pool)
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i: t.CSizeT = 0
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while i < self.__count__:
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key_ptr: str | t.CPtr = t.CVoid(t.CUInt64T(self.__keys__) + i * 8, t.CPtr)
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vtype_ptr: t.CInt | t.CPtr = t.CVoid(t.CUInt64T(self.__values__) + i * _VARIANT_SIZE, t.CPtr)
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val_ptr: str | t.CPtr = t.CVoid(t.CUInt64T(self.__values__) + i * _VARIANT_SIZE + 8, t.CPtr)
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vt: t.CInt = vtype_ptr[0]
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vp: t.CPtr = val_ptr[0]
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jv: json.JsonValue | t.CPtr = json.null(pool)
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if jv != None:
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if vt == VARIANT_INT:
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jv.vtype = 2 # JSON_INT
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ip: int | t.CPtr = t.CVoid(t.CUInt64T(vp), t.CPtr)
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jv.int_val = ip[0]
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elif vt == VARIANT_STR:
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jv.vtype = 4 # JSON_STRING
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jv.str_val = vp
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elif vt == VARIANT_BOOL:
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jv.vtype = 1 # JSON_BOOL
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bp: t.CInt | t.CPtr = t.CVoid(t.CUInt64T(vp), t.CPtr)
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jv.bool_val = bp[0]
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elif vt == VARIANT_FLOAT:
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jv.vtype = 3 # JSON_FLOAT
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fp: float | t.CPtr = t.CVoid(t.CUInt64T(vp), t.CPtr)
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jv.float_val = fp[0]
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elif vt == VARIANT_PTR:
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# 默认: 将 PTR 作为整数处理
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jv.vtype = 2 # JSON_INT
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ip: int | t.CPtr = t.CVoid(t.CUInt64T(vp), t.CPtr)
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jv.int_val = ip[0]
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json.object_set(pool, obj, key_ptr[0], jv)
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i += 1
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return obj
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def from_json(self, pool: memhub.MemManager | t.CPtr, root: json.JsonValue | t.CPtr):
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"""从 JsonValue 对象填充 dict。
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根据 JSON 值类型自动提取并存储为对应 Variant 类型。"""
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if root == None:
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return
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if root.vtype != 6: # JSON_OBJECT
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return
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cur: json.JsonValue | t.CPtr = root.child
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while cur != None:
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if cur.key != None:
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if cur.vtype == 2: # JSON_INT
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storage: t.CPtr = self.__mbuddy__.alloc(8)
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ip: int | t.CPtr = t.CVoid(t.CUInt64T(storage), t.CPtr)
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ip[0] = cur.int_val
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self._set_variant_raw(cur.key, VARIANT_INT, storage)
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elif cur.vtype == 4: # JSON_STRING
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self._set_variant_raw(cur.key, VARIANT_STR, cur.str_val)
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elif cur.vtype == 1: # JSON_BOOL
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storage: t.CPtr = self.__mbuddy__.alloc(8)
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bp: t.CInt | t.CPtr = t.CVoid(t.CUInt64T(storage), t.CPtr)
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bp[0] = cur.bool_val
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self._set_variant_raw(cur.key, VARIANT_BOOL, storage)
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elif cur.vtype == 3: # JSON_FLOAT
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storage: t.CPtr = self.__mbuddy__.alloc(8)
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fp: float | t.CPtr = t.CVoid(t.CUInt64T(storage), t.CPtr)
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fp[0] = cur.float_val
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self._set_variant_raw(cur.key, VARIANT_FLOAT, storage)
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cur = cur.next
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def dumps(self, pool: memhub.MemManager | t.CPtr) -> str:
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"""将 dict 序列化为 JSON 字符串。"""
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obj: json.JsonValue | t.CPtr = self.to_json(pool)
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return json.write(pool, obj, False)
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def loads(self, pool: memhub.MemManager | t.CPtr, json_str: str):
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"""从 JSON 字符串解析并填充 dict。"""
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root: json.JsonValue | t.CPtr = json.parse(pool, json_str)
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self.from_json(pool, root)
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