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snapshot before regression test

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2026-07-18 19:25:40 +08:00
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import t, c
import memhub
import string
import json
from stdint import *
# Variant 类型标签 (与 _variant.py 保持一致)
VARIANT_NONE: t.CDefine = 0 # 无类型/空值
VARIANT_INT: t.CDefine = 1 # int (i64)
VARIANT_FLOAT: t.CDefine = 2 # float (f32)
VARIANT_DOUBLE: t.CDefine = 3 # double (f64)
VARIANT_STR: t.CDefine = 4 # str (i8*)
VARIANT_DICT: t.CDefine = 5 # dict*
VARIANT_LIST: t.CDefine = 6 # list*
VARIANT_BOOL: t.CDefine = 7 # bool (i1/i32)
VARIANT_PTR: t.CDefine = 8 # 自定义指针类型
# Variant 结构体大小: vtype(i32, 4 bytes) + padding(4 bytes) + ptr(i8*, 8 bytes) = 16 bytes
_VARIANT_SIZE: t.CDefine = 16
class dict:
"""堆上动态字典容器，基于 mbuddy 分配器。
键类型固定为 str (i8*)，值使用 Variant 存储 (类型标签 + 无类型指针)。
支持嵌套 dict/list 和 JSON 序列化。
用法:
mb: memhub.MemBuddy = memhub.MemBuddy(arena, arena_size)
d: dict = dict(mb)
d.set_int("x", 42)
p: t.CPtr = d["x"]
v: int = c.Deref(p)
# 嵌套 dict
inner: dict = dict(mb)
inner.set_int("a", 1)
d.set_dict("sub", inner)
sub: dict = c.Deref(d["sub"])
av: int = c.Deref(sub["a"])
"""
__keys__: t.CPtr
__values__: t.CPtr
__count__: t.CSizeT = 0
__capacity__: t.CSizeT = 8
__mbuddy__: memhub.MemBuddy | t.CPtr
__iter_index__: t.CSizeT = 0
def __new__(self, mb: memhub.MemBuddy | t.CPtr) -> t.CPtr:
# 堆分配 dict 对象
return mb.alloc(dict.__sizeof__())
def __init__(self, mb: memhub.MemBuddy | t.CPtr):
self.__mbuddy__ = mb
self.__keys__ = mb.alloc(self.__capacity__ * 8)
self.__values__ = mb.alloc(self.__capacity__ * _VARIANT_SIZE)
def __len__(self) -> t.CSizeT:
return self.__count__
def _find(self, key: str) -> t.CSizeT:
"""查找 key 的索引，找不到返回 __count__"""
for i in range(self.__count__):
key_ptr: str | t.CPtr = t.CPtr(t.CUInt64T(self.__keys__) + i * 8)
if key_ptr[0] == key: return i
return self.__count__
def __getitem__(self, key: str) -> t.CPtr:
"""返回值的无类型指针。用户用 c.Deref 解引用获取实际值。
例: p: t.CPtr = d["x"]; v: int = c.Deref(p)"""
idx: t.CSizeT = self._find(key)
if idx >= self.__count__: return None
# Variant.ptr 在 Variant 结构体偏移 8 处
val_ptr: str | t.CPtr = t.CPtr(t.CUInt64T(self.__values__) + idx * _VARIANT_SIZE + 8)
return val_ptr[0]
def __setitem__(self, key: str, val: t.CNeedPtr):
"""存储值为 VARIANT_PTR。val 自动取地址 (t.CNeedPtr)。
注意: val 指向的值生命周期由调用者管理。
如需持久存储，请使用 set_int / set_str 等类型化方法。"""
self._set_variant_raw(key, VARIANT_PTR, val)
def _set_variant_raw(self, key: str, vtype: t.CInt, ptr: t.CPtr):
"""内部方法: 存储 Variant (vtype + ptr)。不自动取地址。"""
idx: t.CSizeT = self._find(key)
if idx < self.__count__:
# 更新已有键
vtype_ptr: t.CInt | t.CPtr = t.CPtr(t.CUInt64T(self.__values__) + idx * _VARIANT_SIZE)
vtype_ptr[0] = vtype
val_ptr: str | t.CPtr = t.CPtr(t.CUInt64T(self.__values__) + idx * _VARIANT_SIZE + 8)
val_ptr[0] = ptr
return
if self.__count__ >= self.__capacity__:
new_cap: t.CSizeT = self.__capacity__ * 2
new_keys: t.CPtr = self.__mbuddy__.alloc(new_cap * 8)
new_values: t.CPtr = self.__mbuddy__.alloc(new_cap * _VARIANT_SIZE)
if new_keys is None or new_values is None: return
string.memcpy(new_keys, self.__keys__, self.__count__ * 8)
string.memcpy(new_values, self.__values__, self.__count__ * _VARIANT_SIZE)
self.__keys__ = new_keys
self.__values__ = new_values
self.__capacity__ = new_cap
key_ptr: str | t.CPtr = t.CPtr(t.CUInt64T(self.__keys__) + self.__count__ * 8)
key_ptr[0] = key
vtype_ptr: t.CInt | t.CPtr = t.CPtr(t.CUInt64T(self.__values__) + self.__count__ * _VARIANT_SIZE)
vtype_ptr[0] = vtype
val_ptr: str | t.CPtr = t.CPtr(t.CUInt64T(self.__values__) + self.__count__ * _VARIANT_SIZE + 8)
val_ptr[0] = ptr
self.__count__ += 1
# ============================================================
# 类型化 setter — 在 __mbuddy__ 中分配持久存储
# ============================================================
def set_int(self, key: str, val: int):
"""存储 int 值 (VARIANT_INT)。值复制到 __mbuddy__ 持久存储。"""
storage: t.CPtr = self.__mbuddy__.alloc(8)
int_ptr: int | t.CPtr = t.CVoid(t.CUInt64T(storage), t.CPtr)
int_ptr[0] = val
self._set_variant_raw(key, VARIANT_INT, storage)
def set_str(self, key: str, val: str):
"""存储 str 值 (VARIANT_STR)。直接存储字符串指针。"""
self._set_variant_raw(key, VARIANT_STR, val)
def set_float(self, key: str, val: float):
"""存储 float 值 (VARIANT_FLOAT)。值复制到 __mbuddy__ 持久存储。"""
storage: t.CPtr = self.__mbuddy__.alloc(8)
float_ptr: float | t.CPtr = t.CVoid(t.CUInt64T(storage), t.CPtr)
float_ptr[0] = val
self._set_variant_raw(key, VARIANT_FLOAT, storage)
def set_double(self, key: str, val: t.CDouble):
"""存储 double 值 (VARIANT_DOUBLE)。值复制到 __mbuddy__ 持久存储。"""
storage: t.CPtr = self.__mbuddy__.alloc(8)
dbl_ptr: t.CDouble | t.CPtr = t.CVoid(t.CUInt64T(storage), t.CPtr)
dbl_ptr[0] = val
self._set_variant_raw(key, VARIANT_DOUBLE, storage)
def set_dict(self, key: str, val: dict | t.CPtr):
"""存储嵌套 dict 指针 (VARIANT_DICT)。"""
self._set_variant_raw(key, VARIANT_DICT, val)
def set_list(self, key: str, val: t.CPtr):
"""存储嵌套 list 指针 (VARIANT_LIST)。"""
self._set_variant_raw(key, VARIANT_LIST, val)
def set_bool(self, key: str, val: t.CInt):
"""存储 bool 值 (VARIANT_BOOL)。值复制到 __mbuddy__ 持久存储。"""
storage: t.CPtr = self.__mbuddy__.alloc(8)
bool_ptr: t.CInt | t.CPtr = t.CVoid(t.CUInt64T(storage), t.CPtr)
bool_ptr[0] = val
self._set_variant_raw(key, VARIANT_BOOL, storage)
# ============================================================
# 查询方法
# ============================================================
def get_vtype(self, key: str) -> t.CInt:
"""返回 key 对应值的 Variant 类型标签。"""
idx: t.CSizeT = self._find(key)
if idx >= self.__count__:
return VARIANT_NONE
vtype_ptr: t.CInt | t.CPtr = t.CVoid(t.CUInt64T(self.__values__) + idx * _VARIANT_SIZE, t.CPtr)
return vtype_ptr[0]
def get(self, key: str, default: t.CPtr) -> t.CPtr:
"""返回值指针，不存在则返回 default。"""
idx: t.CSizeT = self._find(key)
if idx >= self.__count__:
return default
val_ptr: str | t.CPtr = t.CVoid(t.CUInt64T(self.__values__) + idx * _VARIANT_SIZE + 8, t.CPtr)
return val_ptr[0]
def contains(self, key: str) -> t.CInt:
"""检查 key 是否存在。"""
idx: t.CSizeT = self._find(key)
if idx < self.__count__:
return 1
return 0
def __iter__(self) -> dict | t.CPtr:
self.__iter_index__ = 0
return self
def __next__(self) -> str:
if self.__iter_index__ >= self.__count__:
raise StopIteration
idx: t.CSizeT = self.__iter_index__
self.__iter_index__ = idx + 1
key_ptr: str | t.CPtr = t.CVoid(t.CUInt64T(self.__keys__) + idx * 8, t.CPtr)
return key_ptr[0]
# ============================================================
# JSON 处理：利用 includes/json 库实现序列化/反序列化
# ============================================================
def to_json(self, pool: memhub.MemManager | t.CPtr) -> json.JsonValue | t.CPtr:
"""将 dict 转换为 JsonValue 对象 (JSON_OBJECT)。
根据 Variant 类型标签自动选择合适的 JSON 值类型。"""
obj: json.JsonValue | t.CPtr = json.object(pool)
i: t.CSizeT = 0
while i < self.__count__:
key_ptr: str | t.CPtr = t.CVoid(t.CUInt64T(self.__keys__) + i * 8, t.CPtr)
vtype_ptr: t.CInt | t.CPtr = t.CVoid(t.CUInt64T(self.__values__) + i * _VARIANT_SIZE, t.CPtr)
val_ptr: str | t.CPtr = t.CVoid(t.CUInt64T(self.__values__) + i * _VARIANT_SIZE + 8, t.CPtr)
vt: t.CInt = vtype_ptr[0]
vp: t.CPtr = val_ptr[0]
jv: json.JsonValue | t.CPtr = json.null(pool)
if jv != None:
if vt == VARIANT_INT:
jv.vtype = 2 # JSON_INT
ip: int | t.CPtr = t.CVoid(t.CUInt64T(vp), t.CPtr)
jv.int_val = ip[0]
elif vt == VARIANT_STR:
jv.vtype = 4 # JSON_STRING
jv.str_val = vp
elif vt == VARIANT_BOOL:
jv.vtype = 1 # JSON_BOOL
bp: t.CInt | t.CPtr = t.CVoid(t.CUInt64T(vp), t.CPtr)
jv.bool_val = bp[0]
elif vt == VARIANT_FLOAT:
jv.vtype = 3 # JSON_FLOAT
fp: float | t.CPtr = t.CVoid(t.CUInt64T(vp), t.CPtr)
jv.float_val = fp[0]
elif vt == VARIANT_PTR:
# 默认: 将 PTR 作为整数处理
jv.vtype = 2 # JSON_INT
ip: int | t.CPtr = t.CVoid(t.CUInt64T(vp), t.CPtr)
jv.int_val = ip[0]
json.object_set(pool, obj, key_ptr[0], jv)
i += 1
return obj
def from_json(self, pool: memhub.MemManager | t.CPtr, root: json.JsonValue | t.CPtr):
"""从 JsonValue 对象填充 dict。
根据 JSON 值类型自动提取并存储为对应 Variant 类型。"""
if root == None:
return
if root.vtype != 6: # JSON_OBJECT
return
cur: json.JsonValue | t.CPtr = root.child
while cur != None:
if cur.key != None:
if cur.vtype == 2: # JSON_INT
storage: t.CPtr = self.__mbuddy__.alloc(8)
ip: int | t.CPtr = t.CVoid(t.CUInt64T(storage), t.CPtr)
ip[0] = cur.int_val
self._set_variant_raw(cur.key, VARIANT_INT, storage)
elif cur.vtype == 4: # JSON_STRING
self._set_variant_raw(cur.key, VARIANT_STR, cur.str_val)
elif cur.vtype == 1: # JSON_BOOL
storage: t.CPtr = self.__mbuddy__.alloc(8)
bp: t.CInt | t.CPtr = t.CVoid(t.CUInt64T(storage), t.CPtr)
bp[0] = cur.bool_val
self._set_variant_raw(cur.key, VARIANT_BOOL, storage)
elif cur.vtype == 3: # JSON_FLOAT
storage: t.CPtr = self.__mbuddy__.alloc(8)
fp: float | t.CPtr = t.CVoid(t.CUInt64T(storage), t.CPtr)
fp[0] = cur.float_val
self._set_variant_raw(cur.key, VARIANT_FLOAT, storage)
cur = cur.next
def dumps(self, pool: memhub.MemManager | t.CPtr) -> str:
"""将 dict 序列化为 JSON 字符串。"""
obj: json.JsonValue | t.CPtr = self.to_json(pool)
return json.write(pool, obj, False)
def loads(self, pool: memhub.MemManager | t.CPtr, json_str: str):
"""从 JSON 字符串解析并填充 dict。"""
root: json.JsonValue | t.CPtr = json.parse(pool, json_str)
self.from_json(pool, root)