TermiNexus
e25e8958f0
语法侧（M2.4）：ast/base.vp 枚举尾部追加 ASTKind.New；ast/exprs.vp 新增 NEW_SRC_*/NEW_LIFE_* 与 class New；ast/parser.vp 新增 _is_new_expr/_parse_new_expr（new 为软关键字，不进 Keyword 表，new=1/new.x/new(1) 仍是标识符）；ast/__init__.vp 再导出 New 与常量。 其余为既有 WIP 改动一并快照，保持基线一致（39 文件，+312/-237）。 未纳入：ctraits.vpi（已删除）、ctraits.vpnci、tomllib/（均未跟踪）。
271 lines
11 KiB
Plaintext
271 lines
11 KiB
Plaintext
import memhub
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import string
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import json
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# Variant type tags (consistent with _variant.py)
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define VARIANT_NONE = 0 # Untyped / null value
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define VARIANT_INT = 1 # int (i64)
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define VARIANT_FLOAT = 2 # float (f32)
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define VARIANT_DOUBLE = 3 # double (f64)
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define VARIANT_STR = 4 # str (i8*)
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define VARIANT_DICT = 5 # dict*
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define VARIANT_LIST = 6 # list*
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define VARIANT_BOOL = 7 # bool (i1/i32)
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define VARIANT_PTR = 8 # Custom pointer type
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# Variant structure size: vtype(i32, 4 bytes) + padding(4 bytes) + ptr(i8*, 8 bytes) = 16 bytes
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define _VARIANT_SIZE = 16
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class dict:
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"""Heap-allocated dynamic dictionary container based on mbuddy allocator.
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Key type is fixed to str (i8*), values are stored as Variant (type tag + untyped pointer).
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Supports nested dict/list structures and JSON serialization.
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Usage:
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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: rawptr = d["x"]
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v: int = c.Deref((int*)(p)) # int value stored as i32; read it back with an int* view
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# Nested 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((int*)(sub["a"]))
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"""
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__keys__: rawptr
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__values__: rawptr
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__count__: sizet = 0
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__capacity__: sizet = 8
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__mbuddy__: memhub.MemBuddy*
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__iter_index__: sizet = 0
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def __new__(self, mb: memhub.MemBuddy*):
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# Heap allocation for dict object
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return mb.alloc(dict.__sizeof__())
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def __init__(self, mb: memhub.MemBuddy*):
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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) -> sizet:
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return self.__count__
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def _find(self, key: str) -> sizet:
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"""Find index of target key; returns __count__ if not found"""
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for i in range(self.__count__):
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# Element address: `T*(base + byte_offset)`. rawptr is i8* and `+` scales by 1 byte, byte-identical to the old uint64(base)+n form (no integer round-trip).
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# Same form below (__getitem__/_set_variant_raw/get/get_vtype/__next__/to_json), not annotated again.
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key_ptr: str* = str*(self.__keys__ + i * 8)
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if string.strcmp(key_ptr[0], key) == 0: return i
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return self.__count__
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def __getitem__(self, key: str) -> rawptr:
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"""Return untyped pointer to value. Use c.Deref to resolve the actual value.
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Example: p: rawptr = d["x"]; v: int = *(int*(p))"""
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idx: sizet = self._find(key)
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if idx >= self.__count__: return None
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# Variant.ptr is located at offset 8 within Variant structure
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val_ptr: str* = str*(self.__values__ + idx * _VARIANT_SIZE + 8)
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return *val_ptr
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def __setitem__(self, key: str, val: &temp void):
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"""Store value as VARIANT_PTR. The address of val is taken automatically
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(non-pointer values are materialized on the caller's stack).
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Note: Lifecycle of the data pointed to by val is managed by caller.
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Use typed methods such as set_int / set_str for persistent storage."""
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self._set_variant_raw(key, VARIANT_PTR, val)
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def _set_variant_raw(self, key: str, vtype: int, ptr: rawptr):
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"""Internal method: store Variant entry (vtype + ptr). No automatic address resolution."""
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idx: sizet = self._find(key)
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if idx < self.__count__:
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# Update existing key
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vtype_ptr: int* = int*(self.__values__ + idx * _VARIANT_SIZE)
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vtype_ptr[0] = vtype
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val_ptr: str* = str*(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: sizet = self.__capacity__ * 2
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new_keys: rawptr = self.__mbuddy__.alloc(new_cap * 8)
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new_values: rawptr = 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* = str*(self.__keys__ + self.__count__ * 8)
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key_ptr[0] = key
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vtype_ptr: int* = int*(self.__values__ + self.__count__ * _VARIANT_SIZE)
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vtype_ptr[0] = vtype
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val_ptr: str* = str*(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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# Typed setters — allocate persistent storage inside __mbuddy__
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# ============================================================
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def set_int(self, key: str, val: int):
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"""Store integer value (VARIANT_INT). Value is copied to persistent storage within __mbuddy__."""
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storage: rawptr = self.__mbuddy__.alloc(8)
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int_ptr: int* = int*(storage)
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*int_ptr = 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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"""Store string value (VARIANT_STR). Raw string pointer is stored directly."""
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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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"""Store float value (VARIANT_FLOAT). Value is copied to persistent storage within __mbuddy__."""
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storage: rawptr = self.__mbuddy__.alloc(8)
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float_ptr: float* = float*(storage)
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*float_ptr = val
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self._set_variant_raw(key, VARIANT_FLOAT, storage)
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def set_double(self, key: str, val: double):
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"""Store double value (VARIANT_DOUBLE). Value is copied to persistent storage within __mbuddy__."""
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storage: rawptr = self.__mbuddy__.alloc(8)
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dbl_ptr: double* = double*(storage)
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*dbl_ptr = 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*):
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"""Store nested dictionary pointer (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: rawptr):
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"""Store nested list pointer (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: int):
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"""Store boolean value (VARIANT_BOOL). Value is copied to persistent storage within __mbuddy__."""
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storage: rawptr = self.__mbuddy__.alloc(8)
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bool_ptr: int* = int*(storage)
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*bool_ptr = val
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self._set_variant_raw(key, VARIANT_BOOL, storage)
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# ============================================================
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# Query methods
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# ============================================================
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def get_vtype(self, key: str) -> int:
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"""Return Variant type tag associated with specified key."""
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idx: sizet = self._find(key)
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if idx >= self.__count__:
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return VARIANT_NONE
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vtype_ptr: int* = int*(self.__values__ + idx * _VARIANT_SIZE)
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return vtype_ptr[0]
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def get(self, key: str, default: rawptr) -> rawptr:
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"""Return value pointer; return default pointer if key does not exist."""
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idx: sizet = self._find(key)
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if idx >= self.__count__:
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return default
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val_ptr: str* = str*(self.__values__ + idx * _VARIANT_SIZE + 8)
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return *val_ptr
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def contains(self, key: str) -> int:
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"""Check whether target key exists."""
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idx: sizet = self._find(key)
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if idx < self.__count__: return 1
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return 0
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def __iter__(self) -> dict*:
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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: sizet = self.__iter_index__
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self.__iter_index__ = idx + 1
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key_ptr: str* = str*(self.__keys__ + idx * 8)
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return key_ptr[0]
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# ============================================================
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# JSON utilities: serialization / deserialization via includes/json library
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# ============================================================
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def to_json(self, pool: memhub.MemManager*) -> json.JsonValue*:
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"""Convert dict instance to JsonValue object (JSON_OBJECT).
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Automatically select corresponding JSON value type according to Variant tag."""
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obj: json.JsonValue* = json.object(pool)
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for i in range(self.__count__):
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key_ptr: str* = str*(self.__keys__ + i * 8)
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vtype_ptr: int* = int*(self.__values__ + i * _VARIANT_SIZE)
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val_ptr: str* = str*(self.__values__ + i * _VARIANT_SIZE + 8)
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vt: int = vtype_ptr[0]
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vp: rawptr = val_ptr[0]
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jv: json.JsonValue* = 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* = int*(vp)
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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: int* = int*(vp)
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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* = float*(vp)
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jv.float_val = fp[0]
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elif vt == VARIANT_PTR:
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# Fallback: treat raw pointer as integer
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jv.vtype = 2 # JSON_INT
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ip: int* = int*(vp)
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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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return obj
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def from_json(self, pool: memhub.MemManager*, root: json.JsonValue*):
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"""Populate dict from JsonValue object.
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Extract values and store them as matching Variant types based on JSON type tag."""
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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* = 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: rawptr = self.__mbuddy__.alloc(8)
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ip: int* = int*(storage)
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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: rawptr = self.__mbuddy__.alloc(8)
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bp: int* = int*(storage)
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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: rawptr = self.__mbuddy__.alloc(8)
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fp: float* = float*(storage)
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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*) -> str:
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"""Serialize dict to JSON string."""
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obj: json.JsonValue* = self.to_json(pool)
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return json.write(pool, obj, False)
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def loads(self, pool: memhub.MemManager*, json_str: str):
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"""Parse JSON string and populate dict instance."""
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root: json.JsonValue* = json.parse(pool, json_str)
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self.from_json(pool, root)
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