Add basic inflator cython support

pyproject.toml

@@ -8,8 +8,10 @@ authors = [
 license = "LGPL-3.0-or-later"
 requires-python = ">=3.13"
 dependencies = [
+    "cython>=3.1.3",
     "hatchling>=1.27.0",
     "jinja2>=3.1.6",
+    "setuptools>=80.9.0",
 ]
 
 [build-system]

src/megasniff/__init__.py

@@ -1,2 +1 @@
 from .inflator import SchemaInflatorGenerator
-from .deflator import SchemaDeflatorGenerator

src/megasniff/__main__.py

@@ -1,23 +1,28 @@
 from __future__ import annotations
 
-import json
 from dataclasses import dataclass
-from types import NoneType
 from typing import Optional
 from typing import TypedDict
 
 import megasniff.exceptions
-from megasniff.deflator import SchemaDeflatorGenerator, JsonObject
+from megasniff.python_to_cython import python_obj_to_cython
 from . import SchemaInflatorGenerator
 
 
-@dataclass(frozen=True)
+@dataclass
 class ASchema:
-    a: int
+    a: int | None
     b: float | str
     bs: Optional[BSchema]
+    d: int
     c: float = 1.1
 
+    def __init__(self, a: int | None, b: float | str, bs: Optional[BSchema], c: float = 1.1):
+        self.a = a
+        self.b = b
+        self.bs = bs
+        self.c = c
+        self.d = a or 0
 
 @dataclass
 class BSchema:
@@ -31,10 +36,23 @@ class BSchema:
 class CSchema:
     l: set[int | ASchema]
 
+@dataclass
+class SomeData:
+    a: int
+    b: float
+    c: str
 
 def main():
+    # ccode = python_obj_to_cython(ASchema)
+    # print(ccode)
+    # exit(0)
+
+    # infl = SchemaInflatorGenerator(strict_mode=True)
+    # fn = infl.schema_to_inflator(SomeData)
+    # print(fn({'a': 1, 'b': 1.1, 'c': 'asdf'}))
     infl = SchemaInflatorGenerator(strict_mode=True)
     fn = infl.schema_to_inflator(ASchema)
+    # exit(0)
     # print(t)
     # print(n)
     # exec(t, n)
@@ -44,7 +62,8 @@ def main():
     # d = {'a': 1, 'b': 1, 'c': 0, 'bs': {'a': 1, 'b': 2, 'c': 3, 'd': {'a': 1, 'b': 2.1, 'bs': None}}}
     # d = {'a': 2, 'b': 2, 'bs': {'a': 2, 'b': 'a', 'c': 0, 'd': {'a': 2, 'b': 2}}}
     # d = {'l': ['1', {'a': 42, 'b': 1}]}
-    d = {'a': 2, 'b': '2', 'bs': None}
+    # d = {'a': None, 'b': '2', 'bs': None}
+    d = {'a': None, 'b': '2', 'bs': {'a': 1, 'b': 'a', 'c': 1.1, 'd': {'a': 1, 'b': '', 'bs': None}}}
     try:
         o = fn(d)
         print(o)
@@ -59,40 +78,5 @@ def main():
         print(e)
 
 
-@dataclass
-class DSchema:
-    a: dict
-    b: dict[str, int | float | dict]
-    c: str | float | ASchema
-    d: ESchema
-
-
-@dataclass
-class ESchema:
-    a: list[list[list[str]]]
-    b: str | int
-
-
-@dataclass
-class ZSchema:
-    z: ZSchema | None
-    d: ZSchema | int
-
-
-def main_deflator():
-    deflator = SchemaDeflatorGenerator(store_sources=True, explicit_casts=True, strict_mode=True)
-    fn = deflator.schema_to_deflator(DSchema)
-    print(getattr(fn, '__megasniff_sources__', '## No data'))
-    # ret = fn(ZSchema(ZSchema(ZSchema(None, 42), 42), ZSchema(None, 42)))
-    ret = fn(DSchema({'a': 34}, {}, ASchema(1, 'a', None), ESchema([[['a'], ['b']]], ['b'])))
-    # assert ret['a'] == 1
-    # assert ret['b'] == 1.1
-    # assert ret['c'] == 'a'
-    # assert ret['d']['a'][0][0][0] == 'a'
-    # assert ret['d']['b'] == 'b'
-    print(json.dumps(ret, indent=4))
-    pass
-
-
 if __name__ == '__main__':
-    main_deflator()
+    main()

src/megasniff/deflator.py

@@ -1,307 +0,0 @@
-# Copyright (C) 2025 Shevchenko A
-# SPDX-License-Identifier: LGPL-3.0-or-later
-from __future__ import annotations
-
-import importlib.resources
-import typing
-from collections.abc import Callable
-from dataclasses import dataclass
-from types import NoneType, UnionType
-from typing import get_args, Union, Annotated, Sequence, TypeAliasType, \
-    OrderedDict, TypeAlias
-
-import jinja2
-
-from .utils import *
-
-JsonObject: TypeAlias = Union[None, bool, int, float, str, list['JsonObject'], dict[str, 'JsonObject']]
-
-
-class Unwrapping:
-    kind: str
-
-
-class OtherUnwrapping(Unwrapping):
-    tp: str
-
-    def __init__(self, tp: str = ''):
-        self.kind = 'other'
-        self.tp = tp
-
-
-@dataclass()
-class ObjectFieldUnwrapping:
-    key: str
-    object_key: str
-    unwrapping: Unwrapping
-
-
-class ObjectUnwrapping(Unwrapping):
-    fields: list[ObjectFieldUnwrapping]
-
-    def __init__(self, fields: list[ObjectFieldUnwrapping]):
-        self.kind = 'object'
-        self.fields = fields
-
-
-class ListUnwrapping(Unwrapping):
-    item_unwrap: Unwrapping
-
-    def __init__(self, item_unwrap: Unwrapping):
-        self.kind = 'list'
-        self.item_unwrap = item_unwrap
-
-
-class DictUnwrapping(Unwrapping):
-    key_unwrap: Unwrapping
-    value_unwrap: Unwrapping
-
-    def __init__(self, key_unwrap: Unwrapping, value_unwrap: Unwrapping):
-        self.kind = 'dict'
-        self.key_unwrap = key_unwrap
-        self.value_unwrap = value_unwrap
-
-
-class FuncUnwrapping(Unwrapping):
-    fn: str
-
-    def __init__(self, fn: str):
-        self.kind = 'fn'
-        self.fn = fn
-
-
-@dataclass
-class UnionKindUnwrapping:
-    kind: str
-    unwrapping: Unwrapping
-
-
-class UnionUnwrapping(Unwrapping):
-    union_kinds: list[UnionKindUnwrapping]
-
-    def __init__(self, union_kinds: list[UnionKindUnwrapping]):
-        self.kind = 'union'
-        self.union_kinds = union_kinds
-
-
-def _flatten_type(t: type | TypeAliasType) -> tuple[type, Optional[str]]:
-    if isinstance(t, TypeAliasType):
-        return _flatten_type(t.__value__)
-
-    origin = get_origin(t)
-
-    if origin is Annotated:
-        args = get_args(t)
-        return _flatten_type(args[0])[0], args[1]
-
-    return t, None
-
-
-def _schema_to_deflator_func(t: type | TypeAliasType) -> str:
-    t, _ = _flatten_type(t)
-    return 'deflate_' + typename(t).replace('.', '_')
-
-
-def _fallback_unwrapper(obj: Any) -> JsonObject:
-    if isinstance(obj, (int, float, str, bool)):
-        return obj
-    elif isinstance(obj, list):
-        return list(map(_fallback_unwrapper, obj))
-    elif isinstance(obj, dict):
-        return dict(map(lambda x: (_fallback_unwrapper(x[0]), _fallback_unwrapper(x[1])), obj.items()))
-    elif hasattr(obj, '__dict__'):
-        ret = {}
-        for k, v in obj.__dict__:
-            if isinstance(k, str) and k.startswith('_'):
-                continue
-            k = _fallback_unwrapper(k)
-            v = _fallback_unwrapper(v)
-            ret[k] = v
-        return ret
-    return None
-
-
-class SchemaDeflatorGenerator:
-    templateLoader: jinja2.BaseLoader
-    templateEnv: jinja2.Environment
-
-    object_template: jinja2.Template
-    _store_sources: bool
-    _strict_mode: bool
-    _explicit_casts: bool
-
-    def __init__(self,
-                 loader: Optional[jinja2.BaseLoader] = None,
-                 strict_mode: bool = False,
-                 explicit_casts: bool = False,
-                 store_sources: bool = False,
-                 *,
-                 object_template_filename: str = 'deflator.jinja2',
-                 ):
-
-        self._strict_mode = strict_mode
-        self._store_sources = store_sources
-        self._explicit_casts = explicit_casts
-
-        if loader is None:
-            template_path = importlib.resources.files('megasniff.templates')
-            loader = jinja2.FileSystemLoader(str(template_path))
-
-        self.templateLoader = loader
-        self.templateEnv = jinja2.Environment(loader=self.templateLoader)
-        self.object_template = self.templateEnv.get_template(object_template_filename)
-
-    def schema_to_deflator(self,
-                           schema: type,
-                           strict_mode_override: Optional[bool] = None,
-                           explicit_casts_override: Optional[bool] = None,
-                           ) -> Callable[[Any], dict[str, Any]]:
-        txt, namespace = self._schema_to_deflator(schema,
-                                                  strict_mode_override=strict_mode_override,
-                                                  explicit_casts_override=explicit_casts_override,
-                                                  )
-        imports = ('from typing import Any\n'
-                   'from megasniff.exceptions import MissingFieldException, FieldValidationException\n')
-        txt = imports + '\n' + txt
-        exec(txt, namespace)
-        fn = namespace[_schema_to_deflator_func(schema)]
-        if self._store_sources:
-            setattr(fn, '__megasniff_sources__', txt)
-        return fn
-
-    def schema_to_unwrapper(self, schema: type | TypeAliasType, *, _visited_types: Optional[list[type]] = None):
-        if _visited_types is None:
-            _visited_types = []
-        else:
-            _visited_types = _visited_types.copy()
-
-        schema, field_rename = _flatten_type(schema)
-
-        if schema in _visited_types:
-            return FuncUnwrapping(_schema_to_deflator_func(schema)), field_rename, set(), {schema}
-        _visited_types.append(schema)
-        ongoing_types = set()
-        recurcive_types = set()
-
-        origin = get_origin(schema)
-
-        ret_unw = None
-
-        if origin is not None:
-            if origin is list:
-                args = get_args(schema)
-                item_unw, arg_rename, ongoings, item_rec = self.schema_to_unwrapper(args[0],
-                                                                                    _visited_types=_visited_types)
-                ret_unw = ListUnwrapping(item_unw)
-                recurcive_types |= item_rec
-                ongoing_types |= ongoings
-            elif origin is dict:
-                args = get_args(schema)
-                if len(args) != 2:
-                    ret_unw = OtherUnwrapping()
-                else:
-                    k, v = args
-                    k_unw, _, k_ongoings, k_rec = self.schema_to_unwrapper(k, _visited_types=_visited_types)
-                    v_unw, _, v_ongoings, v_rec = self.schema_to_unwrapper(k, _visited_types=_visited_types)
-                    ongoing_types |= k_ongoings | v_ongoings
-                    recurcive_types |= k_rec | v_rec
-                    ret_unw = DictUnwrapping(k_unw, v_unw)
-            elif origin is UnionType or origin is Union:
-                args = get_args(schema)
-                union_unwraps = []
-                for targ in args:
-                    arg_unw, arg_rename, ongoings, arg_rec = self.schema_to_unwrapper(targ,
-                                                                                      _visited_types=_visited_types)
-                    union_unwraps.append(UnionKindUnwrapping(typename(targ), arg_unw))
-                    ongoing_types |= ongoings
-                    recurcive_types |= arg_rec
-                ret_unw = UnionUnwrapping(union_unwraps)
-            else:
-                raise NotImplementedError
-        else:
-            if schema is int:
-                ret_unw = OtherUnwrapping('int')
-            elif schema is float:
-                ret_unw = OtherUnwrapping('float')
-            elif schema is bool:
-                ret_unw = OtherUnwrapping('bool')
-            elif schema is str:
-                ret_unw = OtherUnwrapping('str')
-            elif schema is None or schema is NoneType:
-                ret_unw = OtherUnwrapping()
-            elif schema is dict:
-                ret_unw = OtherUnwrapping()
-            elif schema is list:
-                ret_unw = OtherUnwrapping()
-            elif is_class_definition(schema):
-                hints = typing.get_type_hints(schema)
-                fields = []
-                for k, f in hints.items():
-                    f_unw, f_rename, ongoings, f_rec = self.schema_to_unwrapper(f, _visited_types=_visited_types)
-                    fields.append(ObjectFieldUnwrapping(f_rename or k, k, f_unw))
-                    ongoing_types |= ongoings
-                    recurcive_types |= f_rec
-
-                ret_unw = ObjectUnwrapping(fields)
-            else:
-                raise NotImplementedError()
-
-        return ret_unw, field_rename, set(_visited_types) | ongoing_types, recurcive_types
-
-    def _schema_to_deflator(self,
-                            schema: type | Sequence[TupleSchemaItem | tuple[str, type]] | OrderedDict[str, type],
-                            strict_mode_override: Optional[bool] = None,
-                            explicit_casts_override: Optional[bool] = None,
-                            into_type_override: Optional[type | TypeAliasType] = None,
-                            *,
-                            _funcname='deflate',
-                            _namespace=None,
-                            ) -> tuple[str, dict]:
-        if strict_mode_override is not None:
-            strict_mode = strict_mode_override
-        else:
-            strict_mode = self._strict_mode
-        if explicit_casts_override is not None:
-            explicit_casts = explicit_casts_override
-        else:
-            explicit_casts = self._explicit_casts
-
-        template = self.object_template
-
-        types_for_namespace = set()
-        recursive_types = {schema}
-
-        namespace = {
-            'JsonObject': JsonObject,
-            'fallback_unwrapper': _fallback_unwrapper,
-        }
-
-        convertor_functext = ''
-
-        added_types = set()
-
-        while len(recursive_types ^ (recursive_types & added_types)) > 0:
-            rec_t = list(recursive_types ^ (recursive_types & added_types))[0]
-            rec_unw, _, rec_t_namespace, rec_rec_t = self.schema_to_unwrapper(rec_t)
-            recursive_types |= rec_rec_t
-            types_for_namespace |= rec_t_namespace
-
-            rec_functext = template.render(
-                funcname=_schema_to_deflator_func(rec_t),
-                from_type=typename(rec_t),
-                into_type=None,
-                root_unwrap=rec_unw,
-                hashname=hashname,
-                strict_check=strict_mode,
-                explicit_cast=explicit_casts,
-            )
-
-            convertor_functext += '\n\n\n' + rec_functext
-            added_types.add(rec_t)
-
-        for t in types_for_namespace:
-            namespace[typename(t)] = t
-
-        convertor_functext = '\n'.join(list(filter(lambda x: len(x.strip()), convertor_functext.split('\n'))))
-
-        return convertor_functext, namespace

src/megasniff/inflator.py

@@ -2,11 +2,18 @@
 # SPDX-License-Identifier: LGPL-3.0-or-later
 from __future__ import annotations
 import collections.abc
+import hashlib
 import importlib.resources
+import importlib.util
+import os
+import subprocess
+import sys
+import tempfile
 from collections import defaultdict
 from collections.abc import Callable
 from dataclasses import dataclass
-from types import NoneType, UnionType
+from pathlib import Path
+from types import NoneType, UnionType, ModuleType
 from typing import Optional, get_origin, get_args, Union, Annotated, Literal, Sequence, List, Set, TypeAliasType, \
     OrderedDict
 
@@ -14,6 +21,7 @@ import jinja2
 
 from . import utils
 from .utils import *
+import random, string
 
 
 @dataclass
@@ -23,6 +31,7 @@ class TypeRenderData:
     is_list: bool
     is_union: bool
     is_strict: bool
+    ctype: str
 
 
 @dataclass
@@ -48,6 +57,7 @@ class FieldRenderData:
     is_optional: bool
     allow_none: bool
     default_option: Optional[str]
+    ctype: str
 
     def __init__(self,
                  argname: str,
@@ -55,7 +65,8 @@ class FieldRenderData:
                  typename: str,
                  is_optional: bool,
                  allow_none: bool,
-                 default_option: Optional[str]):
+                 default_option: Optional[str],
+                 ctype: str):
         self.argname = argname
         self.constrs = constrs
         self.typename = typename
@@ -63,6 +74,221 @@ class FieldRenderData:
         self.allow_none = allow_none
         self.default_option = default_option
         self.argname_escaped = _escape_python_name(argname)
+        self.ctype = ctype
+
+
+def randomword(length):
+    letters = string.ascii_lowercase
+    return ''.join(random.choice(letters) for i in range(length))
+
+
+def exec_cython(txt: str, namespace: dict, name: str):
+    """
+    Drop-in замена exec(txt, namespace), но через cython.
+    Возвращает callable объект из namespace['inflator'].
+    """
+    # генерируем уникальное имя для модуля
+    h = hashlib.sha256(txt.encode() + str(sorted(namespace.keys())).encode()).hexdigest()[:16]
+    modname = f"_cyexec_{h}"
+
+    build_dir = tempfile.mkdtemp(prefix="cyexec_")
+    pyx_file = os.path.join(build_dir, f"{modname}.pyx")
+
+    # соберём код для .pyx
+    # сначала экспортируем namespace
+    export_lines = []
+    for k, v in namespace.items():
+        if k not in {'int', 'float', 'str'}:
+            export_lines.append(f"{k} = __ns__['{k}']")
+
+    pyx_code = f"""
+# cython: language_level=3
+# cython: boundscheck=False, wraparound=False, nonecheck=False
+# AUTO-GENERATED
+
+# Вставляем runtime namespace
+import builtins
+__ns__ = builtins.__dict__['_cyexec_ns']
+
+cdef class NullableInt:
+    cdef long value
+    cdef bint has
+
+    cpdef set(self, long value):
+        self.value = value
+        self.has = 1
+
+    cpdef unset(self):
+        self.has = 0
+
+cdef class NullableDouble:
+    cdef double value
+    cdef bint has
+
+    cpdef set(self, double value):
+        self.value = value
+        self.has = 1
+
+    cpdef unset(self):
+        self.has = 0
+{os.linesep.join(export_lines)}
+
+
+
+
+# пользовательский код
+{txt}
+"""
+
+    # пишем файл
+    with open(pyx_file, "w") as f:
+        f.write(pyx_code)
+
+    # нужно сохранить namespace в builtins, чтобы cython его видел
+    import builtins
+    builtins._cyexec_ns = namespace
+
+    # компилируем через cythonize
+    setup_code = f"""
+from setuptools import setup
+from Cython.Build import cythonize
+setup(
+    name="{modname}",
+    ext_modules=cythonize("{pyx_file}", compiler_directives={{"language_level": "3"}}),
+    script_args=["build_ext", "--inplace"],
+)
+"""
+    setup_file = os.path.join(build_dir, "setup.py")
+    with open(setup_file, "w") as f:
+        f.write(setup_code)
+
+    subprocess.check_call([sys.executable, setup_file, "build_ext", "--inplace"], cwd=build_dir)
+
+    # находим .so файл
+    for fn in os.listdir(build_dir):
+        if fn.startswith(modname) and fn.endswith((".so", ".pyd")):
+            so_path = os.path.join(build_dir, fn)
+            break
+    else:
+        raise RuntimeError("Cython build failed, no .so produced")
+
+    # импортим как модуль
+    spec = importlib.util.spec_from_file_location(modname, so_path)
+    mod = importlib.util.module_from_spec(spec)
+    sys.modules[modname] = mod
+    spec.loader.exec_module(mod)
+
+    # чистим временный namespace в builtins
+    del builtins._cyexec_ns
+
+    return getattr(mod, name)
+
+
+@dataclass
+class BasicTypeVariationTest:
+    index: int
+    basic_type: str
+
+
+@dataclass
+class ObjectTypeVariationTest:
+    index: int
+    fields_contains: list[tuple[str, TypeVariationTest | None]]
+
+
+@dataclass
+class TypeVariationTest:
+    types: list[TypeConstructionSchema]
+    basic_tests: list[BasicTypeVariationTest]
+    object_tests: list[ObjectTypeVariationTest]
+
+
+@dataclass
+class TypeConstructionSchema:
+    tp: type
+    allow_none: bool
+    kwargs: Optional[dict[str, tuple[str, list[TypeConstructionSchema] | type]]]
+
+    @property
+    def typed_key_pairs(self) -> set[str]:
+        ret = set()
+        for k, (_, v) in self.kwargs.items():
+            if isinstance(v, type):
+                ret.add(f'{k}:{v}')
+            else:
+                if not isinstance(v, list):
+                    v = [v]
+                for _v in v:
+                    ret.add(f'{k}:{_v.tp}')
+
+        return ret
+
+
+class Z1:
+    a: int
+    b: int
+
+
+class Z2:
+    c: int
+    d: int
+
+
+class Z3:
+    e: int
+    f: int
+
+
+class A:
+    a: int
+    b: Z1 | Z3
+
+
+class B:
+    a: int
+    b: Z2
+
+
+class C:
+    z1: Z1
+    z2: Z2
+
+
+_ = A | B | C
+
+
+def find_types_variations(types: list[TypeConstructionSchema]) -> TypeVariationTest:
+    basic_tests = []
+    object_tests = []
+    for i, tp in enumerate(types):
+        if tp.kwargs is None:
+            basic_tests.append(BasicTypeVariationTest(i, _type_to_ctype(tp.tp, tp.allow_none)))
+    for i, tp in enumerate(types):
+        if tp.kwargs is not None:
+            tp_keys = []
+            uniq_keys = set()
+            if i < len(types):
+                keys = set()
+                for t in types[i + 1:]:
+                    keys |= set((t.kwargs or {}).keys())
+                obj_keys = set(tp.kwargs.keys())
+                uniq_keys = (obj_keys ^ keys) & obj_keys
+
+            if len(uniq_keys) > 0:
+                k = list(uniq_keys)[0]
+                object_tests.append(ObjectTypeVariationTest(i, [(k, None)]))
+            else:
+                pass
+
+    return TypeVariationTest(types, basic_tests, object_tests)
+
+
+def _type_to_ctype(t: type, allow_none: bool) -> str:
+    if t is int:
+        return 'NullableInt' if allow_none else 'long'
+    if t is float:
+        return 'NullableFloat' if allow_none else 'double'
+    return 'object'
 
 
 class SchemaInflatorGenerator:
@@ -100,18 +326,23 @@ class SchemaInflatorGenerator:
                            strict_mode_override: Optional[bool] = None,
                            from_type_override: Optional[type | TypeAliasType] = None
                            ) -> Callable[[dict[str, Any]], Any]:
+        name = 'inflate'
+        if isinstance(schema, type):
+            name = f'inflate_{schema.__name__}'
         if from_type_override is not None and '__getitem__' not in dir(from_type_override):
             raise RuntimeError('from_type_override must provide __getitem__')
         txt, namespace = self._schema_to_inflator(schema,
-                                                  _funcname='inflate',
+                                                  _funcname=name,
                                                   strict_mode_override=strict_mode_override,
                                                   from_type_override=from_type_override,
                                                   )
         imports = ('from typing import Any\n'
                    'from megasniff.exceptions import MissingFieldException, FieldValidationException\n')
         txt = imports + '\n' + txt
-        exec(txt, namespace)
-        fn = namespace['inflate']
+        fn = exec_cython(txt, namespace, name)
+        # fn = exec_numba(txt, namespace, func_name=name)
+        # exec(txt, namespace)
+        # fn = namespace[name]
         if self._store_sources:
             setattr(fn, '__megasniff_sources__', txt)
         return fn
@@ -132,10 +363,11 @@ class SchemaInflatorGenerator:
 
         if is_union:
             typerefs = list(map(lambda x: self._unwrap_typeref(x, strict_mode), argtypes))
-            return TypeRenderData(typerefs, allow_none, False, True, False)
+            return TypeRenderData(typerefs, allow_none, False, True, False, 'object')
         elif type_origin in [list, set]:
             rd = self._unwrap_typeref(argtypes[0], strict_mode)
-            return IterableTypeRenderData(rd, allow_none, True, False, False, type_origin.__name__)
+            return IterableTypeRenderData(rd, allow_none, True, False, False, type_origin.__name__,
+                                          'NullableList' if allow_none else 'list')
         else:
             t = argtypes[0]
 
@@ -148,7 +380,8 @@ class SchemaInflatorGenerator:
                                   allow_none,
                                   is_list,
                                   False,
-                                  strict_mode if is_builtin else False)
+                                  strict_mode if is_builtin else False,
+                                  _type_to_ctype(t, allow_none))
 
     def _schema_to_inflator(self,
                             schema: type | Sequence[TupleSchemaItem | tuple[str, type]] | OrderedDict[str, type],
@@ -243,6 +476,7 @@ class SchemaInflatorGenerator:
                     has_default,
                     allow_none,
                     default_option if not isinstance(default_option, str) else f"'{default_option}'",
+                    typeref.ctype
                 )
             )
 

src/megasniff/templates/deflator.jinja2

@@ -1,110 +0,0 @@
-{% macro render_unwrap_object(unwrapping, from_container, into_container) -%}
-{%- set out -%}
-{{ into_container }} = {}
-{% for kv in unwrapping.fields %}
-{{ render_unwrap(kv.unwrapping, from_container + '.' + kv.object_key, into_container + "['" + kv.key + "']") }}
-{% endfor %}
-{%- endset %}
-{{out}}
-{%- endmacro %}
-
-{% macro render_unwrap_dict(unwrapping, from_container, into_container) -%}
-{%- set out -%}
-{{ into_container }} = {}
-{% if strict_check %}
-if not isinstance({{from_container}}, dict):
-    raise FieldValidationException('{{from_container.replace("'", "\\'")}}', 'dict', str(type({{from_container}})))
-{% endif %}
-{% if explicit_cast %}
-{% set from_container = 'dict(' + from_container + ')' %}
-{% endif %}
-for k_{{hashname(unwrapping)}}, v_{{hashname(unwrapping)}} in {{from_container}}.items():
-{{ render_unwrap(unwrapping.key_unwrap, 'k_' + hashname(unwrapping), 'k_' + hashname(unwrapping)) | indent(4) }}
-{{ render_unwrap(unwrapping.value_unwrap, into_container + '[v_' + hashname(unwrapping) + ']', 'v_' + hashname(unwrapping)) | indent(4) }}
-{%- endset %}
-{{out}}
-{%- endmacro %}
-
-{% macro render_unwrap_list(unwrapping, from_container, into_container) -%}
-{%- set out -%}
-{{into_container}} = []
-{% if strict_check %}
-if not isinstance({{from_container}}, list):
-    raise FieldValidationException('{{from_container.replace("'", "\\'")}}', 'list', str(type({{from_container}})))
-{% endif %}
-{% if explicit_cast %}
-{% set from_container = 'list(' + from_container + ')' %}
-{% endif %}
-for {{hashname(unwrapping)}} in {{from_container}}:
-{{ render_unwrap(unwrapping.item_unwrap, hashname(unwrapping), hashname(unwrapping)+'_tmp_container') | indent(4) }}
-    {{into_container}}.append({{hashname(unwrapping)}}_tmp_container)
-{%- endset %}
-{{out}}
-{%- endmacro %}
-
-
-{% macro render_unwrap_other(unwrapping, from_container, into_container) -%}
-{%- set out -%}
-{% if unwrapping.tp != '' and strict_check %}
-if not isinstance({{from_container}}, {{unwrapping.tp}}):
-    raise FieldValidationException('{{from_container.replace("'", "\\'")}}', '{{unwrapping.tp}}', str(type({{from_container}})))
-{% endif %}
-{% if unwrapping.tp != '' and explicit_cast %}
-{{into_container}} = {{unwrapping.tp}}({{from_container}})
-{% else %}
-{{into_container}} = {{from_container}}
-{% endif %}
-{%- endset %}
-{{out}}
-{%- endmacro %}
-
-
-{% macro render_unwrap_union(unwrapping, from_container, into_container) -%}
-{%- set out -%}
-{% for union_kind in unwrapping.union_kinds %}
-{% if loop.index > 1 %}el{% endif %}if isinstance({{from_container}}, {{union_kind.kind}}):
-{{render_unwrap(union_kind.unwrapping, from_container, into_container) | indent(4)}}
-{% endfor %}
-{% if strict_check %}
-else:
-    raise FieldValidationException('{{from_container.replace("'", "\\'")}}', 'dict', str(type({{from_container}})))
-{% elif explicit_cast %}
-else:
-{{render_unwrap(unwrapping.union_kinds[-1], from_container, into_container) | indent(4)}}
-{% else %}
-else:
-    {{into_container}} = fallback_unwrap({{from_container}})
-{% endif %}
-{%- endset %}
-{{out}}
-{%- endmacro %}
-
-
-{% macro render_unwrap(unwrapping, from_container, into_container) -%}
-{%- set out -%}
-{% if unwrapping.kind == 'dict' %}
-{{ render_unwrap_dict(unwrapping, from_container, into_container) }}
-{% elif unwrapping.kind == 'list' %}
-{{ render_unwrap_list(unwrapping, from_container, into_container) }}
-{% elif unwrapping.kind == 'object' %}
-{{ render_unwrap_object(unwrapping, from_container, into_container) }}
-{% elif unwrapping.kind == 'union' %}
-{{ render_unwrap_union(unwrapping, from_container, into_container) }}
-{% elif unwrapping.kind == 'fn' %}
-{{into_container}} = {{ unwrapping.fn }}({{from_container}})
-{% else %}
-{{ render_unwrap_other(unwrapping, from_container, into_container) }}
-{% endif %}
-{%- endset %}
-{{out}}
-{%- endmacro %}
-
-
-def {{funcname}}(from_data{% if from_type is not none%}: {{from_type}}{%endif%}) -> {% if into_type is none %}JsonObject{%else%}{{into_type}}{%endif%}:
-    """
-    {{from_type}} -> {{into_type}}
-    """
-    {{ render_unwrap(root_unwrap, 'from_data', 'ret') | indent(4) }}
-    return ret
-
-

src/megasniff/templates/inflator.jinja2

@@ -2,16 +2,45 @@
 {% import "unwrap_type_data.jinja2" as unwrap_type_data %}
 
 
-def {{funcname}}(from_data: {% if from_type is none %}dict[str, Any]{% else %}{{from_type}}{% endif %}) {% if tgt_type is not none %} -> {{tgt_type}} {% endif %}:
+{% macro render_setter(argname, argval) -%}
+{%- set out -%}
+{% if argname.startswith('Nullable') %}
+{% if argval == 'None' %}
+{{argname}}.unset()
+{% else %}
+{{argname}}.set({{argval}})
+{%endif%}
+{% else %}
+{{argname}} = {{argval}}
+{% endif %}
+{%- endset %}
+{{out}}
+{%- endmacro %}
+
+{% macro check_null(argname) -%}
+{%- set out -%}
+{% if argname.startswith('Nullable') %}
+if {{argname}}.has:
+{% else %}
+if {{argname}} is None:
+{% endif %}
+{%- endset %}
+{{out}}
+{%- endmacro %}
+
+
+cpdef object {{funcname}}(dict from_data):
     """
     {{tgt_type}}
     """
     from_data_keys = from_data.keys()
+    cdef object conv_data
 
     {% for conv in conversions %}
+    cdef {{conv.argctype}} {{conv.argname_escaped}}
     if '{{conv.argname}}' not in from_data_keys:
     {% if conv.is_optional %}
-        {{conv.argname_escaped}} = {{conv.default_option}}
+{{ render_setter(conv.argname_escaped, conv.default_option) | indent(4*2) }}
     {% else %}
         raise MissingFieldException('{{conv.argname}}', "{{conv.typename | replace('"', "'")}}")
     {% endif %}
@@ -21,7 +50,7 @@ def {{funcname}}(from_data: {% if from_type is none %}dict[str, Any]{% else %}{{
         {% if not conv.allow_none %}
             raise FieldValidationException('{{conv.argname}}', "{{conv.typename | replace('"', "'")}}", conv_data)
         {% else %}
-            {{conv.argname_escaped}} = None
+            {{ render_setter(conv.argname_escaped, 'None') | indent(4*3) }}
         {% endif %}
         else:
 

src/megasniff/utils.py

@@ -71,11 +71,3 @@ def typename(tp: type) -> str:
     if get_origin(tp) is None and hasattr(tp, '__name__'):
         return tp.__name__
     return str(tp)
-
-
-def is_class_definition(obj):
-    return isinstance(obj, type) or inspect.isclass(obj)
-
-
-def hashname(obj) -> str:
-    return '_' + str(hash(obj)).replace('-', '_')

tests/test_basic_deflator.py

@@ -1,77 +0,0 @@
-from __future__ import annotations
-from dataclasses import dataclass
-from typing import Optional
-
-from megasniff.deflator import SchemaDeflatorGenerator
-from src.megasniff import SchemaInflatorGenerator
-
-
-def test_basic_deflator():
-    class A:
-        a: int
-
-        def __init__(self, a: int):
-            self.a = a
-
-    class B:
-        def __init__(self, b: int):
-            self.b = b
-
-    defl = SchemaDeflatorGenerator()
-    fn = defl.schema_to_deflator(A)
-    a = fn(A(42))
-
-    assert a['a'] == 42
-
-    fnb = defl.schema_to_deflator(B)
-    b = fnb(B(11))
-    assert len(b) == 0
-
-
-def test_unions():
-    @dataclass
-    class A:
-        a: int | str
-
-    defl = SchemaDeflatorGenerator()
-    fn = defl.schema_to_deflator(A)
-
-    a = fn(A(42))
-    assert a['a'] == 42
-    a = fn(A('42'))
-    assert a['a'] == '42'
-    a = fn(A('42a'))
-    assert a['a'] == '42a'
-
-
-@dataclass
-class CircA:
-    b: CircB
-
-
-@dataclass
-class CircB:
-    a: CircA | None
-
-
-def test_circular():
-    defl = SchemaDeflatorGenerator()
-    fn = defl.schema_to_deflator(CircA)
-    a = fn(CircA(CircB(CircA(CircB(None)))))
-
-    assert isinstance(a['b'], dict)
-    assert isinstance(a['b']['a'], dict)
-    assert a['b']['a']['b']['a'] is None
-
-
-def test_optional():
-    @dataclass
-    class C:
-        a: Optional[int] = None
-
-    defl = SchemaDeflatorGenerator()
-    fn = defl.schema_to_deflator(C)
-    c = fn(C())
-    assert c['a'] is None
-    c = fn(C(123))
-    assert c['a'] == 123

tests/test_explicit_cast_deflator.py

@@ -1,94 +0,0 @@
-from dataclasses import dataclass
-
-import pytest
-
-from megasniff import SchemaDeflatorGenerator
-from megasniff.exceptions import FieldValidationException
-
-
-def test_global_explicit_casts_basic():
-    class A:
-        a: int
-
-        def __init__(self, a):
-            self.a = a
-
-    defl = SchemaDeflatorGenerator(explicit_casts=True)
-    fn = defl.schema_to_deflator(A)
-    a = fn(A(42))
-
-    assert a['a'] == 42
-
-    a = fn(A(42.0))
-    assert a['a'] == 42
-
-    a = fn(A('42'))
-    assert a['a'] == 42
-
-    with pytest.raises(TypeError):
-        fn(A(['42']))
-
-
-def test_global_explicit_casts_basic_override():
-    class A:
-        a: int
-
-        def __init__(self, a):
-            self.a = a
-
-    defl = SchemaDeflatorGenerator(explicit_casts=False)
-    fn = defl.schema_to_deflator(A, explicit_casts_override=True)
-    a = fn(A(42))
-
-    assert a['a'] == 42
-
-    a = fn(A(42.0))
-    assert a['a'] == 42
-
-    a = fn(A('42'))
-    assert a['a'] == 42
-
-    with pytest.raises(TypeError):
-        fn(A(['42']))
-
-
-def test_global_explicit_casts_list():
-    @dataclass
-    class A:
-        a: list[int]
-
-    defl = SchemaDeflatorGenerator(explicit_casts=True)
-    fn = defl.schema_to_deflator(A)
-    a = fn(A([42]))
-
-    assert a['a'] == [42]
-
-    a = fn(A([42.0, 42]))
-    assert len(a['a']) == 2
-    assert a['a'][0] == 42
-    assert a['a'][1] == 42
-
-
-def test_global_explicit_casts_circular():
-    @dataclass
-    class A:
-        a: list[int]
-
-    @dataclass
-    class B:
-        b: list[A | int]
-
-    defl = SchemaDeflatorGenerator(explicit_casts=True)
-    fn = defl.schema_to_deflator(B)
-    b = fn(B([A([]), 42]))
-
-    assert len(b['b']) == 2
-    assert isinstance(b['b'][0], dict)
-    assert len(b['b'][0]['a']) == 0
-    assert isinstance(b['b'][1], int)
-
-    b = fn(B([42.0]))
-    assert b['b'][0] == 42
-
-    b = fn(B([A([1.1])]))
-    assert b['b'][0]['a'][0] == 1

tests/test_strict_mode_deflator.py

@@ -1,88 +0,0 @@
-from dataclasses import dataclass
-
-import pytest
-
-from megasniff import SchemaDeflatorGenerator
-from megasniff.exceptions import FieldValidationException
-
-
-def test_global_strict_mode_basic():
-    class A:
-        a: int
-
-        def __init__(self, a):
-            self.a = a
-
-    defl = SchemaDeflatorGenerator(strict_mode=True)
-    fn = defl.schema_to_deflator(A)
-    a = fn(A(42))
-
-    assert a['a'] == 42
-
-    with pytest.raises(FieldValidationException):
-        fn(A(42.0))
-    with pytest.raises(FieldValidationException):
-        fn(A('42'))
-    with pytest.raises(FieldValidationException):
-        fn(A(['42']))
-
-
-def test_global_strict_mode_basic_override():
-    class A:
-        a: int
-
-        def __init__(self, a):
-            self.a = a
-
-    defl = SchemaDeflatorGenerator(strict_mode=False)
-    fn = defl.schema_to_deflator(A, strict_mode_override=True)
-    a = fn(A(42))
-
-    assert a['a'] == 42
-
-    with pytest.raises(FieldValidationException):
-        fn(A(42.0))
-    with pytest.raises(FieldValidationException):
-        fn(A('42'))
-    with pytest.raises(FieldValidationException):
-        fn(A(['42']))
-
-
-def test_global_strict_mode_list():
-    @dataclass
-    class A:
-        a: list[int]
-
-    defl = SchemaDeflatorGenerator(strict_mode=True)
-    fn = defl.schema_to_deflator(A)
-    a = fn(A([42]))
-
-    assert a['a'] == [42]
-
-    with pytest.raises(FieldValidationException):
-        fn(A([42.0, 42]))
-
-
-def test_global_strict_mode_circular():
-    @dataclass
-    class A:
-        a: list[int]
-
-    @dataclass
-    class B:
-        b: list[A | int]
-
-    defl = SchemaDeflatorGenerator(strict_mode=True)
-    fn = defl.schema_to_deflator(B)
-    b = fn(B([A([]), 42]))
-
-    assert len(b['b']) == 2
-    assert isinstance(b['b'][0], dict)
-    assert len(b['b'][0]['a']) == 0
-    assert isinstance(b['b'][1], int)
-
-    with pytest.raises(FieldValidationException):
-        fn(B([42.0]))
-
-    with pytest.raises(FieldValidationException):
-        fn(B([A([1.1])]))

uv.lock

@@ -42,6 +42,35 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/3c/38/bbe2e63902847cf79036ecc75550d0698af31c91c7575352eb25190d0fb3/coverage-7.9.2-py3-none-any.whl", hash = "sha256:e425cd5b00f6fc0ed7cdbd766c70be8baab4b7839e4d4fe5fac48581dd968ea4", size = 204005, upload-time = "2025-07-03T10:54:13.491Z" },
 ]
 
+[[package]]
+name = "cython"
+version = "3.1.3"
+source = { registry = "https://pypi.org/simple" }
+sdist = { url = "https://files.pythonhosted.org/packages/18/ab/915337fb39ab4f4539a313df38fc69938df3bf14141b90d61dfd5c2919de/cython-3.1.3.tar.gz", hash = "sha256:10ee785e42328924b78f75a74f66a813cb956b4a9bc91c44816d089d5934c089", size = 3186689, upload-time = "2025-08-13T06:19:13.619Z" }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/7f/93/0e5dfcc6215a6c2cae509d7e40f8fb197237ba5998c936e9c19692f8eedf/cython-3.1.3-cp313-cp313-macosx_10_13_x86_64.whl", hash = "sha256:9458d540ef0853ea4fc65b8a946587bd483ef7244b470b3d93424eb7b04edeb1", size = 2998232, upload-time = "2025-08-13T06:20:35.817Z" },
+    { url = "https://files.pythonhosted.org/packages/6b/6c/01b22de45e3a9b86fbe4a18cd470146514209448cb4d3d3ba9c72390d45b/cython-3.1.3-cp313-cp313-macosx_11_0_arm64.whl", hash = "sha256:32d1b22c3b231326e9f16480a7f508c6841bbf7d0615c2d6f489ebc72dd05205", size = 2830052, upload-time = "2025-08-13T06:20:37.71Z" },
+    { url = "https://files.pythonhosted.org/packages/52/08/a7d4b91b144b4bd015e932303861061cd43221f737ecdc6e380a438f245f/cython-3.1.3-cp313-cp313-manylinux1_i686.manylinux_2_28_i686.manylinux_2_5_i686.whl", hash = "sha256:d4c7e0b8584b02a349952de7d7d47f89c97cbf3fee74962e89e3caa78139ec84", size = 3359478, upload-time = "2025-08-13T06:20:39.811Z" },
+    { url = "https://files.pythonhosted.org/packages/f5/7d/b44ee735439ee73a88c6532536cfbc5b2f146c5f315effa124e85aadb447/cython-3.1.3-cp313-cp313-manylinux2014_aarch64.manylinux_2_17_aarch64.manylinux_2_28_aarch64.whl", hash = "sha256:c9178f0c06f4bc92372dc44e3867e9285bebd556953e47857c26b389aabe2828", size = 3155157, upload-time = "2025-08-13T06:20:42.305Z" },
+    { url = "https://files.pythonhosted.org/packages/a8/e0/ef1a44ba765057b04e99cf34dcc1910706a666ea66fcd2b92175ab645416/cython-3.1.3-cp313-cp313-manylinux2014_x86_64.manylinux_2_17_x86_64.manylinux_2_28_x86_64.whl", hash = "sha256:d4da2e624d381e9790152672bfc599a5fb4b823b99d82700a10f5db3311851f9", size = 3305331, upload-time = "2025-08-13T06:20:44.423Z" },
+    { url = "https://files.pythonhosted.org/packages/62/f1/8bf3ea5babdef82df3023e72522c71bfc5cc5091e9710828a0dda81bda88/cython-3.1.3-cp313-cp313-musllinux_1_2_aarch64.whl", hash = "sha256:680c9168882c5e8031dd31df199b9a5ee897e95136d15f8c6454b62162ede25e", size = 3171968, upload-time = "2025-08-13T06:20:48.962Z" },
+    { url = "https://files.pythonhosted.org/packages/b5/c3/c1383f987d3add9cb8655943f6a0f164bfd06951f28e51b7887d12c8716a/cython-3.1.3-cp313-cp313-musllinux_1_2_i686.whl", hash = "sha256:833cd0fdba9210d2f1f29e097579565a296d7ff567fd63e8cf5fde4c14339f4f", size = 3372840, upload-time = "2025-08-13T06:20:51.495Z" },
+    { url = "https://files.pythonhosted.org/packages/71/d5/02fb7454756cb31b0c044050ee563ac172314aa8e74e5a4dd73bf77041d3/cython-3.1.3-cp313-cp313-musllinux_1_2_x86_64.whl", hash = "sha256:c04367fa0e6c35b199eb51d64b5e185584b810f6c2b96726ce450300faf99686", size = 3317912, upload-time = "2025-08-13T06:20:53.461Z" },
+    { url = "https://files.pythonhosted.org/packages/91/62/b96227adf45236952f7cf07f869ff4157b82fe25ff7bb5ba9a3037c98993/cython-3.1.3-cp313-cp313-win32.whl", hash = "sha256:f02ef2bf72a576bf541534c704971b8901616db431bc46d368eed1d6b20aaa1e", size = 2479889, upload-time = "2025-08-13T06:20:55.437Z" },
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 name = "hatchling"
 version = "1.27.0"
@@ -108,11 +137,13 @@ wheels = [
 
 [[package]]
 name = "megasniff"
-version = "0.1.2"
+version = "0.2.3.post2"
 source = { editable = "." }
 dependencies = [
+    { name = "cython" },
     { name = "hatchling" },
     { name = "jinja2" },
+    { name = "setuptools" },
 ]
 
 [package.dev-dependencies]
@@ -123,8 +154,10 @@ dev = [
 
 [package.metadata]
 requires-dist = [
+    { name = "cython", specifier = ">=3.1.3" },
     { name = "hatchling", specifier = ">=1.27.0" },
     { name = "jinja2", specifier = ">=3.1.6" },
+    { name = "setuptools", specifier = ">=80.9.0" },
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@@ -199,6 +232,15 @@ wheels = [
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 ]
 
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 name = "trove-classifiers"
 version = "2025.5.9.12"