修复了大量存在的问题，增加了假鸭子类型等等机制

Test/JsonTest/temp/9361526faa30d4d2.pyi

@@ -0,0 +1,30 @@
+"""
+Auto-generated Python stub file from main.py
+Module: main
+"""
+
+
+import t, c
+from stdint import *
+from stdio import printf
+import mpool
+import json
+import string
+import w32.win32memory as win32mem
+import testcheck
+
+def test_construct(pool: mpool.MPool | t.CPtr) -> t.CInt: pass
+
+def test_build_structures(pool: mpool.MPool | t.CPtr) -> t.CInt: pass
+
+def test_parse(pool: mpool.MPool | t.CPtr) -> t.CInt: pass
+
+def test_write(pool: mpool.MPool | t.CPtr) -> t.CInt: pass
+
+def test_nested(pool: mpool.MPool | t.CPtr) -> t.CInt: pass
+
+def test_mpool_reuse() -> t.CInt: pass
+
+def test_escape(pool: mpool.MPool | t.CPtr) -> t.CInt: pass
+
+def main() -> t.CInt | t.CExport: pass