error details from python errors PydanticValueError (#185)

* working on PydanticValueError, fix #183

* rust class working

* linting

* add benchmarks

* improvements to PydanticValueError

* custom int context value processing

* fix tests

pydantic_core/__init__.py

@@ -1,4 +1,4 @@
-from ._pydantic_core import SchemaError, SchemaValidator, ValidationError, __version__
+from ._pydantic_core import PydanticValueError, SchemaError, SchemaValidator, ValidationError, __version__
 from ._types import Config, Schema
 
-__all__ = '__version__', 'Config', 'Schema', 'SchemaError', 'SchemaValidator', 'ValidationError'
+__all__ = '__version__', 'Config', 'Schema', 'SchemaValidator', 'SchemaError', 'ValidationError', 'PydanticValueError'

pydantic_core/_pydantic_core.pyi

@@ -1,7 +1,14 @@
-from typing import Any, Dict, List, Optional, Union
+import sys
+from typing import Any, Dict, List, Optional, TypedDict, Union
 
 from pydantic_core._types import Config, Schema
 
+if sys.version_info < (3, 11):
+    from typing_extensions import NotRequired
+else:
+    from typing import NotRequired
+
+__all__ = '__version__', 'SchemaValidator', 'SchemaError', 'ValidationError', 'PydanticValueError'
 __version__: str
 
 class SchemaValidator:
@@ -16,11 +23,28 @@ class SchemaValidator:
     ) -> bool: ...
     def validate_assignment(self, field: str, input: Any, data: Dict[str, Any]) -> Dict[str, Any]: ...
 
-class SchemaError(ValueError):
+class SchemaError(Exception):
     pass
 
+class ErrorDetails(TypedDict):
+    kind: str
+    loc: List[Union[int, str]]
+    message: str
+    input_value: Any
+    context: NotRequired[Dict[str, Any]]
+
 class ValidationError(ValueError):
     title: str
 
     def error_count(self) -> int: ...
-    def errors(self) -> List[Dict[str, Any]]: ...
+    def errors(self) -> List[ErrorDetails]: ...
+
+class PydanticValueError(ValueError):
+    kind: str
+    message_template: str
+    context: Optional[Dict[str, Union[str, int]]]
+
+    def __init__(
+        self, kind: str, message_template: str, context: Optional[Dict[str, Union[str, int]]] = None
+    ) -> None: ...
+    def message(self) -> str: ...