Merge branch 'main' into fix/mergebot-update-branch-issue

Author: vilsonrodrigues

README.md

@@ -142,7 +142,7 @@ class AppSettings(BaseSettings):
 
 msgspec-ext leverages msgspec's high-performance serialization with bulk JSON decoding for maximum speed.
 
-**Benchmark Results** (10 runs × 1000 iterations, Python 3.12):
+**Benchmark Results** (Python 3.12):
 
 | Library | Time per load | Relative Performance |
 |---------|---------------|---------------------|

src/msgspec_ext/settings.py

@@ -349,30 +349,42 @@ def _preprocess_env_value(cls, env_value: str, field_type: type) -> Any:  # noqa
 
         return env_value
 
-        # Handle bool
+        # Fast path: Direct type comparison (avoid get_origin when possible)
+        if field_type is str:
+            return env_value
         if field_type is bool:
             return env_value.lower() in ("true", "1", "yes", "y", "t")
-
-        # Handle int
         if field_type is int:
             try:
                 return int(env_value)
             except ValueError as e:
                 raise ValueError(f"Cannot convert '{env_value}' to int") from e
-
-        # Handle float
         if field_type is float:
             try:
                 return float(env_value)
             except ValueError as e:
                 raise ValueError(f"Cannot convert '{env_value}' to float") from e
 
-        # Handle JSON types (list, dict, nested structs)
-        if env_value.startswith(("{", "[")):
-            try:
-                return msgspec.json.decode(env_value.encode())
-            except msgspec.DecodeError as e:
-                raise ValueError(f"Invalid JSON in env var: {e}") from e
+        # Only use typing introspection for complex types (Union, Optional, etc.)
+        origin = get_origin(field_type)
+        if origin is Union:
+            args = get_args(field_type)
+            non_none = [a for a in args if a is not type(None)]
+            if non_none:
+                # Cache the resolved type for future use
+                resolved_type = non_none[0]
+                cls._type_cache[field_type] = resolved_type
+                # Recursively process with the non-None type
+                return cls._preprocess_env_value(env_value, resolved_type)
+
+        return env_value
+
+        # Type conversion (required for JSON encoding)
+        if field_type is bool:
+            return env_value.lower() in ("true", "1", "yes", "y", "t")
+        if field_type is int:
+            return int(env_value)
+        if field_type is float:
+            return float(env_value)
 
-        # Default: return as string
         return env_value

src/msgspec_ext/version.py

@@ -1 +1 @@
-__version__ = "0.1.0"
+__version__ = "0.2.0"