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fix(parsing): correctly handle nested discriminated unions

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stainless-app[bot] 2025-07-09 11:45:47 +00:00
parent 88921d3d34
commit 693c53b857
2 changed files with 53 additions and 5 deletions
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13
src/opencode_ai/_models.py
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@ -2,9 +2,10 @@ from __future__ import annotations
import os
import inspect
from typing import TYPE_CHECKING, Any, Type, Union, Generic, TypeVar, Callable, cast
from typing import TYPE_CHECKING, Any, Type, Union, Generic, TypeVar, Callable, Optional, cast
from datetime import date, datetime
from typing_extensions import (
List,
Unpack,
Literal,
ClassVar,
@ -366,7 +367,7 @@ def _construct_field(value: object, field: FieldInfo, key: str) -> object:
if type_ is None:
raise RuntimeError(f"Unexpected field type is None for {key}")
return construct_type(value=value, type_=type_)
return construct_type(value=value, type_=type_, metadata=getattr(field, "metadata", None))
def is_basemodel(type_: type) -> bool:
@ -420,7 +421,7 @@ def construct_type_unchecked(*, value: object, type_: type[_T]) -> _T:
return cast(_T, construct_type(value=value, type_=type_))
def construct_type(*, value: object, type_: object) -> object:
def construct_type(*, value: object, type_: object, metadata: Optional[List[Any]] = None) -> object:
"""Loose coercion to the expected type with construction of nested values.
If the given value does not match the expected type then it is returned as-is.
@ -438,8 +439,10 @@ def construct_type(*, value: object, type_: object) -> object:
type_ = type_.__value__ # type: ignore[unreachable]
# unwrap `Annotated[T, ...]` -> `T`
if is_annotated_type(type_):
meta: tuple[Any, ...] = get_args(type_)[1:]
if metadata is not None:
meta: tuple[Any, ...] = tuple(metadata)
elif is_annotated_type(type_):
meta = get_args(type_)[1:]
type_ = extract_type_arg(type_, 0)
else:
meta = tuple()