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pantsbuild / pants / 19636484222

24 Nov 2025 01:45PM UTC coverage: 78.831% (-1.5%) from 80.283%
19636484222

Pull #22917

github

web-flow
Merge d61443516 into 612e19cd8
Pull Request #22917: Mostly revert "Temporarily disable macos cache"

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71.43
/src/python/pants/engine/internals/target_adaptor.py
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# Copyright 2020 Pants project contributors (see CONTRIBUTORS.md).
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# Licensed under the Apache License, Version 2.0 (see LICENSE).
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from __future__ import annotations
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import dataclasses
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from dataclasses import dataclass
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from typing import Any, final
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from pants.build_graph.address import Address
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from pants.engine.engine_aware import EngineAwareParameter
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from pants.util.frozendict import FrozenDict
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from pants.util.ordered_set import FrozenOrderedSet
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from pants.vcs.hunk import TextBlock
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@dataclass(frozen=True)
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class SourceBlock:
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    """Block of lines in a file.
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    Lines are 1 indexed, `start` is inclusive, `end` is exclusive.
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    SourceBlock is used to describe a set of source lines that are owned by a Target,
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    thus it can't be empty, i.e. `start` must be less than `end`.
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    """
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    start: int
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    end: int
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    def __init__(self, start: int, end: int):
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        object.__setattr__(self, "start", start)
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        object.__setattr__(self, "end", end)
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        self.__post_init__()
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    def __post_init__(self):
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        if self.start >= self.end:
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            raise ValueError(f"{self.start=} must be less than {self.end=}")
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    def __len__(self) -> int:
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        return self.end - self.start
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    def is_touched_by(self, o: TextBlock) -> bool:
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        """Check if the TextBlock touches the SourceBlock.
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        The function behaves similarly to range intersection check, but some edge cases are
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        different. See test cases for details.
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        """
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        if o.count == 0:
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            start = o.start + 1
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            end = start
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        else:
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            start = o.start
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            end = o.end
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        if self.end < start:
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            return False
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        if end < self.start:
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            return False
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        return True
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    @classmethod
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    def from_text_block(cls, text_block: TextBlock) -> SourceBlock:
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        """Convert (start, count) range to (start, end) range.
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        Useful for unified diff conversion, see
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        https://www.gnu.org/software/diffutils/manual/html_node/Detailed-Unified.html
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        """
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        return cls(start=text_block.start, end=text_block.start + text_block.count)
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class SourceBlocks(FrozenOrderedSet[SourceBlock]):
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    pass
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@dataclass(frozen=True)
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class TargetAdaptorRequest(EngineAwareParameter):
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    """Lookup the TargetAdaptor for an Address."""
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    address: Address
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    description_of_origin: str = dataclasses.field(hash=False, compare=False)
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    def debug_hint(self) -> str:
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        return self.address.spec
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@final
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class TargetAdaptor:
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    """A light-weight object to store target information before being converted into the Target
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    API."""
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    __slots__ = ("type_alias", "name", "kwargs", "description_of_origin", "origin_sources_blocks")
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    def __init__(
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        self,
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        type_alias: str,
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        name: str | None,
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        __description_of_origin__: str,
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        __origin_sources_blocks__: FrozenDict[str, SourceBlocks] = FrozenDict(),
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        **kwargs: Any,
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    ) -> None:
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        self.type_alias = type_alias
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        self.name = name
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        try:
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            self.kwargs = FrozenDict.deep_freeze(kwargs)
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        except TypeError as e:
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            # FrozenDict's ctor eagerly computes its hash. If some kwarg is unhashable it will
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            # raise a TypeError, which we enhance with the description of origin.
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            raise TypeError(f"In {__description_of_origin__}: {e}")
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        self.description_of_origin = __description_of_origin__
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        self.origin_sources_blocks = __origin_sources_blocks__
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    def with_new_kwargs(self, **kwargs) -> TargetAdaptor:
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        return TargetAdaptor(
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            type_alias=self.type_alias,
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            name=self.name,
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            __description_of_origin__=self.description_of_origin,
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            __origin_sources_blocks__=self.origin_sources_blocks,
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            **kwargs,
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        )
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    def __repr__(self) -> str:
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        maybe_blocks = f", {self.origin_sources_blocks}" if self.origin_sources_blocks else ""
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        return f"TargetAdaptor(type_alias={self.type_alias}, name={self.name}, origin={self.description_of_origin}{maybe_blocks})"
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    def __eq__(self, other: Any | TargetAdaptor) -> bool:
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        if not isinstance(other, TargetAdaptor):
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            return NotImplemented
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        return (
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            self.type_alias == other.type_alias
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            and self.name == other.name
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            and self.kwargs == other.kwargs
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        )
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    def __hash__(self) -> int:
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        return hash((self.type_alias, self.name, self.kwargs))
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    @property
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    def name_explicitly_set(self) -> bool:
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        return self.name is not None
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