24103052497

Committed 07 Apr 2026 08:33PM UTC coverage: 52.311% (-40.6%) from 92.909%

Build # 24103052497

Build Type

Pull #23228

github

Committed by

web-flow

Commit Message

Merge 18fdfb0fd into b05152cd9

Pull Request Pull Request #23228: Add persistent dependency inference cache for incremental --changed-dependents

Coverage Stats

31 of 136 new or added lines in 2 files covered. (22.79%)

23028 existing lines in 605 files now uncovered.

31671 of 60544 relevant lines covered (52.31%)

1.05 hits per line

Source File
Press 'n' to go to next uncovered line, 'b' for previous

97.56

/src/python/pants/backend/python/util_rules/ancestor_files.py

# Copyright 2020 Pants project contributors (see CONTRIBUTORS.md).
# Licensed under the Apache License, Version 2.0 (see LICENSE).

from __future__ import annotations

import os
from dataclasses import dataclass

from pants.engine.fs import EMPTY_SNAPSHOT, PathGlobs, Snapshot
from pants.engine.intrinsics import digest_to_snapshot, get_digest_contents
from pants.engine.rules import collect_rules, implicitly, rule


@dataclass(frozen=True)
class AncestorFilesRequest:
    """A request for ancestor files of the given names.

    "Ancestor files" means all files with one of the given names that are siblings of, or in parent
    directories of, a `.py` or `.pyi` file in the input_files.
    """

    input_files: tuple[str, ...]
    requested: tuple[str, ...]
    ignore_empty_files: bool = False


@dataclass(frozen=True)
class AncestorFiles:
    """Any ancestor files found."""

    snapshot: Snapshot


def putative_ancestor_files(input_files: tuple[str, ...], requested: tuple[str, ...]) -> set[str]:
    """Return the paths of potentially missing ancestor files.

    NB: The sources are expected to not have had their source roots stripped.
    Therefore this function will consider superfluous files at and above the source roots,
    (e.g., src/python/<name>, src/<name>). It is the caller's responsibility to filter these
    out if necessary.
    """
    packages: set[str] = set()
    for input_file in input_files:
        if not input_file.endswith((".py", ".pyi")):
            continue
        pkg_dir = os.path.dirname(input_file)
        if pkg_dir in packages:
            continue
        package = ""
        packages.add(package)
        for component in pkg_dir.split(os.sep):
            package = os.path.join(package, component)
            packages.add(package)

    return {
        os.path.join(package, requested_f) for package in packages for requested_f in requested
    } - set(input_files)


@rule
async def find_ancestor_files(request: AncestorFilesRequest) -> AncestorFiles:
    putative = putative_ancestor_files(request.input_files, request.requested)
    if not putative:
        return AncestorFiles(EMPTY_SNAPSHOT)

    # NB: This will intentionally _not_ error on any unmatched globs.
    globs = PathGlobs(putative)
    if request.ignore_empty_files:
        digest_contents = await get_digest_contents(**implicitly({globs: PathGlobs}))
        snapshot = await digest_to_snapshot(
            **implicitly(PathGlobs([fc.path for fc in digest_contents if fc.content.strip()]))
        )
    else:
        snapshot = await digest_to_snapshot(**implicitly({globs: PathGlobs}))

    return AncestorFiles(snapshot)


def rules():
    return collect_rules()

1	# Copyright 2020 Pants project contributors (see CONTRIBUTORS.md).
2	# Licensed under the Apache License, Version 2.0 (see LICENSE).
3
4	from __future__ import annotations	2✔
5
6	import os	2✔
7	from dataclasses import dataclass	2✔
8
9	from pants.engine.fs import EMPTY_SNAPSHOT, PathGlobs, Snapshot	2✔
10	from pants.engine.intrinsics import digest_to_snapshot, get_digest_contents	2✔
11	from pants.engine.rules import collect_rules, implicitly, rule	2✔
12
13
14	@dataclass(frozen=True)	2✔
15	class AncestorFilesRequest:	2✔
16	"""A request for ancestor files of the given names.
17
18	"Ancestor files" means all files with one of the given names that are siblings of, or in parent
19	directories of, a `.py` or `.pyi` file in the input_files.
20	"""
21
22	input_files: tuple[str, ...]	2✔
23	requested: tuple[str, ...]	2✔
24	ignore_empty_files: bool = False	2✔
25
26
27	@dataclass(frozen=True)	2✔
28	class AncestorFiles:	2✔
29	"""Any ancestor files found."""
30
31	snapshot: Snapshot	2✔
32
33
34	def putative_ancestor_files(input_files: tuple[str, ...], requested: tuple[str, ...]) -> set[str]:	2✔
35	"""Return the paths of potentially missing ancestor files.
36
37	NB: The sources are expected to not have had their source roots stripped.
38	Therefore this function will consider superfluous files at and above the source roots,
39	(e.g., src/python/<name>, src/<name>). It is the caller's responsibility to filter these
40	out if necessary.
41	"""
42	packages: set[str] = set()	2✔
43	for input_file in input_files:	2✔
44	if not input_file.endswith((".py", ".pyi")):	2✔
UNCOV 45	continue	×
46	pkg_dir = os.path.dirname(input_file)	2✔
47	if pkg_dir in packages:	2✔
48	continue	2✔
49	package = ""	2✔
50	packages.add(package)	2✔
51	for component in pkg_dir.split(os.sep):	2✔
52	package = os.path.join(package, component)	2✔
53	packages.add(package)	2✔
54
55	return {	2✔
56	os.path.join(package, requested_f) for package in packages for requested_f in requested
57	} - set(input_files)
58
59
60	@rule	2✔
61	async def find_ancestor_files(request: AncestorFilesRequest) -> AncestorFiles:	2✔
62	putative = putative_ancestor_files(request.input_files, request.requested)	2✔
63	if not putative:	2✔
64	return AncestorFiles(EMPTY_SNAPSHOT)	2✔
65
66	# NB: This will intentionally _not_ error on any unmatched globs.
67	globs = PathGlobs(putative)	2✔
68	if request.ignore_empty_files:	2✔
69	digest_contents = await get_digest_contents(**implicitly({globs: PathGlobs}))	2✔
70	snapshot = await digest_to_snapshot(	2✔
71	**implicitly(PathGlobs([fc.path for fc in digest_contents if fc.content.strip()]))
72	)
73	else:
74	snapshot = await digest_to_snapshot(**implicitly({globs: PathGlobs}))	2✔
75
76	return AncestorFiles(snapshot)	2✔
77
78
79	def rules():	2✔
80	return collect_rules()	2✔

pantsbuild / pants / 24103052497

Source File Press 'n' to go to next uncovered line, 'b' for previous

Source File
Press 'n' to go to next uncovered line, 'b' for previous