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fix(rust): bind Type::f() to the type a scoped or external use names - #2791
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Review comments at @codebase_rag/parsers/call_resolver.py:
- Around line 1640-1656: In the scoped Rust type resolution path, remove the
`_try_resolve_via_trie` fallback after `_try_method_on_class` fails for
`Type::item`; return `(True, None)` instead so the resolver does not attribute
the call to a same-named item on another type.
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…oped use cannot rebind it (#2622)
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…match pathless dependencies by package name (#2622)
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…od and bind members only for crates.io or patched dependencies (#2622)
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…ets the dependency requirement (#2622)
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Re the outside-diff P2 "Incompatible root patch produces false local call edges" (comment 5965374739): fixed in 80f4f99. Cause: the patch lookup matched only the source and the package name. It never checked the patched package's version, so a path patch that Cargo ignores ("patch was not used") still made the local member the crate Change:
Requirement matching lives in a new module, Tests:
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…ts for a dependency (#2622)
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…nless its version is pinned lower (#2622)
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…endency requirement (#2622)
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…new-2622 # Conflicts: # codebase_rag/parsers/call_resolver.py
Main's #2595 decides a Type::fn() whose path head binds an external crate before any probe, reading the manifest's pathless entries as external. A pathless entry renamed onto a workspace member (`base-alias = { version = "0.1", package = "my-base" }`) fetches the crate the repo holds, so `use base_alias::Meter; Meter::new()` lost its edge after the merge. The check now asks rust_head_is_member_dep first, as this branch's other external-head check does. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01EbsCWQcSTGQXv3g5sk418m
`test_mcp_context_scopes_free_text_search_to_the_resolved_project` mocked `list_projects` as [local, other], but the server's default project is the name its root derives to, which carries a path hash since #2412. The check from #2461 refuses a default the graph does not list, so the tool returned that error before any search ran and the test failed on main and in every PR's test job. The mocked graph now lists the derived name. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01EbsCWQcSTGQXv3g5sk418m (cherry picked from commit ac11bbb)
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Actionable comments posted: 1
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Inline comments:
Review comments at @codebase_rag/parsers/call_resolver.py:
- Around line 2221-2229: Update _resolve_rust_scoped_type_path to fall back to
_rust_owned_method when _try_method_on_class misses, including when bound is
external, so scoped calls can resolve first-party impl methods and trait
defaults. Restrict fallback owners to impl blocks whose rust_impl_self_paths
resolve to bound, preserving the guarantee that a shadowed same-named type
cannot match.
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codebase_rag/constants/ast_rust.pycodebase_rag/logs.pycodebase_rag/parsers/call_resolver.pycodebase_rag/parsers/import_processor.pycodebase_rag/parsers/rs/type_inference.py
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…faults on the bound type (#2622)
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Summary
Type::f()call, and a method called on its result (Type::new().m(), orlet b = Type::new(); b.m()), now binds the type that the innermostusenamingTypepoints at: the caller's own function-bodyuse, then an enclosing inlinemod(mod tests { use my_beta::Builder; }), then the file. Before, every probe read only the file's bindings and then searched types by simple name, so the crate's ownBuilder, or any first-partyParserstanding in forregex_syntax::Parser, answered as an exact edge, sometimes in a crate the caller does not depend on.usepath into an external crate never resolves to a first-party type. That covers a toolchain crate (std,core,alloc,proc_macro), or a dependency the importing package's manifest fetches from outside the repo that is not a crate the repo holds. Such a call records no first-party edge, and a receiver typed by such a path reads as external. Before, the raw path's last segment was matched against every registered type (_resolve_rust_class_qn), and the file-level type lookup fell through to the same simple-name search.ImportProcessor.rust_crate_reachesanswers it from the manifests the import half already parses, cached and reset with them. The resolver applies it in two ways:_nameable_candidates), the simple-name type searches (_resolve_class_name,_resolve_rust_class_qn) and chain return types (_resolve_type_to_class_qn). A reachable same-named candidate is picked instead of an unreachable one.resolve_function_calldrops any Rust result still outside the closure. One such route is a match arm typed by its variant's name: ripgrep'sOk(WalkEvent::Dir(ent))boundent.path()to the root package's integration-test helpertests::util::Dir.usenames lacks the item, the call binds nothing instead of falling to the bare-name guess (CodeRabbit).x: crate::a::Builder), so a bodyuse crate::b::Builder;cannot rebind it, and the resolver resolves such a path through the module it names (Greptile).codebase_rag/parsers/call_resolver.py:_rust_scoped_typemirrors the walk order of_rust_walk_enclosing_scopes._resolve_rust_scoped_type_pathis a probe right after the inline-scope one._rust_scoped_local_typesrebinds bare receiver types._chain_class_qnand_infer_rust_assoc_base_typetake the Rust caller._rust_path_is_external._rust_module_path_type._rust_crate_reaches.codebase_rag/parsers/import_processor.py: the dependency closure.codebase_rag/parsers/rs/type_inference.py: declared types keep their module path.codebase_rag/logs.py: one debug message.Demo
Animated runs
The screenshot runs the issue's workspace verbatim.
cargo test -p my-alphapasses with beta's value. It is indexed withcgr starton main and on this branch into a fresh Memgraph, and the CALLS edges oftop_level,fn_scopedanduses_betaare queried:alpha's same-namedParser/Builder.app's calls leave the graph (external crate), anduses_betabindscrates.beta.src.lib.Builder.new/.build, exact.It then indexes BurntSushi/ripgrep (HEAD 3fce3b5) with both checkouts and classifies every cross-crate CALLS edge against each member's transitive (dev-)dependency closure. On main the counts match the issue exactly (exact 938/23, heuristic 705/780). On this branch they are exact 954/0 and heuristic 869/0: no CALLS edge leaves the caller's dependency closure. Heuristic edges into dependencies rise because the guess now picks the reachable same-named candidate where it used to pick an unreachable one.
regex/src/ban.rs:62no longer binds rg's own CLIParser.printer/src/json.rs:1042now binds grep-regex'sRegexMatcherBuilder, a dev-dependency of printer, instead of pcre2's.Type of Change
Related Issues
Fixes #2622
Related: #2595 (#2543, prelude/std
Type::fn()), #2599 (#2542, barepub usere-exports).git merge-treeagainst both branches reports conflicts only incall_resolver.py, and the conflict hunks are byte-identical to the ones each branch already has againstorigin/main(main's Lua and module-constant changes). This branch adds none.Test Plan
codebase_rag/tests/test_rust_scoped_use_type_paths.pytest_file_use_of_external_crate_type_binds_no_first_party_typetest_fn_scoped_use_of_external_crate_type_binds_no_first_party_typetest_inline_mod_use_binds_the_dev_dependency_typetest_inline_mod_use_binds_a_chained_call_on_the_imported_typetest_inline_mod_use_of_external_crate_type_binds_no_first_party_typetest_fn_scoped_use_of_first_party_type_shadows_the_module_typeorigin/main, by restoring main'scall_resolver.py).test_local_type_path_still_binds_the_local_type: nousenames it, at module level and underuse super::*.test_imported_dependency_type_is_not_captured_by_a_same_named_type: a file-leveluse my_beta::Builderkeeps binding beta, and neither alpha'sBuildernor a sibling module'sBuildercaptures it.test_scoped_use_of_a_different_name_leaves_the_call_alone: a functionuse std::fmt::Writeand a test-moduleuse my_beta::OtherleaveBuilder::new()on the crate's own type.codebase_rag/tests/test_rust_crate_dependency_scope.py(the issue's third expectation)test_name_guess_into_a_non_dependency_crate_yields_no_edge: an untypedparts.count()inbaseboundtop::Counter::count, heuristic, thoughtopdepends onbase.test_type_found_by_name_in_a_non_dependency_crate_yields_no_edge:Meter::new().gauge()foundtop'sMeterby simple name, exact.test_match_arm_typed_by_variant_name_binds_no_non_dependency_type: ripgrep'sOk(WalkEvent::Dir(ent))withent.path()gave an exact edge to the root package'stests::util::Dir::path.test_dependency_and_same_crate_targets_keep_their_edges: direct and transitive dependencies, an imported type's exact call, and a same-crate guess.test_dev_dependency_and_version_only_workspace_member_keep_their_edges.test_rust_scoped_use_type_paths.py:test_scoped_type_without_the_item_binds_no_other_type(CodeRabbit).test_qualified_declared_type_is_not_rebound_by_a_scoped_use(Greptile), with the negativetest_bare_declared_type_follows_the_scoped_use.origin/main. The full unit suite was not run locally (shared machine); CI runs it.ruff check,ruff format, andty check(All checks passed!) oncodebase_rag.cargo test -p my-alphaandcargo check --tests --workspaceon the repro, and the ripgrep measurement.Sonar follow-up (2c82c48)
_rust_scoped_type(complexity 24 → 2) now handles the missing-caller case and the caller's ownuse, then hands off to_rust_enclosing_scope_type(the innermost-first scope walk) and_rust_scoped_use_type(following ausetarget to a type). Behaviour is unchanged.Checklist
make pre-commit)# type: ignore,cast(),Any, orobjecttype hintsReview follow-ups (be737bb)
self::/super::in an inline mod counted from the file (Greptile 4171480979): fixed._rust_scoped_local_typesnow rebinds a local whose declared type is a path, through_rust_inline_path_type.self::/super::call paths already use.useor child mod.self::/super::path that names no type in that mod binds nothing, rather than the file's type of the same name.crate::paths are unchanged.A renamed workspace dependency lost its edges (Greptile 4171480983): fixed.
package =value, otherwise the key. Hyphens are read as underscores, and{ workspace = true }inherits the root entry, rename included.use alias::Typecalls keep their edges.Red tests (8 failed on ddb3c98):
test_self_path_in_inline_mod_binds_the_mod_type;test_super_path_in_nested_inline_mod_binds_the_parent_mod_type;test_bare_path_in_inline_mod_binds_the_mod_child_type;test_inline_mod_path_to_an_external_type_binds_no_sibling_or_file_type;test_renamed_workspace_member_dependency_keeps_its_edges[version|ws_version];test_version_only_member_named_apart_from_its_lib_keeps_its_edges;test_dependency_renamed_to_a_registry_package_stays_external.Every inline-mod fixture also has a same-named
Builderin a sibling mod, which must never be chosen.Negative tests (green before and after):
test_module_path_without_inline_shadowing_binds_the_file_type;[path]and[ws_path]renamed forms.Results: targeted Rust scope 1022 passed, 3 skipped.
Review follow-ups (7fb0e48)
self::alias::Builderlost its edge (Greptile 4171571325): fixed. Afterself::/super::,_rust_relative_use_path_typereads each middle segment through the mod's own bindings: a child module first, then ausebinding (asaliases included). The last segment is followed through re-exports and globs. A binding that leaves the repo still binds nothing.git,registry,registry-indexorpath.{ workspace = true }is judged by the entry it inherits.gitdependency, an alternate-registry dependency, or apathoutside the repo stays external.[patch.<source>]table binds that member.test_relative_path_through_a_mod_use_binds_its_target_type(self::alias,super::alias,self::a, glob)test_member_named_dependency_from_another_source_stays_external[git_renamed|git_plain|ws_git|alt_registry|path_outside]test_relative_path_through_an_external_alias_binds_no_first_party_typetest_git_dependency_patched_to_the_member_keeps_its_edgestest_dependency_renamed_to_a_registry_package_stays_external[replace]table;[patch]git URLs.Review follow-up (80f4f99)
[patch]produced false local edges (Greptile outside-diff P2): fixed. A path patch now stands in for a dependency only when the member's version satisfies the dependency's requirement, as Cargo does:[package] version, or the root[workspace.package] versionwhen inherited.version, also when inherited through{ workspace = true }.[patch.crates-io]stays external instead of falling back to the name rule.parsers/rs/cargo_semver.pyimplements Cargo requirement matching without a new dependency: caret by default (including the rules below 1.0),~,=, comparison bounds, wildcards and Cargo's pre-release rule.test_root_patch_stands_in_only_for_a_version_it_satisfies[git_incompatible|crates_io_incompatible|inherited_incompatible|member_without_version].[git_compatible|git_no_requirement|crates_io_compatible|inherited_compatible];test_git_dependency_patched_to_the_member_keeps_its_edges;test_rust_cargo_semver.py(53 cases).Review follow-up (dceee0e)
_rust_patch_entrystopped at the first[patch.<source>]entry naming the package, so the result depended on the order of the entries._rust_patch_entriesnow returns every entry that names the package, by key or throughpackage =._rust_patch_targetkeeps the in-repo path entries whose version meets the requirement and picks the highest, as Cargo does.cargo_semver.version_keyis now public and gives the ordering.test_patch_listing_several_versions_uses_the_highest_compatible): the[incompatible_first],[highest_compatible]and[bounded]cases.[compatible_first],[none_compatible]and every earlier patch case still pass.my_base::Meter::newstill resolves through that member and is then dropped by the crate filter. The method-call edges are correct._resolve_imported_class_qndoes not passmodule_qn. That code is inside a fix(rust): resolve bare 2018-edition pub use re-exports to the local module #2599 hunk, so it is left for after fix(rust): resolve bare 2018-edition pub use re-exports to the local module #2599.Review follow-up (530bd16)
_rust_patch_targetno longer drops Git or out-of-repo patch entries before comparing.versionrequirement has an upper bound under the local version (=1.2.0,~1.2,<1.5against 1.5.0). The check is the newcargo_semver.all_below.version, one that may be equal or higher (1.5), or an unbounded one (>=1.2). This matches how an unreadable version is already handled, and avoids exact edges to what may be the wrong crate.versioncannot meet the requirement at all (=2.0.0against "1") also leaves the dependency external, although Cargo would use the local copy.test_patch_from_another_source_wins_unless_certainly_lower):[fork_unversioned](Greptile's case),[fork_higher]and[fork_unbounded].[fork_pinned_lower]and[fork_bounded_lower]still bind the local copy, and every local-only case is unchanged. There are 14 newall_belowunit cases.Review follow-up (4268ade)
versioncan never meet the dependency's requirement is now left out of the comparison, as Cargo leaves it unused.cargo_semver.requirements_disjoint(a, b)returns True only when it can prove there is no common version: the tightest lower bound is above the tightest upper bound, or both sit on the same key and one excludes it. An unbounded or unreadable requirement never counts as disjoint.version, or one that may overlap, still counts, as before.test_patch_from_another_source_wins_unless_ruled_out):[fork_incompatible_exact](Greptile's case:=1.2.0, local 1.2.0, git=2.0.0);[fork_incompatible_major];[fork_incompatible_floor].[fork_unversioned],[fork_higher]and[fork_unbounded]stay external. The pinned-lower, bounded-lower and local-only cases are unchanged. There are 16 newrequirements_disjointunit cases, each also checked with its arguments swapped.🤖 Generated with Claude Code
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