200 lines
8.2 KiB
Python
Executable File
200 lines
8.2 KiB
Python
Executable File
#!/usr/bin/env python3
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# file: scripts/audit_rust_export_completeness.py
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# version: 1
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"""Audit crate-root export completeness and canonical same-crate paths."""
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from __future__ import annotations
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import argparse
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import dataclasses
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import pathlib
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import re
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import sys
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from audit_rust_general_rules import line_depths, mask_rust_source
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@dataclasses.dataclass(frozen=True)
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class Candidate:
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"""One export/path normalization candidate."""
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code: str
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path: str
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line: int
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message: str
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@dataclasses.dataclass(frozen=True)
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class Declaration:
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"""One module-level public or crate-public declaration."""
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module: str
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name: str
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visibility: str
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path: pathlib.Path
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line: int
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def crate_roots(root: pathlib.Path) -> list[pathlib.Path]:
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"""Return Rust workspace crate directories under crates/."""
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crates: list[pathlib.Path] = []
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for manifest in (root / "crates").glob("*/Cargo.toml"):
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crate = manifest.parent
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if (crate / "src/lib.rs").is_file() or (crate / "src/main.rs").is_file():
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crates.append(crate)
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return sorted(crates)
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def module_path(crate: pathlib.Path, path: pathlib.Path) -> str:
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"""Return the Rust module path represented by a source file."""
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relative = path.relative_to(crate / "src").with_suffix("")
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return "::".join(relative.parts)
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def declaration_candidates(crate: pathlib.Path, path: pathlib.Path) -> list[Declaration]:
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"""Return module-level public declarations from one source module."""
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text = path.read_text(encoding="utf-8")
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lines = text.splitlines()
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depths = line_depths(mask_rust_source(text))
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found: list[Declaration] = []
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pattern = re.compile(
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r"^\s*(pub(?:\(crate\))?)\s+(?:(?:async|unsafe|const)\s+)*(?:const|static|type|struct|enum|trait|union|fn)\s+([A-Za-z_][A-Za-z0-9_]*)"
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)
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for idx, line in enumerate(lines, 1):
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if depths[idx - 1] != 0:
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continue
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match = pattern.match(line)
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if match is not None:
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found.append(Declaration(module_path(crate, path), match.group(2), match.group(1), path, idx))
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return found
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def root_exports(crate: pathlib.Path) -> dict[tuple[str, str], str]:
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"""Return explicit crate-root re-exports keyed by source module and symbol."""
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crate_root = crate / "src/lib.rs"
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if not crate_root.is_file():
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crate_root = crate / "src/main.rs"
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exports: dict[tuple[str, str], str] = {}
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if not crate_root.is_file():
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return exports
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pattern = re.compile(
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r"^pub(?:\(crate\))?\s+use\s+self::([A-Za-z_][A-Za-z0-9_:]*)::([A-Za-z_][A-Za-z0-9_]*)\s*;",
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re.MULTILINE,
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)
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for match in pattern.finditer(crate_root.read_text(encoding="utf-8")):
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exports[(match.group(1), match.group(2))] = match.group(2)
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return exports
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def unit_test_parents(crate: pathlib.Path) -> dict[pathlib.Path, pathlib.Path]:
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"""Map separated unit-test files to the production module that owns them."""
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mapping: dict[pathlib.Path, pathlib.Path] = {}
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pattern = re.compile(r'#\[path\s*=\s*"\.\./unit_tests/([^\"]+)"\]')
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for source in sorted((crate / "src").rglob("*.rs")):
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for match in pattern.finditer(source.read_text(encoding="utf-8")):
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test = crate / "unit_tests" / match.group(1)
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if test.is_file():
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mapping[test.resolve()] = source.resolve()
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return mapping
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def external_usage(crate: pathlib.Path, declaration: Declaration, test_parents: dict[pathlib.Path, pathlib.Path]) -> bool:
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"""Return whether a crate-public item is referenced outside its declaration module."""
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direct = f"crate::{declaration.module}::{declaration.name}"
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root_direct = f"crate::{declaration.name}"
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super_ref = f"super::{declaration.name}"
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for path in sorted(crate.rglob("*.rs")):
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if "target" in path.parts:
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continue
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resolved = path.resolve()
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if resolved == declaration.path.resolve():
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continue
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text = path.read_text(encoding="utf-8")
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if direct in text or root_direct in text:
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return True
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if test_parents.get(resolved) == declaration.path.resolve() and super_ref in text:
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return True
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return False
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def audit_crate(workspace: pathlib.Path, crate: pathlib.Path) -> list[Candidate]:
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"""Audit one crate for export completeness and canonical paths."""
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crate_root = crate / "src/lib.rs"
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if not crate_root.is_file():
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crate_root = crate / "src/main.rs"
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exports = root_exports(crate)
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tests = unit_test_parents(crate)
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declarations: dict[tuple[str, str], Declaration] = {}
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candidates: list[Candidate] = []
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for path in sorted((crate / "src").rglob("*.rs")):
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if path == crate_root:
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continue
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for declaration in declaration_candidates(crate, path):
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key = (declaration.module, declaration.name)
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declarations[key] = declaration
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required = declaration.visibility == "pub" or external_usage(crate, declaration, tests)
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if required and key not in exports:
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relative = path.relative_to(workspace).as_posix()
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reason = "public item" if declaration.visibility == "pub" else "crate-public item used outside its module"
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candidates.append(Candidate("RUST-API-201", relative, declaration.line, f"{reason} `{declaration.name}` requires a crate-root re-export"))
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# Canonical crate::Item paths for exported items.
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long_path = re.compile(r"\bcrate::([A-Za-z_][A-Za-z0-9_:]*)::([A-Za-z_][A-Za-z0-9_]*)")
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for path in sorted(crate.rglob("*.rs")):
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if "target" in path.parts or path == crate_root:
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continue
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relative = path.relative_to(workspace).as_posix()
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for idx, line in enumerate(path.read_text(encoding="utf-8").splitlines(), 1):
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for match in long_path.finditer(line):
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alias = exports.get((match.group(1), match.group(2)))
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if alias is not None:
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candidates.append(Candidate("RUST-IMPORT-201", relative, idx, f"long internal path `crate::{match.group(1)}::{match.group(2)}` must use `crate::{alias}`"))
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# `super::Item` is reserved to strictly private parent items in separated unit tests.
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declarations_by_source: dict[pathlib.Path, dict[str, Declaration]] = {}
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for declaration in declarations.values():
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declarations_by_source.setdefault(declaration.path.resolve(), {})[declaration.name] = declaration
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super_pattern = re.compile(r"\bsuper::([A-Za-z_][A-Za-z0-9_]*)")
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for test, parent in tests.items():
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parent_declarations = declarations_by_source.get(parent, {})
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relative = test.relative_to(workspace).as_posix()
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for idx, line in enumerate(test.read_text(encoding="utf-8").splitlines(), 1):
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for match in super_pattern.finditer(line):
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declaration = parent_declarations.get(match.group(1))
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if declaration is not None and declaration.visibility in {"pub", "pub(crate)"}:
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candidates.append(Candidate("RUST-IMPORT-202", relative, idx, f"`super::{declaration.name}` targets {declaration.visibility}; use crate-root `crate::{declaration.name}`"))
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return candidates
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def main() -> int:
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"""Run the export-completeness audit."""
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parser = argparse.ArgumentParser()
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parser.add_argument("--root", default=".")
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parser.add_argument("--report-only", action="store_true")
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parser.add_argument("--summary-only", action="store_true")
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arguments = parser.parse_args()
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workspace = pathlib.Path(arguments.root).resolve()
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candidates = [item for crate in crate_roots(workspace) for item in audit_crate(workspace, crate)]
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candidates.sort(key=lambda item: (item.code, item.path, item.line, item.message))
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counts: dict[str, int] = {}
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for item in candidates:
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counts[item.code] = counts.get(item.code, 0) + 1
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sys.stdout.write(f"Rust export completeness audit: {len(candidates)} candidate(s)\n")
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for code in sorted(counts):
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sys.stdout.write(f"{code}: {counts[code]}\n")
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if not arguments.summary_only:
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for item in candidates:
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sys.stdout.write(f"{item.code} {item.path}:{item.line}: {item.message}\n")
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return 0 if arguments.report_only or not candidates else 1
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if __name__ == "__main__":
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raise SystemExit(main())
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