modify harness framework

Codex/Coding/harness framework cpp/scripts/msvc_harness/discovery.py

@@ -1,7 +1,7 @@
 from pathlib import Path
 
 from .models import DiscoveryResult, HarnessConfig, ProjectKind, ProjectSelection
-from .tdd_policy import find_cpp_files
+from .tdd_policy import has_cpp_files
 
 
 class DiscoveryError(RuntimeError):
@@ -68,8 +68,7 @@ def discover_project(root: Path, config: HarnessConfig) -> DiscoveryResult:
             ProjectSelection(ProjectKind.MSBUILD, projects[0])
         )
 
-    cpp_files = find_cpp_files(root)
-    if cpp_files:
+    if has_cpp_files(root):
         raise DiscoveryError(
             "C/C++ files exist but no CMakeLists.txt, preset, .sln, or .vcxproj "
             "was found; configure projectType and project path"

Codex/Coding/harness framework cpp/scripts/msvc_harness/tdd_policy.py

@@ -1,5 +1,7 @@
+import os
 from fnmatch import fnmatch
 from pathlib import Path
+from typing import Iterator
 
 CPP_SUFFIXES = frozenset({".c", ".cc", ".cpp", ".cxx", ".h", ".hpp", ".hxx"})
 DEFAULT_EXCLUDES = (
@@ -22,18 +24,70 @@ def is_excluded_path(path: Path, root: Path, extra: tuple[str, ...] = ()) -> boo
     return any(fnmatch(relative, pattern) for pattern in DEFAULT_EXCLUDES + extra)
 
 
+def _fully_excluded_directory(
+    path: Path,
+    root: Path,
+    patterns: tuple[str, ...],
+) -> bool:
+    try:
+        relative = path.resolve().relative_to(root).as_posix()
+    except ValueError:
+        return False
+    for pattern in patterns:
+        for suffix in ("/**", "\\**"):
+            if pattern.endswith(suffix) and fnmatch(relative, pattern[:-3]):
+                return True
+    return False
+
+
+def _iter_files(
+    root: Path,
+    pruned_patterns: tuple[str, ...] = (),
+) -> Iterator[Path]:
+    for current, directories, files in os.walk(root, followlinks=False):
+        current_path = Path(current)
+        if pruned_patterns:
+            directories[:] = [
+                name
+                for name in directories
+                if not _fully_excluded_directory(
+                    current_path / name,
+                    root,
+                    pruned_patterns,
+                )
+            ]
+        for name in files:
+            path = current_path / name
+            if path.is_file():
+                yield path
+
+
+def _iter_cpp_files(
+    root: Path,
+    extra_excludes: tuple[str, ...] = (),
+) -> Iterator[Path]:
+    root = root.resolve()
+    excludes = DEFAULT_EXCLUDES + extra_excludes
+    for path in _iter_files(root, excludes):
+        if (
+            path.suffix.lower() in CPP_SUFFIXES
+            and not is_excluded_path(path, root, extra_excludes)
+        ):
+            yield path
+
+
 def find_cpp_files(
     root: Path,
     extra_excludes: tuple[str, ...] = (),
 ) -> tuple[Path, ...]:
-    found = (
-        path
-        for path in root.resolve().rglob("*")
-        if path.is_file()
-        and path.suffix.lower() in CPP_SUFFIXES
-        and not is_excluded_path(path, root, extra_excludes)
-    )
-    return tuple(sorted(found))
+    return tuple(sorted(_iter_cpp_files(root, extra_excludes)))
+
+
+def has_cpp_files(
+    root: Path,
+    extra_excludes: tuple[str, ...] = (),
+) -> bool:
+    return next(_iter_cpp_files(root, extra_excludes), None) is not None
 
 
 def is_test_file(path: Path, root: Path, config) -> bool:
@@ -47,7 +101,60 @@ def is_test_file(path: Path, root: Path, config) -> bool:
     return stem.startswith("test_") or stem.endswith(("_test", "_tests", ".test"))
 
 
-def matching_test_exists(path: Path, config) -> bool:
+def _is_simple_filename_pattern(pattern: str) -> bool:
+    pattern_path = Path(pattern)
+    return (
+        not pattern_path.is_absolute()
+        and len(pattern_path.parts) == 1
+        and pattern == pattern_path.name
+        and "**" not in pattern
+        and not pattern.endswith(("/", "\\"))
+    )
+
+
+class _TestFileIndex:
+    def __init__(self) -> None:
+        self._roots: dict[Path, Path] = {}
+        self._files: dict[Path, list[Path]] = {}
+        self._iterators: dict[Path, Iterator[Path]] = {}
+        self._exhausted: set[Path] = set()
+        self._path_matches: dict[tuple[Path, str], bool] = {}
+
+    def _path_pattern_match(
+        self,
+        key: Path,
+        root: Path,
+        pattern: str,
+    ) -> bool:
+        cache_key = (key, pattern)
+        if cache_key not in self._path_matches:
+            self._path_matches[cache_key] = any(
+                candidate.is_file() for candidate in root.rglob(pattern)
+            )
+        return self._path_matches[cache_key]
+
+    def matching_file_exists(self, root: Path, pattern: str) -> bool:
+        key = root.resolve()
+        traversal_root = self._roots.setdefault(key, root.absolute())
+        if not _is_simple_filename_pattern(pattern):
+            return self._path_pattern_match(key, traversal_root, pattern)
+
+        files = self._files.setdefault(key, [])
+        if any(fnmatch(path.name, pattern) for path in files):
+            return True
+        if key in self._exhausted:
+            return False
+
+        iterator = self._iterators.setdefault(key, _iter_files(traversal_root))
+        for path in iterator:
+            files.append(path)
+            if fnmatch(path.name, pattern):
+                return True
+        self._exhausted.add(key)
+        return False
+
+
+def _matching_test_exists(path: Path, config, index: _TestFileIndex) -> bool:
     names = tuple(pattern.format(stem=path.stem) for pattern in config.test_patterns)
     roots = (
         *config.test_roots,
@@ -58,13 +165,18 @@ def matching_test_exists(path: Path, config) -> bool:
         if not root.is_dir():
             continue
         for name in names:
-            if any(candidate.is_file() for candidate in root.rglob(name)):
+            if index.matching_file_exists(root, name):
                 return True
     return False
 
 
+def matching_test_exists(path: Path, config) -> bool:
+    return _matching_test_exists(path, config, _TestFileIndex())
+
+
 def evaluate_paths(paths, root: Path, config) -> str | None:
     root = root.resolve()
+    test_files = _TestFileIndex()
     for raw in paths:
         path = raw.resolve()
         try:
@@ -79,7 +191,7 @@ def evaluate_paths(paths, root: Path, config) -> str | None:
             or is_test_file(path, root, config)
         ):
             continue
-        if not matching_test_exists(path, config):
+        if not _matching_test_exists(path, config, test_files):
             expected = config.test_patterns[0].format(stem=path.stem)
             return (
                 f"TDD GUARD: '{path.name}' requires an existing test such as "