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[clang-apply-replacements] Deduplicate Implementation of collectReplacementsFromDirectory (NFC) (#78630)

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* Convert `collectReplacementsFromDirectory` into a function template.
* Employ explicit specialization to maintain implementation in the
source file.
* Utilize the function template in the source file to eliminate code
duplication.
* Update the documentation for the function.
This commit is contained in:
Daniil Dudkin 2024-01-19 15:57:02 +03:00 committed by GitHub
parent b4f24be7ef
commit 24e5229230
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GPG Key ID: B5690EEEBB952194
2 changed files with 28 additions and 45 deletions
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14
clang-tools-extra/clang-apply-replacements/include/clang-apply-replacements/Tooling/ApplyReplacements.h
View File

@ -51,19 +51,27 @@ using FileToChangesMap =
/// Directories starting with '.' are ignored during traversal.
///
/// \param[in] Directory Directory to begin search for serialized
/// TranslationUnitReplacements.
/// TranslationUnitReplacements or TranslationUnitDiagnostics.
/// \param[out] TUs Collection of all found and deserialized
/// TranslationUnitReplacements or TranslationUnitDiagnostics.
/// \param[out] TUFiles Collection of all TranslationUnitReplacement files
/// found in \c Directory.
/// \param[out] TUFiles Collection of all TranslationUnitReplacement or
/// TranslationUnitDiagnostics files found in \c Directory.
/// \param[in] Diagnostics DiagnosticsEngine used for error output.
///
/// \returns An error_code indicating success or failure in navigating the
/// directory structure.
template <typename TranslationUnits>
std::error_code collectReplacementsFromDirectory(
const llvm::StringRef Directory, TranslationUnits &TUs,
TUReplacementFiles &TUFiles,
clang::DiagnosticsEngine &Diagnostics) = delete;
template <>
std::error_code collectReplacementsFromDirectory(
const llvm::StringRef Directory, TUReplacements &TUs,
TUReplacementFiles &TUFiles, clang::DiagnosticsEngine &Diagnostics);
template <>
std::error_code collectReplacementsFromDirectory(
const llvm::StringRef Directory, TUDiagnostics &TUs,
TUReplacementFiles &TUFiles, clang::DiagnosticsEngine &Diagnostics);

59
clang-tools-extra/clang-apply-replacements/lib/Tooling/ApplyReplacements.cpp
View File

@ -38,8 +38,10 @@ static void eatDiagnostics(const SMDiagnostic &, void *) {}
namespace clang {
namespace replace {
std::error_code collectReplacementsFromDirectory(
const llvm::StringRef Directory, TUReplacements &TUs,
namespace detail {
template <typename TranslationUnits>
static std::error_code collectReplacementsFromDirectory(
const llvm::StringRef Directory, TranslationUnits &TUs,
TUReplacementFiles &TUFiles, clang::DiagnosticsEngine &Diagnostics) {
using namespace llvm::sys::fs;
using namespace llvm::sys::path;
@ -68,7 +70,7 @@ std::error_code collectReplacementsFromDirectory(
}
yaml::Input YIn(Out.get()->getBuffer(), nullptr, &eatDiagnostics);
tooling::TranslationUnitReplacements TU;
typename TranslationUnits::value_type TU;
YIn >> TU;
if (YIn.error()) {
// File doesn't appear to be a header change description. Ignore it.
@ -81,49 +83,22 @@ std::error_code collectReplacementsFromDirectory(
return ErrorCode;
}
} // namespace detail
template <>
std::error_code collectReplacementsFromDirectory(
const llvm::StringRef Directory, TUReplacements &TUs,
TUReplacementFiles &TUFiles, clang::DiagnosticsEngine &Diagnostics) {
return detail::collectReplacementsFromDirectory(Directory, TUs, TUFiles,
Diagnostics);
}
template <>
std::error_code collectReplacementsFromDirectory(
const llvm::StringRef Directory, TUDiagnostics &TUs,
TUReplacementFiles &TUFiles, clang::DiagnosticsEngine &Diagnostics) {
using namespace llvm::sys::fs;
using namespace llvm::sys::path;
std::error_code ErrorCode;
for (recursive_directory_iterator I(Directory, ErrorCode), E;
I != E && !ErrorCode; I.increment(ErrorCode)) {
if (filename(I->path())[0] == '.') {
// Indicate not to descend into directories beginning with '.'
I.no_push();
continue;
}
if (extension(I->path()) != ".yaml")
continue;
TUFiles.push_back(I->path());
ErrorOr<std::unique_ptr<MemoryBuffer>> Out =
MemoryBuffer::getFile(I->path());
if (std::error_code BufferError = Out.getError()) {
errs() << "Error reading " << I->path() << ": " << BufferError.message()
<< "\n";
continue;
}
yaml::Input YIn(Out.get()->getBuffer(), nullptr, &eatDiagnostics);
tooling::TranslationUnitDiagnostics TU;
YIn >> TU;
if (YIn.error()) {
// File doesn't appear to be a header change description. Ignore it.
continue;
}
// Only keep files that properly parse.
TUs.push_back(TU);
}
return ErrorCode;
return detail::collectReplacementsFromDirectory(Directory, TUs, TUFiles,
Diagnostics);
}
/// Extract replacements from collected TranslationUnitReplacements and