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//===--- FileExtensionsUtils.cpp - clang-tidy -------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "FileExtensionsUtils.h"
#include "clang/Basic/CharInfo.h"
#include "llvm/Support/Path.h"
#include <optional>
namespace clang::tidy::utils {
bool isExpansionLocInHeaderFile(SourceLocation Loc, const SourceManager &SM,
const FileExtensionsSet &HeaderFileExtensions) {
SourceLocation ExpansionLoc = SM.getExpansionLoc(Loc);
return isFileExtension(SM.getFilename(ExpansionLoc), HeaderFileExtensions);
}
bool isPresumedLocInHeaderFile(SourceLocation Loc, SourceManager &SM,
const FileExtensionsSet &HeaderFileExtensions) {
PresumedLoc PresumedLocation = SM.getPresumedLoc(Loc);
return isFileExtension(PresumedLocation.getFilename(), HeaderFileExtensions);
}
bool isSpellingLocInHeaderFile(SourceLocation Loc, SourceManager &SM,
const FileExtensionsSet &HeaderFileExtensions) {
SourceLocation SpellingLoc = SM.getSpellingLoc(Loc);
return isFileExtension(SM.getFilename(SpellingLoc), HeaderFileExtensions);
}
bool parseFileExtensions(StringRef AllFileExtensions,
FileExtensionsSet &FileExtensions,
StringRef Delimiters) {
SmallVector<StringRef, 5> Suffixes;
for (char Delimiter : Delimiters) {
if (AllFileExtensions.contains(Delimiter)) {
AllFileExtensions.split(Suffixes, Delimiter);
break;
}
}
FileExtensions.clear();
for (StringRef Suffix : Suffixes) {
StringRef Extension = Suffix.trim();
if (!llvm::all_of(Extension, isAlphanumeric))
return false;
FileExtensions.insert(Extension);
}
return true;
}
std::optional<StringRef>
getFileExtension(StringRef FileName, const FileExtensionsSet &FileExtensions) {
StringRef Extension = llvm::sys::path::extension(FileName);
if (Extension.empty())
return std::nullopt;
// Skip "." prefix.
if (!FileExtensions.count(Extension.substr(1)))
return std::nullopt;
return Extension;
}
bool isFileExtension(StringRef FileName,
const FileExtensionsSet &FileExtensions) {
return getFileExtension(FileName, FileExtensions).has_value();
}
} // namespace clang::tidy::utils
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