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-rw-r--r--llvm/lib/Support/SpecialCaseList.cpp105
1 files changed, 65 insertions, 40 deletions
diff --git a/llvm/lib/Support/SpecialCaseList.cpp b/llvm/lib/Support/SpecialCaseList.cpp
index f184efa..8ec6b1d 100644
--- a/llvm/lib/Support/SpecialCaseList.cpp
+++ b/llvm/lib/Support/SpecialCaseList.cpp
@@ -30,57 +30,82 @@
namespace llvm {
-Error SpecialCaseList::Matcher::insert(StringRef Pattern, unsigned LineNumber,
- bool UseGlobs) {
+Error SpecialCaseList::RegexMatcher::insert(StringRef Pattern,
+ unsigned LineNumber) {
if (Pattern.empty())
return createStringError(errc::invalid_argument,
- Twine("Supplied ") +
- (UseGlobs ? "glob" : "regex") + " was blank");
-
- if (!UseGlobs) {
- // Replace * with .*
- auto Regexp = Pattern.str();
- for (size_t pos = 0; (pos = Regexp.find('*', pos)) != std::string::npos;
- pos += strlen(".*")) {
- Regexp.replace(pos, strlen("*"), ".*");
- }
+ "Supplied regex was blank");
+
+ // Replace * with .*
+ auto Regexp = Pattern.str();
+ for (size_t pos = 0; (pos = Regexp.find('*', pos)) != std::string::npos;
+ pos += strlen(".*")) {
+ Regexp.replace(pos, strlen("*"), ".*");
+ }
- Regexp = (Twine("^(") + StringRef(Regexp) + ")$").str();
+ Regexp = (Twine("^(") + StringRef(Regexp) + ")$").str();
- // Check that the regexp is valid.
- Regex CheckRE(Regexp);
- std::string REError;
- if (!CheckRE.isValid(REError))
- return createStringError(errc::invalid_argument, REError);
+ // Check that the regexp is valid.
+ Regex CheckRE(Regexp);
+ std::string REError;
+ if (!CheckRE.isValid(REError))
+ return createStringError(errc::invalid_argument, REError);
- auto Rg =
- std::make_unique<Matcher::Reg>(Pattern, LineNumber, std::move(CheckRE));
- RegExes.emplace_back(std::move(Rg));
+ auto Rg = std::make_unique<Reg>(Pattern, LineNumber, std::move(CheckRE));
+ RegExes.emplace_back(std::move(Rg));
- return Error::success();
- }
+ return Error::success();
+}
+
+void SpecialCaseList::RegexMatcher::match(
+ StringRef Query,
+ llvm::function_ref<void(StringRef Rule, unsigned LineNo)> Cb) const {
+ for (const auto &Regex : reverse(RegExes))
+ if (Regex->Rg.match(Query))
+ Cb(Regex->Name, Regex->LineNo);
+}
+
+Error SpecialCaseList::GlobMatcher::insert(StringRef Pattern,
+ unsigned LineNumber) {
+ if (Pattern.empty())
+ return createStringError(errc::invalid_argument, "Supplied glob was blank");
- auto Glob = std::make_unique<Matcher::Glob>(Pattern, LineNumber);
+ auto G = std::make_unique<Glob>(Pattern, LineNumber);
// We must be sure to use the string in `Glob` rather than the provided
// reference which could be destroyed before match() is called
- if (auto Err = GlobPattern::create(Glob->Name, /*MaxSubPatterns=*/1024)
- .moveInto(Glob->Pattern))
+ if (auto Err = GlobPattern::create(G->Name, /*MaxSubPatterns=*/1024)
+ .moveInto(G->Pattern))
return Err;
- Globs.push_back(std::move(Glob));
+ Globs.emplace_back(std::move(G));
return Error::success();
}
-void SpecialCaseList::Matcher::match(
+void SpecialCaseList::GlobMatcher::match(
StringRef Query,
llvm::function_ref<void(StringRef Rule, unsigned LineNo)> Cb) const {
- if (RemoveDotSlash)
- Query = llvm::sys::path::remove_leading_dotslash(Query);
for (const auto &Glob : reverse(Globs))
if (Glob->Pattern.match(Query))
Cb(Glob->Name, Glob->LineNo);
- for (const auto &Regex : reverse(RegExes))
- if (Regex->Rg.match(Query))
- Cb(Regex->Name, Regex->LineNo);
+}
+
+SpecialCaseList::Matcher::Matcher(bool UseGlobs, bool RemoveDotSlash)
+ : RemoveDotSlash(RemoveDotSlash) {
+ if (UseGlobs)
+ M.emplace<GlobMatcher>();
+ else
+ M.emplace<RegexMatcher>();
+}
+
+void SpecialCaseList::Matcher::match(
+ StringRef Query,
+ llvm::function_ref<void(StringRef Rule, unsigned LineNo)> Cb) const {
+ if (RemoveDotSlash)
+ Query = llvm::sys::path::remove_leading_dotslash(Query);
+ return std::visit([&](auto &V) { return V.match(Query, Cb); }, M);
+}
+
+Error SpecialCaseList::Matcher::insert(StringRef Pattern, unsigned LineNumber) {
+ return std::visit([&](auto &V) { return V.insert(Pattern, LineNumber); }, M);
}
// TODO: Refactor this to return Expected<...>
@@ -139,10 +164,10 @@ bool SpecialCaseList::createInternal(const MemoryBuffer *MB,
Expected<SpecialCaseList::Section *>
SpecialCaseList::addSection(StringRef SectionStr, unsigned FileNo,
unsigned LineNo, bool UseGlobs) {
- Sections.emplace_back(SectionStr, FileNo);
+ Sections.emplace_back(SectionStr, FileNo, UseGlobs);
auto &Section = Sections.back();
- if (auto Err = Section.SectionMatcher.insert(SectionStr, LineNo, UseGlobs)) {
+ if (auto Err = Section.SectionMatcher.insert(SectionStr, LineNo)) {
return createStringError(errc::invalid_argument,
"malformed section at line " + Twine(LineNo) +
": '" + SectionStr +
@@ -170,7 +195,7 @@ bool SpecialCaseList::parse(unsigned FileIdx, const MemoryBuffer *MB,
bool RemoveDotSlash = Version > 2;
Section *CurrentSection;
- if (auto Err = addSection("*", FileIdx, 1).moveInto(CurrentSection)) {
+ if (auto Err = addSection("*", FileIdx, 1, true).moveInto(CurrentSection)) {
Error = toString(std::move(Err));
return false;
}
@@ -213,10 +238,10 @@ bool SpecialCaseList::parse(unsigned FileIdx, const MemoryBuffer *MB,
}
auto [Pattern, Category] = Postfix.split("=");
- auto &Entry = CurrentSection->Entries[Prefix][Category];
- Entry.RemoveDotSlash =
- RemoveDotSlash && llvm::is_contained(PathPrefixes, Prefix);
- if (auto Err = Entry.insert(Pattern, LineNo, UseGlobs)) {
+ auto [It, _] = CurrentSection->Entries[Prefix].try_emplace(
+ Category, UseGlobs,
+ RemoveDotSlash && llvm::is_contained(PathPrefixes, Prefix));
+ if (auto Err = It->second.insert(Pattern, LineNo)) {
Error =
(Twine("malformed ") + (UseGlobs ? "glob" : "regex") + " in line " +
Twine(LineNo) + ": '" + Pattern + "': " + toString(std::move(Err)))
generated by cgit v1.1 at 2025-10-17 10:54:08 +0000