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authorvitalyisaev <vitalyisaev@yandex-team.com>2023-06-29 10:00:50 +0300
committervitalyisaev <vitalyisaev@yandex-team.com>2023-06-29 10:00:50 +0300
commit6ffe9e53658409f212834330e13564e4952558f6 (patch)
tree85b1e00183517648b228aafa7c8fb07f5276f419 /contrib/libs/clang14/tools/extra/clang-tidy/modernize/RawStringLiteralCheck.cpp
parent726057070f9c5a91fc10fde0d5024913d10f1ab9 (diff)
downloadydb-6ffe9e53658409f212834330e13564e4952558f6.tar.gz
YQ Connector: support managed ClickHouse
Со стороны dqrun можно обратиться к инстансу коннектора, который работает на streaming стенде, и извлечь данные из облачного CH.
Diffstat (limited to 'contrib/libs/clang14/tools/extra/clang-tidy/modernize/RawStringLiteralCheck.cpp')
-rw-r--r--contrib/libs/clang14/tools/extra/clang-tidy/modernize/RawStringLiteralCheck.cpp152
1 files changed, 152 insertions, 0 deletions
diff --git a/contrib/libs/clang14/tools/extra/clang-tidy/modernize/RawStringLiteralCheck.cpp b/contrib/libs/clang14/tools/extra/clang-tidy/modernize/RawStringLiteralCheck.cpp
new file mode 100644
index 0000000000..40dda98b1e
--- /dev/null
+++ b/contrib/libs/clang14/tools/extra/clang-tidy/modernize/RawStringLiteralCheck.cpp
@@ -0,0 +1,152 @@
+//===--- RawStringLiteralCheck.cpp - clang-tidy----------------------------===//
+//
+// 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 "RawStringLiteralCheck.h"
+#include "clang/AST/ASTContext.h"
+#include "clang/ASTMatchers/ASTMatchFinder.h"
+#include "clang/Lex/Lexer.h"
+
+using namespace clang::ast_matchers;
+
+namespace clang {
+namespace tidy {
+namespace modernize {
+
+namespace {
+
+bool containsEscapes(StringRef HayStack, StringRef Escapes) {
+ size_t BackSlash = HayStack.find('\\');
+ if (BackSlash == StringRef::npos)
+ return false;
+
+ while (BackSlash != StringRef::npos) {
+ if (!Escapes.contains(HayStack[BackSlash + 1]))
+ return false;
+ BackSlash = HayStack.find('\\', BackSlash + 2);
+ }
+
+ return true;
+}
+
+bool isRawStringLiteral(StringRef Text) {
+ // Already a raw string literal if R comes before ".
+ const size_t QuotePos = Text.find('"');
+ assert(QuotePos != StringRef::npos);
+ return (QuotePos > 0) && (Text[QuotePos - 1] == 'R');
+}
+
+bool containsEscapedCharacters(const MatchFinder::MatchResult &Result,
+ const StringLiteral *Literal,
+ const CharsBitSet &DisallowedChars) {
+ // FIXME: Handle L"", u8"", u"" and U"" literals.
+ if (!Literal->isAscii())
+ return false;
+
+ for (const unsigned char C : Literal->getBytes())
+ if (DisallowedChars.test(C))
+ return false;
+
+ CharSourceRange CharRange = Lexer::makeFileCharRange(
+ CharSourceRange::getTokenRange(Literal->getSourceRange()),
+ *Result.SourceManager, Result.Context->getLangOpts());
+ StringRef Text = Lexer::getSourceText(CharRange, *Result.SourceManager,
+ Result.Context->getLangOpts());
+ if (Text.empty() || isRawStringLiteral(Text))
+ return false;
+
+ return containsEscapes(Text, R"('\"?x01)");
+}
+
+bool containsDelimiter(StringRef Bytes, const std::string &Delimiter) {
+ return Bytes.find(Delimiter.empty()
+ ? std::string(R"lit()")lit")
+ : (")" + Delimiter + R"(")")) != StringRef::npos;
+}
+
+std::string asRawStringLiteral(const StringLiteral *Literal,
+ const std::string &DelimiterStem) {
+ const StringRef Bytes = Literal->getBytes();
+ std::string Delimiter;
+ for (int I = 0; containsDelimiter(Bytes, Delimiter); ++I) {
+ Delimiter = (I == 0) ? DelimiterStem : DelimiterStem + std::to_string(I);
+ }
+
+ if (Delimiter.empty())
+ return (R"(R"()" + Bytes + R"lit()")lit").str();
+
+ return (R"(R")" + Delimiter + "(" + Bytes + ")" + Delimiter + R"(")").str();
+}
+
+} // namespace
+
+RawStringLiteralCheck::RawStringLiteralCheck(StringRef Name,
+ ClangTidyContext *Context)
+ : ClangTidyCheck(Name, Context),
+ DelimiterStem(Options.get("DelimiterStem", "lit")),
+ ReplaceShorterLiterals(Options.get("ReplaceShorterLiterals", false)) {
+ // Non-printing characters are disallowed:
+ // \007 = \a bell
+ // \010 = \b backspace
+ // \011 = \t horizontal tab
+ // \012 = \n new line
+ // \013 = \v vertical tab
+ // \014 = \f form feed
+ // \015 = \r carriage return
+ // \177 = delete
+ for (const unsigned char C : StringRef("\000\001\002\003\004\005\006\a"
+ "\b\t\n\v\f\r\016\017"
+ "\020\021\022\023\024\025\026\027"
+ "\030\031\032\033\034\035\036\037"
+ "\177",
+ 33))
+ DisallowedChars.set(C);
+
+ // Non-ASCII are disallowed too.
+ for (unsigned int C = 0x80u; C <= 0xFFu; ++C)
+ DisallowedChars.set(static_cast<unsigned char>(C));
+}
+
+void RawStringLiteralCheck::storeOptions(ClangTidyOptions::OptionMap &Opts) {
+ Options.store(Opts, "DelimiterStem", DelimiterStem);
+ Options.store(Opts, "ReplaceShorterLiterals", ReplaceShorterLiterals);
+}
+
+void RawStringLiteralCheck::registerMatchers(MatchFinder *Finder) {
+ Finder->addMatcher(
+ stringLiteral(unless(hasParent(predefinedExpr()))).bind("lit"), this);
+}
+
+void RawStringLiteralCheck::check(const MatchFinder::MatchResult &Result) {
+ const auto *Literal = Result.Nodes.getNodeAs<StringLiteral>("lit");
+ if (Literal->getBeginLoc().isMacroID())
+ return;
+
+ if (containsEscapedCharacters(Result, Literal, DisallowedChars)) {
+ std::string Replacement = asRawStringLiteral(Literal, DelimiterStem);
+ if (ReplaceShorterLiterals ||
+ Replacement.length() <=
+ Lexer::MeasureTokenLength(Literal->getBeginLoc(),
+ *Result.SourceManager, getLangOpts()))
+ replaceWithRawStringLiteral(Result, Literal, Replacement);
+ }
+}
+
+void RawStringLiteralCheck::replaceWithRawStringLiteral(
+ const MatchFinder::MatchResult &Result, const StringLiteral *Literal,
+ StringRef Replacement) {
+ CharSourceRange CharRange = Lexer::makeFileCharRange(
+ CharSourceRange::getTokenRange(Literal->getSourceRange()),
+ *Result.SourceManager, getLangOpts());
+ diag(Literal->getBeginLoc(),
+ "escaped string literal can be written as a raw string literal")
+ << FixItHint::CreateReplacement(CharRange, Replacement);
+}
+
+} // namespace modernize
+} // namespace tidy
+} // namespace clang