================ @@ -0,0 +1,183 @@ +//===----------------------------------------------------------------------===// +// +// 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 "FormatvStringCheck.h" +#include "../utils/OptionsUtils.h" +#include "clang/AST/DeclTemplate.h" +#include "clang/AST/Expr.h" +#include "clang/ASTMatchers/ASTMatchers.h" +#include "llvm/ADT/SmallBitVector.h" +#include "llvm/ADT/SmallVector.h" +#include "llvm/Support/Error.h" +#include <vector> + +using namespace clang::ast_matchers; + +namespace clang::tidy::llvm_check { + +namespace { + +struct ParseResult { + SmallVector<unsigned, 4> Indices; + unsigned MaxIndex = 0; +}; + +} // namespace + +static Expected<ParseResult> parseFormatvString(StringRef Fmt) { + ParseResult Result; + unsigned NextAutoIndex = 0; + bool HasAutomatic = false; + bool HasExplicit = false; + + while (!Fmt.empty()) { + const size_t OpenBrace = Fmt.find('{'); + if (OpenBrace == StringRef::npos) + break; + + Fmt = Fmt.drop_front(OpenBrace); + + // Handle escaped braces '{{'. + if (Fmt.size() > 1 && Fmt[1] == '{') { + Fmt = Fmt.drop_front(2); + continue; + } + + // Find the closing '}'. + const size_t CloseBrace = Fmt.find('}'); + if (CloseBrace == StringRef::npos) + return llvm::createStringError("unterminated brace in format string"); + + // Extract the content between braces. + const StringRef Content = Fmt.substr(1, CloseBrace - 1); + Fmt = Fmt.drop_front(CloseBrace + 1); + + // Parse the replacement field: [index] ["," layout] [":" format] + // Strip the format part first, since it may contain commas (e.g. {0:$[,]}). + StringRef IndexStr = Content; + + const size_t ColonPos = Content.find(':'); + if (ColonPos != StringRef::npos) + IndexStr = Content.substr(0, ColonPos); + + const size_t CommaPos = IndexStr.find(','); + if (CommaPos != StringRef::npos) + IndexStr = IndexStr.substr(0, CommaPos); ---------------- kastiglione wrote:
looks good https://github.com/llvm/llvm-project/pull/195974 _______________________________________________ cfe-commits mailing list [email protected] https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
