lldb/source/Utility/RegularExpression.cpp

   1 //===-- RegularExpression.cpp ---------------------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #include "lldb/Utility/RegularExpression.h"
  10
  11 #include <string>
  12
  13 using namespace lldb_private;
  14
  15 RegularExpression::RegularExpression(llvm::StringRef str,
  16                                      llvm::Regex::RegexFlags flags)
  17     : m_regex_text(std::string(str)),
  18       // m_regex does not reference str anymore after it is constructed.
  19       m_regex(llvm::Regex(str, flags)) {}
  20
  21 RegularExpression::RegularExpression(const RegularExpression &rhs)
  22     : RegularExpression(rhs.GetText()) {}
  23
  24 bool RegularExpression::Execute(
  25     llvm::StringRef str,
  26     llvm::SmallVectorImpl<llvm::StringRef> *matches) const {
  27   if (!IsValid())
  28     return false;
  29   return m_regex.match(str, matches);
  30 }
  31
  32 bool RegularExpression::IsValid() const { return m_regex.isValid(); }
  33
  34 llvm::StringRef RegularExpression::GetText() const { return m_regex_text; }
  35
  36 llvm::Error RegularExpression::GetError() const {
  37   std::string error;
  38   if (!m_regex.isValid(error))
  39     return llvm::make_error<llvm::StringError>(error,
  40                                                llvm::inconvertibleErrorCode());
  41   return llvm::Error::success();
  42 }