RegularExpression.cpp revision 360784 
1//===-- RegularExpression.cpp -----------------------------------*- C++ -*-===//
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
13using namespace lldb_private;
14
15RegularExpression::RegularExpression(llvm::StringRef str)
16    : m_regex_text(str),
17      // m_regex does not reference str anymore after it is constructed.
18      m_regex(llvm::Regex(str)) {}
19
20RegularExpression::RegularExpression(const RegularExpression &rhs)
21    : RegularExpression(rhs.GetText()) {}
22
23bool RegularExpression::Execute(
24    llvm::StringRef str,
25    llvm::SmallVectorImpl<llvm::StringRef> *matches) const {
26  if (!IsValid())
27    return false;
28  return m_regex.match(str, matches);
29}
30
31bool RegularExpression::IsValid() const { return m_regex.isValid(); }
32
33llvm::StringRef RegularExpression::GetText() const { return m_regex_text; }
34
35llvm::Error RegularExpression::GetError() const {
36  std::string error;
37  if (!m_regex.isValid(error))
38    return llvm::make_error<llvm::StringError>(llvm::inconvertibleErrorCode(),
39                                               error);
40  return llvm::Error::success();
41}
42