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//===-- MIUtilParse.h ------------------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#pragma once
// Third party headers:
#include "../lib/Support/regex_impl.h"
// In-house headers:
#include "MIUtilString.h"
namespace MIUtilParse {
//++
//============================================================================
// Details: MI common code utility class. Used to parse the output
// returned from lldb commands using regex.
//--
class CRegexParser {
public:
// Helper class for keeping track of regex matches.
class Match {
friend CRegexParser;
public:
/* ctor */ explicit Match(size_t nmatches)
: m_matchStrs(nmatches), m_maxMatches(nmatches) {}
size_t GetMatchCount() const { return m_matchStrs.size(); }
CMIUtilString GetMatchAtIndex(size_t i) const {
if (m_matchStrs.size() > i)
return m_matchStrs[i];
return CMIUtilString();
}
private:
CMIUtilString::VecString_t m_matchStrs;
const size_t m_maxMatches;
};
// Methods:
// Compile the regular expression.
/* ctor */ explicit CRegexParser(const char *regexStr);
// Free the memory used by the regular expression.
/* dtor */ ~CRegexParser();
// No copies
CRegexParser(const CRegexParser &) = delete;
void operator=(CRegexParser &) = delete;
// Return the match at the index.
int GetMatchCount(const Match &match) const {
if (m_isValid)
return match.GetMatchCount();
return 0;
}
bool IsValid() const { return m_isValid; }
// Match the input against the regular expression. Return an error
// if the number of matches is less than minMatches. If the default
// minMatches value of 0 is passed, an error will be returned if
// the number of matches is less than the maxMatches value used to
// initialize Match.
bool Execute(const char *input, Match &match, size_t minMatches = 0);
private:
llvm_regex_t m_emma;
const bool m_isValid;
};
}
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