cppcheck/lib/utils.h

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/*
* Cppcheck - A tool for static C/C++ code analysis
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* Copyright (C) 2007-2021 Cppcheck team.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
//---------------------------------------------------------------------------
#ifndef utilsH
#define utilsH
//---------------------------------------------------------------------------
#include "config.h"
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#include <cstddef>
#include <string>
#include <vector>
struct SelectMapKeys {
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template<class Pair>
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typename Pair::first_type operator()(const Pair& p) const {
return p.first;
}
};
struct SelectMapValues {
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template<class Pair>
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typename Pair::second_type operator()(const Pair& p) const {
return p.second;
}
};
// Enum hash for C++11. This is not needed in C++14
struct EnumClassHash {
template<typename T>
std::size_t operator()(T t) const
{
return static_cast<std::size_t>(t);
}
};
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inline bool endsWith(const std::string &str, char c)
{
return !str.empty() && str.back() == c;
}
inline bool endsWith(const std::string &str, const char end[], std::size_t endlen)
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{
return (str.size() >= endlen) && (str.compare(str.size()-endlen, endlen, end)==0);
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}
template<std::size_t N>
bool endsWith(const std::string& str, const char (&end)[N])
{
return endsWith(str, end, N - 1);
}
inline static bool isPrefixStringCharLiteral(const std::string &str, char q, const std::string& p)
{
if (!endsWith(str, q))
return false;
if ((str.length() + 1) > p.length() && (str.compare(0, p.size() + 1, p + q) == 0))
return true;
return false;
}
inline static bool isStringCharLiteral(const std::string &str, char q)
{
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static const std::vector<std::string> suffixes{"", "u8", "u", "U", "L"};
for (const std::string & p: suffixes) {
if (isPrefixStringCharLiteral(str, q, p))
return true;
}
return false;
}
inline static bool isStringLiteral(const std::string &str)
{
return isStringCharLiteral(str, '"');
}
inline static bool isCharLiteral(const std::string &str)
{
return isStringCharLiteral(str, '\'');
}
inline static std::string getStringCharLiteral(const std::string &str, char q)
{
const std::size_t quotePos = str.find(q);
return str.substr(quotePos + 1U, str.size() - quotePos - 2U);
}
inline static std::string getStringLiteral(const std::string &str)
{
if (isStringLiteral(str))
return getStringCharLiteral(str, '"');
return "";
}
inline static std::string getCharLiteral(const std::string &str)
{
if (isCharLiteral(str))
return getStringCharLiteral(str, '\'');
return "";
}
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inline static const char *getOrdinalText(int i)
{
if (i == 1)
return "st";
if (i == 2)
return "nd";
if (i == 3)
return "rd";
return "th";
}
CPPCHECKLIB int caseInsensitiveStringCompare(const std::string& lhs, const std::string& rhs);
CPPCHECKLIB bool isValidGlobPattern(const std::string& pattern);
CPPCHECKLIB bool matchglob(const std::string& pattern, const std::string& name);
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#define UNUSED(x) (void)(x)
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// Use the nonneg macro when you want to assert that a variable/argument is not negative
#ifdef __CPPCHECK__
#define nonneg __cppcheck_low__(0)
#elif defined(NONNEG)
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// Enable non-negative values checking
// TODO : investigate using annotations/contracts for stronger value checking
#define nonneg unsigned
#else
// Disable non-negative values checking
#define nonneg
#endif
#if defined(__has_feature)
#if __has_feature(address_sanitizer)
#define ASAN 1
#endif
#endif
#ifndef ASAN
#ifdef __SANITIZE_ADDRESS__
#define ASAN 1
#else
#define ASAN 0
#endif
#endif
#endif