cppcheck/test/helpers.h

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/*
* Cppcheck - A tool for static C/C++ code analysis
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* Copyright (C) 2007-2023 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 helpersH
#define helpersH
#include "settings.h"
#include "tokenize.h"
#include "tokenlist.h"
#include <cstddef>
#include <sstream> // IWYU pragma: keep
#include <string>
#include <vector>
class Token;
class Preprocessor;
class Suppressions;
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class givenACodeSampleToTokenize {
private:
Tokenizer tokenizer;
const Settings settings;
public:
explicit givenACodeSampleToTokenize(const char sample[], bool createOnly = false, bool cpp = true)
: tokenizer(&settings, nullptr) {
std::istringstream iss(sample);
if (createOnly)
tokenizer.list.createTokens(iss, cpp ? "test.cpp" : "test.c");
else
tokenizer.tokenize(iss, cpp ? "test.cpp" : "test.c");
}
Token* tokens() {
return tokenizer.tokens();
}
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const Token* tokens() const {
return tokenizer.tokens();
}
};
class ScopedFile {
public:
ScopedFile(std::string name, const std::string &content, std::string path = "");
~ScopedFile();
const std::string& path() const
{
return mFullPath;
}
ScopedFile(const ScopedFile&) = delete;
ScopedFile(ScopedFile&&) = delete;
ScopedFile& operator=(const ScopedFile&) = delete;
ScopedFile& operator=(ScopedFile&&) = delete;
private:
const std::string mName;
const std::string mPath;
const std::string mFullPath;
};
class PreprocessorHelper
{
public:
/**
* Get preprocessed code for a given configuration
*
* Note: for testing only.
*
* @param filedata file data including preprocessing 'if', 'define', etc
* @param cfg configuration to read out
* @param filename name of source file
* @param inlineSuppression the inline suppressions
*/
static std::string getcode(Preprocessor &preprocessor, const std::string &filedata, const std::string &cfg, const std::string &filename, Suppressions *inlineSuppression = nullptr);
static void preprocess(const char code[], std::vector<std::string> &files, Tokenizer& tokenizer);
static void preprocess(Preprocessor &preprocessor, const char code[], std::vector<std::string> &files, Tokenizer& tokenizer);
};
namespace cppcheck {
template<typename T>
std::size_t count_all_of(const std::string& str, T sub) {
std::size_t n = 0;
std::string::size_type pos = 0;
while ((pos = str.find(sub, pos)) != std::string::npos) {
++pos;
++n;
}
return n;
}
}
/* designated initialization helper
Usage:
struct S
{
int i;
};
const auto s = dinit(S,
$.i = 1
);
*/
#define dinit(T, ...) \
([&] { T ${}; __VA_ARGS__; return $; }())
// Default construct object to avoid bug in clang
// error: default member initializer for 'y' needed within definition of enclosing class 'X' outside of member functions
// see https://stackoverflow.com/questions/53408962
struct make_default_obj
{
template<class T>
operator T() const // NOLINT
{
return T{};
}
};
#endif // helpersH