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/*
* Cppcheck - A tool for static C/C++ code analysis
* Copyright (C) 2007-2016 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 preprocessorH
#define preprocessorH
//---------------------------------------------------------------------------
#include "config.h"
#include "simplecpp.h"
#include <map>
#include <istream>
#include <string>
#include <list>
#include <set>
class ErrorLogger;
class Settings;
/**
* @brief A preprocessor directive
* Each preprocessor directive (\#include, \#define, \#undef, \#if, \#ifdef, \#else, \#endif)
* will be recorded as an instance of this class.
*
* file and linenr denote the location where where the directive is defined.
*
*/
class CPPCHECKLIB Directive {
public:
/** name of (possibly included) file where directive is defined */
std::string file;
/** line number in (possibly included) file where directive is defined */
unsigned int linenr;
/** the actual directive text */
std::string str;
/** record a directive (possibly filtering src) */
Directive(const std::string &_file, const int _linenr, const std::string &_str);
};
/// @addtogroup Core
/// @{
/**
* @brief The cppcheck preprocessor.
* The preprocessor has special functionality for extracting the various ifdef
* configurations that exist in a source file.
*/
class CPPCHECKLIB Preprocessor {
public:
/**
* Include file types.
*/
enum HeaderTypes {
NoHeader = 0,
UserHeader,
SystemHeader
};
/** character that is inserted in expanded macros */
static char macroChar;
Preprocessor(Settings& settings, ErrorLogger *errorLogger = nullptr);
virtual ~Preprocessor();
static bool missingIncludeFlag;
static bool missingSystemIncludeFlag;
void inlineSuppressions(const simplecpp::TokenList &tokens);
void setDirectives(const simplecpp::TokenList &tokens);
std::set<std::string> getConfigs(const simplecpp::TokenList &tokens) const;
void loadFiles(const simplecpp::TokenList &rawtokens, std::vector<std::string> &files);
void removeComments();
void setPlatformInfo(simplecpp::TokenList *tokens) const;
/**
* Extract the code for each configuration
* @param istr The (file/string) stream to read from.
* @param result The map that will get the results
* @param filename The name of the file to check e.g. "src/main.cpp"
* @param includePaths List of paths where include files should be searched from,
* single path can be e.g. in format "include/".
* There must be a path separator at the end. Default parameter is empty list.
* Note that if path from given filename is also extracted and that is used as
* a last include path if include file was not found from earlier paths.
*/
void preprocess(std::istream &istr, std::map<std::string, std::string> &result, const std::string &filename, const std::list<std::string> &includePaths = std::list<std::string>());
/**
* Extract the code for each configuration. Use this with getcode() to get the
* file data for each individual configuration.
*
* @param srcCodeStream The (file/string) stream to read from.
* @param processedFile Give reference to empty string as a parameter,
* function will fill processed file here. Use this also as a filedata parameter
* to getcode() if you received more than once configurations.
* @param resultConfigurations List of configurations. Pass these one by one
* to getcode() with processedFile.
* @param filename The name of the file to check e.g. "src/main.cpp"
* @param includePaths List of paths where include files should be searched from,
* single path can be e.g. in format "include/".
* There must be a path separator at the end. Default parameter is empty list.
* Note that if path from given filename is also extracted and that is used as
* a last include path if include file was not found from earlier paths.
*/
void preprocess(std::istream &srcCodeStream, std::string &processedFile, std::list<std::string> &resultConfigurations, const std::string &filename, const std::list<std::string> &includePaths);
std::string getcode(const simplecpp::TokenList &tokens1, const std::string &cfg, std::vector<std::string> &files, const bool writeLocations);
/**
* Get preprocessed code for a given configuration
* @param filedata file data including preprocessing 'if', 'define', etc
* @param cfg configuration to read out
* @param filename name of source file
*/
std::string getcode(const std::string &filedata, const std::string &cfg, const std::string &filename);
/**
* preprocess all whitespaces
* @param processedFile The data to be processed
*/
static void preprocessWhitespaces(std::string &processedFile);
/**
* make sure empty configuration macros are not used in code. the given code must be a single configuration
* @param code The input code
* @param cfg configuration
* @return true => configuration is valid
*/
bool validateCfg(const std::string &code, const std::string &cfg);
void validateCfgError(const std::string &cfg, const std::string &macro);
private:
/**
* Remove space that has new line character on left or right side of it.
*
* @param str The string to be converted
* @return The string where space characters have been removed.
*/
static std::string removeSpaceNearNL(const std::string &str);
public:
static void getErrorMessages(ErrorLogger *errorLogger, const Settings *settings);
void setFile0(const std::string &f) {
file0 = f;
}
/**
* dump all directives present in source file
*/
void dump(std::ostream &out) const;
private:
void missingInclude(const std::string &filename, unsigned int linenr, const std::string &header, HeaderTypes headerType);
void error(const std::string &filename, unsigned int linenr, const std::string &msg);
Settings& _settings;
ErrorLogger *_errorLogger;
/** list of all directives met while preprocessing file */
std::list<Directive> directives;
std::map<std::string, simplecpp::TokenList *> tokenlists;
/** filename for cpp/c file - useful when reporting errors */
std::string file0;
};
/// @}
//---------------------------------------------------------------------------
#endif // preprocessorH