2008-10-26 11:54:20 +01:00
|
|
|
/*
|
|
|
|
* c++check - c/c++ syntax checking
|
|
|
|
* Copyright (C) 2007 Daniel Marjamäki
|
|
|
|
*
|
|
|
|
* 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/
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
2008-10-26 13:19:19 +01:00
|
|
|
#include "preprocessor.h"
|
|
|
|
|
2008-10-26 16:36:52 +01:00
|
|
|
#include <algorithm>
|
2008-10-26 15:11:21 +01:00
|
|
|
#include <list>
|
2008-10-26 13:19:19 +01:00
|
|
|
#include <sstream>
|
|
|
|
|
2008-10-26 16:36:52 +01:00
|
|
|
/**
|
|
|
|
* Get all possible configurations. By looking at the ifdefs and ifndefs in filedata
|
|
|
|
*/
|
|
|
|
static std::list<std::string> getcfgs( const std::string &filedata );
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Get preprocessed code for a given configuration
|
|
|
|
*/
|
2008-10-26 15:11:21 +01:00
|
|
|
static std::string getcode(const std::string &filedata, std::string cfg);
|
|
|
|
|
2008-10-26 16:36:52 +01:00
|
|
|
|
|
|
|
/**
|
|
|
|
* Extract the code for each configuration
|
|
|
|
* \param istr The (file/string) stream to read from.
|
|
|
|
* \param result The map that will get the results
|
|
|
|
*/
|
2008-10-26 13:19:19 +01:00
|
|
|
void preprocess(std::istream &istr, std::map<std::string, std::string> &result)
|
|
|
|
{
|
|
|
|
std::ostringstream ostr;
|
|
|
|
std::string line;
|
|
|
|
while ( getline(istr, line) )
|
|
|
|
ostr << line << "\n";
|
|
|
|
|
2008-10-26 16:36:52 +01:00
|
|
|
// Get all possible configurations..
|
|
|
|
std::list<std::string> cfgs = getcfgs( ostr.str() );
|
|
|
|
|
|
|
|
// Extract the code for each possible configuration..
|
2008-10-26 15:11:21 +01:00
|
|
|
result.clear();
|
2008-10-26 16:36:52 +01:00
|
|
|
for ( std::list<std::string>::const_iterator it = cfgs.begin(); it != cfgs.end(); ++it )
|
|
|
|
{
|
|
|
|
result[ *it ] = getcode( ostr.str(), *it );
|
|
|
|
}
|
2008-10-26 13:19:19 +01:00
|
|
|
}
|
2008-10-26 11:54:20 +01:00
|
|
|
|
|
|
|
|
2008-10-26 16:36:52 +01:00
|
|
|
|
|
|
|
static std::list<std::string> getcfgs( const std::string &filedata )
|
|
|
|
{
|
|
|
|
std::list<std::string> ret;
|
|
|
|
ret.push_back("");
|
|
|
|
|
|
|
|
std::istringstream istr(filedata);
|
|
|
|
std::string line;
|
|
|
|
while ( getline(istr, line) )
|
|
|
|
{
|
|
|
|
if ( line.find("#ifdef ")==0 || line.find("#ifndef ")==0 )
|
|
|
|
{
|
|
|
|
std::string def( line.substr(line.find(" ") + 1) );
|
|
|
|
if (std::find(ret.begin(), ret.end(), def) == ret.end())
|
|
|
|
ret.push_back( def );
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2008-10-26 15:11:21 +01:00
|
|
|
static std::string getcode(const std::string &filedata, std::string cfg)
|
|
|
|
{
|
|
|
|
std::ostringstream ret;
|
|
|
|
|
|
|
|
std::list<bool> matching_ifdef;
|
|
|
|
|
|
|
|
std::istringstream istr(filedata);
|
|
|
|
std::string line;
|
|
|
|
while ( getline(istr, line) )
|
|
|
|
{
|
|
|
|
if ( line.find("#ifdef ") == 0 )
|
|
|
|
matching_ifdef.push_back( !cfg.empty() && line.find(cfg) != std::string::npos );
|
|
|
|
|
2008-10-26 16:36:52 +01:00
|
|
|
else if ( line.find("#ifndef ") == 0 )
|
|
|
|
matching_ifdef.push_back( cfg.empty() || line.find(cfg) == std::string::npos );
|
|
|
|
|
2008-10-26 15:11:21 +01:00
|
|
|
else if ( line.find("#else") == 0)
|
|
|
|
matching_ifdef.back() = ! matching_ifdef.back();
|
|
|
|
|
|
|
|
else if ( line.find("#endif") == 0 )
|
|
|
|
matching_ifdef.pop_back();
|
|
|
|
|
|
|
|
if ( !matching_ifdef.empty() && !matching_ifdef.back() )
|
|
|
|
line = "";
|
|
|
|
|
|
|
|
if ( line.find("#") == 0 )
|
|
|
|
line = "";
|
|
|
|
|
|
|
|
ret << line << "\n";
|
|
|
|
}
|
|
|
|
|
|
|
|
return ret.str();
|
|
|
|
}
|
|
|
|
|