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/* |
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* Copyright (c) 2005 The University of Notre Dame. All Rights Reserved. |
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* |
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* The University of Notre Dame grants you ("Licensee") a |
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* non-exclusive, royalty free, license to use, modify and |
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* redistribute this software in source and binary code form, provided |
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* that the following conditions are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the |
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* distribution. |
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* |
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* This software is provided "AS IS," without a warranty of any |
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* kind. All express or implied conditions, representations and |
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* warranties, including any implied warranty of merchantability, |
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* fitness for a particular purpose or non-infringement, are hereby |
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* excluded. The University of Notre Dame and its licensors shall not |
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* be liable for any damages suffered by licensee as a result of |
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* using, modifying or distributing the software or its |
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* derivatives. In no event will the University of Notre Dame or its |
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* licensors be liable for any lost revenue, profit or data, or for |
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* direct, indirect, special, consequential, incidental or punitive |
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* damages, however caused and regardless of the theory of liability, |
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* arising out of the use of or inability to use software, even if the |
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* University of Notre Dame has been advised of the possibility of |
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* such damages. |
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* |
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* SUPPORT OPEN SCIENCE! If you use OpenMD or its source code in your |
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* research, please cite the appropriate papers when you publish your |
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* work. Good starting points are: |
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* |
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* [1] Meineke, et al., J. Comp. Chem. 26, 252-271 (2005). |
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* [2] Fennell & Gezelter, J. Chem. Phys. 124, 234104 (2006). |
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* [3] Sun, Lin & Gezelter, J. Chem. Phys. 128, 24107 (2008). |
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* [4] Kuang & Gezelter, J. Chem. Phys. 133, 164101 (2010). |
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* [5] Vardeman, Stocker & Gezelter, J. Chem. Theory Comput. 7, 834 (2011). |
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*/ |
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|
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#ifndef MDPARSER_SIMPLEPREPROCESSOR_HPP |
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#define MDPARSER_SIMPLEPREPROCESSOR_HPP |
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#include <iostream> |
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#include <set> |
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#include <fstream> |
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#include <sstream> |
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#include "utils/StringTokenizer.hpp" |
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#include "utils/Trim.hpp" |
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#include "utils/OpenMDException.hpp" |
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#include "utils/simError.h" |
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|
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|
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/** |
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* @class SimplePreprocessor |
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* @brief A simple preprocessor. |
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* @note only supports \#include \#ifdef, \#ifndef, \#endif, \#define and \#undef, c-like multiple line |
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* comment is not supported, macro substitute is not supported. |
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*/ |
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namespace OpenMD { |
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class SimplePreprocessor { |
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public: |
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bool preprocess(std::istream& myStream, const std::string& filename, int startingLine, ostream& os) { |
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std::set<std::string> defineSet; |
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std::stack<bool> ifStates; |
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|
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ifStates.push(true); |
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return doPreprocess(myStream, filename, startingLine, os, defineSet, ifStates); |
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} |
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|
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private: |
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bool doPreprocess(std::istream& myStream, const std::string& filename, int startingLine, ostream& os, std::set<std::string>& defineSet, std::stack<bool>& ifStates) { |
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//std::ifstream input(filename.c_str()); |
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//if (!input.is_open()) { |
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// std::stringstream ss; |
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// ss << "Can not open " << filename << " for preprocessing\n"; |
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// |
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// sprintf(painCave.errMsg, |
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// "Can not open (%s) for processing. \n" |
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// "\tPlease check md file name syntax.\n", filename.c_str()); |
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// |
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// painCave.isFatal = 1; |
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// simError(); |
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// |
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// throw OpenMDException(ss.str()); |
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//} |
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int lineNo = startingLine; |
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os << "#line " << lineNo << " \"" << filename << "\"\n"; |
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const int bufferSize = 1024; |
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char buffer[bufferSize]; |
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while(myStream.getline(buffer, bufferSize)) { |
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++lineNo; |
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std::string line = trimLeftCopy(buffer); |
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if (!line.empty() && line[0] == '#') { |
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StringTokenizer tokenizer(line.substr(1, line.length())); |
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std::vector<std::string> tokens = tokenizer.getAllTokens(); |
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if (tokens.size() < 1 ) { |
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return false; |
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} |
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std::string keyword = tokens[0]; |
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if (tokens[0] == "endif") { |
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ifStates.pop(); |
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if (ifStates.empty()) { |
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std::cout << "Error in preprocessing: endif \n"; |
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return false; |
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} |
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os << std::endl; |
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} else if (tokens.size() == 2) { |
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if (tokens[0] == "include") { |
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SimplePreprocessor subPreprocessor; |
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std::string includeFilename = tokens[1]; |
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includeFilename = includeFilename.substr(1, includeFilename.length() -2); |
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std::ifstream includeStream(includeFilename.c_str()); |
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if (!includeStream.is_open()) { |
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std::stringstream ss; |
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ss << "Can not open " << includeFilename << " for preprocessing\n"; |
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throw OpenMDException(ss.str()); |
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} |
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|
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bool ret = subPreprocessor.doPreprocess(includeStream, includeFilename, 1, os, defineSet, ifStates); |
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if (!ret) { |
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std::cout << "Error in preprocessing\n"; |
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return false; |
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} |
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os << "#line " << lineNo << " \"" << filename << "\"\n"; |
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} else if (tokens[0] == "define") { |
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defineSet.insert(tokens[1]); |
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os << std::endl; |
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} else if (tokens[0] == "undef") { |
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defineSet.erase(tokens[1]); |
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os << std::endl; |
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} else if (tokens[0] == "ifdef") { |
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if (defineSet.find(tokens[1]) != defineSet.end() ) { |
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ifStates.push(true); |
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} else { |
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ifStates.push(false); |
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} |
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os << std::endl; |
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} else if (tokens[0] == "ifndef") { |
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if (defineSet.find(tokens[1]) == defineSet.end() ) { |
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ifStates.push(true); |
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} else { |
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ifStates.push(false); |
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} |
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os << std::endl; |
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} else { |
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std::cout << tokens[0] << " is not supported (yet)." << std::endl; |
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return false; |
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} |
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}else { |
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return false; |
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} |
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|
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}else if (ifStates.top()){ |
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os << buffer << std::endl; |
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} |
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|
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} |
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|
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return true; |
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} |
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private: |
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|
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}; |
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|
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} |
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#endif |
