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/** |
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* @class SimplePreprocessor |
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* @brief A simple preprocessor. |
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< |
* @note only support #include #ifdef, #ifndef, #endif, #define and #undef, c-like multiple line |
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< |
* comment is not support, macro substitude is not support. |
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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 oopse { |
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class SimplePreprocessor { |
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public: |
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< |
bool preprocess(const std::string& filename, ostream& os) { |
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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(filename, os, defineSet, ifStates); |
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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(const std::string& filename, 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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< |
|
| 82 |
< |
painCave.isFatal = 1; |
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< |
simError(); |
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< |
|
| 85 |
< |
throw OOPSEException(ss.str()); |
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< |
} |
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< |
int lineNo =1; |
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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 OOPSEException(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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< |
while(input.getline(buffer, bufferSize)) { |
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> |
const int bufferSize = 1024; |
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> |
char buffer[bufferSize]; |
| 91 |
> |
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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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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< |
bool ret = subPreprocessor.doPreprocess(includeFilename, os, defineSet, ifStates); |
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> |
std::ifstream includeStream(includeFilename.c_str()); |
| 114 |
> |
if (!includeStream.is_open()) { |
| 115 |
> |
std::stringstream ss; |
| 116 |
> |
ss << "Can not open " << filename << " for preprocessing\n"; |
| 117 |
> |
throw OOPSEException(ss.str()); |
| 118 |
> |
} |
| 119 |
> |
|
| 120 |
> |
bool ret = subPreprocessor.doPreprocess(includeStream, includeFilename, 1, os, defineSet, ifStates); |
| 121 |
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if (!ret) { |
| 122 |
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std::cout << "Error in preprocessing\n"; |
| 123 |
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return false; |
| 144 |
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} |
| 145 |
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os << std::endl; |
| 146 |
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} else { |
| 147 |
< |
std::cout << tokens[0] << " is not support" << std::endl; |
| 147 |
> |
std::cout << tokens[0] << " is not supported (yet)." << std::endl; |
| 148 |
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return false; |
| 149 |
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} |
| 150 |
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}else { |
| 161 |
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} |
| 162 |
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private: |
| 163 |
|
|
| 155 |
– |
const static int bufferSize = 1024; |
| 156 |
– |
char buffer[bufferSize]; |
| 164 |
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}; |
| 165 |
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|
| 166 |
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} |
