Engine* FclImporter::fromString(const std::string& fcl) const {
FL_unique_ptr<Engine> engine(new Engine);
std::map<std::string, std::string> tags;
tags["VAR_INPUT"] = "END_VAR";
tags["VAR_OUTPUT"] = "END_VAR";
tags["FUZZIFY"] = "END_FUZZIFY";
tags["DEFUZZIFY"] = "END_DEFUZZIFY";
tags["RULEBLOCK"] = "END_RULEBLOCK";
std::map<std::string, std::string>::const_iterator tagFinder;
std::string currentTag = "", closingTag = "";
std::ostringstream block;
std::istringstream fclReader(fcl);
std::string line;
int lineNumber = 0;
while (std::getline(fclReader, line)) {
++lineNumber;
std::vector<std::string> comments;
comments = Op::split(line, "//");
if (comments.size() > 1) {
line = comments.front();
}
comments = Op::split(line, "#");
if (comments.size() > 1) {
line = comments.front();
}
line = Op::trim(line);
if (line.empty() or line.at(0) == '%' or line.at(0) == '#'
or (line.substr(0, 2) == "//")) {
continue;
}
line = fl::Op::findReplace(line, ";", "");
std::istringstream tokenizer(line);
std::string firstToken;
tokenizer >> firstToken;
if (firstToken == "FUNCTION_BLOCK") {
if (tokenizer.rdbuf()->in_avail() > 0) {
std::ostringstream name;
std::string token;
tokenizer >> token;
name << token;
while (tokenizer >> token) {
name << " " << token;
}
engine->setName(name.str());
}
continue;
}
if (firstToken == "END_FUNCTION_BLOCK") {
break;
}
if (currentTag.empty()) {
tagFinder = tags.find(firstToken);
if (tagFinder == tags.end()) {
std::ostringstream ex;
ex << "[syntax error] unknown block definition <" << firstToken
<< "> " << " in line " << lineNumber << ": " << line;
throw fl::Exception(ex.str(), FL_AT);
}
currentTag = tagFinder->first;
closingTag = tagFinder->second;
block.str("");
block.clear();
block << line << "\n";
continue;
}
if (not currentTag.empty()) {
if (firstToken == closingTag) {
processBlock(currentTag, block.str(), engine.get());
currentTag = "";
closingTag = "";
} else if (tags.find(firstToken) != tags.end()) {
//if opening new block without closing the previous one
std::ostringstream ex;
ex << "[syntax error] expected <" << closingTag << "> before <"
<< firstToken << "> in line: " << line;
throw fl::Exception(ex.str(), FL_AT);
} else {
block << line << "\n";
}
continue;
}
}
Engine* FclImporter::fromString(const std::string& fcl) const {
Engine* engine = new Engine;
engine->addHedge(new Any);
engine->addHedge(new Extremely);
engine->addHedge(new Not);
engine->addHedge(new Seldom);
engine->addHedge(new Somewhat);
engine->addHedge(new Very);
std::map<std::string, std::string> tags;
tags["VAR_INPUT"] = "END_VAR";
tags["VAR_OUTPUT"] = "END_VAR";
tags["FUZZIFY"] = "END_FUZZIFY";
tags["DEFUZZIFY"] = "END_DEFUZZIFY";
tags["RULEBLOCK"] = "END_RULEBLOCK";
std::map<std::string, std::string>::const_iterator tagFinder;
std::string currentTag = "", closingTag = "";
std::ostringstream block;
std::istringstream fclReader(fcl);
std::string line;
int lineNumber = 0;
try {
while (std::getline(fclReader, line)) {
++lineNumber;
line = Op::trim(line);
if (line.empty() or line.at(0) == '#')
continue;
std::istringstream tokenizer(line);
std::string firstToken;
tokenizer >> firstToken;
if (firstToken == "FUNCTION_BLOCK") {
if (tokenizer.rdbuf()->in_avail() > 0) {
std::string name;
tokenizer >> name;
engine->setName(name);
}
continue;
}
if (firstToken == "END_FUNCTION_BLOCK") {
break;
}
if (currentTag.empty()) {
tagFinder = tags.find(firstToken);
if (tagFinder == tags.end()) {
std::ostringstream ex;
ex << "[syntax error] unknown block definition <" << firstToken
<< "> " << " in line " << lineNumber << ": " << line;
throw fl::Exception(ex.str(), FL_AT);
}
currentTag = tagFinder->first;
closingTag = tagFinder->second;
block.clear();
block.str("");
block << line << "\n";
continue;
}
if (not currentTag.empty()) {
if (firstToken == closingTag) {
processBlock(currentTag, block.str(), engine);
currentTag = "";
closingTag = "";
} else if (tags.find(firstToken) != tags.end()) {
//if opening new block without closing the previous one
std::ostringstream ex;
ex << "[syntax error] expected <" << closingTag << "> before <"
<< firstToken << "> in line: " << line;
throw fl::Exception(ex.str(), FL_AT);
} else {
block << line << "\n";
}
continue;
}
}
if (not currentTag.empty()) {
std::ostringstream ex;
ex << "[syntax error] ";
if (block.rdbuf()->in_avail() > 0) {
ex << "expected <" << closingTag << "> for block:\n" << block.str();
} else {
ex << "expected <" << closingTag << ">, but not found";
}
throw fl::Exception(ex.str(), FL_AT);
}
if (engine->numberOfInputVariables() == 0
and engine->numberOfOutputVariables() == 0
and (engine->numberOfRuleBlocks() == 0
or engine->getRuleBlock(0)->numberOfRules() == 0)) {
std::ostringstream ex;
ex << "[importer error] the FCL code introduced produces an empty engine";
throw fl::Exception(ex.str(), FL_AT);
}
} catch (fl::Exception& ex) {
