本文整理汇总了C++中Symbols::insert方法的典型用法代码示例。如果您正苦于以下问题：C++ Symbols::insert方法的具体用法？C++ Symbols::insert怎么用？C++ Symbols::insert使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类Symbols的用法示例。
在下文中一共展示了Symbols::insert方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: Analyze
void GrammerAnalyzer::Analyze()
{
_TerminalSymbols.clear();
_NonTerminalSymbols.clear();
_Productions.clear();
Symbols lhsSymbols;
Symbols rhsSymbols;
ifstream inFile(_Filename.c_str());
while (inFile.good() && !inFile.eof())
{
string line;
getline(inFile, line);
if (line.empty()) continue;
const string lhs = line.substr(0,line.find_first_of('>')+1);
vector<string> rhs;
while (!line.empty())
{
string word;
if (line.at(0) == ' ')
{
line = line.substr(1);
continue;
}
if (line.at(0) == '<')
{
size_t p2 = line.find_first_of('>') + 1;
word = line.substr(0,p2);
}
else
{
const bool alphabetsOnly(isalpha(line.at(0)));
for (string::const_iterator itr = line.begin(); itr != line.end(); ++itr)
{
if (*itr == ' ') break;
if (alphabetsOnly)
{
if (isalpha(*itr))
word += *itr;
else
break;
}
else
{
if (*itr == '<')
break;
word += *itr;
}
}
}
cout << "Processing Word : " << word << endl;
rhs.push_back(word);
if (word.at(0) == '<')
_NonTerminalSymbols.insert(word);
else if (word.at(0) == '#')
{
cout << "\t Ignoring : " << word << endl;
// rhs.pop_back();
}
else
_TerminalSymbols.insert(word);
line = line.substr(word.size());
}
rhs.erase(rhs.begin());
_Productions.push_back(make_pair(lhs,rhs));
lhsSymbols.insert(lhs);
rhsSymbols.insert(rhs.begin(), rhs.end());
}
cout << "************************" << endl;
cout << "Productions : " << endl;
for (Productions::const_iterator itr = _Productions.begin(); itr != _Productions.end(); ++itr)
{
cout << (*itr).first << " \t-->\t " ;
for (vector<string>::const_iterator itr2 = (*itr).second.begin(); itr2 != (*itr).second.end(); ++itr2)
cout << ' ' << *itr2;
cout << endl;
}
cout << "************************" << endl;
cout << "Terminal Symbols : " << endl;
for (Symbols::const_iterator itr = _TerminalSymbols.begin(); itr != _TerminalSymbols.end(); ++itr)
cout << (*itr) << endl;
cout << "************************" << endl;
cout << "Non Terminal Symbols : " << endl;
for (Symbols::const_iterator itr = _NonTerminalSymbols.begin(); itr != _NonTerminalSymbols.end(); ++itr)
cout << (*itr) << endl;
cout << "************************" << endl;
cout << "Non Terminal Symbols On LHS of Productions : " << endl;
for (Symbols::const_iterator itr = lhsSymbols.begin(); itr != lhsSymbols.end(); ++itr)
cout << (*itr) << endl;
cout << "************************" << endl;
cout << "Symbols on RHS of productions : " << endl;
for (Symbols::const_iterator itr = rhsSymbols.begin(); itr != rhsSymbols.end(); ++itr)
if (itr->at(0) != '#') cout << (*itr) << endl;
}