void ExprParser::parseArguments (const std::string& arguments, Scanner& scanner,
std::vector<Interpreter::Type_Code>& code, bool invert)
{
ExprParser parser (getErrorHandler(), getContext(), mLocals, mLiterals, true);
StringParser stringParser (getErrorHandler(), getContext(), mLiterals);
std::stack<std::vector<Interpreter::Type_Code> > stack;
for (std::string::const_iterator iter (arguments.begin()); iter!=arguments.end();
++iter)
{
if (*iter=='S' || *iter=='c')
{
stringParser.reset();
if (*iter=='c') stringParser.smashCase();
scanner.scan (stringParser);
if (invert)
{
std::vector<Interpreter::Type_Code> tmp;
stringParser.append (tmp);
stack.push (tmp);
}
else
stringParser.append (code);
}
else
{
parser.reset();
scanner.scan (parser);
std::vector<Interpreter::Type_Code> tmp;
char type = parser.append (tmp);
if (type!=*iter)
Generator::convert (tmp, type, *iter);
if (invert)
stack.push (tmp);
else
std::copy (tmp.begin(), tmp.end(), std::back_inserter (code));
}
}
while (!stack.empty())
{
std::vector<Interpreter::Type_Code>& tmp = stack.top();
std::copy (tmp.begin(), tmp.end(), std::back_inserter (code));
stack.pop();
}
}
int main()
{
while (true){
ExprParser parser;
string expr;
cout << "Enter expression: ";
cin >> expr;
double result = 0;
try {
result = parser.calcExpression(expr);
}
catch (char c){
cout << "Unsupported symbol: " << c << endl;
continue;
}
catch (int i){
if (i == 0)
cout << "Empty expression" << endl;
else
cout << "Uncorrect expression" << endl;
continue;
}
catch (string s){
cout << s << endl;
continue;
}
catch (...){
cout << "Unexpected error" << endl;
continue;
}
cout << "Result: " << result << endl;
}
return 0;
}
int ExprParser::parseArguments (const std::string& arguments, Scanner& scanner,
std::vector<Interpreter::Type_Code>& code)
{
bool optional = false;
int optionalCount = 0;
ExprParser parser (getErrorHandler(), getContext(), mLocals, mLiterals, true);
StringParser stringParser (getErrorHandler(), getContext(), mLiterals);
std::stack<std::vector<Interpreter::Type_Code> > stack;
for (std::string::const_iterator iter (arguments.begin()); iter!=arguments.end();
++iter)
{
if (*iter=='/')
{
optional = true;
}
else if (*iter=='S' || *iter=='c' || *iter=='x')
{
stringParser.reset();
if (optional || *iter=='x')
stringParser.setOptional (true);
if (*iter=='c') stringParser.smashCase();
scanner.scan (stringParser);
if (optional && stringParser.isEmpty())
break;
if (*iter!='x')
{
std::vector<Interpreter::Type_Code> tmp;
stringParser.append (tmp);
stack.push (tmp);
if (optional)
++optionalCount;
}
}
else
{
parser.reset();
if (optional || *iter == 'X')
parser.setOptional (true);
scanner.scan (parser);
if (optional && parser.isEmpty())
break;
if (*iter != 'X')
{
std::vector<Interpreter::Type_Code> tmp;
char type = parser.append (tmp);
if (type!=*iter)
Generator::convert (tmp, type, *iter);
stack.push (tmp);
if (optional)
++optionalCount;
}
}
}
while (!stack.empty())
{
std::vector<Interpreter::Type_Code>& tmp = stack.top();
std::copy (tmp.begin(), tmp.end(), std::back_inserter (code));
stack.pop();
}
return optionalCount;
}