Formula * FractionParser::partitionFirstFractionAndOtherSymbols(vector<Formula *>& formulae) {
Formula::WidthComparator comp;
sort(formulae.rbegin(), formulae.rend(), comp);
Formula * fraction = NULL;
vector<Formula *> * other = new vector<Formula *>;
bool found = false;
for (vector<Formula *>::iterator i = formulae.begin(); i != formulae.end(); i++) {
Formula * currentFormula = *i;
if ((isFracBarSymbol(currentFormula) || isMinusSymbol(currentFormula)) && found == false) {
fraction = currentFormula;
found = true;
} else {
other->push_back(currentFormula);
}
}
formulae = *other;
delete (other);
return fraction;
}
bool simpleExpression(char s[], int &position)
{
if (s[position] == '(')
{
int current = position + 1;
if (sumExpression(s, current))
{
position = current;
if (s[position] == ')')
{
position++;
return true;
}
else
{
return false;
}
}
else
return false;
}
else if (isNumberSymbol(s[position]) || isMinusSymbol(s[position]))
{
return correctNumber(s,position);
}
else
{
return false;
}
}