/Users/jst/src/grafalgo/cpp/misc/Adt.cpp

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#include "Adt.h"

namespace grafalgo {

bool Adt::readItem(istream& in, index& x) {
        Util::skipSpace(in);
        char c = in.peek();
        if (!in.good()) return false;
        if (islower(c)) {
                x = (c - 'a') + 1; c = in.get(); return in.good();
        } else if (isdigit(c)) {
                in >> x; return in.good();
        }
        return false;
}

string& Adt::item2string(index x, string& s) const {
        stringstream ss;
        if (n() <= 26) ss << ((char) ((x-1) + 'a'));
        else ss << x;
        s = ss.str(); return s;
}


} // ends namespace