bool NPVN::EvaluateComparison(char* comp)
{
    char* c = variables->VariableExpand(comp);
    bool end = false;
    bool unary = true;
    for(int i = 0; i < strlen(c)-1; i++) {
        if (!strncmp(c+i, "==", 2) || !strncmp(c+i, "<=", 2) ||
                    !strncmp(c+i, ">=", 2) || !strncmp(c+i, "!=", 2) ||
                    !strncmp(c+i, "&&", 2) || !strncmp(c+i, "||", 2)) {
            unary = false;
            break;
        }
    }
    if (unary) {
        bool lnot = false;
        int i = 0;
        if (c[0] == '!') {
            lnot = true;
            i++;
        }

        if (c[i] == '0' || c[i] == '\0')
            end = false;
        else
            end = true;

        if (lnot)
            end = !end;
    }
    else {
        char left[strlen(c)+1];
        char op[4];
        char right[strlen(c)+1];
        memset(left, 0, strlen(c)+1);
        memset(op, 0, 4);
        memset(right, 0, strlen(c)+1);
        int i;
        for(i = 0; i < strlen(c)-1; i++) {
            if (c[i] == '(') {
                i++;
                int l;
                for(l = 0; c[i] != ')'; l++, i++) {
                    left[l] = c[i];
                }
                i++;
                break;
            }
            if (!strncmp(c+i, "==", 2) || !strncmp(c+i, "<=", 2) ||
                    !strncmp(c+i, ">=", 2) || !strncmp(c+i, "!=", 2) ||
                    !strncmp(c+i, "&&", 2) || !strncmp(c+i, "||", 2)) {
                strncpy(left, c, i);
                for(int n = strlen(left)-1; n > 0; n--) {
                    if (left[n] == ' ')
                        left[n] = '\0';
                    else
                        break;
                }
                break;
            }
        }
        for(; c[i] == ' '; i++);
        strncpy(op, c+i, 2);
        i+=2;
        for(; c[i] == ' '; i++);
        int bi = i;
        for(; i < strlen(c)-1; i++) {
            if (c[i] == '(') {
                i++;
                int r;
                for(r = 0; c[i] != ')'; r++, i++) {
                    right[r] = c[i];
                }
                i++;
                break;
            }
        }
        if (right[0] == '\0')
            strcpy(right, c+bi);

        if (!strncmp(op, "==", 2)) {
            end = !strcmp(left, right);
        }
        else if (!strncmp(op, "!=", 2)) {

        }
        else if (!strncmp(op, "<=", 2)) {

        }
        else if (!strncmp(op, ">=", 2)) {

        }
        else if (!strncmp(op, "&&", 2)) {
            bool l = EvaluateComparison(left);
            bool r = EvaluateComparison(right);

            end = l && r;
        }
        else if (!strncmp(op, "||", 2)) {
            bool l = EvaluateComparison(left);
            bool r = EvaluateComparison(right);

            end = l || r;
        }
    }

    delete[] c;
    return end;
}