// ni stands for "next int".
int ni(buffer& buf)
{
int i = atoi(buf.front().c_str());
if (i == 0)
for(char ch : buf.front())
if (!isdigit(ch))
error("Expected number, found \"" +
buf.front() + "\".");
buf.pop_front();
return i;
}
std::string comma_list(const buffer& buf)
{
std::string str;
if (buf.size() == 0)
str = "";
else if (buf.size() == 1)
str = buf.front();
else if (buf.size() == 2)
str = buf.front() + " and " + buf.back();
else
{
buffer::const_iterator it = buf.begin();
str = "and " + *(it++);
for (;it != buf.end(); it++)
str = *it + ", " + str;
}
return str;
}
// ns stands for "next std::string".
std::string ns(buffer& buf)
{
std::string s = buf.front();
buf.pop_front();
return s;
}
// nch stands of "next char".
char nch(buffer& buf)
{
char ch = (buf.front()[0]);
buf.pop_front();
return ch;
}