fetch method
Add n
elements to buffer.
@return The actual number of elements added to the buffer.
Implementation
int fetch(int n) {
if (fetchedEOF) {
return 0;
}
for (var i = 0; i < n; i++) {
final t = tokenSource.nextToken();
if (t is WritableToken) {
t.tokenIndex = tokens.length;
}
tokens.add(t);
if (t.type == Token.EOF) {
fetchedEOF = true;
return i + 1;
}
}
return n;
}