/**
* tries to find <code>this</code> in <code>s</code> starting at position <code>start</code>.
*
* @return the position of the match within <code>s</code>, i.e. <b>not</b> relative to <code>
* start</code>. If not match can be found, -1 is returned.
*/
public int find(CharSequence s, int start) {
analyzed = false;
in.setSource(s, start);
out.setLength(0);
int l = s.length();
while (start < l) {
try {
a = dfa.match(in, out, smd);
} catch (java.io.IOException e) {
throw new Error("impossible", e);
}
if (a != null && a != DfaRun.EOF) return start;
start += 1;
in.read();
}
return -1;
}
/**
* tests whether <code>this</code> matches a prefix of <code>s</code> starting at position <code>
* pos</code>.
*
* @return the length of the match or -1.
*/
public int atStartOf(CharSequence s, int pos) {
analyzed = false;
in.setSource(s, pos);
out.setLength(0);
try {
a = dfa.match(in, out, smd);
} catch (java.io.IOException e) {
throw new Error("impossible", e);
}
return (a != null && a != DfaRun.EOF) ? out.length() : -1;
}