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// Test case for Issue 291
// https://github.com/typetools/checker-framework/issues/291
import java.util.regex.*;
import org.checkerframework.checker.regex.RegexUtil;
public class MatcherGroupCount {
public static void main(String[] args) {
String regex = args[0];
String content = args[1];
if (!RegexUtil.isRegex(regex)) {
System.out.println(
"Error parsing regex \""
+ regex
+ "\": "
+ RegexUtil.regexException(regex).getMessage());
System.exit(1);
}
Pattern pat = Pattern.compile(regex);
Matcher mat = pat.matcher(content);
if (mat.matches()) {
if (mat.groupCount() > 0) {
System.out.println("Group: " + mat.group(1));
} else {
System.out.println("No group found!");
}
if (mat.groupCount() >= 2) {
System.out.println("Group: " + mat.group(2));
}
if (mat.groupCount() >= 2) {
// :: error: (group.count.invalid)
System.out.println("Group: " + mat.group(3));
}
if (2 < mat.groupCount()) {
System.out.println("Group: " + mat.group(3));
}
if (!(mat.groupCount() > 4)) {
System.out.println("Group: " + mat.group(0));
} else {
System.out.println("Group: " + mat.group(5));
// :: error: (group.count.invalid)
System.out.println("Group: " + mat.group(6));
}
} else {
System.out.println("No match!");
}
}
}
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