net.sourceforge.plantuml.regex.Matcher2 Maven / Gradle / Ivy
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package net.sourceforge.plantuml.regex;
import java.util.HashMap;
import java.util.Map;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import net.sourceforge.plantuml.utils.Log;
public class Matcher2 {
private final static boolean INSTRUMENT = false;
private final Matcher matcher;
private final String id;
private Matcher2(Matcher matcher, String id) {
this.matcher = matcher;
this.id = id;
}
public static Matcher2 build(Pattern pattern, CharSequence input) {
final long now = System.currentTimeMillis();
final String id = pattern.pattern();
try {
final Matcher matcher2 = pattern.matcher(input);
return new Matcher2(matcher2, id);
} finally {
if (INSTRUMENT) {
addTime(id, System.currentTimeMillis() - now);
}
}
}
public boolean matches() {
final long now = System.currentTimeMillis();
try {
return matcher.matches();
} finally {
addTime(System.currentTimeMillis() - now);
}
}
private void addTime(long duration) {
if (INSTRUMENT == false) {
return;
}
addTime(id, duration);
}
private static final Map durations = new HashMap();
private static long printed;
private static synchronized void addTime(String id, long duration) {
Long total = durations.get(id);
if (total == null) {
total = 0L;
}
total += duration;
durations.put(id, total);
final String longest = getLongest();
if (longest == null) {
return;
}
if (durations.get(longest) > printed) {
Log.info("---------- Regex " + longest + " " + durations.get(longest) + "ms (" + durations.size() + ")");
printed = durations.get(longest);
}
}
private static String getLongest() {
long max = 0;
String result = null;
for (Map.Entry ent : durations.entrySet()) {
if (ent.getValue() > max) {
max = ent.getValue();
result = ent.getKey();
}
}
return result;
}
public String group(int n) {
final long now = System.currentTimeMillis();
try {
return matcher.group(n);
} finally {
addTime(System.currentTimeMillis() - now);
}
}
public String group() {
final long now = System.currentTimeMillis();
try {
return matcher.group();
} finally {
addTime(System.currentTimeMillis() - now);
}
}
public int groupCount() {
final long now = System.currentTimeMillis();
try {
return matcher.groupCount();
} finally {
addTime(System.currentTimeMillis() - now);
}
}
public boolean find() {
final long now = System.currentTimeMillis();
try {
return matcher.find();
} finally {
addTime(System.currentTimeMillis() - now);
}
}
public int end() {
final long now = System.currentTimeMillis();
try {
return matcher.end();
} finally {
addTime(System.currentTimeMillis() - now);
}
}
public int start() {
final long now = System.currentTimeMillis();
try {
return matcher.start();
} finally {
addTime(System.currentTimeMillis() - now);
}
}
}