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/*
* Copyright (C) 2011 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package benchmarks.regression;
import com.google.caliper.Param;
import com.google.caliper.SimpleBenchmark;
import java.util.Locale;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public final class SchemePrefixBenchmark extends SimpleBenchmark {
enum Strategy {
JAVA() {
@Override String execute(String spec) {
int colon = spec.indexOf(':');
if (colon < 1) {
return null;
}
for (int i = 0; i < colon; i++) {
char c = spec.charAt(i);
if (!isValidSchemeChar(i, c)) {
return null;
}
}
return spec.substring(0, colon).toLowerCase(Locale.US);
}
private boolean isValidSchemeChar(int index, char c) {
if ((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z')) {
return true;
}
if (index > 0 && ((c >= '0' && c <= '9') || c == '+' || c == '-' || c == '.')) {
return true;
}
return false;
}
},
REGEX() {
private final Pattern pattern = Pattern.compile("^([a-zA-Z][a-zA-Z0-9+\\-.]*):");
@Override String execute(String spec) {
Matcher matcher = pattern.matcher(spec);
if (matcher.find()) {
return matcher.group(1).toLowerCase(Locale.US);
} else {
return null;
}
}
};
abstract String execute(String spec);
}
@Param Strategy strategy;
public void timeSchemePrefix(int reps) {
for (int i = 0; i < reps; i++) {
strategy.execute("http://android.com");
}
}
}
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