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