/*
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* Copyright (C) 2016 The Android Open Source Project
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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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public class StringReplaceBenchmark {
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static enum StringLengths {
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EMPTY(""),
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L_16(makeString(16)),
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L_64(makeString(64)),
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L_256(makeString(256)),
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L_512(makeString(512));
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private final String value;
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private StringLengths(String s) {
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this.value = s;
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}
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}
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private static final String makeString(int length) {
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final String sequence8 = "abcdefghijklmnop";
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final int numAppends = (length / 16) - 1;
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StringBuilder stringBuilder = new StringBuilder(length);
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// (n-1) occurences of "abcdefghijklmnop"
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for (int i = 0; i < numAppends; ++i) {
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stringBuilder.append(sequence8);
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}
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// and one final occurence of qrstuvwx.
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stringBuilder.append("qrstuvwx");
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return stringBuilder.toString();
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}
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@Param private StringLengths s;
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public void timeReplaceCharNonExistent(int reps) {
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for (int i = 0; i < reps; ++i) {
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s.value.replace('z', '0');
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}
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}
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public void timeReplaceCharRepeated(int reps) {
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for (int i = 0; i < reps; ++i) {
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s.value.replace('a', '0');
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}
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}
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public void timeReplaceSingleChar(int reps) {
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for (int i = 0; i < reps; ++i) {
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s.value.replace('q', '0');
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}
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}
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public void timeReplaceSequenceNonExistent(int reps) {
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for (int i = 0; i < reps; ++i) {
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s.value.replace("fish", "0");
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}
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}
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public void timeReplaceSequenceRepeated(int reps) {
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for (int i = 0; i < reps; ++i) {
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s.value.replace("jklm", "0");
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}
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}
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public void timeReplaceSingleSequence(int reps) {
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for (int i = 0; i < reps; ++i) {
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s.value.replace("qrst", "0");
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}
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}
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}
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