/* * Copyright (C) 2012, 2016 higherfrequencytrading.com * Copyright (C) 2016 Roman Leventov * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU Lesser General Public License as published by * the Free Software Foundation, either version 3 of the License. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ package net.openhft.chronicle.hash.serialization.impl; import net.openhft.chronicle.bytes.Bytes; import net.openhft.chronicle.bytes.BytesUtil; import net.openhft.chronicle.core.util.ReadResolvable; import net.openhft.chronicle.hash.serialization.SizedReader; import net.openhft.chronicle.hash.serialization.StatefulCopyable; import net.openhft.chronicle.wire.WireIn; import net.openhft.chronicle.wire.WireOut; import org.jetbrains.annotations.NotNull; import org.jetbrains.annotations.Nullable; public class CharSequenceSizedReader implements SizedReader<CharSequence>, StatefulCopyable<CharSequenceSizedReader>, ReadResolvable<CharSequenceSizedReader> { public static final CharSequenceSizedReader INSTANCE = new CharSequenceSizedReader(); /** * @deprecated use {@link #INSTANCE} as {@code CharSequenceSizedReader} is immutable and * stateless */ @Deprecated public CharSequenceSizedReader() {} @NotNull @Override public CharSequence read( @NotNull Bytes in, long size, @Nullable CharSequence using) { if (0 > size || size > Integer.MAX_VALUE) throw new IllegalStateException("positive int size expected, " + size + " given"); int csLen = (int) size; StringBuilder usingSB; if (using instanceof StringBuilder) { usingSB = ((StringBuilder) using); usingSB.setLength(0); usingSB.ensureCapacity(csLen); } else { usingSB = new StringBuilder(csLen); } BytesUtil.parseUtf8(in, usingSB, csLen); return usingSB; } @Override public CharSequenceSizedReader copy() { return INSTANCE; } @Override public void readMarshallable(@NotNull WireIn wireIn) { // no fields to read } @Override public void writeMarshallable(@NotNull WireOut wireOut) { // no fields to write } @Override public CharSequenceSizedReader readResolve() { return INSTANCE; } }