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Removed MPDouble, MPFloat automatically decides on the precision according to used data type.

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This commit is contained in:
Christian Basler 2017-01-25 17:38:04 +01:00
parent 7a84d1e220
commit 428ffb2a6d
3 changed files with 76 additions and 106 deletions
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83
src/main/java/ch/dissem/msgpack/types/MPDouble.java
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@ -1,83 +0,0 @@
/*
* Copyright 2017 Christian Basler
*
* 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 ch.dissem.msgpack.types;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.nio.ByteBuffer;
import java.util.Objects;
import static ch.dissem.msgpack.types.Utils.bytes;
/**
* Representation of a msgpack encoded float64 number.
*/
public class MPDouble implements MPType<Double> {
private double value;
public MPDouble(double value) {
this.value = value;
}
@Override
public Double getValue() {
return value;
}
public void pack(OutputStream out) throws IOException {
out.write(0xCB);
out.write(ByteBuffer.allocate(8).putDouble(value).array());
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
MPDouble mpDouble = (MPDouble) o;
return Double.compare(mpDouble.value, value) == 0;
}
@Override
public int hashCode() {
return Objects.hash(value);
}
@Override
public String toString() {
return String.valueOf(value);
}
@Override
public String toJson() {
return String.valueOf(value);
}
public static class Unpacker implements MPType.Unpacker<MPDouble> {
public boolean is(int firstByte) {
return firstByte == 0xCB;
}
public MPDouble unpack(int firstByte, InputStream in) throws IOException {
if (firstByte == 0xCB) {
return new MPDouble(bytes(in, 8).getDouble());
} else {
throw new IllegalArgumentException(String.format("Unexpected first byte 0x%02x", firstByte));
}
}
}
}

43
src/main/java/ch/dissem/msgpack/types/MPFloat.java
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@ -25,23 +25,45 @@ import java.util.Objects;
import static ch.dissem.msgpack.types.Utils.bytes;
/**
* Representation of a msgpack encoded float32 number.
* Representation of a msgpack encoded float32 or float64 number.
*/
public class MPFloat implements MPType<Float> {
private float value;
public class MPFloat implements MPType<Double> {
public enum Precision {FLOAT32, FLOAT64}
private final double value;
private final Precision precision;
public MPFloat(float value) {
this.value = value;
this.precision = Precision.FLOAT32;
}
public MPFloat(double value) {
this.value = value;
this.precision = Precision.FLOAT64;
}
@Override
public Float getValue() {
public Double getValue() {
return value;
}
public Precision getPrecision() {
return precision;
}
public void pack(OutputStream out) throws IOException {
switch (precision) {
case FLOAT32:
out.write(0xCA);
out.write(ByteBuffer.allocate(4).putFloat(value).array());
out.write(ByteBuffer.allocate(4).putFloat((float) value).array());
break;
case FLOAT64:
out.write(0xCB);
out.write(ByteBuffer.allocate(8).putDouble(value).array());
break;
}
}
@Override
@ -49,7 +71,7 @@ public class MPFloat implements MPType<Float> {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
MPFloat mpFloat = (MPFloat) o;
return Float.compare(mpFloat.value, value) == 0;
return Double.compare(mpFloat.value, value) == 0;
}
@Override
@ -69,13 +91,16 @@ public class MPFloat implements MPType<Float> {
public static class Unpacker implements MPType.Unpacker<MPFloat> {
public boolean is(int firstByte) {
return firstByte == 0xCA;
return firstByte == 0xCA || firstByte == 0xCB;
}
public MPFloat unpack(int firstByte, InputStream in) throws IOException {
if (firstByte == 0xCA) {
switch (firstByte) {
case 0xCA:
return new MPFloat(bytes(in, 4).getFloat());
} else {
case 0xCB:
return new MPFloat(bytes(in, 8).getDouble());
default:
throw new IllegalArgumentException(String.format("Unexpected first byte 0x%02x", firstByte));
}
}

50
src/test/java/ch/dissem/msgpack/ReaderTest.java
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@ -27,13 +27,15 @@ import java.util.ArrayList;
import java.util.HashMap;
import java.util.Random;
import static ch.dissem.msgpack.types.Utils.mp;
import static ch.dissem.msgpack.types.Utils.nil;
import static org.hamcrest.CoreMatchers.instanceOf;
import static org.hamcrest.core.Is.is;
import static org.junit.Assert.assertThat;
public class ReaderTest {
private static final Random RANDOM = new Random();
private Reader reader = new Reader();
private Reader reader = Reader.getInstance();
@Test
public void ensureDemoJsonIsParsedCorrectly() throws Exception {
@ -44,9 +46,10 @@ public class ReaderTest {
@Test
public void ensureDemoJsonIsEncodedCorrectly() throws Exception {
@SuppressWarnings("MismatchedQueryAndUpdateOfCollection")
MPMap<MPString, MPType<?>> object = new MPMap<>();
object.put(new MPString("compact"), new MPBoolean(true));
object.put(new MPString("schema"), new MPInteger(0));
object.put(mp("compact"), mp(true));
object.put(mp("schema"), mp(0));
ByteArrayOutputStream out = new ByteArrayOutputStream();
object.pack(out);
assertThat(out.toByteArray(), is(bytes("demo.mp")));
@ -56,14 +59,14 @@ public class ReaderTest {
@SuppressWarnings("unchecked")
public void ensureMPArrayIsEncodedAndDecodedCorrectly() throws Exception {
MPArray<MPType<?>> array = new MPArray<>(
new MPBinary(new byte[]{1, 3, 3, 7}),
new MPBoolean(false),
new MPDouble(Math.PI),
new MPFloat(1.5f),
new MPInteger(42),
new MPMap<>(new HashMap<MPNil, MPNil>()),
new MPNil(),
new MPString("yay! \uD83E\uDD13")
mp(new byte[]{1, 3, 3, 7}),
mp(false),
mp(Math.PI),
mp(1.5f),
mp(42),
new MPMap<MPNil, MPNil>(),
nil(),
mp("yay! \uD83E\uDD13")
);
ByteArrayOutputStream out = new ByteArrayOutputStream();
array.pack(out);
@ -72,6 +75,31 @@ public class ReaderTest {
assertThat((MPArray<MPType<?>>) read, is(array));
}
@Test
public void ensureFloatIsEncodedAndDecodedCorrectly() throws Exception {
MPFloat expected = new MPFloat(1.5f);
ByteArrayOutputStream out = new ByteArrayOutputStream();
expected.pack(out);
MPType read = reader.read(new ByteArrayInputStream(out.toByteArray()));
assertThat(read, instanceOf(MPFloat.class));
MPFloat actual = (MPFloat) read;
assertThat(actual, is(expected));
assertThat(actual.getPrecision(), is(MPFloat.Precision.FLOAT32));
}
@Test
public void ensureDoubleIsEncodedAndDecodedCorrectly() throws Exception {
MPFloat expected = new MPFloat(Math.PI);
ByteArrayOutputStream out = new ByteArrayOutputStream();
expected.pack(out);
MPType read = reader.read(new ByteArrayInputStream(out.toByteArray()));
assertThat(read, instanceOf(MPFloat.class));
MPFloat actual = (MPFloat) read;
assertThat(actual, is(expected));
assertThat(actual.getValue(), is(Math.PI));
assertThat(actual.getPrecision(), is(MPFloat.Precision.FLOAT64));
}
@Test
public void ensureStringsAreEncodedAndDecodedCorrectly() throws Exception {
ensureStringIsEncodedAndDecodedCorrectly(0);