org.redkale.convert.ext.DoubleArraySimpledCoder Maven / Gradle / Ivy
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package org.redkale.convert.ext;
import java.util.stream.DoubleStream;
import org.redkale.convert.Reader;
import org.redkale.convert.SimpledCoder;
import org.redkale.convert.Writer;
/**
* double[] 的SimpledCoder实现
*
*
* 详情见: https://redkale.org
*
* @author zhangjx
* @param Reader输入的子类型
* @param Writer输出的子类型
*/
public final class DoubleArraySimpledCoder extends SimpledCoder {
public static final DoubleArraySimpledCoder instance = new DoubleArraySimpledCoder();
@Override
public void convertTo(W out, double[] values) {
if (values == null) {
out.writeNull();
return;
}
if (out.writeArrayB(values.length, DoubleSimpledCoder.instance, values) < 0) {
boolean flag = false;
for (double v : values) {
if (flag) out.writeArrayMark();
out.writeDouble(v);
flag = true;
}
}
out.writeArrayE();
}
@Override
public double[] convertFrom(R in) {
int len = in.readArrayB(null, DoubleSimpledCoder.instance);
int contentLength = -1;
if (len == Reader.SIGN_NULL) return null;
if (len == Reader.SIGN_NOLENBUTBYTES) {
contentLength = in.readMemberContentLength(null, DoubleSimpledCoder.instance);
len = Reader.SIGN_NOLENGTH;
}
if (len == Reader.SIGN_NOLENGTH) {
int size = 0;
double[] data = new double[8];
int startPosition = in.position();
while (in.hasNext(startPosition, contentLength)) {
if (size >= data.length) {
double[] newdata = new double[data.length + 4];
System.arraycopy(data, 0, newdata, 0, size);
data = newdata;
}
data[size++] = in.readDouble();
}
in.readArrayE();
double[] newdata = new double[size];
System.arraycopy(data, 0, newdata, 0, size);
return newdata;
} else {
double[] values = new double[len];
for (int i = 0; i < values.length; i++) {
values[i] = in.readDouble();
}
in.readArrayE();
return values;
}
}
public final static class DoubleStreamSimpledCoder extends SimpledCoder {
public static final DoubleStreamSimpledCoder instance = new DoubleStreamSimpledCoder();
@Override
@SuppressWarnings("unchecked")
public void convertTo(W out, DoubleStream values) {
if (values == null) {
out.writeNull();
return;
}
DoubleArraySimpledCoder.instance.convertTo(out, values.toArray());
}
@Override
@SuppressWarnings("unchecked")
public DoubleStream convertFrom(R in) {
double[] value = DoubleArraySimpledCoder.instance.convertFrom(in);
return value == null ? null : DoubleStream.of(value);
}
}
}