forked from google/flatbuffers
/
ByteBufferReadWriteBuf.java
170 lines (136 loc) · 3.2 KB
/
ByteBufferReadWriteBuf.java
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package com.google.flatbuffers;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
public class ByteBufferReadWriteBuf implements ReadWriteBuf {
private final ByteBuffer buffer;
public ByteBufferReadWriteBuf(ByteBuffer bb) {
this.buffer = bb;
this.buffer.order(ByteOrder.LITTLE_ENDIAN);
}
@Override
public void clear() {
buffer.clear();
}
@Override
public boolean getBoolean(int index) {
return get(index) != 0;
}
@Override
public byte get(int index) {
return buffer.get(index);
}
@Override
public short getShort(int index) {
return buffer.getShort(index);
}
@Override
public int getInt(int index) {
return buffer.getInt(index);
}
@Override
public long getLong(int index) {
return buffer.getLong(index);
}
@Override
public float getFloat(int index) {
return buffer.getFloat(index);
}
@Override
public double getDouble(int index) {
return buffer.getDouble(index);
}
@Override
public String getString(int start, int size) {
return Utf8Safe.decodeUtf8Buffer(buffer, start, size);
}
@Override
public byte[] data() {
return buffer.array();
}
@Override
public void putBoolean(boolean value) {
buffer.put(value ? (byte)1 : (byte)0);
}
@Override
public void put(byte[] value, int start, int length) {
buffer.put(value, start, length);
}
@Override
public void put(byte value) {
buffer.put(value);
}
@Override
public void putShort(short value) {
buffer.putShort(value);
}
@Override
public void putInt(int value) {
buffer.putInt(value);
}
@Override
public void putLong(long value) {
buffer.putLong(value);
}
@Override
public void putFloat(float value) {
buffer.putFloat(value);
}
@Override
public void putDouble(double value) {
buffer.putDouble(value);
}
@Override
public void setBoolean(int index, boolean value) {
set(index, value ? (byte)1 : (byte)0);
}
@Override
public void set(int index, byte value) {
requestCapacity(index + 1);
buffer.put(index, value);
}
@Override
public void set(int index, byte[] value, int start, int length) {
requestCapacity(index + (length - start));
int curPos = buffer.position();
buffer.position(index);
buffer.put(value, start, length);
buffer.position(curPos);
}
@Override
public void setShort(int index, short value) {
requestCapacity(index + 2);
buffer.putShort(index, value);
}
@Override
public void setInt(int index, int value) {
requestCapacity(index + 4);
buffer.putInt(index, value);
}
@Override
public void setLong(int index, long value) {
requestCapacity(index + 8);
buffer.putLong(index, value);
}
@Override
public void setFloat(int index, float value) {
requestCapacity(index + 4);
buffer.putFloat(index, value);
}
@Override
public void setDouble(int index, double value) {
requestCapacity(index + 8);
buffer.putDouble(index, value);
}
@Override
public int writePosition() {
return buffer.position();
}
@Override
public int limit() {
return buffer.limit();
}
@Override
public boolean requestCapacity(int capacity) {
return capacity <= buffer.limit();
}
}