org.jruby.ext.ffi
Class NullMemoryIO

java.lang.Object
  org.jruby.ext.ffi.InvalidMemoryIO
      org.jruby.ext.ffi.NullMemoryIO

All Implemented Interfaces:

DirectMemoryIO, MemoryIO

public class NullMemoryIO
extends InvalidMemoryIO
implements DirectMemoryIO

An implementation of MemoryIO that throws an exception on any access.

Field Summary

Fields inherited from class org.jruby.ext.ffi.InvalidMemoryIO

runtime

Constructor Summary

NullMemoryIO(Ruby runtime)

Method Summary

boolean	equals(java.lang.Object obj)
long	getAddress()
protected RubyClass	getErrorClass(Ruby runtime)
int	hashCode()
boolean	isDirect() Checks if the memory area is a native memory pointer.
boolean	isNull() Checks if the memory area is NULL.

Methods inherited from class org.jruby.ext.ffi.InvalidMemoryIO

asByteBuffer, clear, dup, ex, get, get, get, get, get, get, getAddress, getByte, getDouble, getFloat, getInt, getLong, getMemoryIO, getNativeLong, getShort, getZeroTerminatedByteArray, getZeroTerminatedByteArray, indexOf, indexOf, order, put, put, put, put, put, put, putAddress, putByte, putDouble, putFloat, putInt, putLong, putMemoryIO, putNativeLong, putShort, putZeroTerminatedByteArray, setMemory, slice, slice

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.jruby.ext.ffi.MemoryIO

asByteBuffer, dup, get, get, get, get, get, get, getAddress, getByte, getDouble, getFloat, getInt, getLong, getMemoryIO, getNativeLong, getShort, getZeroTerminatedByteArray, getZeroTerminatedByteArray, indexOf, indexOf, order, put, put, put, put, put, put, putAddress, putByte, putDouble, putFloat, putInt, putLong, putMemoryIO, putNativeLong, putShort, putZeroTerminatedByteArray, setMemory, slice, slice

Constructor Detail

NullMemoryIO

public NullMemoryIO(Ruby runtime)

Method Detail

getErrorClass

protected RubyClass getErrorClass(Ruby runtime)

Overrides:

getErrorClass in class InvalidMemoryIO

getAddress

public long getAddress()

Specified by:

getAddress in interface DirectMemoryIO

isNull

public boolean isNull()

Description copied from interface: MemoryIO

Checks if the memory area is NULL.

Specified by:

isNull in interface MemoryIO

Returns:

true if the memory area is invalid.

isDirect

public final boolean isDirect()

Description copied from interface: MemoryIO

Checks if the memory area is a native memory pointer.

Specified by:

isDirect in interface MemoryIO

Returns:

true if the memory area is a native pointer.

equals

public boolean equals(java.lang.Object obj)

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object