jnr.ffi
Class StructLayout

java.lang.Object
  jnr.ffi.StructLayout

All Implemented Interfaces:

Type

public class StructLayout
extends Object
implements Type

Nested Class Summary

protected class	StructLayout.AbstractBoolean Base class for Boolean fields
protected class	StructLayout.AbstractField Base implementation of Member
protected class	StructLayout.Boolean A normal C boolean - 1 byte in size
class	StructLayout.Double
protected static interface	StructLayout.Field Interface all Struct members must implement.
class	StructLayout.Float
protected class	StructLayout.NumberField Base class for all Number structure fields.
protected class	StructLayout.Padding Specialized padding fields for structs.
class	StructLayout.Pointer Represents a native memory address.
class	StructLayout.Signed16 A 16 bit signed integer field.
class	StructLayout.Signed32 A 32 bit signed integer field.
class	StructLayout.Signed64 A 64 bit signed integer field.
class	StructLayout.Signed8 An 8 bit signed integer
class	StructLayout.SignedLong A native long integer field.
class	StructLayout.Unsigned16 A 16 bit signed integer field.
class	StructLayout.Unsigned32 A 32 bit signed integer field.
class	StructLayout.Unsigned64 A 64 bit unsigned integer field.
class	StructLayout.Unsigned8 An 8 bit unsigned integer
class	StructLayout.UnsignedLong A native long integer field.
protected class	StructLayout.WBOOL A Windows BOOL - 4 bytes

Constructor Summary

protected

StructLayout(Runtime runtime) Creates a new StructLayout.

Method Summary

protected int	addField(int fieldSize, int fieldAlign)
protected int	addField(int fieldSize, int fieldAlign, int offset)
protected int	addField(int fieldSize, int fieldAlign, Struct.Offset offset)
protected int	addField(Type t)
protected int	addField(Type t, int offset)
protected int	addField(Type t, Struct.Offset offset)
int	alignment() The native alignment of this type, in bytes
protected <T extends StructLayout.Field> T[]	array(T[] array) Creates an array of Member instances.
protected void	arrayBegin() Starts an array construction session
protected void	arrayEnd() Ends an array construction session
NativeType	getNativeType() The native type of this type
Runtime	getRuntime()
protected <T extends StructLayout> T	inner(T structLayout)
int	size() The size in bytes of this type.
String	toString() Returns a human readable String representation of the structure.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

StructLayout

protected StructLayout(Runtime runtime)

Creates a new StructLayout.

Method Detail

getRuntime

public final Runtime getRuntime()

size

public final int size()

Description copied from interface: Type

The size in bytes of this type.

Specified by:

size in interface Type

Returns:

An integer

alignment

public final int alignment()

Description copied from interface: Type

The native alignment of this type, in bytes

Specified by:

alignment in interface Type

Returns:

An integer

getNativeType

public NativeType getNativeType()

Description copied from interface: Type

The native type of this type

Specified by:

getNativeType in interface Type

Returns:

the native type of this type

toString

public String toString()

Returns a human readable String representation of the structure.

Overrides:

toString in class Object

Returns:

a String representation of this structure.

addField

protected final int addField(int fieldSize,
                             int fieldAlign,
                             int offset)

addField

protected final int addField(int fieldSize,
                             int fieldAlign,
                             Struct.Offset offset)

addField

protected final int addField(int fieldSize,
                             int fieldAlign)

addField

protected final int addField(Type t)

addField

protected final int addField(Type t,
                             int offset)

addField

protected final int addField(Type t,
                             Struct.Offset offset)

arrayBegin

protected final void arrayBegin()

Starts an array construction session

arrayEnd

protected final void arrayEnd()

Ends an array construction session

array

protected <T extends StructLayout.Field> T[] array(T[] array)

Creates an array of Member instances.

Type Parameters:

T - The type of the Member subclass to create.

Parameters:

array - the array to store the instances in

Returns:

the array that was passed in

inner

protected final <T extends StructLayout> T inner(T structLayout)