Package jnr.ffi
Class Struct.NumberField
- java.lang.Object
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- jnr.ffi.Struct.Member
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- jnr.ffi.Struct.NumberField
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- Direct Known Subclasses:
Struct.Address
,Struct.Double
,Struct.EnumField
,Struct.Float
,Struct.IntegerAlias
,Struct.PointerField
,Struct.Signed16
,Struct.Signed32
,Struct.Signed64
,Struct.Signed8
,Struct.SignedLong
,Struct.Unsigned16
,Struct.Unsigned32
,Struct.Unsigned64
,Struct.Unsigned8
,Struct.UnsignedLong
- Enclosing class:
- Struct
public abstract class Struct.NumberField extends Struct.Member
Base class for all Number structure fields.
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Constructor Summary
Constructors Modifier Constructor Description protected
NumberField(NativeType type)
protected
NumberField(NativeType type, Struct.Offset offset)
protected
NumberField(TypeAlias type)
protected
NumberField(TypeAlias type, Struct.Offset offset)
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Method Summary
All Methods Instance Methods Abstract Methods Concrete Methods Modifier and Type Method Description byte
byteValue()
Returns abyte
representation of this Number.double
doubleValue()
Returns anfloat
representation of this Number.float
floatValue()
Returns anfloat
representation of this Number.Pointer
getMemory()
Gets the memory object used to store thisMember
abstract int
intValue()
Returns aint
representation of this Number.long
longValue()
Returns along
representation of this Number.long
offset()
Gets the offset within the structure for this field.abstract void
set(java.lang.Number value)
Sets the field to a new value.short
shortValue()
Returns ashort
representation of this Number.Struct
struct()
Gets the Struct this Member is in.java.lang.String
toString()
Returns a string representation of thisNumber
.
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Field Detail
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offset
private final int offset
Offset from the start of the Struct memory this field is located at.
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type
protected final Type type
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Constructor Detail
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NumberField
protected NumberField(NativeType type)
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NumberField
protected NumberField(NativeType type, Struct.Offset offset)
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NumberField
protected NumberField(TypeAlias type)
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NumberField
protected NumberField(TypeAlias type, Struct.Offset offset)
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Method Detail
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getMemory
public final Pointer getMemory()
Description copied from class:Struct.Member
Gets the memory object used to store thisMember
- Specified by:
getMemory
in classStruct.Member
- Returns:
- a
Pointer
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struct
public final Struct struct()
Gets the Struct this Member is in.- Specified by:
struct
in classStruct.Member
- Returns:
- a Struct.
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offset
public final long offset()
Gets the offset within the structure for this field.- Specified by:
offset
in classStruct.Member
- Returns:
- the offset within the structure for this field.
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set
public abstract void set(java.lang.Number value)
Sets the field to a new value.- Parameters:
value
- The new value.
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doubleValue
public double doubleValue()
Returns anfloat
representation of this Number.- Returns:
- an
float
value for this Number.
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floatValue
public float floatValue()
Returns anfloat
representation of this Number.- Returns:
- an
float
value for this Number.
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byteValue
public byte byteValue()
Returns abyte
representation of this Number.- Returns:
- a
byte
value for this Number.
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shortValue
public short shortValue()
Returns ashort
representation of this Number.- Returns:
- a
short
value for this Number.
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intValue
public abstract int intValue()
Returns aint
representation of this Number.- Returns:
- a
int
value for this Number.
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longValue
public long longValue()
Returns along
representation of this Number.- Returns:
- a
long
value for this Number.
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toString
public java.lang.String toString()
Returns a string representation of thisNumber
.- Overrides:
toString
in classjava.lang.Object
- Returns:
- a string representation of this
Number
.
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