org.graalvm.compiler.core.common

Class Fields

java.lang.Object

org.graalvm.compiler.core.common.Fields

Direct Known Subclasses:

Edges

public class Fields
extends Object

Describes fields in a class, primarily for access via Unsafe.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	Fields.ObjectTransformer Function enabling an object field value to be replaced with another value when being copied within Fields.copy(Object, Object, ObjectTransformer).

Field Summary

Fields

Modifier and Type	Field and Description
protected long[]	offsets Offsets used with Unsafe to access the fields.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	Fields(List<? extends FieldsScanner.FieldInfo> fields)

Method Summary

Modifier and Type	Method and Description
void	appendFields(StringBuilder sb)
void	copy(Object from, Object to) Copies fields from from to to, both of which must be of the same type.
void	copy(Object from, Object to, Fields.ObjectTransformer trans) Copies fields from from to to, both of which must be of the same type.
static Fields	create(ArrayList<? extends FieldsScanner.FieldInfo> fields)
static Fields	forClass(Class<?> clazz, Class<?> endClazz, boolean includeTransient, FieldsScanner.CalcOffset calcOffset)
Object	get(Object object, int index) Gets the value of a field for a given object.
boolean	getBoolean(Object n, int i)
byte	getByte(Object n, int i)
char	getChar(Object n, int i)
int	getCount() Gets the number of fields represented by this object.
Class<?>	getDeclaringClass(int index)
double	getDouble(Object n, int i)
float	getFloat(Object n, int i)
int	getInt(Object n, int i)
long	getLong(Object n, int i)
String	getName(int index) Gets the name of a field.
Object	getObject(Object object, int i)
long[]	getOffsets()
long	getRawPrimitive(Object object, int index) Gets the value of a field for a given object.
short	getShort(Object n, int i)
Class<?>	getType(int index) Gets the type of a field.
boolean	isSame(Fields other, int index) Determines if a field in the domain of this object is the same as the field denoted by the same index in another Fields object.
void	putObject(Object object, int i, Object value)
void	putObjectChecked(Object object, int i, Object value)
void	setRawPrimitive(Object object, int index, long value)
String	toString()
static void	translateInto(Fields fields, ArrayList<FieldsScanner.FieldInfo> infos)

Methods inherited from class java.lang.Object

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

Field Detail

offsets

protected final long[] offsets

Offsets used with Unsafe to access the fields.

Constructor Detail

Fields

protected Fields(List<? extends FieldsScanner.FieldInfo> fields)

Method Detail

forClass

public static Fields forClass(Class<?> clazz,
                              Class<?> endClazz,
                              boolean includeTransient,
                              FieldsScanner.CalcOffset calcOffset)

create

public static Fields create(ArrayList<? extends FieldsScanner.FieldInfo> fields)

getCount

public int getCount()

Gets the number of fields represented by this object.

translateInto

public static void translateInto(Fields fields,
                                 ArrayList<FieldsScanner.FieldInfo> infos)

copy

public void copy(Object from,
                 Object to)

Copies fields from from to to, both of which must be of the same type.

Parameters:

from - the object from which the fields should be copied

to - the object to which the fields should be copied

copy

public void copy(Object from,
                 Object to,
                 Fields.ObjectTransformer trans)

Copies fields from from to to, both of which must be of the same type.

Parameters:

from - the object from which the fields should be copied

to - the object to which the fields should be copied

trans - function to applied to object field values as they are copied. If null, the value is copied unchanged.

get

public Object get(Object object,
                  int index)

Gets the value of a field for a given object.

Parameters:

object - the object whose field is to be read

index - the index of the field (between 0 and Fields.getCount())

Returns:

the value of the specified field which will be boxed if the field type is primitive

getRawPrimitive

public long getRawPrimitive(Object object,
                            int index)

Gets the value of a field for a given object.

Parameters:

object - the object whose field is to be read

index - the index of the field (between 0 and Fields.getCount())

Returns:

the value of the specified field which will be boxed if the field type is primitive

isSame

public boolean isSame(Fields other,
                      int index)

Determines if a field in the domain of this object is the same as the field denoted by the same index in another Fields object.

getOffsets

public long[] getOffsets()

getName

public String getName(int index)

Gets the name of a field.

Parameters:

index - index of a field

getType

public Class<?> getType(int index)

Gets the type of a field.

Parameters:

index - index of a field

getDeclaringClass

public Class<?> getDeclaringClass(int index)

setRawPrimitive

public void setRawPrimitive(Object object,
                            int index,
                            long value)

toString

public String toString()

Overrides:

toString in class Object

appendFields

public void appendFields(StringBuilder sb)

getBoolean

public boolean getBoolean(Object n,
                          int i)

getByte

public byte getByte(Object n,
                    int i)

getShort

public short getShort(Object n,
                      int i)

getChar

public char getChar(Object n,
                    int i)

getInt

public int getInt(Object n,
                  int i)

getLong

public long getLong(Object n,
                    int i)

getFloat

public float getFloat(Object n,
                      int i)

getDouble

public double getDouble(Object n,
                        int i)

getObject

public Object getObject(Object object,
                        int i)

putObject

public void putObject(Object object,
                      int i,
                      Object value)

putObjectChecked

public void putObjectChecked(Object object,
                             int i,
                             Object value)