com.oracle.graal.compiler.common

Class Fields

java.lang.Object

com.oracle.graal.compiler.common.Fields

Direct Known Subclasses:

Edges, LIRIntrospection.Values

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 copy(Object, Object, ObjectTransformer).

Field Summary

Fields

Modifier and Type	Field and Description
private Class<?>[]	declaringClasses
private String[]	names The names of the fields.
protected long[]	offsets Offsets used with Unsafe to access the fields.
private Class<?>[]	types The types of the fields.

Constructor Summary

Constructors

Constructor and Description
Fields(ArrayList<? extends FieldsScanner.FieldInfo> fields)

Method Summary

Modifier and Type	Method and Description
void	appendFields(StringBuilder sb)
private boolean	checkAssignableFrom(Object object, int index, Object value) Checks that a given field is assignable from a given value.
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	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	set(Object object, int index, 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, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

offsets

protected final long[] offsets

Offsets used with Unsafe to access the fields.

names

private final String[] names

The names of the fields.

types

private final Class<?>[] types

The types of the fields.

declaringClasses

private final Class<?>[] declaringClasses

Constructor Detail

Fields

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

Method Detail

forClass

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

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 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 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)

checkAssignableFrom

private boolean checkAssignableFrom(Object object,
                                    int index,
                                    Object value)

Checks that a given field is assignable from a given value.

Parameters:

index - the index of the field to check

value - a value that will be assigned to the field

set

public void set(Object object,
                int index,
                Object value)

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)