jdk.internal.jvmci.hotspot

Class HotSpotObjectConstantImpl

java.lang.Object

jdk.internal.jvmci.meta.AbstractValue

jdk.internal.jvmci.hotspot.HotSpotObjectConstantImpl

All Implemented Interfaces:

HotSpotConstant, HotSpotObjectConstant, HotSpotProxified, Constant, JavaConstant, JavaValue, KindProvider, TrustedInterface, Value, VMConstant

public final class HotSpotObjectConstantImpl
extends AbstractValue
implements HotSpotObjectConstant, HotSpotProxified

Represents a constant non-null object reference, within the compiler and across the compiler/runtime interface.

Nested Class Summary

Nested classes/interfaces inherited from interface jdk.internal.jvmci.meta.Value

Value.IllegalValue

Field Summary

Fields

Modifier and Type	Field and Description
private boolean	compressed
private boolean	isDefaultStable
private Object	object
private byte	stableDimension

Fields inherited from class jdk.internal.jvmci.meta.AbstractValue

ILLEGAL

Fields inherited from interface jdk.internal.jvmci.meta.JavaConstant

DOUBLE_0, DOUBLE_1, FALSE, FLOAT_0, FLOAT_1, INT_0, INT_1, INT_2, INT_MINUS_1, LONG_0, LONG_1, NULL_POINTER, TRUE

Fields inherited from interface jdk.internal.jvmci.meta.Value

ILLEGAL, NO_VALUES

Constructor Summary

Constructors

Modifier	Constructor and Description
private	HotSpotObjectConstantImpl(Object object, boolean compressed)
private	HotSpotObjectConstantImpl(Object object, boolean compressed, int stableDimension, boolean isDefaultStable)

Method Summary

Modifier and Type	Method and Description
boolean	asBoolean() Returns the primitive boolean value this constant represents.
Object	asBoxedPrimitive() Returns the value of this constant as a boxed Java value.
(package private) static Object	asBoxedValue(Constant constant)
double	asDouble() Returns the primitive double value this constant represents.
float	asFloat() Returns the primitive float value this constant represents.
int	asInt() Returns the primitive int value this constant represents.
long	asLong() Returns the primitive long value this constant represents.
<T> T	asObject(Class<T> type) Gets the object represented by this constant represents if it is of a given type.
Object	asObject(ResolvedJavaType type) Gets the object represented by this constant represents if it is of a given type.
JavaConstant	compress()
boolean	equals(Object o)
static JavaConstant	forBoxedValue(Kind kind, Object value)
static JavaConstant	forObject(Object object)
(package private) static JavaConstant	forObject(Object object, boolean compressed)
(package private) static JavaConstant	forStableArray(Object object, int stableDimension, boolean isDefaultStable)
JavaConstant	getCallSiteTarget(Assumptions assumptions) Gets the result of CallSite.getTarget() for the CallSite object represented by this constant.
JavaConstant	getClassLoader() Gets the result of Class.getClassLoader() for the Class object represented by this constant.
JavaConstant	getComponentType() Gets the result of Class.getComponentType() for the Class object represented by this constant.
int	getIdentityHashCode() Gets the identity has code for the object represented by this constant.
Class<?>	getObjectClass() Gets the class of the object represented by this constant.
int	getStableDimension() Number of stable dimensions if this constant is a stable array.
JavaConstant	getSuperclass() Gets the result of Class.getSuperclass() for the Class object represented by this constant.
HotSpotResolvedObjectType	getType() Gets the resolved Java type of the object represented by this constant.
int	hashCode()
boolean	isCompressed()
boolean	isDefaultForKind() Checks whether this constant is the default value for its kind (null, 0, 0.0, false).
boolean	isDefaultStable() Returns true if this is a stable array constant and its elements should be considered as stable regardless of whether they are default values.
boolean	isEqualTo(Object obj) Determines if the object represented by this constant is equal to a given object.
boolean	isInternedString() Determines if this constant represents an interned string.
boolean	isNull() Checks whether this constant is null.
(package private) Object	object() Package-private accessor for the object represented by this constant.
String	toString()
String	toValueString()
JavaConstant	uncompress()

Methods inherited from class jdk.internal.jvmci.meta.AbstractValue

getKind, getKindSuffix, getLIRKind, getPlatformKind, identityEquals

Methods inherited from class java.lang.Object

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

Methods inherited from interface jdk.internal.jvmci.meta.JavaConstant

add, defaultForKind, forBoolean, forBoxedPrimitive, forByte, forChar, forDouble, forFloat, forIllegal, forInt, forIntegerKind, forLong, forPrimitiveInt, forShort, isNonNull, isNull, mul, one, toString, zero

Methods inherited from interface jdk.internal.jvmci.meta.JavaValue

getKind

Methods inherited from interface jdk.internal.jvmci.meta.Value

getLIRKind, getPlatformKind, identityEquals

Methods inherited from interface jdk.internal.jvmci.meta.KindProvider

getKind

Field Detail

object

private final Object object

compressed

private final boolean compressed

stableDimension

private final byte stableDimension

isDefaultStable

private final boolean isDefaultStable

Constructor Detail

HotSpotObjectConstantImpl

private HotSpotObjectConstantImpl(Object object,
                                  boolean compressed,
                                  int stableDimension,
                                  boolean isDefaultStable)

HotSpotObjectConstantImpl

private HotSpotObjectConstantImpl(Object object,
                                  boolean compressed)

Method Detail

forObject

public static JavaConstant forObject(Object object)

forObject

static JavaConstant forObject(Object object,
                              boolean compressed)

forStableArray

static JavaConstant forStableArray(Object object,
                                   int stableDimension,
                                   boolean isDefaultStable)

forBoxedValue

public static JavaConstant forBoxedValue(Kind kind,
                                         Object value)

asBoxedValue

static Object asBoxedValue(Constant constant)

object

Object object()

Package-private accessor for the object represented by this constant.

isEqualTo

public boolean isEqualTo(Object obj)

Determines if the object represented by this constant is equal to a given object.

getObjectClass

public Class<?> getObjectClass()

Gets the class of the object represented by this constant.

isCompressed

public boolean isCompressed()

Specified by:

isCompressed in interface HotSpotConstant

compress

public JavaConstant compress()

Specified by:

compress in interface HotSpotObjectConstant

uncompress

public JavaConstant uncompress()

Specified by:

uncompress in interface HotSpotObjectConstant

getType

public HotSpotResolvedObjectType getType()

Description copied from interface: HotSpotObjectConstant

Gets the resolved Java type of the object represented by this constant.

Specified by:

getType in interface HotSpotObjectConstant

getClassLoader

public JavaConstant getClassLoader()

Description copied from interface: HotSpotObjectConstant

Gets the result of Class.getClassLoader() for the Class object represented by this constant.

Specified by:

getClassLoader in interface HotSpotObjectConstant

Returns:

null if this constant does not represent a Class object

getIdentityHashCode

public int getIdentityHashCode()

Description copied from interface: HotSpotObjectConstant

Gets the identity has code for the object represented by this constant.

Specified by:

getIdentityHashCode in interface HotSpotObjectConstant

getComponentType

public JavaConstant getComponentType()

Description copied from interface: HotSpotObjectConstant

Gets the result of Class.getComponentType() for the Class object represented by this constant.

Specified by:

getComponentType in interface HotSpotObjectConstant

Returns:

null if this constant does not represent a Class object

getSuperclass

public JavaConstant getSuperclass()

Description copied from interface: HotSpotObjectConstant

Gets the result of Class.getSuperclass() for the Class object represented by this constant.

Specified by:

getSuperclass in interface HotSpotObjectConstant

Returns:

null if this constant does not represent a Class object

getCallSiteTarget

public JavaConstant getCallSiteTarget(Assumptions assumptions)

Description copied from interface: HotSpotObjectConstant

Gets the result of CallSite.getTarget() for the CallSite object represented by this constant.

Specified by:

getCallSiteTarget in interface HotSpotObjectConstant

Parameters:

assumptions - used to register an assumption that the CallSite's target does not change

Returns:

null if this constant does not represent a CallSite object

isInternedString

public boolean isInternedString()

Description copied from interface: HotSpotObjectConstant

Determines if this constant represents an interned string.

Specified by:

isInternedString in interface HotSpotObjectConstant

asObject

public <T> T asObject(Class<T> type)

Description copied from interface: HotSpotObjectConstant

Gets the object represented by this constant represents if it is of a given type.

Specified by:

asObject in interface HotSpotObjectConstant

Parameters:

type - the expected type of the object represented by this constant. If the object is required to be of this type, then wrap the call to this method in Objects.requireNonNull(Object).

Returns:

the object value represented by this constant if it is an instance of type otherwise null

asObject

public Object asObject(ResolvedJavaType type)

Description copied from interface: HotSpotObjectConstant

Gets the object represented by this constant represents if it is of a given type.

Specified by:

asObject in interface HotSpotObjectConstant

Parameters:

type - the expected type of the object represented by this constant. If the object is required to be of this type, then wrap the call to this method in Objects.requireNonNull(Object).

Returns:

the object value represented by this constant if it is an instance of type otherwise null

isNull

public boolean isNull()

Description copied from interface: JavaConstant

Checks whether this constant is null.

Specified by:

isNull in interface JavaConstant

Returns:

true if this constant is the null constant

isDefaultForKind

public boolean isDefaultForKind()

Description copied from interface: JavaConstant

Checks whether this constant is the default value for its kind (null, 0, 0.0, false).

Specified by:

isDefaultForKind in interface Constant

Specified by:

isDefaultForKind in interface JavaConstant

Returns:

true if this constant is the default value for its kind

asBoxedPrimitive

public Object asBoxedPrimitive()

Description copied from interface: JavaConstant

Returns the value of this constant as a boxed Java value.

Specified by:

asBoxedPrimitive in interface JavaConstant

Returns:

the value of this constant

asInt

public int asInt()

Description copied from interface: JavaConstant

Returns the primitive int value this constant represents. The constant must have a Kind.getStackKind() of Kind.Int.

Specified by:

asInt in interface JavaConstant

Returns:

the constant value

asBoolean

public boolean asBoolean()

Description copied from interface: JavaConstant

Returns the primitive boolean value this constant represents. The constant must have kind Kind.Boolean.

Specified by:

asBoolean in interface JavaConstant

Returns:

the constant value

asLong

public long asLong()

Description copied from interface: JavaConstant

Returns the primitive long value this constant represents. The constant must have kind Kind.Long, a Kind.getStackKind() of Kind.Int.

Specified by:

asLong in interface JavaConstant

Returns:

the constant value

asFloat

public float asFloat()

Description copied from interface: JavaConstant

Returns the primitive float value this constant represents. The constant must have kind Kind.Float.

Specified by:

asFloat in interface JavaConstant

Returns:

the constant value

asDouble

public double asDouble()

Description copied from interface: JavaConstant

Returns the primitive double value this constant represents. The constant must have kind Kind.Double.

Specified by:

asDouble in interface JavaConstant

Returns:

the constant value

hashCode

public int hashCode()

Overrides:

hashCode in class AbstractValue

equals

public boolean equals(Object o)

Overrides:

equals in class AbstractValue

toValueString

public String toValueString()

Specified by:

toValueString in interface Constant

Specified by:

toValueString in interface JavaConstant

toString

public String toString()

Overrides:

toString in class Object

getStableDimension

public int getStableDimension()

Number of stable dimensions if this constant is a stable array.

isDefaultStable

public boolean isDefaultStable()

Returns true if this is a stable array constant and its elements should be considered as stable regardless of whether they are default values.