jdk.internal.jvmci.meta

Class NullConstant

java.lang.Object

jdk.internal.jvmci.meta.AbstractValue

jdk.internal.jvmci.meta.NullConstant

All Implemented Interfaces:

Constant, JavaConstant, JavaValue, KindProvider, TrustedInterface, Value

final class NullConstant
extends AbstractValue
implements JavaConstant

The implementation type of the null constant.

Nested Class Summary

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

Value.IllegalValue

Field Summary

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
protected	NullConstant()

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.
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.
boolean	equals(Object o)
int	hashCode()
boolean	isDefaultForKind() Checks whether this constant is the default value for its kind (null, 0, 0.0, false).
boolean	isNull() Checks whether this constant is null.
String	toString()
String	toValueString()

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

Constructor Detail

NullConstant

protected NullConstant()

Method Detail

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

toString

public String toString()

Overrides:

toString in class Object

toValueString

public String toValueString()

Specified by:

toValueString in interface Constant

Specified by:

toValueString in interface JavaConstant

hashCode

public int hashCode()

Overrides:

hashCode in class AbstractValue

equals

public boolean equals(Object o)

Overrides:

equals in class AbstractValue