Interface DynamicConstantPoolEntry

All Superinterfaces:: PoolEntry

All Known Subinterfaces:: ConstantDynamicEntry, InvokeDynamicEntry

public sealed interface DynamicConstantPoolEntry extends PoolEntry permits ConstantDynamicEntry, InvokeDynamicEntry

Superinterface modeling dynamically-computed constant pool entries, which include ConstantDynamicEntry and InvokeDynamicEntry, in the constant pool of a class file.

Different types of dynamically-computed constant pool entries bear structural similarities, but they appear in distinct locations. As a result, their uses are represented by different symbolic descriptors, specific to each subtype.

A dynamic constant entry is composite:

DynamicConstantPoolEntry(
    BootstrapMethodEntry bootstrap,
    NameAndTypeEntry nameAndType
)

See Java Virtual Machine Specification:

4.4.10 The CONSTANT_Dynamic_info and


             CONSTANT_InvokeDynamic_info

Structures
5.4.3.6 Dynamically-Computed Constant and Call Site Resolution

Sealed Class Hierarchy Graph:

Since:

See Also:

Field Summary

Fields declared in interface PoolEntry

TAG_CLASS, TAG_DOUBLE, TAG_DYNAMIC, TAG_FIELDREF, TAG_FLOAT, TAG_INTEGER, TAG_INTERFACE_METHODREF, TAG_INVOKE_DYNAMIC, TAG_LONG, TAG_METHOD_HANDLE, TAG_METHOD_TYPE, TAG_METHODREF, TAG_MODULE, TAG_NAME_AND_TYPE, TAG_PACKAGE, TAG_STRING, TAG_UTF8

Modifier and Type	Field	Description
`static final int`	`TAG_CLASS`	The tag for `CONSTANT_Class` constant kind.
`static final int`	`TAG_DOUBLE`	The tag for `CONSTANT_Double` constant kind.
`static final int`	`TAG_DYNAMIC`	The tag for `CONSTANT_Dynamic` constant kind.
`static final int`	`TAG_FIELDREF`	The tag for `CONSTANT_Fieldref` constant kind.
`static final int`	`TAG_FLOAT`	The tag for `CONSTANT_Float` constant kind.
`static final int`	`TAG_INTEGER`	The tag for `CONSTANT_Integer` constant kind.
`static final int`	`TAG_INTERFACE_METHODREF`	The tag for `CONSTANT_InterfaceMethodref` constant kind.
`static final int`	`TAG_INVOKE_DYNAMIC`	The tag for `CONSTANT_InvokeDynamic` constant kind.
`static final int`	`TAG_LONG`	The tag for `CONSTANT_Long` constant kind.
`static final int`	`TAG_METHOD_HANDLE`	The tag for `CONSTANT_MethodHandle` constant kind.
`static final int`	`TAG_METHOD_TYPE`	The tag for `CONSTANT_MethodType` constant kind.
`static final int`	`TAG_METHODREF`	The tag for `CONSTANT_Methodref` constant kind.
`static final int`	`TAG_MODULE`	The tag for `CONSTANT_Module` constant kind.
`static final int`	`TAG_NAME_AND_TYPE`	The tag for `CONSTANT_NameAndType` constant kind.
`static final int`	`TAG_PACKAGE`	The tag for `CONSTANT_Package` constant kind.
`static final int`	`TAG_STRING`	The tag for `CONSTANT_String` constant kind.
`static final int`	`TAG_UTF8`	The tag for `CONSTANT_Utf8` constant kind.

Method Summary

Modifier and Type	Method	Description
`BootstrapMethodEntry`	`bootstrap()`	Returns the entry in the bootstrap method table for this constant.
`int`	`bootstrapMethodIndex()`	Returns index of the entry in the bootstrap method table for this constant.
`default Utf8Entry`	`name()`	Returns the name indicated by this symbolic reference.
`NameAndTypeEntry`	`nameAndType()`	Returns the name and the descriptor string indicated by this symbolic reference.
`default Utf8Entry`	`type()`	Returns the descriptor string indicated by this symbolic reference.

Methods declared in interface PoolEntry

constantPool, index, tag, width

Modifier and Type	Method	Description
`ConstantPool`	`constantPool()`	Returns the constant pool this entry is from.
`int`	`index()`	Returns the index within the constant pool corresponding to this entry.
`int`	`tag()`	Returns the constant pool tag that describes the type of this entry.
`int`	`width()`	Returns the number of constant pool slots this entry consumes.

Method Details

bootstrap

BootstrapMethodEntry bootstrap()

Returns the entry in the bootstrap method table for this constant.

Returns:

the entry in the bootstrap method table for this constant

See Also:

bootstrapMethodIndex

int bootstrapMethodIndex()

Returns index of the entry in the bootstrap method table for this constant. The return value is equivalent to


bootstrap().bsmIndex()

Returns:: index of the entry in the bootstrap method table for this constant

nameAndType

NameAndTypeEntry nameAndType()

Returns the name and the descriptor string indicated by this symbolic reference.

Returns:

the name and the descriptor string indicated by this symbolic reference

See Also:

name

default Utf8Entry name()

Returns the name indicated by this symbolic reference.

Returns:: the name indicated by this symbolic reference

type

default Utf8Entry type()

Returns the descriptor string indicated by this symbolic reference. This is a field descriptor string if this entry is a ConstantDynamicEntry, or a method descriptor string if this entry is a InvokeDynamicEntry.

API Note:: Each subinterface has its specific accessor named typeSymbol for the symbolic descriptor derived from this descriptor string.
Returns:: the descriptor string indicated by this symbolic reference

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