Interface ModuleEntry

All Superinterfaces:: PoolEntry

public sealed interface ModuleEntry extends PoolEntry

Models a CONSTANT_Module_info structure, denoting a module, in the constant pool of a class file.

The use of a ModuleEntry is modeled by a ModuleDesc. Conversions are through ConstantPoolBuilder.moduleEntry(ModuleDesc) and asSymbol().

A module entry is composite:

ModuleEntry(Utf8Entry name)

where name is a module name.

See Java Virtual Machine Specification:: 4.4.11 The CONSTANT_Module_info Structure
Since:: 24

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
`ModuleDesc`	`asSymbol()`	Returns a symbolic descriptor for the module name.
`boolean`	`matches(ModuleDesc desc)`	Returns whether this entry describes the given module.
`Utf8Entry`	`name()`	Returns the name of the module.

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

name

Utf8Entry name()

Returns the name of the module.

Returns:: the name of the module

asSymbol

ModuleDesc asSymbol()

Returns a symbolic descriptor for the module name.

API Note:: If only symbol equivalence is desired, matches should be used. It requires reduced parsing and can improve class file reading performance.
Returns:: a symbolic descriptor for the module name

matches

boolean matches(ModuleDesc desc)

Returns whether this entry describes the given module.

Parameters:: desc - the module descriptor
Returns:: whether this entry describes the given module
Since:: 25

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