org.graalvm.graphio

Interface GraphTypes

All Known Implementing Classes:

BinaryGraphPrinter

public interface GraphTypes

Special support for dealing with enums. Normally one can represent various graph enum values with real Enum instances. In case this is not possible, the GraphOutput.Builder allows one to register an implementation of this interface to treat them specially.

Method Summary

Modifier and Type	Method and Description
Object	enumClass(Object enumValue) Recognizes an enum object.
int	enumOrdinal(Object obj) Ordinal of an enum.
String[]	enumTypeValues(Object maybeEnumClass) All possible values of an enum.
String	typeName(Object maybeClass) Finds Java type name for a given class.

Method Detail

enumClass

Object enumClass(Object enumValue)

Recognizes an enum object. If the enumValue object represents an enum, then an object that represents its class shall be returned.

Parameters:

enumValue - the value to test

Returns:

null if the value isn't enum, otherwise its class

enumOrdinal

int enumOrdinal(Object obj)

Ordinal of an enum. If the obj represents an enum, then return its ordinal number otherwise return -1

Parameters:

obj - the value to test

Returns:

-1 if the obj isn't enum, otherwise its ordinal number

enumTypeValues

String[] enumTypeValues(Object maybeEnumClass)

All possible values of an enum. If the provided maybeEnumClass object represents an enum, then compute enum value names in ordinal order and return them as a string array. Otherwise return null

Parameters:

maybeEnumClass - the class to test

Returns:

null if the clazz isn't an enum, otherwise names of its values

typeName

String typeName(Object maybeClass)

Finds Java type name for a given class.

Parameters:

maybeClass - object representing the class

Returns:

the type name of the class or null if the parameter doesn't represent a class