Package com.oracle.truffle.api.interop

Class UnknownIdentifierException

java.lang.Object

java.lang.Throwable

java.lang.Exception

com.oracle.truffle.api.interop.InteropException

com.oracle.truffle.api.interop.UnknownIdentifierException

All Implemented Interfaces:

Serializable

public final class UnknownIdentifierException
extends InteropException

An exception thrown if an object does not contain a member with such an identifier. Interop exceptions are supposed to be caught and converted into a guest language error by the caller.

Since:

0.11

See Also:

• getUnknownIdentifier()
• InteropLibrary
• Serialized Form

Method Summary

Modifier and Type	Method	Description
static UnknownIdentifierException	create(String unknownIdentifier)	Creates an UnknownIdentifierException to indicate that an identifier is missing.
static UnknownIdentifierException	create(String unknownIdentifier, Throwable cause)	Creates an UnknownIdentifierException to indicate that an identifier is missing.
String	getMessage()
String	getUnknownIdentifier()	Returns the identifier that could not be accessed.

Methods inherited from class com.oracle.truffle.api.interop.InteropException

fillInStackTrace, getCause, initCause

Methods inherited from class java.lang.Throwable

addSuppressed, getLocalizedMessage, getStackTrace, getSuppressed, printStackTrace, printStackTrace, printStackTrace, setStackTrace, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Method Details

getMessage

public String getMessage()

Overrides:

getMessage in class Throwable

Since:

19.0

getUnknownIdentifier

public String getUnknownIdentifier()

Returns the identifier that could not be accessed.

Returns:

the unaccessible identifier

Since:

0.11

create

public static UnknownIdentifierException create(String unknownIdentifier)

Creates an UnknownIdentifierException to indicate that an identifier is missing.

This method is designed to be used in compiled code paths.

Parameters:

unknownIdentifier - the identifier that could not be accessed

Since:

19.0

create

public static UnknownIdentifierException create(String unknownIdentifier,
 Throwable cause)

Creates an UnknownIdentifierException to indicate that an identifier is missing.

In addition a cause may be provided. The cause should only be set if the guest language code caused this problem. An example for this is a language specific proxy mechanism that invokes guest language code to describe an object. If the guest language code fails to execute and this interop exception is a valid interpretation of the error, then the error should be provided as cause. The cause can then be used by the source language as new exception cause if the InteropException is translated to a source language error. If the InteropException is discarded, then the cause will most likely get discarded by the source language as well. Note that the cause must be of type AbstractTruffleException otherwise an IllegalArgumentException is thrown.

This method is designed to be used in compiled code paths.

Parameters:

unknownIdentifier - the identifier that could not be accessed

cause - the guest language exception that caused the error.

Since:

20.2