org.pkl.thirdparty.truffle.api.interop.UnknownIdentifierException Maven / Gradle / Ivy
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package org.pkl.thirdparty.truffle.api.interop;
import org.pkl.thirdparty.truffle.api.CompilerDirectives;
import org.pkl.thirdparty.truffle.api.CompilerDirectives.TruffleBoundary;
/**
* 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.
*
* @see #getUnknownIdentifier()
* @see InteropLibrary
* @since 0.11
*/
public final class UnknownIdentifierException extends InteropException {
private static final long serialVersionUID = 1857745390734085182L;
private final String unknownIdentifier;
private UnknownIdentifierException(String unknownIdentifier) {
super(null); // GR-23961 - after language adoption we should initialize the cause with null.
this.unknownIdentifier = unknownIdentifier;
}
private UnknownIdentifierException(String unknownIdentifier, Throwable cause) {
super(null, cause);
this.unknownIdentifier = unknownIdentifier;
}
/**
* {@inheritDoc}
*
* @since 19.0
*/
@Override
@TruffleBoundary
public String getMessage() {
return "Unknown identifier: " + unknownIdentifier;
}
/**
* Returns the identifier that could not be accessed.
*
* @return the unaccessible identifier
* @since 0.11
*/
public String getUnknownIdentifier() {
return unknownIdentifier;
}
/**
* Creates an {@link UnknownIdentifierException} to indicate that an identifier is missing.
*
* This method is designed to be used in {@link CompilerDirectives#inCompiledCode() compiled}
* code paths.
*
* @param unknownIdentifier the identifier that could not be accessed
* @since 19.0
*/
public static UnknownIdentifierException create(String unknownIdentifier) {
return new UnknownIdentifierException(unknownIdentifier);
}
/**
* Creates an {@link 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 {@link InteropException} is translated to a source language error. If the
* {@link 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
* {@link org.pkl.thirdparty.truffle.api.exception.AbstractTruffleException} otherwise an
* {@link IllegalArgumentException} is thrown.
*
* This method is designed to be used in {@link CompilerDirectives#inCompiledCode() compiled}
* code paths.
*
* @param unknownIdentifier the identifier that could not be accessed
* @param cause the guest language exception that caused the error.
* @since 20.2
*/
public static UnknownIdentifierException create(String unknownIdentifier, Throwable cause) {
return new UnknownIdentifierException(unknownIdentifier, cause);
}
}