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 * The Universal Permissive License (UPL), Version 1.0
 *
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 * person obtaining a copy of this software, associated documentation and/or
 * data (collectively the "Software"), free of charge and under any and all
 * copyright rights in the Software, and any and all patent rights owned or
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 * unmodified Software as contributed to or provided by such licensor, or (ii)
 * the Larger Works (as defined below), to deal in both
 *
 * (a) the Software, and
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 * (b) any piece of software and/or hardware listed in the lrgrwrks.txt file if
 * one is included with the Software each a "Larger Work" to which the Software
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 * without restriction, including without limitation the rights to copy, create
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 * Software and the Larger Work(s), and to sublicense the foregoing rights on
 * either these or other terms.
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 * This license is subject to the following condition:
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package com.oracle.truffle.sl.parser;

import com.oracle.truffle.api.CompilerDirectives.TruffleBoundary;
import com.oracle.truffle.api.interop.ExceptionType;
import com.oracle.truffle.api.interop.InteropLibrary;
import com.oracle.truffle.api.exception.AbstractTruffleException;
import com.oracle.truffle.api.interop.UnsupportedMessageException;
import com.oracle.truffle.api.library.ExportLibrary;
import com.oracle.truffle.api.library.ExportMessage;
import com.oracle.truffle.api.source.Source;
import com.oracle.truffle.api.source.SourceSection;

@ExportLibrary(InteropLibrary.class)
public class SLParseError extends AbstractTruffleException {

    public static final long serialVersionUID = 1L;
    private final Source source;
    private final int line;
    private final int column;
    private final int length;

    public SLParseError(Source source, int line, int column, int length, String message) {
        super(message);
        this.source = source;
        this.line = line;
        this.column = column;
        this.length = length;
    }

    
Note that any subclass of AbstractTruffleException must always return true for InteropLibrary.isException(Object). That is why it is correct to export getExceptionType() without implementing InteropLibrary.isException(Object). /**
     * Note that any subclass of {@link AbstractTruffleException} must always return
     * <code>true</code> for {@link InteropLibrary#isException(Object)}. That is why it is correct
     * to export {@link #getExceptionType()} without implementing
     * {@link InteropLibrary#isException(Object)}.
     */
    @ExportMessage
    ExceptionType getExceptionType() {
        return ExceptionType.PARSE_ERROR;
    }

    @ExportMessage
    boolean hasSourceLocation() {
        return source != null;
    }

    @ExportMessage(name = "getSourceLocation")
    @TruffleBoundary
    SourceSection getSourceSection() throws UnsupportedMessageException {
        if (source == null) {
            throw UnsupportedMessageException.create();
        }
        return source.createSection(line, column, length);
    }
}