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Truffle SL is an example language implemented using the Truffle API.
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/*
* Copyright (c) 2017, 2022, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* The Universal Permissive License (UPL), Version 1.0
*
* Subject to the condition set forth below, permission is hereby granted to any
* 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
* freely licensable by each licensor hereunder covering either (i) the
* 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
*
* (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
* is contributed by such licensors),
*
* without restriction, including without limitation the rights to copy, create
* derivative works of, display, perform, and distribute the Software and make,
* use, sell, offer for sale, import, export, have made, and have sold the
* Software and the Larger Work(s), and to sublicense the foregoing rights on
* either these or other terms.
*
* This license is subject to the following condition:
*
* The above copyright notice and either this complete permission notice or at a
* minimum a reference to the UPL must be included in all copies or substantial
* portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
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)
@SuppressWarnings("serial")
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 {@link AbstractTruffleException} must always return
* true
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);
}
}
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