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 * Copyright (c) 2019, Oracle and/or its affiliates.
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 * All rights reserved.
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 * Redistribution and use in source and binary forms, with or without modification, are
 * permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice, this list of
 * conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
 * conditions and the following disclaimer in the documentation and/or other materials provided
 * with the distribution.
 *
 * 3. Neither the name of the copyright holder nor the names of its contributors may be used to
 * endorse or promote products derived from this software without specific prior written
 * permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS
 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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package com.oracle.truffle.llvm.parser.metadata;

public final class MDLabel extends MDNamedLocation {

    private MDLabel(long line) {
        super(line);
    }

    @Override
    public void accept(MetadataVisitor visitor) {
        visitor.visit(this);
    }

    private static final int ARGINDEX_SCOPE = 1;
    private static final int ARGINDEX_NAME = 2;
    private static final int ARGINDEX_FILE = 3;
    private static final int ARGINDEX_LINE = 4;

    public static MDLabel create(long[] args, MetadataValueList md) {
        final long line = args[ARGINDEX_LINE];
        final MDLabel label = new MDLabel(line);
        label.setScope(md.getNullable(args[ARGINDEX_SCOPE], label));
        label.setName(md.getNullable(args[ARGINDEX_NAME], label));
        label.setFile(md.getNullable(args[ARGINDEX_FILE], label));
        return label;
    }
}