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 * permitted provided that the following conditions are met:
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 * 1. Redistributions of source code must retain the above copyright notice, this list of
 * conditions and the following disclaimer.
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 * 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 MDSubrange implements MDBaseNode {

    private final long lowerBound;

    private final long size;

    private MDSubrange(long lowerBound, long size) {
        this.lowerBound = lowerBound;
        this.size = size;
    }

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

    public long getLowerBound() {
        return lowerBound;
    }

    public long getSize() {
        return size;
    }

    @Override
    public String toString() {
        return String.format("Subrange (lowerBound=%d, size=%d)", lowerBound, size);
    }

    private static final int ARGINDEX_COUNT = 1;
    private static final int ARGINDEX_STARTFROM = 2;

    public static MDSubrange create38(long[] args) {
        final long count = args[ARGINDEX_COUNT];
        final long startFrom = ParseUtil.unrotateSign(args[ARGINDEX_STARTFROM]);
        return new MDSubrange(startFrom, count);
    }

    private static final int ARGINDEX_32_LOWERBOUND = 1;
    private static final int ARGINDEX_32_UPPERBOUND = 2;

    public static MDSubrange create32(MDTypedValue[] args) {
        final long lowerBound = ParseUtil.asInt64(args[ARGINDEX_32_LOWERBOUND]);
        final long upperBound = ParseUtil.asInt64(args[ARGINDEX_32_UPPERBOUND]);
        final long size = upperBound - lowerBound + 1;
        return new MDSubrange(lowerBound, size);
    }

}