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Multi-dex extensions for dexlib2.

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/*
 * multidexlib2 - Copyright 2015-2022 Rodrigo Balerdi
 * (GNU General Public License version 3 or later)
 *
 * multidexlib2 is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published
 * by the Free Software Foundation, either version 3 of the License,
 * or (at your option) any later version.
 */

package lanchon.multidexlib2;

import com.android.tools.smali.dexlib2.Opcodes;
import com.android.tools.smali.dexlib2.VersionMap;

public class OpcodeUtils {

	private OpcodeUtils() {
	}

	public static Opcodes getOpcodesFromDexVersion(int dexVersion) {
		return Opcodes.forDexVersion(dexVersion);
	}

	public static int getDexVersionFromOpcodes(Opcodes opcodes) {
		if (opcodes.api == VersionMap.NO_VERSION) throw undefinedApiLevel();
		return VersionMap.mapApiToDexVersion(opcodes.api);
	}

	public static Opcodes getNewestOpcodes(Opcodes o1, Opcodes o2, boolean nullable) {
		if (nullable) {
			if (o1 == null) return o2;
			if (o2 == null) return o1;
		}
		if (o1.api == VersionMap.NO_VERSION || o2.api == VersionMap.NO_VERSION) throw undefinedApiLevel();
		return o1.api >= o2.api ? o1 : o2;
	}

	private static IllegalArgumentException undefinedApiLevel() {
		return new IllegalArgumentException("Opcodes instance has undefined api level");
	}

}