AppendingPrependingTransformer.java

package coloredlightscore.src.asm.transformer.core;

import org.objectweb.asm.tree.ClassNode;
import org.objectweb.asm.tree.InsnList;
import org.objectweb.asm.tree.MethodNode;

public abstract class AppendingPrependingTransformer extends SingleMethodTransformer {
    @Override
    protected final boolean transform(ClassNode clazz, MethodNode method) {
        method.instructions.insert(getPrepends(clazz, method));
        method.instructions.insertBefore(ASMUtils.findLastReturn(method), getAppends(clazz, method));
        return true;
    }

    protected abstract InsnList getAppends(ClassNode clazz, MethodNode method);

    protected abstract InsnList getPrepends(ClassNode clazz, MethodNode method);
}