345 lines
8.7 KiB
Java
345 lines
8.7 KiB
Java
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package appeng.core.api;
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import java.io.InputStream;
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import java.util.HashMap;
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import java.util.Iterator;
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import java.util.LinkedList;
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import java.util.List;
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import net.minecraft.entity.player.EntityPlayer;
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import net.minecraft.item.Item;
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import net.minecraft.item.ItemStack;
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import net.minecraft.tileentity.TileEntity;
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import net.minecraft.world.World;
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import net.minecraftforge.client.MinecraftForgeClient;
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import org.objectweb.asm.ClassReader;
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import org.objectweb.asm.ClassWriter;
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import org.objectweb.asm.commons.Remapper;
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import org.objectweb.asm.commons.RemappingClassAdapter;
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import org.objectweb.asm.tree.AbstractInsnNode;
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import org.objectweb.asm.tree.ClassNode;
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import org.objectweb.asm.tree.MethodInsnNode;
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import org.objectweb.asm.tree.MethodNode;
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import appeng.api.parts.IPartItem;
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import appeng.api.parts.IPartHelper;
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import appeng.api.parts.LayerBase;
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import appeng.client.render.BusRenderer;
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import appeng.core.AELog;
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import appeng.core.AppEng;
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import appeng.helpers.PartPlacement;
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import appeng.integration.abstraction.IFMP;
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import appeng.tile.networking.TileCableBus;
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import appeng.util.Platform;
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import com.google.common.base.Joiner;
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public class ApiPart implements IPartHelper
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{
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int classNum = 1;
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HashMap<String, Class> TileImplementations = new HashMap();
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HashMap<String, ClassNode> readerCache = new HashMap();
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HashMap<Class, String> interfaces2Layer = new HashMap();
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HashMap<String, Class> roots = new HashMap();
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List<String> desc = new LinkedList();
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public void initFMPSupport()
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{
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for (Class layerInterface : interfaces2Layer.keySet())
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{
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if ( AppEng.instance.isIntegrationEnabled( "FMP" ) )
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((IFMP) AppEng.instance.getIntegration( "FMP" )).registerPassThru( layerInterface );
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}
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}
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private Class loadClass(String Name, byte[] b)
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{
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// override classDefine (as it is protected) and define the class.
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Class clazz = null;
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try
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{
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ClassLoader loader = getClass().getClassLoader();// ClassLoader.getSystemClassLoader();
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Class root = ClassLoader.class;
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Class cls = loader.getClass();
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java.lang.reflect.Method defineClassMethod = root.getDeclaredMethod( "defineClass",
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new Class[] { String.class, byte[].class, int.class, int.class } );
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java.lang.reflect.Method runTransformersMethod = cls
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.getDeclaredMethod( "runTransformers", new Class[] { String.class, String.class, byte[].class } );
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runTransformersMethod.setAccessible( true );
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defineClassMethod.setAccessible( true );
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try
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{
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Object[] argsA = new Object[] { Name, Name, b };
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b = (byte[]) runTransformersMethod.invoke( loader, argsA );
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Object[] args = new Object[] { Name, b, new Integer( 0 ), new Integer( b.length ) };
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clazz = (Class) defineClassMethod.invoke( loader, args );
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}
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finally
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{
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runTransformersMethod.setAccessible( false );
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defineClassMethod.setAccessible( false );
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}
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}
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catch (Exception e)
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{
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e.printStackTrace();
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System.exit( 1 );
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}
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return clazz;
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}
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public ClassNode getReader(String name)
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{
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// if ( readerCache.get( name ) != null )
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// return readerCache.get( name );
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ClassReader cr;
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try
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{
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String path = "/" + name.replace( ".", "/" ) + ".class";
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InputStream is = getClass().getResourceAsStream( path );
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cr = new ClassReader( is );
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ClassNode cn = new ClassNode();
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cr.accept( cn, ClassReader.EXPAND_FRAMES );
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// readerCache.put( name, cn );
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return cn;
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}
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catch (Throwable e)
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{
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e.printStackTrace();
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}
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return null;
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}
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public Class getCombinedInstance(String base)// , CableBusContainer cbc)
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{
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/*
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* List<String> desc = new LinkedList(); for (ForgeDirection side : ForgeDirection.values()) { IBusPart part =
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* cbc.getPart( side ); if ( part != null ) { for (Class c : interfaces2Layer.keySet()) { if ( c.isInstance(
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* part ) ) desc.add( interfaces2Layer.get( c ).getName() ); } } }
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*/
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if ( desc.size() == 0 )
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{
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try
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{
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return Class.forName( base );
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}
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catch (Throwable t)
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{
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throw new RuntimeException( t );
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}
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}
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String description = base + ":" + Joiner.on( ";" ).skipNulls().join( desc.iterator() );
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if ( TileImplementations.get( description ) != null )
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{
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try
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{
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return TileImplementations.get( description );
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}
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catch (Throwable t)
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{
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throw new RuntimeException( t );
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}
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}
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String f = base;// TileCableBus.class.getName();
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String Addendum = "";
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try
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{
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Addendum = Class.forName( base ).getSimpleName();
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}
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catch (ClassNotFoundException e)
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{
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e.printStackTrace();
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}
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Class myCLass;
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try
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{
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myCLass = Class.forName( f );
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}
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catch (Throwable t)
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{
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throw new RuntimeException( t );
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}
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String path = f;
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for (String name : desc)
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{
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path = path + ";" + name;
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try
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{
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myCLass = getClassByDesc( Addendum, path, f, interfaces2Layer.get( Class.forName( name ) ) );
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}
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catch (Throwable t)
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{
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throw new RuntimeException( t );
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}
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f = myCLass.getName();
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}
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TileImplementations.put( description, myCLass );
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try
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{
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return myCLass;
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}
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catch (Throwable t)
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{
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throw new RuntimeException( t );
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}
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}
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class DefaultPackageClassNameRemapper extends Remapper
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{
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public HashMap<String, String> inputOutput = new HashMap<String, String>();
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@Override
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public String map(String typeName)
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{
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String o = inputOutput.get( typeName );
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if ( o == null )
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return typeName;
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return o;
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}
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}
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public Class getClassByDesc(String Addendum, String fullPath, String root, String next)
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{
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if ( roots.get( fullPath ) != null )
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return roots.get( fullPath );
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ClassWriter cw = new ClassWriter( ClassWriter.COMPUTE_MAXS );
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ClassNode n = getReader( next );
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String originalName = n.name;
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try
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{
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n.name = n.name + "_" + Addendum;
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n.superName = Class.forName( root ).getName().replace( ".", "/" );
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}
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catch (Throwable t)
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{
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t.printStackTrace();
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}
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for (MethodNode mn : n.methods)
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{
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Iterator<AbstractInsnNode> i = mn.instructions.iterator();
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while (i.hasNext())
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{
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processNode( i.next(), n.superName );
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}
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}
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DefaultPackageClassNameRemapper remapper = new DefaultPackageClassNameRemapper();
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remapper.inputOutput.put( "appeng/api/parts/LayerBase", n.superName );
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remapper.inputOutput.put( originalName, n.name );
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n.accept( new RemappingClassAdapter( cw, remapper ) );
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// n.accept( cw );
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// n.accept( new TraceClassVisitor( new PrintWriter( System.out ) ) );
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byte[] barray = cw.toByteArray();
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int size = barray.length;
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Class nclass = loadClass( n.name.replace( "/", "." ), barray );
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try
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{
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Object fish = nclass.newInstance();
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Class rootC = Class.forName( root );
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boolean bads = false;
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if ( !rootC.isInstance( fish ) )
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{
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bads = true;
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AELog.severe( "Error, Expected layer to implement " + root + " did not." );
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}
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if ( fish instanceof LayerBase )
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{
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bads = true;
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AELog.severe( "Error, Expected layer to NOT implement LayerBase but it DID." );
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}
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if ( !(fish instanceof TileCableBus) )
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{
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bads = true;
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AELog.severe( "Error, Expected layer to implement TileCableBus did not." );
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}
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if ( !(fish instanceof TileEntity) )
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{
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bads = true;
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AELog.severe( "Error, Expected layer to implement TileEntity did not." );
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}
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if ( !bads )
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{
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AELog.info( "Layer: " + n.name + " loaded successfully - " + size + " bytes" );
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}
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}
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catch (Throwable t)
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{
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AELog.severe( "Layer: " + n.name + " Failed." );
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t.printStackTrace();
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}
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roots.put( fullPath, nclass );
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return nclass;
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}
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private void processNode(AbstractInsnNode next, String nePar)
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{
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if ( next instanceof MethodInsnNode )
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{
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MethodInsnNode min = (MethodInsnNode) next;
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if ( min.owner.equals( "appeng/api/parts/LayerBase" ) )
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{
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min.owner = nePar;
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}
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}
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}
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@Override
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public void setItemBusRenderer(IPartItem i)
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{
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if ( Platform.isClient() && i instanceof Item )
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MinecraftForgeClient.registerItemRenderer( ((Item) i).itemID, BusRenderer.instance );
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}
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@Override
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public boolean placeBus(ItemStack is, int x, int y, int z, int side, EntityPlayer player, World w)
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{
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return PartPlacement.place( is, x, y, z, side, player, w, PartPlacement.PlaceType.PLACE_ITEM, 0 );
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}
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@Override
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public boolean registerNewLayer(String layer, Class<?> layerInterface)
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{
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if ( interfaces2Layer.get( layerInterface ) == null )
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{
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desc.add( layerInterface.getName() );
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interfaces2Layer.put( layerInterface, layer );
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}
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else
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AELog.info( "Layer " + layer + " not registered, " + layerInterface.getName() + " aready has a layer." );
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return false;
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}
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}
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