121 lines
3.7 KiB
Java
121 lines
3.7 KiB
Java
package appeng.transformer;
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import java.util.Iterator;
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import net.minecraft.launchwrapper.IClassTransformer;
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import org.apache.logging.log4j.Level;
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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.Opcodes;
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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.InsnNode;
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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 org.objectweb.asm.tree.VarInsnNode;
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import com.google.common.collect.HashMultimap;
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import com.google.common.collect.Multimap;
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import cpw.mods.fml.relauncher.FMLRelaunchLog;
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public class AppEngASMTransformer implements IClassTransformer
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{
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Multimap<String, String> privateToPublicMethods = HashMultimap.create();
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public AppEngASMTransformer() {
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privateToPublicMethods.put( "net.minecraft.client.gui.inventory.GuiContainer", "func_146977_a" );
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privateToPublicMethods.put( "net.minecraft.client.gui.inventory.GuiContainer", "a" );
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}
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@Override
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public byte[] transform(String name, String transformedName, byte[] basicClass)
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{
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try
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{
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if ( transformedName != null && privateToPublicMethods.containsKey( transformedName ) )
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{
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ClassNode classNode = new ClassNode();
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ClassReader classReader = new ClassReader( basicClass );
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classReader.accept( classNode, 0 );
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for (String Set : privateToPublicMethods.get( transformedName ))
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{
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makePublic( classNode, Set );
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}
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// CALL VIRUAL!
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if ( transformedName.equals( "net.minecraft.client.gui.inventory.GuiContainer" ) )
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{
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for (MethodNode mn : classNode.methods)
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{
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if ( mn.name.equals( "func_146977_a" ) || (mn.name.equals( "a" ) && mn.desc.equals( "(Lzk;)V" )) )
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{
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MethodNode newNode = new MethodNode( Opcodes.ACC_PUBLIC, "func_146977_a_original", mn.desc, mn.signature, new String[0] );
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newNode.instructions.add( new VarInsnNode( Opcodes.ALOAD, 0 ) );
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newNode.instructions.add( new VarInsnNode( Opcodes.ALOAD, 1 ) );
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newNode.instructions.add( new MethodInsnNode( Opcodes.INVOKESPECIAL, classNode.name, mn.name, mn.desc ) );
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newNode.instructions.add( new InsnNode( Opcodes.RETURN ) );
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log( newNode.name + newNode.desc + " - New Method" );
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classNode.methods.add( newNode );
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break;
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}
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}
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for (MethodNode mn : classNode.methods)
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{
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if ( mn.name.equals( "func_73863_a" ) || mn.name.equals( "drawScreen" ) || (mn.name.equals( "a" ) && mn.desc.equals( "(IIF)V" )) )
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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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AbstractInsnNode in = i.next();
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if ( in.getOpcode() == Opcodes.INVOKESPECIAL )
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{
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MethodInsnNode n = (MethodInsnNode) in;
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if ( n.name.equals( "func_146977_a" ) || (n.name.equals( "a" ) && n.desc.equals( "(Lzk;)V" )) )
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{
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log( n.name + n.desc + " - Invoke Virtual" );
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mn.instructions.insertBefore( n, new MethodInsnNode( Opcodes.INVOKEVIRTUAL, n.owner, n.name, n.desc ) );
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mn.instructions.remove( in );
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break;
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}
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}
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}
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}
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}
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}
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ClassWriter writer = new ClassWriter( ClassWriter.COMPUTE_MAXS );
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classNode.accept( writer );
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return writer.toByteArray();
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}
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}
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catch (Throwable t)
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{
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}
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return basicClass;
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}
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private void log(String string)
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{
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FMLRelaunchLog.log( "AE2-CORE", Level.INFO, string );
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}
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private void makePublic(ClassNode classNode, String set)
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{
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for (MethodNode mn : classNode.methods)
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{
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if ( mn.name.equals( set ) )
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{
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mn.access = Opcodes.ACC_PUBLIC;
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log( mn.name + mn.desc + " - Public" );
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}
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}
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}
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}
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