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package cuchaz.enigma.analysis.index;
import cuchaz.enigma.translation.representation.AccessFlags;
import cuchaz.enigma.translation.representation.Lambda;
import cuchaz.enigma.translation.representation.MethodDescriptor;
import cuchaz.enigma.translation.representation.Signature;
import cuchaz.enigma.translation.representation.entry.*;
import org.objectweb.asm.*;
public class IndexReferenceVisitor extends ClassVisitor {
private final JarIndexer indexer;
private ClassEntry classEntry;
public IndexReferenceVisitor(JarIndexer indexer, int api) {
super(api);
this.indexer = indexer;
}
@Override
public void visit(int version, int access, String name, String signature, String superName, String[] interfaces) {
this.classEntry = new ClassEntry(name);
}
@Override
public MethodVisitor visitMethod(int access, String name, String desc, String signature, String[] exceptions) {
MethodDefEntry entry = new MethodDefEntry(classEntry, name, new MethodDescriptor(desc), Signature.createSignature(signature), new AccessFlags(access));
return new Method(this.indexer, entry, this.api);
}
private static class Method extends MethodVisitor {
private final JarIndexer indexer;
private final MethodDefEntry callerEntry;
public Method(JarIndexer indexer, MethodDefEntry callerEntry, int api) {
super(api);
this.indexer = indexer;
this.callerEntry = callerEntry;
}
@Override
public void visitFieldInsn(int opcode, String owner, String name, String desc) {
FieldEntry fieldEntry = FieldEntry.parse(owner, name, desc);
this.indexer.indexFieldReference(callerEntry, fieldEntry);
}
@Override
public void visitMethodInsn(int opcode, String owner, String name, String desc, boolean itf) {
MethodEntry methodEntry = MethodEntry.parse(owner, name, desc);
this.indexer.indexMethodReference(callerEntry, methodEntry);
}
private static ParentedEntry<?> getHandleEntry(Handle handle) {
switch (handle.getTag()) {
case Opcodes.H_GETFIELD:
case Opcodes.H_GETSTATIC:
case Opcodes.H_PUTFIELD:
case Opcodes.H_PUTSTATIC:
return FieldEntry.parse(handle.getOwner(), handle.getName(), handle.getDesc());
case Opcodes.H_INVOKEINTERFACE:
case Opcodes.H_INVOKESPECIAL:
case Opcodes.H_INVOKESTATIC:
case Opcodes.H_INVOKEVIRTUAL:
case Opcodes.H_NEWINVOKESPECIAL:
return MethodEntry.parse(handle.getOwner(), handle.getName(), handle.getDesc());
}
throw new RuntimeException("Invalid handle tag " + handle.getTag());
}
@Override
public void visitInvokeDynamicInsn(String name, String desc, Handle bsm, Object... bsmArgs) {
if ("java/lang/invoke/LambdaMetafactory".equals(bsm.getOwner()) && "metafactory".equals(bsm.getName())) {
Type samMethodType = (Type) bsmArgs[0];
Handle implMethod = (Handle) bsmArgs[1];
Type instantiatedMethodType = (Type) bsmArgs[2];
this.indexer.indexLambda(callerEntry, new Lambda(
name,
new MethodDescriptor(desc),
new MethodDescriptor(samMethodType.getDescriptor()),
getHandleEntry(implMethod),
new MethodDescriptor(instantiatedMethodType.getDescriptor())
));
}
}
}
}
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