Some thinking about execution

src/main/java/info/sigterm/deob/attributes/Attributes.java

@@ -0,0 +1,106 @@
+package info.sigterm.deob.attributes;
+
+import info.sigterm.deob.ClassFile;
+import info.sigterm.deob.Field;
+import info.sigterm.deob.Method;
+import info.sigterm.deob.pool.UTF8;
+
+import java.io.DataInputStream;
+import java.io.IOException;
+import java.lang.reflect.Constructor;
+
+public class Attributes
+{
+	private ClassFile classFile;
+	private Field field;
+	private Method method;
+	private Code code;
+
+	private int count;
+	private Attribute[] attributes;
+
+	public Attributes(ClassFile cf) throws IOException
+	{
+		classFile = cf;
+
+		load();
+	}
+
+	public Attributes(Field f) throws IOException
+	{
+		field = f;
+
+		load();
+	}
+
+	public Attributes(Method m) throws IOException
+	{
+		method = m;
+
+		load();
+	}
+
+	public Attributes(Code c) throws IOException
+	{
+		code = c;
+
+		load();
+	}
+
+	public Attribute findType(AttributeType type)
+	{
+		for (Attribute a : attributes)
+			if (a.getType() == type)
+				return a;
+		return null;
+	}
+
+	public ClassFile getClassFile()
+	{
+		if (classFile != null)
+			return classFile;
+
+		if (field != null)
+			return field.getFields().getClassFile();
+
+		if (method != null)
+			return method.getMethods().getClassFile();
+
+		if (code != null)
+			return code.getAttributes().getClassFile();
+
+		return null;
+	}
+
+	public DataInputStream getStream()
+	{
+		return getClassFile().getStream();
+	}
+
+	private void load() throws IOException
+	{
+		DataInputStream is = getStream();
+
+		count = is.readUnsignedShort();
+		attributes = new Attribute[count];
+
+		for (int i = 0; i < count; ++i)
+		{
+			int nameIndex = is.readUnsignedShort();
+			UTF8 name = (UTF8) getClassFile().getPool().getEntry(nameIndex);
+
+			AttributeType type = AttributeType.findType(name.getValue());
+			try
+			{
+				Constructor<? extends Attribute> con = type.getAttributeClass().getConstructor(new Class[] { Attributes.class });
+				Attribute attr = con.newInstance(this);
+
+				attributes[i] = attr;
+			}
+			catch (Exception ex)
+			{
+				throw new IOException(ex);
+			}
+		}
+	}
+}