How It Works - Runtime - Jython

Java source (using jython)

// Jad home page: http://www.geocities.com/kpdus/jad.html
// Decompiler options: packimports(3) 
// Source File Name:   /home/bzimmer/development/ziclix/jython-presentation/ex_runtime.py

import org.python.core.*;

public class e.PyObject extends PyFunctionTable
    implements PyRunnable
{

    public PyObject f$0(PyFrame pyframe)
    {
        pyframe.setglobal("__file__", _0);
        pyframe.setline(1);
        PyObject pyobject = _1._add(_1);
        pyframe.setlocal("a", pyobject);
        pyobject = null;
        pyframe.f_lasti = -1;
        return Py.None;
    }

    public PyCode getMain()
    {
        return f$0;
    }

    public PyObject call_function(int i, PyFrame pyframe)
    {
        switch(i)
        {
        case 0: // '\0'
            return f$0(pyframe);
        }
        return null;
    }

    static final ng self;
    static final PyString _0 = Py.newString("/home/bzimmer/development/ziclix/jython-presentation/ex_runtime.py");
    static final PyInteger _1 = Py.newInteger(1);
    static final PyCode f$0;

    static
    {
        self = new <init>();
        String as[];
        f$0 = Py.newCode(0, as = new String[0], "/home/bzimmer/development/ziclix/jython-presentation/ex_runtime.py", "?", 0, false, false, self, 0, null, null, 0, 0);
    }

    public e.PyObject()
    {
    }
}

ex_runtime$py.decompiled.txt

Java bytecode source (using jython)

// Jad home page: http://www.geocities.com/kpdus/jad.html
// Decompiler options: packimports(3) disassembler 
// Source File Name:   /home/bzimmer/development/ziclix/jython-presentation/ex_runtime.py

import org.python.core.*;

public class e.PyObject extends PyFunctionTable
    implements PyRunnable
{

    public PyObject f$0(PyFrame pyframe)
    {
    //    0    0:aload_1         
    //    1    1:ldc1            #11  <String "__file__">
    //    2    3:getstatic       #17  <Field PyString _0>
    //    3    6:invokevirtual   #9   <Method void PyFrame.setglobal(String, PyObject)>
    //    4    9:aload_1         
    //    5   10:iconst_1        
    //    6   11:invokevirtual   #22  <Method void PyFrame.setline(int)>
    //    7   14:getstatic       #26  <Field PyInteger _1>
    //    8   17:getstatic       #26  <Field PyInteger _1>
    //    9   20:invokevirtual   #32  <Method PyObject PyObject._add(PyObject)>
    //   10   23:astore_2        
    //   11   24:aload_1         
    //   12   25:ldc1            #34  <String "a">
    //   13   27:aload_2         
    //   14   28:invokevirtual   #37  <Method void PyFrame.setlocal(String, PyObject)>
    //   15   31:aconst_null     
    //   16   32:astore_2        
    //   17   33:aload_1         
    //   18   34:iconst_m1       
    //   19   35:putfield        #41  <Field int PyFrame.f_lasti>
    //   20   38:getstatic       #47  <Field PyObject Py.None>
    //   21   41:areturn         
    }

    public e.Py.None()
    {
    //    0    0:aload_0         
    //    1    1:invokespecial   #53  <Method void PyFunctionTable()>
    //    2    4:return          
    }

    public PyCode getMain()
    {
    //    0    0:getstatic       #58  <Field PyCode f$0>
    //    1    3:areturn         
    }

    static
    {
    //    0    0:new             #13  <Class ex_runtime$py>
    //    1    3:dup             
    //    2    4:invokespecial   #62  <Method void ex_runtime$py()>
    //    3    7:putstatic       #64  <Field ex_runtime$py self>
    //    4   10:ldc1            #66  <String "/home/bzimmer/development/ziclix/jython-presentation/ex_runtime.py">
    //    5   12:invokestatic    #70  <Method PyString Py.newString(String)>
    //    6   15:putstatic       #17  <Field PyString _0>
    //    7   18:iconst_1        
    //    8   19:invokestatic    #74  <Method PyInteger Py.newInteger(int)>
    //    9   22:putstatic       #26  <Field PyInteger _1>
    //   10   25:iconst_0        
    //   11   26:iconst_0        
    //   12   27:anewarray       String[]
    //   13   30:astore_0        
    //   14   31:aload_0         
    //   15   32:ldc1            #66  <String "/home/bzimmer/development/ziclix/jython-presentation/ex_runtime.py">
    //   16   34:ldc1            #78  <String "?">
    //   17   36:iconst_0        
    //   18   37:iconst_0        
    //   19   38:iconst_0        
    //   20   39:getstatic       #64  <Field ex_runtime$py self>
    //   21   42:iconst_0        
    //   22   43:aconst_null     
    //   23   44:aconst_null     
    //   24   45:iconst_0        
    //   25   46:iconst_0        
    //   26   47:invokestatic    #82  <Method PyCode Py.newCode(int, String[], String, String, int, boolean, boolean, PyFunctionTable, int, String[], String[], int, int)>
    //   27   50:putstatic       #58  <Field PyCode f$0>
    //   28   53:return          
    }

    public PyObject call_function(int i, PyFrame pyframe)
    {
    //    0    0:iload_1         
    //    1    1:tableswitch     0 0: default 26
    //                   0 20
    //    2   20:aload_0         
    //    3   21:aload_2         
    //    4   22:invokevirtual   #86  <Method PyObject f$0(PyFrame)>
    //    5   25:areturn         
    //    6   26:aconst_null     
    //    7   27:areturn         
    }

    static final e.PyFrame self;
    static final PyString _0;
    static final PyInteger _1;
    static final PyCode f$0;
}

ex_runtime$py.bytecode.txt