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Re: virtual method lookup and accessibility

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On Fri, 12 Aug 2011 02:21:00 -0700 (PDT), Jay Foad
<jay.foad@gmail.com> wrote, quoted or indirectly quoted someone who
said :

>The language spec section 15.12.4.4 "Locate Method to Invoke" (http://
>java.sun.com/docs/books/jls/third_edition/html/

Gosling tried to leave as scope as possible for innovation, so the
spec is pretty vague and abstract.  To understand how a concrete
implementation might work, try reading some of Bjarne Stroustrup's
books.  His Design and Evolution of C++ and the tech ref manual
explain how virtual methods can be implemented. Look for VTBL in the
index.  I had an orgasmic Ah Ha moment when VTBLs suddenly clicked.
I had tried to invented them on my own unsuccessfully for my own
language.

A further technique I used earlier was studying assembler listings
from the Jet compiler.  They no longer let you see the code. Customers
were worried it might make binaries easier to crack.
-- 
Roedy Green Canadian Mind Products
http://mindprod.com
Most of computer code is for telling the computer
what do if some very particular thing goes wrong. 

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virtual method lookup and accessibility Jay Foad <jay.foad@gmail.com> - 2011-08-12 02:21 -0700
  Re: virtual method lookup and accessibility kedar mhaswade <kedar.mhaswade@gmail.com> - 2011-08-12 07:20 -0700
  Re: virtual method lookup and accessibility Lew <lewbloch@gmail.com> - 2011-08-12 06:55 -0700
  Re: virtual method lookup and accessibility Jay Foad <jay.foad@gmail.com> - 2011-08-12 08:27 -0700
    Re: virtual method lookup and accessibility Lew <lewbloch@gmail.com> - 2011-08-12 14:46 -0700
  Re: virtual method lookup and accessibility Roedy Green <see_website@mindprod.com.invalid> - 2011-08-12 14:43 -0700

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