Dynamic language

[pohanl at my-deja.com]

The future of languages.

As you all know, the history of languages started with instruction
codes for a machine.  These were very basic operations like the
following...

Load 001 R1  <- put 1 in storage 1(register 1)
Load 002 R2  <- put 2 in storage 2 (register 2)
Add R1 R2    <- add storage 2 to storage 1 and put results in storage 1


Of course, this is assembly.  Which is translated to
machine language..

005 001 001
005 002 002
006 001 002

(assuming 005 = Load, 006 = Add).

Since machine language are just bytes, you can convert them to
binary...

00000101 00000001 00000001
00000101 00000010 00000010
00000110 00000001 00000010

These are fed to the processor of the CPU (Central Processing Unit)
which understand instruction of Load, Add, etc.  and follows
what the instructions tell it to do.  Those individual bits trigger
events in the transistors.  So you are actually talking to transistors
if you think low enough.


Well.  If you notice the above language follows a particular syntax,
namely Operator Operand Operand.  A B B
If you construct a grammar tree for this... it looks like so...

Program=>Statements
Statements=>Statement Statements
Statement=>Operator Operand Operand
Operator=>Load | Add | Sub | Jump | etc
Operand=>R1 | R2 | A1 | etc

Of course, you can create the language of Basic using a different
grammar set.  C has its own, every language has one.

But have you noticed something?  All the languages in the world
has a fixed grammar.  The only one that comes close to being dynamic is
Lisp.  But even in lisp you must follow the recursive syntax, and you
are bound to it for creating new functions.

Well, I happen to have created a new language with a dynamic
grammar tree.  You can prune add grammar anywhere in it.
The most scrary and interesting thing about it is that it
has the potential to be alive "living".  All it needs is a source for
replacing any piece in the LHS (left side of the grammar tree), and a
source for food (something to parse its grammar on, in
computer language it is called the program).  It can obtain both either
manually (you feed it), or it can grab it from a source
(like the internet webpages)

It can live on the internet following webpages.  It can understand html
format (and its links).  And it can understand text.  So
for example, it follows a link to a regular text (which has sentences
with periods, etc), and it will eventually hit upon a http link
and it can go there if it wants.  It has rudimentary english
grammar capability etc.

But back to the dynamic nature of its grammar tree.  Because it is
dynamic, it can be pruned and spliced internally, new grammar trees can
be created.  It can understand C, C++, pascal, etc if you feed it that
grammar.

The only things that come up is endless recursion.  A bonus is
that when it has a choice of following two paths, it can use
random path.  If it gets it nowwhere (not settling down to a matching
tree node) in a certain iteration, that prune of the tree is considered
bad (a bad mutation), so it is removed (it dies).  It can keep track of
good paths for keeps.  Eventually based on percentages, the random
paths narrow down to useful grammars.

Actions.  Well what can it do?  It can interpret languages and
execute if it has a way to hook into the CPU and tell it to
do stuff.  From there it needs a starting point.  You can feed
it a program for it to interpret (like a perl language or a
C program, or a html link), and off it goes following its
intstructions. now and then it encounters a part it doesn't understand
from
its food.  From then it has a choice of either incorporating the new
tree token or discard it.  (you can set the mutation rate).
Note that it can be set to retain a lot.

This thing can crawl to your machine and live there if it has
hooks to your machine.  For example... this is a path it would
take if it wants to reproduce children...

On my windows machine it is running on an Intel cpu (it understands
this language).  To migrate to another machine, it would need
access to your machine's CPU.  Most computers talk http and tcp/ip.
Well, if the food is html pages, it has instant access to all the
computers on the internet that has a webservers and from there
it can find ftp servers (using ftp:// tokens).  From its base machine
it can ftp itself to public ftp servers as pure executables of
itself for intel cpus.  From there it has a chance to live again if
someone downloads it and runs it.

it just happens that it understand ftp commands

start=>statements
statements=>statement statements
statement=>operator file
operator=>put | get | etc
file=>[a-z.]*

There is the grammar for execution...

response=>error | ok | etc
error=>"cannot find"
ok=>"file transferred.."
etc.

a new grammar is simply an extention of things it found but
has no node to parse from in its internal grammar tree.
Because it is a living grammar, it can utilize useful languages it
parsed and incorporate that into its own grammar tree.

a=b | newgrammar
newgrammar=>(obtained from parsing food)

eventually if this part of the tree is successful elsewhere it is
retained (based on percentage, etc)

If it cannot have children, then it can just live on one machine and
basically grow and mutate itself.  It can understand everthing
eventually.  Even wave files (sound files) have a strict structure with
a header, begin wave sound and end file.  html has <html> for beginning
and </html> for ending.  C executables have Data Segment, Address
Segment, where to load it into memory, etc. C source
have main(argc, argcv) etc.  So it can be in a growing mode, or
execution mode.  It can execute code (any language, if you feed it the
grammar, or it finds out on its own) or run native cpu code, or it can
just grow, understand the grammar for some new food it got and create
grammar trees from it to extend itself.

Here is an interesting website: http://www.edepot.com
There is a non-living version of the grammar there
(It was useful as a glossary, so I made it live on disucssion
forum board pages, but it is non-living, so you must manually
give it new grammar by inputing into the input box.).
You can try it out on the discussion forums.  A more
direct link is http://www.edepot.com/phl.html
Check out the eGlossary and add a grammar
(and then visit a discussion forum
and create a message the eGlossary can or understand)
(you may need to manually put a grammar in)

The living mode still working on.  (I'm using it
as a backend as a dynamic webpage language).



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