From mboxrd@z Thu Jan  1 00:00:00 1970
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From: Pietro Gagliardi <pietro10@mac.com>
To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net>
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Date: Sun,  4 May 2008 21:45:56 -0400
References: <20080504074224.C796685B2@okapi.maths.tcd.ie>
	<a3d8afe4f563e4cb86a4abba55d95d2e@proxima.alt.za>
	<775b8d190805040518w947ffc6g12fbe4da693de8a1@mail.gmail.com>
	<2CA5005D-3B72-44C0-B1A5-89F72C2C6E7F@mac.com>
	<a4e6962a0805040803y37e6111cg3e872ea8875b582b@mail.gmail.com>
Subject: Re: [9fans] A new language for Plan 9
Topicbox-Message-UUID: 9eeb0cc4-ead3-11e9-9d60-3106f5b1d025

I put up a new Bentley. This has support for, hopefully, all control
structures:

	if e then					if..then
		s
	if e then					if..then..else
			s
		else
			s
	while e do				while..do
		s
	loop					loop (infinite loop)
		s
	repeat					repeat..until (like do..while(!))
			s
		until e
	for i := e to e [by e] do			like in pascal, but with steps
		s
	for i := e downto e [by e] do	like in pascal, but with steps
		s

The file asm.b is a simple demonstration of the last two.

The Bentley compiler, when built, is named #b, so the 386 compiler
(and the only one so far) is 8b. The name is changed on build. This is
used exactly like the C compilers:

	8b asm.b
	8l -o asm asm.8
	asm

The -S option produces an Assembly listing, but does not build (the C
compilers do).

My only regret so far is that for loops generate a medium sized piece
of spaghetti (yum). See the comment in 8.c for details.

Set for the next release: arguments in procedures, functions, a more
sophisticated stack size algorithm, bit arrays.