README

Active Oberon Native Compiler (Version 2019)

This is the start of a open active oberon compiler for Windows, Linux and Mac. First supporting ARM aarch64 binary code and inline assembler. We have started on the bootstrap compiler written in object pascal that will be used to compile the final compiler written nativly in Active Oberon.

The transition from Pascal version to Active Oberon version will be mostly minor.

You need to install fpc (Free Pascal Compiler) for your system to build the bootstrap compiler. For now i use WSL for Windows with Ubuntu on an ARM based laptop and Visual Code for development.

To build:

• Install WSL under Windows with Ubuntu or directly on a Linux machine.
• Install fpc (Free Pascal Compiler) e.g. 'apt install fpc'
• Execute 'build.sh'
• Resulting bootstrap binary will be in bin/ folder.

Unittesting

All UnitTests can be executed by executing build.sh

This will build the Compiler and the test harness. Both binaries ends up in bin folder.

• Execute bin/test_active_oberon_compiler to just do the UnitTests.

Language details

Reserved keywords

address	alias	array	await	begin	by	cell	cellnet
case	code	definition	do	div	end	enum	else
elsif	exit	extern	false	for	finally	if	imag
in	is	import	loop	module	mod	nil	object
of	or	out	operator	pointer	procedure	port	repeat
record	return	result	self	then	true	to	type
until	var	while	with

Operators or delimiters

<	<=	=	>=	>	#	:=	:	;	..	.
+	+*	-	^	&	?	??	!	!!	<<	>>
>>?	.<	.<=	.>=	.>	.+	.*	.=	.#	~
\	´	(	)	[	]	{	}	**	*	/

Reserved procedures and data types

abs	addressof	all	any	ash	assert	boolean
cap	cas	char	chr	complex	complex32	complex64
copy	dec	decmul	dim	entier	entierh	excl
first	float32	float64	floor	halt	im	inc
incl	incmul	incr	integer	integerset	last	len
long	longinteger	lsh	max	min	odd
range	re	real	reshape	rol	ror	rot
set	set8	set16	set32	set64	shl	short
shr	signed8	signed16	signed32	signed64	size	sizeof
step	sum	unsigned8	unsigned16	unsigned32	unsigned32	unsigned64