Rz version 3.5

It has a new syntax, using indentation instead of { } and newline instead of ;
Here is an example of the new form:

fac(n)
if( n == 0 ) return 1
else return n * fac(n-1)

main()
print(fac(10))

It also recognises "syscall". It can compile "syscall" although not being a reserved word. The compiler takes "hint" from the source, by defining an empty function:

syscall()

when the compiler encounter "syscall" it can convert that into (parse tree):

syscall(14,n) => (call syscall 14 #1)
and generate code => get.1 sys.14

syscall is used as an escape hatch to add extra code to the virtual machine.
Including in the package is the virtual machine som v2 x (special) that can execute the output object code of rz35.

Som v2 x syscall

1) syscall(1,a)     print a as integer
2) syscall(2,c)     print c as character (ascii)
3) x = syscall(3)   getchar()
4) syscall(4,s)     gets() get string to s
5) -
6) syscall(6,s)     print string s
7) syscall(7)       stop
13) syscall(13)      stop (compatible with higher version)

last update 26 Sept 2011