0b01/portal

portal and portal 2

#Portal

Portal is an esoteric language that loosely implements the Wang B-Machine.

What is this Portal language?

Portal	Description
o	Move the pointer to the other o portal
>	Move the pointer to the right
<	Move the pointer to the left
+	Increment the memory cell under the pointer
-	Decrement the memory cell under the pointer
.	Output the character signified by the cell at the pointer
,	Input a character and store it in the cell at the pointer
]	Move the first o portal to the right
[	Move the last o portal to the left

Portal 2	Description
o	Move the pointer to the other o portal
O	Move the pointer to the other O portal
>	Move the pointer to the right
<	Move the pointer to the left
+	Increment the memory cell under the pointer
-	Decrement the memory cell under the pointer
.	Output the character signified by the cell at the pointer
,	Input a character and store it in the cell at the pointer
]	Move the first o portal to the right
[	Move the last o portal to the left
}	Move the first O portal to the right
{	Move the last O portal to the left

Important note: A pointer does not go in the a portal on the first pass. Check the examples.

Example

###Portal: Prints an ampersand(&):

+++++++++++++o+++++]]]]]o++++++++++++++++++++. 

Code trace:

+++++++++++++o+++++]]]]]o++++++++++++++++++++.
# omitted
+++++++++++++o+++++]]]]]o++++++++++++++++++++.
++++++++++++++o++++]]]]]o++++++++++++++++++++.
+++++++++++++++o+++]]]]]o++++++++++++++++++++.
++++++++++++++++o++]]]]]o++++++++++++++++++++.
+++++++++++++++++o+]]]]]o++++++++++++++++++++.
++++++++++++++++++o]]]]]o++++++++++++++++++++.
++++++++++++++++++o]]]]]o++++++++++++++++++++.
++++++++++++++++++]o]]]]o++++++++++++++++++++.
++++++++++++++++++]]o]]]o++++++++++++++++++++.
++++++++++++++++++]]]o]]o++++++++++++++++++++.
++++++++++++++++++]]]]o]o++++++++++++++++++++.
++++++++++++++++++]]]]]o++++++++++++++++++++.
++++++++++++++++++]]]]]o++++++++++++++++++++.
++++++++++++++++++]]]]]o++++++++++++++++++++.
# omitted
++++++++++++++++++]]]]]o++++++++++++++++++++.

###Portal 2

The following code prints an Ö O with diaeresis

O++++++o----}}o]]O.

Code trace:

O++++++o----}}o]]O.
O++++++o----}}o]]O.
O++++++o----}}o]]O.
O++++++o----}}o]]O.
O++++++o----}}o]]O.
O++++++o----}}o]]O.
O++++++o----}}o]]O.
O++++++o----}}o]]O.
O++++++o----}}o]]O.
O++++++o----}}o]]O.
O++++++o----}}o]]O.
O++++++o----}}o]]O.
+O+++++o----}}o]]O.
++O++++o----}}o]]O.
++O++++o----}}o]]O.
++O++++o----}}o]]O.
++O++++o----}}o]]O.
++O++++o----}}o]]O.
++O++++o----}}o]]O.
+++O+++o----}}o]]O.
++++O++o----}}o]]O.
++++O++o----}}o]]O.
++++O++o----}}o]]O.
++++O++o----}}o]]O.
++++O++o----}}o]]O.
++++O++o----}}o]]O.
+++++O+o----}}o]]O.
++++++Oo----}}o]]O.
++++++Oo----}}o]]O.
++++++Oo----}}o]]O.
++++++Oo----}}o]]O.
++++++Oo----}}o]]O.
++++++Oo----}}o]]O.
++++++oO----}}o]]O.
++++++o-O---}}o]]O.
++++++o-O---}}o]]O.
++++++o-O---}}o]]O.
++++++o-O---}}o]]O.

Run

$  ./portal.py [filename]
$  ./portal2.py [filename]

Help wanted

How do I print Hello World?

Acknowledgement

The python interpreter is a fork of pocmo/Python-Brainfuck.