PoGo

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PoGo is an esoteric programming language designed by User:Madk.

PoGo Icon.png

Characteristics

PoGo operates on four separate stacks.

  • po stack - used to store go (jump) destinations
  • reserve po stack - used to store po values for later
  • memory stack - purposes sort of like a register except it's a stack
  • secondary memory stack - because the more the merrier

Oh, and there's also a 2d memory array.

Commands

po - add current position in code to the top of the po stack
go - pop the most recent po location off the stack and jump there
no - pop the most recent po location off the stack as to remove it
bi - pop the most recent po location and push it onto the reserve po stack
hi - pop the most recent po from the reserve po stack and push it onto the po stack
wy - switch the top and second values of the po stack
ok - pop the most recent po location off the stack and place the value in the current memory cell
in - push the value in the current memory cell onto the po stack
du - duplicate the top member of the po stack
bo - move the top value from the top of the po stack to the bottom
uw - move the bottom value from the bottom of the po stack to the top
yp - switch the po stack with the reserve po stack
pe - put the total number of values on the po stack into the current memory cell

to - execute the following command only if the value in the current memory cell is >0
un - execute the following command only if the value in the current memory cell is =0
ni - execute the following command only if the value in the current memory cell is <0
ki - skip the number of following commands as specified by the value in the current memory cell

nu - move the memory pointer north
su - move the memory pointer south
tu - move the memory pointer east
wu - move the memory pointer west

le - rotate the entire horizontal row of the memory array the memory pointer is currently in left once. 
(also has the effect of moving the pointer right once)
ri - rotate the entire horizontal row of the memory array the memory pointer is currently in right once. 
(also has the effect of moving the pointer left once)
up - rotate the entire vertical row of the memory array the memory pointer is currently in up once. 
(also has the effect of moving the pointer down once)
do - rotate the entire vertical row of the memory array the memory pointer is currently in down once. 
(also has the effect of moving the pointer up once)

op - pop from the memory stack and place the value in the current memory cell
os - push the value from the current memory cell onto the stack
ow - pop a value from the memory stack and do nothing with it, as to destroy it
an - duplicate the top member of the memory stack
as - switch the top and second values of the memory stack
ob - move the top value from the top of the memory stack to the bottom
bu - move the bottom value from the bottom of the memory stack to the top
te - put the total number of values on the memory stack into the current memory cell
wi - switch the memory stack with the secondary memory stack

ad - add the top two values of the memory stack and push the result (+)
ub - subtract the second from the top value of the memory stack and push the result (-)
mu - multiply the top two values of the memory stack and push the result (*)
vi - divide the top by the second value of the memory stack and push the result (/)
ke - raise the top to the second power from the memory stack and push the result (^)
do - modulo the top by the second value of the memory stack and push the result (%)
da - binary and the top two values of the memory stack and push the result
or - binary or the top two values of the memory stack and push the result
xo - binary xor the top two values of the memory stack and push the result

en - increment the memory cell under the memory pointer
de - decrement the memory cell under the memory pointer
ne - negate the memory cell under the memory pointer
ab - make the memory cell under the memory pointer positive (abs)
be - bit shift the memory cell under the memory pointer left once
by - bit shift the memory cell under the memory pointer right once
re - rotate the bits of the memory cell under the memory pointer left once
ry - rotate the bits of the memory cell under the memory pointer right once
ot - flip all the bits of the memory cell under the memory pointer
me - flip the leftmost bit of the memory cell under the memory pointer
my - flip the rightmost bit of the memory cell under the memory pointer

si - push the sign of the current memory cell onto the memory stack
he - push the masculinity of the current memory cell onto the memory stack (Chuck Norris may cause stack overflow)

qi - output "poqigo" to the console
wo - output "Hello, world!" to the console
be - output the lyrics of "99 bottles of beer on the wall" to the console
fi - output the first 16 numbers of the Fibonacci sequence to the console
ko - output the Collatz sequence of the number in the current memory cell to the console
pi - output pi and its first several digits to the console
ra - worship the sun god
am - think and therefore be (become self-aware)
ho - mistakenly put one before bros
is - have an existentialist crisis

if - accept numerical input and place the result into the current memory cell
ic - accept ASCII input and place the value of the first character into the current memory cell
uf - output the value in the current memory cell as a number
uc - output the value in the current memory cell as a character
ly - print a newline to the console
// this is a comment //

Examples

Hello, world!

wo

Quine

poqigo

Make the coder laugh

ow an go

Alternatively,

po op

or one of any other innumerabe combinations resulting in colorful language.

Cat

po if uf go

Computational class

PoGo can be shown to be Turing-complete through reduction from brainfuck.

< becomes wu
> becomes tu
+ becomes en
- becomes de
[ and ] become a complicated and probably very arbitary mess of po's and go's and some other things (see discussion page)
. becomes uc
, becomes ic

External resources

Download PoGo interpreter