vv
(Redirected from V^v)
vv is an esolang created by User:Username1234.
Brief intro
There are only two useful characters in this language: v and ^. If you want to write annotation, you need to write it behind a )).
Operators
^ separates the operators so all you need to care about is the number of v in every operator.
| Number | Meaning |
|---|---|
| 1 | Push the number 1 into the stack
|
| 2 | Pop the top of the stack |
| 3 | Print the top of the stack |
| 4 | Change the ASCII of the top of the stack by one |
| 5 | Change the ASCII of the top of the stack by negative one |
| 6 | Change the top to (the ASCII of the top element)the ASCII of the top element mod 128 |
| 7 | End of the programme |
Examples
Print out "CCF"
v^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvv^vv^v^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvv^vv^v^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvv^vv^vvvvvvv
Hello World
v^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvv^vv^v^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvv^vv^v^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvv^vv^v^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvv^vv^v^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvv^vv^v^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvv^vv^v^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvv^vv^v^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvv^vv^v^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvv^vv^v^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvv^vv^v^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvv^vv^v^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvv^vv^v^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvvv^vvv^vv^vvvvvvv
Implementation
The following program in Common Lisp offers an interpreter for the language:
(defun interpret-v^v (code &aux (code-length (length code)) (position 0) (command 0) (stack NIL))
"Executes the piece of v^v CODE and returns NIL."
(declare (type string code) (type fixnum code-length position) (type (integer 0 *) command) (type list stack))
(symbol-macrolet ((finished-p (>= position code-length))
(token (the character (char code position))))
(flet ((execute-command ()
(case command
(1 (push command stack))
(2 (pop stack))
(3 (write-char (code-char (first stack))))
(4 (incf (first stack)))
(5 (decf (first stack)))
(6 (setf (first stack) (mod (expt (first stack) (first stack)) 128)))
(7 (setf position code-length))
(otherwise (error "Invalid command: ~d." command)))
(values)))
(loop until finished-p do
(case token
(#\^
(execute-command)
(setf command 0)
(incf position))
(#\v
(setf command
(loop while (and (not finished-p) (char= token #\v))
do (incf position)
count 1)))
(#\)
(incf position)
(if (and (not finished-p) (char= token #\)))
(loop until finished-p do (incf position))
(error "Invalid token starting with ')'.")))
(otherwise
(error "Invalid token ~s at position ~d." token position)))
finally (execute-command)))))
The arduous process of generating a message output program can be alleviated by the following function:
(defun build-message-program (text &key (destination NIL))
"Creates a v^v program which outputs the TEXT and writes the code to
the DESTINATION, returning for a non-NIL DESTINATION the NIL value,
otherwise responding with a fresh string containing the result."
(declare (type string text) (type (or null (eql T) stream string) destination))
(the (or null string)
(if destination
(loop for character of-type character across text do
;; Push the number one (1) unto the stack.
(format destination "v^")
;; Increment the one-valued top stack element until it matches
;; the CHARACTER's ASCII code.
(loop repeat (1- (char-code character)) do
(format destination "vvvv^"))
;; Print the top of the stack as an ASCII character.
(format destination "vvv^")
;; Pop the just printed top of the stack.
(format destination "vv^")
;; Write program end.
finally (format destination "vvvvvvv"))
(with-output-to-string (output)
(declare (type string-stream output))
(build-message-program text :destination output)))))
The follwing is a Python interpreter for the esolang:
def interpret(code):
token=[i.count('v') for i in code.split('))')[0].split('^')]
stack=[]
for i in token:
if i==1:
stack.append(1)
if i==2:
stack.pop()
if i==3:
print(chr(stack[-1]),end='')
if i==4:
stack[-1]+=1
if i==5:
stack[-1]-=1
if i==6:
stack[-1]=stack[-1]**stack[-1]%128
if i==7:
return
interpret(input())
And an output generator:
print('^'.join(sum([['v']+['vvvv']*(ord(i)-1)+['vvv','vv'] for i in input()],[])+['vvvvvvv']))