Dish

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Dish (or Dead fISH) is a deadfish inspired esolang created by User:Ractangle

Syntax

Command	Action
i	deadfish i command.
d	if a!=0, decrement a. Else skip to the next d.
s	Push the accumulator to the stack.
o	deadfish o command.
h	Halt program.
+	Adds two stack elements together and pushes the result into the stack.
-	Same as + but does subtraction instead
b	Goes to the previous d.
u	Gets user input.
v	Sets the value on the stack and gets popped.
~	Discards the top value on the stack.

Examples

The powers of two

iiidss+vob

Implementations

stack=[]
p=a=0
code=input()

while len(code)!=p:
    if code[p]=="i": a+=1
    elif code[p]=="d":
        if a:a+=1
        else:p=code.index("d",p+1)
    elif code[p]=="s": stack.append(a)
    elif code[p]=="o": print(a)
    elif code[p]=="h": break
    elif code[p]=="+": stack.append(stack.pop()+stack.pop())
    elif code[p]=="-": stack.append(stack.pop()-stack.pop())
    elif code[p]=="b": p=code.index("d",0,p-1)
    elif code[p]=="u": stack.append(int(input()))
    elif code[p]=="v": a=stack.pop()
    elif code[p]=="~": stack.pop()
    p+=1