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List of issues#1605 P-code stack
Author: 
Kuroneko
KuronekoDate created:
Type: question
Visibility: Everybody
Assigned to:
Labels: P-code
State: closed 
Sorry for maybe stupid question, but...
What does the p-code stack like?
If say "push", "pop" and other opcodes that interact with stack, stack in ActionScript3
Byte-code Assembler its a similar like stack in real assembler or something other
(imaginary picture of this stack for correct understanding about how it works, not
technical specificity)? If its not difficult, can you send a most correct (as for you)
picture with p-code stack, if you please?
Something like this: https://openclipart.org/people/alexander256/stalactites.svg
Or this: https://i.stack.imgur.com/CaOq1.png
But for p-code and p-code stack
Its really important for me, so thanks in advance for answer
It's classic stack data structure as described in
https://en.wikipedia.org/wiki/Stack_(abstract_data_type)
You push values into it and then you call other instructions which work with stack - they
pop() needed arguments off stack and then push results.
pushbyte 1 ; stack after: 1
pushbyte 5 ; stack after: 5, 1
add ; stack after: 1 + 5
setlocal 1 ; stack after: [empty] (1+5 is now stored in register 1)
There's also scope stack in AS3 P-code for handling scope. (pushscope instruction)
State: new→opened
Thank you for your explanation, I've always wondered to know how "magic" word "stack"
works in p-code, really thx a lot)
Have a nice day
State: opened→closed