Flowchart

Flowchart is an esolang created by User:Aadenboy directly based on flowcharts.

Structure

Flowchart works on a 2D space, with actions connected by lines. Programs start on the first ( ) node, of which is the top-most left-most node. Flowchart allows for multiple program pointers to run in parallel, order going from top-most left-most, traveling right, then downwards. Program halts once all pointers halt. When a pointer re-enters a node or path it's been through before, it will go in the direction that it had previously traveled unless it were to turn it 180º.

The memory of Flowchart works on a tape of infinite deques, and a single register for each pointer, each holding bits (0 and 1). A pointer's register is independent to it and can hold a single bit, however all pointers share the same stacks.

The ( ) node is the only node that allows splitting.

Node	Name	Description
( )	Start/Fork/No-op/End	A multi-functional node. If there are multiple paths, it will create new pointers for each path.
[ ]	Toggle	Toggles the value currently in the register. If it is empty, it's set to 1.
{ }	Clear	Clears the value currently in the register, making it empty.
< >	Switch	A switch. Reads from the register. If it is 0, the pointer takes the path to the right. If it is 1, the pointer takes the path to the left. If it is empty, the pointer continues forward.
/ /	Input	Read a single bit from input, storing it in the register. This is empty if there are no more bits to read.
\ \	Output	Output a single bit from the register.
\[ ]/	Push top	Clear the register, and push its value to the top of the currently selected deque.
/[ ]\	Push bottom	Clear the register, and push its value to the bottom of the currently selected deque.
\{ }/	Pop top	Clear the register, and pop the top of the currently selected deque to the register.
/{ }\	Pop bottom	Clear the register, and pop from the bottom of the currently selected deque to the register.
< ]	Switch left	Change the currently selected deque to the one previous to it.
[ >	Switch right	Change the currently selected deque to the one after it.

Examples

Truth machine

     ( )──┐        
         / /       
          │        
( )─\ \──< >┬─\ \─┐
            │     │
            └─────┘

Cat program

( )──┐   
  ┌─/ /─┐
  │  │  │
  │\[ ]/│
  │  │  │
  └─< >─┘
     │   
  ┌/{ }\┐
  │  │  │
  │ \ \ │
  │  │  │
  └─< >─┘
     │   
    ( )