A Home Assistant script which interprets brainfuck. Because science isn't about why, it's about why not!

brainfuck_script.yaml

sequence:
  - variables:
      jumplist: []
      cells: "{{[0]*10}}"
      cell_ptr: 0
      ins: 0
      program: >-
        ++++++++[>++++[>++>+++>+++>+<<<<-]>+>+>->>+[<]<-]>>.>---.+++++++..+++.>>.<-.<.+++.------.--------.>>+.-
      output: ""
      jumps: "{{[0]*(program|length)}}"
  - repeat:
      sequence:
        - variables:
            instruction: "{{program[ins]}}"
        - choose:
            - conditions:
                - condition: template
                  value_template: "{{instruction == \"[\"}}"
              sequence:
                - variables:
                    jumplist: "{{jumplist + [ins]}}"
            - conditions:
                - condition: template
                  value_template: "{{instruction == \"]\"}}"
              sequence:
                - action: system_log.write
                  data:
                    level: error
                    message: Jump back from {{ins}} to {{jumplist[-1]}}  {{jumplist}}
                  enabled: false
                - variables:
                    opening: "{{jumplist[-1]}}"
                    jumplist: "{{jumplist[:-1]}}"
                    jumps: >-
                      {{jumps[:opening] + [ins] + jumps[opening+1:ins] +
                      [opening] + jumps[ins+1:]}}
                - action: system_log.write
                  data:
                    level: error
                    message: "{{jumps}}"
                  enabled: false
        - variables:
            ins: "{{ins + 1}}"
      while:
        - condition: template
          value_template: "{{(ins|int(0)) < (program|length)-1}}"
  - variables:
      ins: 0
  - repeat:
      sequence:
        - variables:
            instruction: "{{program[ins]}}"
        - choose:
            - conditions:
                - condition: template
                  value_template: "{{instruction == \">\"}}"
              sequence:
                - variables:
                    cell_ptr: "{{cell_ptr + 1}}"
            - conditions:
                - condition: template
                  value_template: "{{instruction == \"<\"}}"
              sequence:
                - variables:
                    cell_ptr: "{{cell_ptr - 1}}"
            - conditions:
                - condition: template
                  value_template: "{{instruction == \"+\"}}"
              sequence:
                - variables:
                    cells: >-
                      {{cells[:cell_ptr] + [cells[cell_ptr]+1] +
                      cells[cell_ptr+1:]}}
            - conditions:
                - condition: template
                  value_template: "{{instruction == \"-\"}}"
              sequence:
                - variables:
                    cells: >-
                      {{cells[:cell_ptr] + [cells[cell_ptr]-1] +
                      cells[cell_ptr+1:]}}
            - conditions:
                - condition: template
                  value_template: "{{instruction == \".\"}}"
              sequence:
                - variables:
                    output: >-
                      {{output +
                      '_!.#$%&.()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[#]^_#abcdefghijklmnopqrstuvwxyz{|}~'[cells[cell_ptr]-32]}}
            - conditions:
                - condition: template
                  value_template: "{{instruction == \"[\" and cells[cell_ptr] == 0}}"
              sequence:
                - variables:
                    ins: "{{jumps[ins]-1}}"
            - conditions:
                - condition: template
                  value_template: "{{(instruction == \"]\") and (cells[cell_ptr] != 0)}}"
              sequence:
                - variables:
                    ins: "{{jumps[ins]-1}}"
        - action: system_log.write
          data:
            level: error
            message: "Instruction ({{ins}}): {{program[ins]}} ({{cell_ptr}}) {{cells}}"
          enabled: false
        - variables:
            ins: "{{ins+1}}"
      while:
        - condition: template
          value_template: "{{(ins|int(0)) < (program|length)-1}}"
    enabled: true
  - action: system_log.write
    data:
      level: error
      message: "output: {{output}}"
  - action: persistent_notification.create
    data:
      message: "{{output}}"
    enabled: true
alias: bf
description: ""