src/brainfuck/brainfuck.cr


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require "./*"

module Brainfuck
  DEFAULT_TAPE_SIZE = 30_000

  class MemoryError < Exception
  end

  enum Opcode
    PtrRight
    PtrLeft
    Inc
    Dec
    Out
    In
    LoopStart
    LoopEnd
  end

  def self.opcode_from_char(c : Char) : Opcode?
    case c
    when '>' then Opcode::PtrRight
    when '<' then Opcode::PtrLeft
    when '+' then Opcode::Inc
    when '-' then Opcode::Dec
    when '.' then Opcode::Out
    when ',' then Opcode::In
    when '[' then Opcode::LoopStart
    when ']' then Opcode::LoopEnd
    else nil
    end
  end
end