struct Interpreter

• Interpreter
• Struct
• Value
• Object

Overview

This is the library for handling brainfuck code. The struct Interpreter can be instantiated like so...

Interpreter.new("+++++++++[>++++++++++<-]>.")

Where the arguments to the initializer is a string containing the brainfuck code.

Defined in:

interpreter.cr

Constructors

• .new(str : String)

Instance Method Summary

• #bracket_map : Hash(Int32, Int32)

  Stores the start and end positions of loops in a hash

• #code : String

  The code string that is passed to the program by the user with -d and --data flags

• #consume

  consumes a single char at a time

• #create_bracket_map(str : String)
• #interpret

  Iterates through the code string and compares each character against a case statement for that character raises a custom BrainFuckError when a unknown BF command is given

• #mem : Array(UInt8)

  A 30k length array of memory as specified in the BF spec.

• #pc : Int32

  The Program Counter keeps track of how far along we are in the code And is set to the start or end of the loop when it hits [ or ]

• #sp : Int32

  Stack Pointer indexes into the area in memory that is modified by the + and - instructions

Constructor Detail

Instance Method Detail