titoausten / monty

🐍 Monty Interpreter

Welcome to the Monty Bytecode Interpreter. This interpreter was built in the C language and is compliant with ISO90, ISO99, & ISO11. It reads Monty bytecode files of any extension (preferably .m although it doesn't matter), and interprets the opcodes contained.

Our interpreter can be run as either a stack (LIFO) or queue (FIFO). Mode can be switched mid-script. The interpreter can handle a variety of Monty opcodes, including printing, mathematical operations, and more - all handled opcodes are listed below.

⚠️ Prerequisites

• Must have git installed.

• Must have repository cloned.

$ sudo apt-get install git

⬇️ Installing and Using

Clone the repository into a new directory:

$ git clone https://github.com/titoausten/monty.git

Compile with the following:

gcc -Wall -Werror -Wextra -pedantic *.c -o monty

Run the interpreter on a file:

./monty file.m

🔧 Monty Opcodes

• push

  • Usage: push <int>
  • Pushes an element to the stack.
  • The parameter <int> must be an integer.

• pall

  • Prints all values in the stack/queue, starting from the top.

• pint

  • Prints the top value of the stack/queue.

• pop

  • Removes the top element of the stack/queue.

• swap

  • Swaps the top two elements of the stack/queue.

• nop

  • Does not do anything.

• add

  • Adds the top two elements of the stack/queue.
  • The result is stored in the second element from the top and the top element is popped.

• sub

  • Subtracts the top element of the stack/queue from the second element from the top.
  • The result is stored in the second element from the top and the top element is removed.

• mul

  • Multiplies the top two elements of the stack/queue.
  • The result is stored in the second element from the top and the top element is removed.

• div

  • Divides the second element from the top of the stack/queue by the top element.
  • The result is stored in the second element from the top and the top element is removed.

• mod

  • Computes the modulus of the second element from the top of the stack/queue divided by the top element.
  • The result is stored in the second element from the top and the top element is removed.

• pchar

  • Prints the character value of the top element of the stack/queue.
  • The integer at the top is treated as an ASCII value.

• pstr

  • Prints the string contained in the stack/queue.
  • Prints characters element by element until the stack/queue is empty, a value is 0, or an error occurs.

• rotl

  • Rotates the top element of the stack/queue to the bottom.

• rotr

  • Rotates the bottom element of the stack/queue to the top.

• stack

  • Switches a queue to stack mode.

• queue

  • Switches a stack to queue mode.

📘 Author

• Tito Osadebey - @titoausten