Monty Bytecode Interpreter

Documentation

Installation

• compile with the following:
  • gcc -Wall -Werror -Wextra -pedantic *.c -o monty
  • usage: ./monty
    • filename should contain the Operators
    • One operator per line
    • spaces and newlines are ignored
    • '#' sign represent comments and the line will be ignored

Monty Language

Monty 0.98 is a scripting language that is first compiled into Monty byte codes (Just like Python). It relies on a unique stack, with specific instructions to manipulate it. The goal of this project is to create an interpreter for Monty ByteCodes files.

• monty.h - contains all the structure and prototype
• main.c - main function for monty interpreter

Helper

• newline_check.c - checks if the first character in a line is a newline
• tokenizer.c - tokenizes the command and value in the line
• find_op.c - uses the first token (command) to find what operator(instruction) to use
• list_len.c - returns the number of element in the stack
• free_l.c - free everything on the stack
• check_val.c - checks if everything on the second command are all digits

Operator Instruction

• op_push.c - pushes value to stack
  • usage: push 123
• op_pall.c - prints everything on the stack LIFO
  • usage: pall
• op_pint.c - prints the top value of the stack
  • usage: pint
• op_add.c - adds the top two elements of the stack
  • usage: add
• op_sub.c - subtracts the top element of the stack from the second top element of the stack
  • usage: sub
• op_swap.c - swaps the top two elements of the stack
  • usage: swap
• op_pop.c - removes the top element of the stack
  • usage: pop
• op_nop.c - doesn't do anything
  • usage: nop
• op_div - divides the second top element of the stack by the top element of the stack
  • usage: div
• op_mul - multiplies the second top element of the stack with the top element of the stack
  • usage: mul
• op_mod - computes the rest of the division of the second top element of the stack by the top element of the stack
  • usage: mod
• op_pchar - prints the char at the top of the stack, followed by a new line
  • usage: pchar
• op_pstr - prints the string starting at the top of the stack, followed by a new line.
  • usage: pstr
• op_rotl - rotates the stack to the top. The top element of the stack becomes the last one, and the second top element of the stack becomes the first one
  • usage: rotl
• op_rotr - rotates the stack to the bottom. The last element of the stack becomes the top element of the stack
  • usage: rotr

Authors

Gregory Dame Spencer Taylor