Monty - LIFO, FIFO

Monty 0.98 is a scripting language that is first compiled into Monty bytecode 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.

Requirements

• All files compiled on Ubuntu 14.04 LTS
• Allow to use max one global variable
• Usage: monty file
  • where file is the path to the file containing Monty byte code
• If the user does not give any file or more than one argument to your program, print the error message USAGE: monty file, followed by a new line, and exit with the status EXIT_FAILURE
• If, for any reason, it’s not possible to open the file, print the error message Error: Can't open file <file>, followed by a new line, and exit with the status EXIT_FAILURE.
  • where is the name of the file.
• If the file contains an invalid instruction, print the error message L<line_number>: unknown instruction <opcode>, followed by a new line, and exit with the status EXIT_FAILURE.
  • where is the line number where the instruction appears.
  • Line numbers always start at 1.
• The monty program runs the bytecodes line by line and stop if either:
  • it executed properly every line of the file.
  • it finds an error in the file.
  • an error occured.
• If you can’t malloc anymore, print the error message Error: malloc failed, followed by a new line, and exit with status EXIT_FAILURE.
• You have to use malloc and free and are not allowed to use any other function from man malloc (realloc, calloc, …).

Compile

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

$ ./monty monty_file.m

Examples

A file named 00.m that contains the implementation of push and pall opcodes:

  $ cat bytecodes/00.m
  push 1
  push 2
  push 3
  pall
  $ ./monty bytecodes/00.m
  3
  2
  1

Implementing the pint opcode:

  $ cat bytecodes/06.m
  push 1
  pint
  push 2
  pint
  push 3
  pint
  $ ./monty bytecodes/06.m
  1
  2
  3

Implementing the pchar opcode:

  $ cat bytecodes/28.m
  push 69
  pchar
  $ ./monty bytecodes/28.m
  E

Functions

File	Description
main.c	Contains the call to system functions
op_functions1.c	Contains the call to the function push, pall, pint and pop
op_functions2.c	Contains the call to the function swap, add, nop, sub and div
op_rotr.c	Rotates the stack to the bottom.
processing_file_name.c	Processes each line of the file introduced.
selector.c	Selects function of opcode related to the line of monty.
stack_operations.c	Determines the length of a stack.
strings.c	Determines the strings length.

Authors ✒️

• Adriana Echeverri - adri-er
• Juan Sebastian Tovar - juanstm200