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MONTY

Project of C: Stacks, Queues - LIFO, FIFO

This project challenges us to create a double linked list, interpreting the Monty language through the bytecode

The 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 byte code files

Files containing Monty byte codes usually have the '.m' extension. Most of the industry uses this standard but it is not required by the specification of the language. There is not more than one instruction per line. There can be any number of spaces before or after the opcode and its argument:

hsh~$ cat -e bytecodes/000.m
push 0$
push 1$
push 2$
  push 3$
                   pall    $
push 4$
    push 5    $
      push    6        $
pall$

Challenges

Some of the challenges of this project are:

  • Explain without the help of Google some concepts such as: What do LIFO and FIFO mean, What is a stack, and when to use it, What is a queue, and when to use it, What are the most common use cases of stacks and queues, etc.

Requirements

  • Work in: vi, vim, emacs editos.
  • All your files should end with a new line.
  • You allowed to use a maximum of one global variable.
  • No more than 5 functions per file.
  • You are allowed to use the C standard library.
  • Don’t forget to push your header file, in this case it's called "monty.h".

Compilation & Output

The code will be compiled this way:

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

How to use the "monty" program:

Usage: monty file, where file is the path to the file containing Monty byte code. example:

$ ./monty bytecodes/01.m
OPCODE DESCRIPTION
push pushes an element to the stack.
pall prints all the values on the stack, starting from the top of the stack.
pint prints the value at the top of the stack, followed by a new line.
pop removes the top element of the stack.
swap swaps the top two elements of the stack.
add adds the top two elements of the stack.
nop doesn’t do anything.
sub subtracts the top element of the stack from the second top element of the stack.
div divides the second top element of the stack by the top element of the stack.
mul multiplies the second top element of the stack with the top element of the stack.
mod computes the rest of the division of the second top element of the stack by the top element of the stack.
# When the first non-space character of a line is #, treat this line as a comment (don’t do anything).
pchar prints the char at the top of the stack, followed by a new line.
pstr prints the string starting at the top of the stack, followed by a new line.
rotl rotates the stack to the top.
rotr rotates the stack to the bottom.
stack sets the format of the data to a stack (LIFO). This is the default behavior of the program.
queue sets the format of the data to a queue (FIFO).

Authors

Andres Felipe Garcia y Jonatan Mazo Castro.

Thanks for read.

monty's People

Contributors

maztro avatar andres0191 avatar

Watchers

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