This is a program built to interpret Monty-like scripted files according to operation codes provided to us in the project.
Format for user to write in "testfile.m":
opcode argument
NOTE: No more than one instruction per line is allowed, there can however be as many spaces, new lines or tabs before or after the instruction.
| opcode | functionality |
|---|---|
| push | add element to the 'top' of stack and 'end' of queue |
| pop | remove element from 'top' of stack and 'end' of queue |
| pall | print every member of the structure |
| pint | prints the member value at the top of stack |
| swap | swaps the order of the 1st and 2nd elements in stack |
| add | add top two member values |
| sub | subtract the top element from the 2nd top element |
| div | divide the 2nd element by the top element |
| mul | multiply the top two elements of the stack |
| mod | the remainder when the 2nd element is divided by the top element |
| comment | there is the ability to parse comments found in bytecode ->'#' |
| pchar | print character at the top of the stack |
| pstr | print the character at the top of the stack |
| rotl | moves element at the top to the bottom of the stack |
| rotr | the bottom of the stack becomes the top |
| queue, stack | toggles the doubly link list implementation style |
| nop | opcode should do nothing |
Examples:
$ cat opcodetestfile.m
push 1
push 2
push 3
pall
$ ./montyfile opcodetestfile.m
3
2
1
$
$ cat opcodetestfile.m
push 1
push 2
push 3
pall
rotl
pall
$ ./montyfile opcodetestfile.m
3
2
1
2
1
3
$ cat opcodetestfile.m
push 4
push 5
push 18
push 3
pall
sub
pall
$ ./montyfile opcodetestfile.m
3
18
5
4
15
5
4
| File Name | Description |
|---|---|
| README.md | Provides details regarding functionality and creation of our version of a monty program (present file) |
| main.c | The entry point of our interpreter, recieves data and initializes data struct |
| init.c | This is where data gets read and processed, data is read from file and added to our data structure accordingly |
| mathops.c | All the functions to perform math operations on the data structure members |
| string_ops.c | Contains operations for string manipulation |
| opfuncs.c, opfuncs2.c | these files contain functionality for basic bytecode operations (pop, push, etc..) |
| printops.c | operatons to print members from data structure |
| check_input.c | checks the type of input given to resolve errors |
Exits with status EXIT_FAILURE
All files were compiled on Ubuntu 14.04 LTS.
All programs and functions were compiled with gcc 4.8.4 using flags -Wall -Werror -Wextra and -pedantic.
All files have been written in the Betty Style.