BCL

A compiler for "Basic Command Language".

Basic Command Language is a personel experiment for generating IL code. It's not feature complete and provides terrible error messages. It was initially made in one afternoon; though there may be some fixes here and there.

BCL Example

var int x 5
var int y 7
var int result

call add x y result
call print result

Types:

• int
• long
• float
• double
• string

Commands:

• var [type] [name] [optiona-value]
• call [func-name] [func-arg-1] [func-arg-2] [etc.]

Functions:

• print [variable]
• add [varA] [varB] [var-to-store-result]
• subtract [varA] [varB] [var-to-store-result]
• multiply [varA] [varB] [var-to-store-result]
• divide [varA] [varB] [var-to-store-result]
• read [var-to-store-result]
• goto [label]
• goto [label] [varA] [comparison-operator] [varB]
• pause

Comparison Operators:

• =: equals.
• !: not equals.
• >=: greater or equal.
• <=: less or equal.
• >: greater.
• <: less.

Pogram Examples

Hello World

var string msg Hello World!
call print msg

Math

var int x 5
var int y 7

var int sum
var int difference
var int product
var int remainder

call add x y sum
call subtract x y difference
call multiply x y product
call divide x y remainder

call print sum
call print difference
call print product
call print remainder

For Loop

var int index 0
var int max 10
var int one 1

label start
call print index
call add index one index
call goto start index < max

If Statement

var int x 5
var int y 5

call goto true x = y
call goto false

label true
var string msgTrue True!
call print msgTrue
call goto end

label false
var string msgFalse False!
call print msgFalse

label end