leegao / mu

A small experimental language

Refer to http://www.opensource.org/licenses/gpl-3.0.html for license information.

The Mu Language

The mu language is an experimental language with a syntax derived from C. The language features variables whose types are determined dynamically during runtime. The aim of the project is simplicity, so there are only 5 primitive types; they are:

• number
• string
• list
• function
• boolean

and an extra nil type that denotes the lack of value.

There are 5 arithmetic operators closed on the domain of reals, they are:

+ - * / %

Furthermore, the traditional comparison operators from the number domain to booleans are:

< <= > >=

while these will work on boolean, numbers, and strings as well:

== !=

Function declaration follows this syntax:

function(arg1, arg2, arg3){
	...
}

and variable declaration:

var identifier;
var identifier = xxx;

Conditional statements are also supported. The syntax of a while loop is:

while expr {
	...
}

and the for loop:

// Using a counter
for (i = 0, i < n, i = i + 1) {
	...
}

// Foreach
for el in iterable {
	...
}

The if statements:

if expr {
	...
} elseif expr {
	...
} else {
	...
}

Be wary however that it is not determinable whether the elseif cases are terminating in the entire if block, hence the parser will look towards the next statement to determine whether the if conditional terminated.

Finally, all expressions must be terminated with a semicolon to be considered a statement.