lang-mu

lang-mu is a lisp-like interpreted programming language.

Build

To build, you need to install flex and bison.

Functions

def

(def name value)
name: atom (not evaluated)
value: any expression
Locally bind atom name to value
returns: binded value

set

(set name value)
name: atom (not evaluated)
value: any expression
If atom is binded set binding in the scope where atom was first binded
else acts same as def
returns: binded value

defm, setm

(defm name value)
(setm name value)
name: atom (not evaluated)
value: macro object
Functions for macro registration.
returns: registered macro

set-head, set-tail

(set-head pair value)
(set-tail pair value)
pair: pair
value: any expression
Set head/tail of pair
returns: new head/tail

eq

(eq left right) Checks the equality of values
returns:
T if left and right are equal atoms, numbers or strings
nil otherwise

and

(and &rest values)
Conjunction
returns: T if all arguments are true values, and nil otherwise

or

(or &rest values)
Disjunction
returns: T if any of arguments is true value, and nil otherwise

not

(not value)
Negation
returns: T if argument is false value, and nil otherwise

xor

(xor &rest values)
Exclusive-disjunction
returns: T if only one of arguments is true value, and nil otherwise

Not documented functions

• lambda

• cond

• print

• prints

• quote

• cons

• head

• tail

• gensym

• backquote

• macro

• macroexpand

• gc-collect

• plus (+)