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Constant block is now built in a subdir to avoid messing up source
directory.
Renamed to ao_scheme to reflect language target.
Signed-off-by: Keith Packard <keithp@keithp.com>
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Scheme uses bare symbols to indicate a varargs parameter; any bare
(i.e., not wrapped in a cons cell) parameter will get the 'rest' of
the parameter list. This works for lambdas, nlambdas and macros. As a
result, the 'lexpr' form has been removed as it is equivalent to a
lambda with a varargs formal.
Signed-off-by: Keith Packard <keithp@keithp.com>
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Use defines where possible, use (define (name args ...)) form for lambdas
Signed-off-by: Keith Packard <keithp@keithp.com>
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In scheme, set can only re-define existing variables while def cannot
redefine existing variables in lambda context. Def within lambda
creates a new variable at the nearest enclosing scope.
Signed-off-by: Keith Packard <keithp@keithp.com>
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let is supposed to define the values all at once, evaluating the
initializers in the enclosing context. let* defines the new names and
then initializes them one at a time.
Signed-off-by: Keith Packard <keithp@keithp.com>
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This adds read support for quasiquote syntax, and then adds a
quasiquote implementation in lisp
Signed-off-by: Keith Packard <keithp@keithp.com>
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Match scheme name.
Signed-off-by: Keith Packard <keithp@keithp.com>
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Signed-off-by: Keith Packard <keithp@keithp.com>
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flush -> flush-output
nth -> list-ref (oh, and add list-tail)
add let* (same as let for now)
write control chars in octal
make hanoi example work
Signed-off-by: Keith Packard <keithp@keithp.com>
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* print -> write, patom -> display
* Add read-char, write-char
* Add exit, current-jiffy, current-second, jiffies-per-second
* Add for-each and string-for-each
* Avoid duplicate builtins with different atoms
Signed-off-by: Keith Packard <keithp@keithp.com>
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And all of the library routines that use it, map, string-map and friends.
Signed-off-by: Keith Packard <keithp@keithp.com>
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Also add back escaped characters in strings.
Signed-off-by: Keith Packard <keithp@keithp.com>
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* Arithmetic functions and tests
* append, reverse and list-tail
* set-car! and set-cdr!
Signed-off-by: Keith Packard <keithp@keithp.com>
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Add 'if'.
setq -> set!, but doesn't define new variables
def -> define
Add pair? and list?
Add eq? and eqv? as aliases for =
Signed-off-by: Keith Packard <keithp@keithp.com>
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Cond and while compare against #f, just like scheme says to.
Signed-off-by: Keith Packard <keithp@keithp.com>
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Signed-off-by: Keith Packard <keithp@keithp.com>
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This allows for (defun foo())
Signed-off-by: Keith Packard <keithp@keithp.com>
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Note range of existing chunks to exclude objects outside.
Only look at chunks which have been set to reduce loop cost.
Signed-off-by: Keith Packard <keithp@keithp.com>
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Added nth, or and and.
Signed-off-by: Keith Packard <keithp@keithp.com>
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This assumes that macros are all pure functions, which should be true
for syntactic macros.
Signed-off-by: Keith Packard <keithp@keithp.com>
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Progn as a builtin will help with tail-recursion.
while provides for loops until tail-recursion works :-)
read and eval are kinda useful.
Signed-off-by: Keith Packard <keithp@keithp.com>
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Provide an abstraction for the OS interface so that it
can build more cleanly on Linux and AltOS. Add defun macro.
Signed-off-by: Keith Packard <keithp@keithp.com>
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Not working yet
Signed-off-by: Keith Packard <keithp@keithp.com>
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Pass reference to move API so it can change the values in-place, then
let it return '1' when the underlying object has already been moved to
shorten GC times.
Signed-off-by: Keith Packard <keithp@keithp.com>
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Signed-off-by: Keith Packard <keithp@keithp.com>
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This makes all lisp objects use 16-bit ints for references so we can
hold more stuff in small amounts of memory. Also adds a separate
constant pool of lisp objects for builtins, initial atoms and constant
lisp code.
Now builds (and runs!) on the nucleo-32 boards.
Signed-off-by: Keith Packard <keithp@keithp.com>
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