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Updating examples

This commit is contained in:
Devine Lu Linvega 2024-04-15 14:32:55 -07:00
parent 77046e2645
commit d22ed88f6e
10 changed files with 20 additions and 329 deletions
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20
examples/combinators.modal
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@ -1,11 +1,11 @@
<> (M ?x) (?x ?x)
<> (KI ?x ?y) (?y)
<> (T ?x ?y) (?y ?y)
<> (W ?x ?y) (?x ?y ?y)
<> (K ?x ?y) (?x)
<> (C ?x ?y ?z) (?x ?z ?y)
<> (B ?x ?y ?z) (?x (?y ?z))
<> (I ?x) (?x)
<> (S ?x ?y ?z) (?x ?z (?y ?z))
define (M ?x) (?x ?x) C KI x y z
define (KI ?x ?y) (?y)
define (T ?x ?y) (?y ?y)
define (W ?x ?y) (?x ?y ?y)
define (K ?x ?y) (?x)
define (C ?x ?y ?z) (?x ?z ?y)
define (B ?x ?y ?z) (?x (?y ?z))
define (I ?x) (?x)
define (S ?x ?y ?z) (?x ?z (?y ?z))

8
examples/concat.modal
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@ -1,8 +0,0 @@
define (: ?x ?y ;) (define ?x ?y)
: (?x dup) (?x ?x) ;
: (?x ?y swap) (?y ?x) ;
: (?x drop) () ;
: (?x ?y p*) (?x * ?y) ;
: square (dup p*) ;
10 square

3
examples/console_write.modal
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@ -1,3 +0,0 @@
<> ((send ?:)) ()
(send (hello world))

8
examples/flip.modal
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@ -1,8 +0,0 @@
<> (explode ?*) (str (?*))
<> (reverse (str (?h ?t))) (reverse/l ?t (?h))
<> (reverse (str (?h))) (?h)
<> (reverse/l (?h ?t) ?l) (reverse/l ?t (?h ?l))
<> (reverse/l (?h) ?l) (str (?h ?l))
<> (implode str ?*) (?*)
(implode reverse (explode hello))

4
examples/console_read.modal → examples/io_read.modal
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@ -5,5 +5,5 @@
(Tell me three things: \n) print ' (Tell me three things: \n) print '
' (You said: read stdin ' (You said: read stdin
then, you continued: read stdin \nthen, you continued: read stdin
finaly, you concluded: read stdin) print \nfinaly, you concluded: read stdin \n) print

3
examples/io_write.modal Normal file
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@ -0,0 +1,3 @@
<> (send ?:) (?:)
send (hello world)

13
examples/lisp.modal
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@ -1,13 +0,0 @@
define nil ()
define (pair (?x) (?y)) ((?x ?y))
define (first (?x ?y)) (?x)
define (second (?x ?y)) (?y)
define (quote ?x) (quote ?x)
define (if ?c ?t else ?f) (if/else ?c quote ?t quote ?f)
define (if/else (true) quote (?t) quote (?f)) (?t)
define (if/else (false) quote (?t) quote (?f)) (?f)
define (hello) (bye)
pair (pair (foo) (nil)) (baz)

144
examples/prelude.modal
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@ -1,144 +0,0 @@
1 -> (s (0));
neg (neg ?x) -> ?x;
neg (0) -> 0;
add (s ?x) (s ?y) -> s (add ?x (s ?y));
add (0) (s ?x) -> s ?x;
add (s ?x) (0) -> s ?x;
add (0) (0) -> 0;
?x + ?y + ?z -> (?x + ?y) + ?z;
?x + ?y -> add ?x ?y;
sub (s ?x) (s ?y) -> sub ?x ?y;
sub (s ?x) (0) -> s ?x;
sub (0) (s ?x) -> neg (s ?x);
sub (0) (0) -> 0;
?x - ?y -> sub ?x ?y;
mul (s ?x) (s ?y) -> (s ?x) + (mul (s ?x) ((s ?y) - 1));
mul (s ?x) (s (0)) -> s ?x;
mul (s ?x) (0) -> 0;
mul (0) (s ?x) -> 0;
?x * ?y -> mul ?x ?y;
Ensures that a list or a number has been reduced to its normal form. ;
reduced (0) -> true;
reduced (nil) -> true;
reduced (s ?x) -> reduced ?x;
reduced (?h : ?t) -> reduced ?t;
reduced ?x -> false;
Because there may be conflicts with expressions that
are currently being reduced, we need to fold over reduced
lists, i.e ones that have already been fully generated. ;
fold (?f) ?i ?l -> fold reduced ?l (?f) ?i ?l;
fold true (?f) ?i (nil) -> ?i;
fold true (?f) ?i (?h : (nil)) -> ?f ?i ?h;
fold true (?f) ?i (?h : ?t) -> ?f ?i (fold (?f) ?h ?t);
fold false (?f) ?i ?l -> fold (?f) ?i ?l;
factorial (s (0)) -> s (0);
factorial (s ?x) -> (s ?x) * (factorial ((s ?x) - 1));
sum (?h : ?t) -> fold (add) (0) (?h : ?t);
range ?x (s (0)) -> ?x : (nil);
range ?x (s ?y) -> ?x : (range (?x + 1) ((s ?y) - 1));
Disgusting (yet valid) hack for currying.
We need lambdas. ;
unpack (?h : nil) -> ?h;
unpack (?h : ?t) -> ?h unpack ?t;
unpack (?x) -> ?x;
unpack (?x . -> ?x unpack (;
:: (?f) ?a -> ?f unpack ?a;
mapp (?f) ?a (nil) -> nil;
mapp (?f) ?a (?h : (nil)) -> (?f unpack ?a ?h) : (nil);
mapp (?f) ?a (?h : ?t) -> (?f unpack ?a ?h) : (mapp (?f) ?a ?t);
map (?f) (nil) -> nil;
map (?f) (?h : nil) -> (?f ?h) : (nil);
map (?f) (?h : ?t) -> (?f ?h) : (map (?f) ?t);
product ?x -> fold (mul) 1 ?x;
factorial2 ?x -> product (range 1 ?x);
contains ?x (nil) -> false;
contains ?x (?x : ?t) -> true;
contains ?x (?h : ?t) -> contains ?x ?t;
unique (nil) -> nil;
unique false (?h : ?t) -> ?h : (unique ?t);
unique true (?h : ?t) -> unique ?t;
unique (?h : ?t) -> unique contains ?h ?t (?h : ?t);
length (nil) -> 0;
length (?h : ?t) -> s (length ?t);
zipWith (?f) (nil) (nil) -> nil;
zipWith (?f) (?h : ?t) (nil) -> nil;
zipWith (?f) (nil) (?h : ?t) -> nil;
zipWith (?f) (?h1 : ?t1) (?h2 : ?t2) -> (?f ?h1 ?h2) : (zipWith (?f) ?t1 ?t2);
evens ?x -> zipWith (add) (range (0) ?x) (range (0) ?x);
not (not ?x) -> ?x;
not true -> false;
not false -> true;
any ?x -> contains true ?x;
all ?x -> not contains false ?x;
none ?x -> not any ?x;
add1 ?x -> add ?x 1;
square ?x -> ?x * ?x;
reduce (s ?x) -> s (reduce ?x);
reduce (0) -> (0);
reduce (?h : ?t) -> ?h : (reduce ?t);
reduce (nil) -> nil;

141
examples/prelude2.modal
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@ -1,141 +0,0 @@
define [-- ?x] {}
define [form ?x ?y] {
define ?x ?y
}
define [rule ?x ?y] {
define ?x ?y
}
define [?x -> ?y] {
define ?x ?y
}
[(?x) = (?x)] -> {
true
}
[(?x) = (?y)] -> {
false
}
[false or false] -> {
false
}
[true or false] -> {
true
}
[false or true] -> {
true
}
[true or true] -> {
true
}
[quote ?x] -> {
quote ?x
}
[unquote (quote ?x)] -> {
?x
}
form [
if ?condition
?true
else
?false
]
{
if/else ?condition {
quote ?true
} {
quote ?false
}
}
form [
if ?condition
?branch
]
{
if/q ?condition {
quote ?branch
}
}
rule [
if/q (true)
?branch
]
{
unquote ?branch
}
rule [
if/q (false)
?branch
]
{}
rule [
if/else (true)
?true
?false
]
{
unquote ?true
}
rule [
if/else (false)
?true
?false
]
{
unquote ?false
}
[factorial (?x)] -> {
if ((?x) = (1)) {
1
}
else {
?x * factorial (?x - 1)
}
}
[fibonacci (?number)] -> {
if((?number) = (0) or (?number) = (1)) {
?number
}
else {
fibonacci (?number - 1) + fibonacci (?number - 2)
}
}
[range (?low) (?high)] -> {
if((?low) = (?high + 1)) {
nil
}
else {
?low : range (?low + 1) (?high)
}
}
[fold (?operation) (?initial) (nil)] -> {
?initial
}
[fold (?operation) (?initial) (?head : ?tail)] -> {
?operation ?head (fold (?operation) (?initial) ?tail)
}
[sum ?list] -> {
fold (add) (0) ?list
}

5
examples/string_reverse.modal Normal file
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@ -0,0 +1,5 @@
<> (reverse List () ?*) (?*)
<> (reverse (?*)) (reverse List (?*) ())
<> (reverse List (?x ?y) ?z) (reverse List ?y (?x ?z))
(reverse (modal))