blob: 22dac74fe66c7ab119d27c9003f5fb887fb4ed7b (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
|
## Copyright (c) Eduardo Julian. All rights reserved.
## The use and distribution terms for this software are covered by the
## Eclipse Public License 1.0 (http://opensource.org/licenses/eclipse-1.0.php)
## which can be found in the file epl-v10.html at the root of this distribution.
## By using this software in any fashion, you are agreeing to be bound by
## the terms of this license.
## You must not remove this notice, or any other, from this software.
(;import lux
(lux/meta macro)
(.. (functor #as F #refer #all)
(monad #as M #refer #all))
(lux/data list))
## Types
(deftype #export (Lazy a)
(All [b]
(-> (-> a b) b)))
## Syntax
(defmacro #export (... tokens state)
(case tokens
(\ (list value))
(let [blank (symbol$ ["" ""])]
(#;Right [state (list (` (;lambda [(~ blank)] ((~ blank) (~ value)))))]))
_
(#;Left "Wrong syntax for ...")))
## Functions
(def #export (! thunk)
(All [a]
(-> (Lazy a) a))
(thunk id))
## Structs
(defstruct #export Lazy/Functor (Functor Lazy)
(def (F;map f ma)
(lambda [k] (ma (. k f)))))
(defstruct #export Lazy/Monad (Monad Lazy)
(def M;_functor Lazy/Functor)
(def (M;wrap a)
(... a))
(def M;join !))
|
