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November 10, 2020 03:30
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Macro to hopefully make it easier managing utility css libraries like tachyons
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(ns tachyons | |
(:require [clojure.string :as str])) | |
(defn styles->str [styles] | |
(let [ref-marker "*" | |
is-symbol? #(str/starts-with? % ref-marker) | |
class-or-sym #(cond | |
(is-symbol? %) | |
(-> % | |
name | |
(str/replace-first ref-marker "") | |
symbol) | |
(list? %) % | |
:else (name %)) | |
items (map class-or-sym styles)] | |
`(str/join " " (list ~@items)))) | |
#_[(styles->str '[a b c]) | |
(styles->str '[a b *c]) | |
(styles->str '[a b (if true a *c)])] | |
(defn style-bindings [styles] | |
(mapv #(if (vector? %) | |
(styles->str %) | |
(symbol %)) styles)) | |
#_[(style-bindings | |
'[interact [grow pointer]])] | |
(defmacro defcomponent | |
[styles component] | |
(let [bind-forms (style-bindings styles)] | |
`(let [~@bind-forms] | |
~component))) | |
;; Component with backref and expressions | |
#_(defcomponent | |
[interact [grow pointer] | |
grow [*interact another one] | |
a [choice-a] | |
b [choice-b] | |
conditional [(if (= 1 1) a b)]] | |
[:div {:class interact} | |
[:div {:class grow}] | |
[:div {:class conditional}]]) | |
#_(macroexpand-1 | |
'(defcomponent | |
[interact [grow pointer]] | |
[:div {:class interact}])) |
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