├── .gitignore ├── .travis.yml ├── LICENSE ├── README.md ├── project.clj ├── src ├── indent_clj │ └── plugin.clj └── leiningen │ └── indent_clj.clj └── test ├── indent_clj └── test_indent.clj ├── test.indent-clj └── test.normal-clj /.gitignore: -------------------------------------------------------------------------------- 1 | /target 2 | /classes 3 | /checkouts 4 | pom.xml 5 | pom.xml.asc 6 | *.jar 7 | *.class 8 | /.lein-* 9 | /.nrepl-port 10 | test-output.clj -------------------------------------------------------------------------------- /.travis.yml: -------------------------------------------------------------------------------- 1 | language: clojure 2 | lein: lein2 3 | script: lein2 midje -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | THE ACCOMPANYING PROGRAM IS PROVIDED UNDER THE TERMS OF THIS ECLIPSE PUBLIC 2 | LICENSE ("AGREEMENT"). 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No party to this 212 | Agreement will bring a legal action under this Agreement more than one year 213 | after the cause of action arose. Each party waives its rights to a jury trial 214 | in any resulting litigation. 215 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # indent-clj 2 | 3 | [![Build Status](https://travis-ci.org/boxed/indent-clj.svg?branch=master)](https://travis-ci.org/boxed/indent-clj) 4 | 5 | This is an experiment into Clojure with inferred parenthesis. Files with the extension .indent-clj/.indent-cljs/.indent-cljx are rewritten into normal clojure by adding the inferred parenthesis. Since this is done as a leiningen plugin the rewriting should be fairly transparent so you can work in the indent-clj files only and still compile and test normally. The goal isn't to replace parenthesis, just read/write less of them, more specifically to stop making your brain ignore those that end up at the end of forms as "))))))))))" :P 6 | 7 | The parser is super simple so there are going to be some cases that it can't handle, like comments on the line after where the end paren is supposed to go. 8 | 9 | ## Example: 10 | 11 | ```clojure 12 | defn expand-path-once [state path] 13 | let [index-of-star (s/index-of path STAR)] 14 | if (= index-of-star -1) 15 | [path] 16 | let [[path-base path-rest] (split-at-exclusive index-of-star path)] 17 | if (map? (get-in state path-base)) 18 | let [ks (keys (get-in state path-base))] 19 | for [k ks] 20 | (into (into path-base [k]) path-rest) 21 | [] 22 | ``` 23 | 24 | is expanded into: 25 | 26 | ```clojure 27 | (defn expand-path-once [state path] 28 | (let [index-of-star (s/index-of path STAR)] 29 | (if (= index-of-star -1) 30 | [path] 31 | (let [[path-base path-rest] (split-at-exclusive index-of-star path)] 32 | (if (map? (get-in state path-base)) 33 | (let [ks (keys (get-in state path-base))] 34 | (for [k ks] 35 | (into (into path-base [k]) path-rest))) 36 | []))))) 37 | ``` 38 | 39 | 40 | ## Usage 41 | 42 | Put: 43 | 44 | [![Clojars Project](http://clojars.org/indent-clj/latest-version.svg)](http://clojars.org/indent-clj) 45 | 46 | into the `:plugins` vector of your project.clj, and then leiningen will support indent-clj files. 47 | 48 | ## License 49 | 50 | Copyright © 2014 Anders Hovmöller 51 | 52 | Distributed under the Eclipse Public License either version 1.0 or (at 53 | your option) any later version. 54 | -------------------------------------------------------------------------------- /project.clj: -------------------------------------------------------------------------------- 1 | (defproject indent-clj "1.0.1" 2 | :description "Inferred parenthesis for clojure" 3 | :url "https://github.com/boxed/indent-clj" 4 | :license {:name "Eclipse Public License" 5 | :url "http://www.eclipse.org/legal/epl-v10.html"} 6 | :scm {:name "git" 7 | :url "https://github.com/boxed/indent-clj"} 8 | :profiles {:dev {:dependencies [[midje "1.6.0"]] 9 | :plugins [[lein-midje "3.0.0"]]}} 10 | :eval-in-leiningen true) 11 | -------------------------------------------------------------------------------- /src/indent_clj/plugin.clj: -------------------------------------------------------------------------------- 1 | (ns indent-clj.plugin) 2 | 3 | (declare infer-paren) 4 | 5 | (defn middleware [project] 6 | (doseq [f (file-seq (clojure.java.io/file "src"))] 7 | (let [path (.getAbsolutePath f)] 8 | (if (re-matches #".*\.indent-clj[xs]?" path) 9 | (do 10 | (println "Rewriting " path) 11 | (spit (clojure.string/replace path ".indent-clj" ".clj") (infer-paren (slurp path))))))) 12 | project) 13 | 14 | ; TODO: handle comment lines: insert paren before the comment. This might be nasty and require a full parser to avoid screwing up strings etc. 15 | 16 | (def indent-size 2) 17 | (def indent-str " ") 18 | 19 | (defmacro for-v [binding-forms & body] 20 | `(into [] (for [~@binding-forms] ~@body))) 21 | 22 | (defn line-data [line] 23 | (let [after-indent (clojure.string/trim (or (get (re-find #"( )*." line) 0) "")) 24 | indent (/ (count (get (re-find #"( )*" line) 0)) indent-size)] 25 | {:line (subs line (* indent indent-size)) 26 | :indent indent 27 | :eligible-start (and (not= "" after-indent) 28 | (not= "(" after-indent))})) 29 | 30 | (def empty-line-data 31 | {:ignore false 32 | :line "" 33 | :indent 0 34 | :eligible-start false}) 35 | 36 | (defn drop-first-add-bogus-last [line-datas bogus] 37 | (conj (into [] (drop 1 line-datas)) bogus)) 38 | 39 | (defn get-next-non-ignored [data start-index] 40 | (let [x (first (filter #(not (:ignored %)) (drop (+ 1 start-index) data)))] 41 | (if (nil? x) 42 | empty-line-data 43 | x))) 44 | 45 | (defmacro for-x-and-next-x [data fill-last-elem & body] 46 | `(for-v [i# (range (count ~data))] 47 | (let [~'x (get ~data i#) 48 | ~'next-x (get-next-non-ignored ~data i#)] 49 | ~@body))) 50 | 51 | (defn set-ignore-flag [line-datas] 52 | (for-v [i (range (count line-datas))] 53 | (let [x (get line-datas i) 54 | indent (get-in line-datas [i :indent]) 55 | prev-indent (get-in line-datas [(- 1 i) :indent])] 56 | (if (or (.startsWith (:line x) " ") (and prev-indent (> indent (+ 1 prev-indent)))) 57 | (assoc x :ignore true) 58 | (assoc x :ignore false))))) 59 | 60 | (defn fix-eligible-start [line-datas] 61 | (for-x-and-next-x line-datas empty-line-data 62 | (assoc x :eligible-start (and (> (:indent next-x) (:indent x)) (:eligible-start x))))) 63 | 64 | (defn add-start-paren [input] 65 | (for-v [x input] 66 | (if (:eligible-start x) 67 | (assoc x :line (str "(" (:line x))) 68 | x))) 69 | 70 | (defn count-unbalanced-paren [line-datas] 71 | (for-v [x line-datas] 72 | (assoc x :unbalanced-paren (count (clojure.string/replace (:line x) #"[^(]" ""))))) 73 | 74 | (defn duplicate-string [s times] 75 | (clojure.string/join (for [_ (range times)] s))) 76 | 77 | (defn add-end-paren [line-datas] 78 | (for-x-and-next-x line-datas empty-line-data 79 | (if (and 80 | (or (= "" (:line next-x)) (not (:ignore x))) 81 | (< (:indent next-x) (:indent x))) 82 | (assoc x :line (str (:line x) 83 | (duplicate-string ")" (- (:indent x) (:indent next-x))))) 84 | x))) 85 | 86 | (defn re-add-indent [line-datas] 87 | (for-v [line-data line-datas] 88 | (assoc line-data :line (str (duplicate-string indent-str (:indent line-data)) (:line line-data))))) 89 | 90 | (defn infer-paren [input] 91 | (let [lines (clojure.string/split input #"\n")] 92 | (->> (into [] (concat (map line-data lines) [empty-line-data])) 93 | set-ignore-flag 94 | fix-eligible-start 95 | add-start-paren 96 | count-unbalanced-paren 97 | add-end-paren 98 | re-add-indent 99 | (map :line) 100 | (clojure.string/join "\n") 101 | clojure.string/trim 102 | ))) 103 | -------------------------------------------------------------------------------- /src/leiningen/indent_clj.clj: -------------------------------------------------------------------------------- 1 | (ns leiningen.indent-clj) 2 | -------------------------------------------------------------------------------- /test/indent_clj/test_indent.clj: -------------------------------------------------------------------------------- 1 | (ns indent-clj.test-indent 2 | [:use midje.sweet] 3 | [:require [indent-clj.plugin :refer :all]]) 4 | 5 | ;; The following line is useful for debugging 6 | ; (spit "test/test-output.clj" (infer-paren (slurp "test/test.indent-clj"))) 7 | 8 | (fact 9 | (infer-paren "foo\n bar") => "(foo\n bar)" 10 | (infer-paren "foo\n bar\n baz") => "(foo\n (bar\n baz))" 11 | (clojure.string/trim (infer-paren (slurp "test/test.indent-clj"))) => (clojure.string/trim (slurp "test/test.normal-clj")) 12 | ) 13 | -------------------------------------------------------------------------------- /test/test.indent-clj: -------------------------------------------------------------------------------- 1 | ns instar.core 2 | (:require [instar.stack :as s]) 3 | 4 | (def ^:private STAR *) 5 | 6 | (defn ^:private noop [x] x) 7 | 8 | 9 | defn ^:private split-at-exclusive [index path] 10 | let [[a b] (split-at index path)] 11 | [(into [] a) 12 | (into [] (drop 1 b))] 13 | 14 | defn expand-path-once [state path] 15 | let [index-of-star (s/index-of path STAR)] 16 | if (= index-of-star -1) 17 | [path] 18 | let [[path-base path-rest] (split-at-exclusive index-of-star path)] 19 | if (map? (get-in state path-base)) 20 | let [ks (keys (get-in state path-base))] 21 | for [k ks] 22 | (into (into path-base [k]) path-rest) 23 | [] 24 | 25 | defn expand-path [state path] 26 | let [paths (s/stack [path]) 27 | tmp (s/stack []) 28 | result (s/stack [])] 29 | while (s/not-empty? paths) 30 | let [path (s/pop! paths)] 31 | if (= (s/index-of path STAR) -1) 32 | (s/push! result path) 33 | (s/push-all! paths (expand-path-once state path)) 34 | (s/as-set result) 35 | 36 | defn resolve-paths-for-transform [m args] 37 | let [pairs (partition 2 args) 38 | result (s/stack [])] 39 | doseq [[p f] pairs] 40 | doseq [p (expand-path m p)] 41 | (s/push-all! result [p f]) 42 | (s/as-vector result) 43 | 44 | defn transform-resolved-paths [m args] 45 | let [pairs (partition 2 args)] 46 | reduce 47 | fn [state [path f]] 48 | if (fn? f) 49 | if (= f dissoc) ; This is a special case for usability purposes 50 | if (= (count path) 1) ; update-in doesn't support empty path: http://dev.clojure.org/jira/browse/CLJ-373 51 | (dissoc state (last path)) 52 | (update-in state (drop-last 1 path) #(dissoc % (last path))) 53 | (update-in state path f) 54 | (assoc-in state path f) 55 | m 56 | pairs 57 | 58 | defn transform [m & args] 59 | let [x (resolve-paths-for-transform m args)] 60 | (transform-resolved-paths m x) 61 | 62 | defn get-in-paths [m & args] 63 | let [args-with-bogus-op (apply concat (for [arg args] [arg noop])) ; ..because resolve-paths-for-transform expects pairs 64 | paths (resolve-paths-for-transform m args-with-bogus-op)] 65 | for [[p _] (partition 2 paths)] 66 | [p (get-in m p)] 67 | 68 | defn get-values-in-paths [& args] 69 | for [[path value] (apply get-in-paths args)] 70 | value 71 | -------------------------------------------------------------------------------- /test/test.normal-clj: -------------------------------------------------------------------------------- 1 | (ns instar.core 2 | (:require [instar.stack :as s])) 3 | 4 | (def ^:private STAR *) 5 | 6 | (defn ^:private noop [x] x) 7 | 8 | 9 | (defn ^:private split-at-exclusive [index path] 10 | (let [[a b] (split-at index path)] 11 | [(into [] a) 12 | (into [] (drop 1 b))])) 13 | 14 | (defn expand-path-once [state path] 15 | (let [index-of-star (s/index-of path STAR)] 16 | (if (= index-of-star -1) 17 | [path] 18 | (let [[path-base path-rest] (split-at-exclusive index-of-star path)] 19 | (if (map? (get-in state path-base)) 20 | (let [ks (keys (get-in state path-base))] 21 | (for [k ks] 22 | (into (into path-base [k]) path-rest))) 23 | []))))) 24 | 25 | (defn expand-path [state path] 26 | (let [paths (s/stack [path]) 27 | tmp (s/stack []) 28 | result (s/stack [])] 29 | (while (s/not-empty? paths) 30 | (let [path (s/pop! paths)] 31 | (if (= (s/index-of path STAR) -1) 32 | (s/push! result path) 33 | (s/push-all! paths (expand-path-once state path))))) 34 | (s/as-set result))) 35 | 36 | (defn resolve-paths-for-transform [m args] 37 | (let [pairs (partition 2 args) 38 | result (s/stack [])] 39 | (doseq [[p f] pairs] 40 | (doseq [p (expand-path m p)] 41 | (s/push-all! result [p f]))) 42 | (s/as-vector result))) 43 | 44 | (defn transform-resolved-paths [m args] 45 | (let [pairs (partition 2 args)] 46 | (reduce 47 | (fn [state [path f]] 48 | (if (fn? f) 49 | (if (= f dissoc) ; This is a special case for usability purposes 50 | (if (= (count path) 1) ; update-in doesn't support empty path: http://dev.clojure.org/jira/browse/CLJ-373 51 | (dissoc state (last path)) 52 | (update-in state (drop-last 1 path) #(dissoc % (last path)))) 53 | (update-in state path f)) 54 | (assoc-in state path f))) 55 | m 56 | pairs))) 57 | 58 | (defn transform [m & args] 59 | (let [x (resolve-paths-for-transform m args)] 60 | (transform-resolved-paths m x))) 61 | 62 | (defn get-in-paths [m & args] 63 | (let [args-with-bogus-op (apply concat (for [arg args] [arg noop])) ; ..because resolve-paths-for-transform expects pairs 64 | paths (resolve-paths-for-transform m args-with-bogus-op)] 65 | (for [[p _] (partition 2 paths)] 66 | [p (get-in m p)]))) 67 | 68 | (defn get-values-in-paths [& args] 69 | (for [[path value] (apply get-in-paths args)] 70 | value)) 71 | --------------------------------------------------------------------------------