/
semantic_tokens.clj
220 lines (186 loc) · 6.59 KB
/
semantic_tokens.clj
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(ns clojure-lsp.feature.semantic-tokens
(:require
[clojure-lsp.shared :as shared]
[clojure.string :as string]
[taoensso.timbre :as log])
(:import
[clojure.lang PersistentVector]))
(set! *warn-on-reflection* true)
(def token-types
[:namespace
:type
:function
:macro
:keyword
:class
:variable
:method
:event])
(def token-types-str
(->> token-types
(map name)
vec))
(def token-modifiers
[:definition :defaultLibrary])
(def token-modifiers-str
(->> token-modifiers
(map name)
vec))
(defn ^:private rpad-seq [s n x]
(take n (concat s (repeat x))))
(defn ^:private token-modifiers->decimal-bit
[modifiers]
(as-> token-modifiers $
(mapv #(if (contains? (set modifiers) %) 1 0) $)
(rpad-seq $ 8 "0")
(reverse $)
(string/join "" $)
(Integer/parseInt $ 2)))
(defn ^:private decimal-bit->token-modifiers
[decimal-bit]
(->> decimal-bit
Integer/toBinaryString
reverse
(map-indexed #(when (= \1 %2) (nth token-modifiers %1)))
(remove nil?)
vec))
(defn ^:private element-inside-range?
[{element-row :name-row element-end-row :name-end-row}
{:keys [name-row name-end-row]}]
(and (>= ^Long element-row ^Long name-row)
(<= ^Long element-end-row ^Long name-end-row)))
(defn ^:private element->absolute-token
([element token-type]
(element->absolute-token element token-type []))
([{:keys [name-row name-col name-end-col]}
token-type
token-modifier]
[(dec ^Long name-row)
(dec ^Long name-col)
(- ^Long name-end-col ^Long name-col)
(.indexOf ^PersistentVector token-types token-type)
(token-modifiers->decimal-bit token-modifier)]))
(defn ^:private var-definition-element->absolute-tokens
[{:keys [defined-by] :as element}]
(cond
defined-by
[(element->absolute-token element :function [:definition])]
:else
nil))
(defn ^:private var-usage-element->absolute-tokens
[{:keys [name alias macro name-col to] :as element}]
(let [name-str ^String (str name)]
(cond
(and macro
(not alias))
[(element->absolute-token element :macro)]
(and macro
alias)
(let [slash (+ name-col (count (str alias)))
alias-pos (assoc element :name-end-col slash)
slash-pos (assoc element :name-col slash :name-end-col (inc slash))
name-pos (assoc element :name-col (inc slash))]
[(element->absolute-token alias-pos :type)
(element->absolute-token slash-pos :event)
(element->absolute-token name-pos :macro)])
alias
(let [slash (+ name-col (count (str alias)))
slash-pos (assoc element :name-col slash :name-end-col (inc slash))
alias-pos (assoc element :name-end-col slash)
name-pos (assoc element :name-col (inc slash))]
[(element->absolute-token alias-pos :type)
(element->absolute-token slash-pos :event)
(element->absolute-token name-pos :function)])
(and (identical? :clj-kondo/unknown-namespace to)
(.equals \. (.charAt name-str 0)))
[(element->absolute-token element :method)]
(identical? :clj-kondo/unknown-namespace to)
nil
(and (string/starts-with? name-str "*")
(string/ends-with? name-str "*")
(> (count name-str) 2))
[(element->absolute-token element :variable [:defaultLibrary])]
:else
[(element->absolute-token element :function)])))
(defn ^:private keywords->absolute-tokens
[{:keys [ns alias name-col auto-resolved namespace-from-prefix] :as element}]
(cond
(and ns
(or (not auto-resolved)
alias)
(not namespace-from-prefix))
(let [slash (+ (if alias 2 1) name-col (count (str (or alias ns))))
ns-pos (assoc element :name-end-col slash)
slash-pos (assoc element :name-col slash :name-end-col (inc slash))
name-pos (assoc element :name-col (inc slash))]
[(element->absolute-token ns-pos :type)
(element->absolute-token slash-pos :event)
(element->absolute-token name-pos :keyword)])
:else
[(element->absolute-token element :keyword)]))
(defn ^:private elements->absolute-tokens
[elements]
(->> elements
(sort-by (juxt :name-row :name-col))
(map
(fn [{:keys [bucket] :as element}]
(cond
;; TODO needs better way to know it's class related
;; (and (= bucket :var-usages)
;; (not alias)
;; (Character/isUpperCase (.charAt ^String (str name) 0)))
;; [(element->absolute-token element :class)]
(= bucket :var-usages)
(var-usage-element->absolute-tokens element)
(= bucket :var-definitions)
(var-definition-element->absolute-tokens element)
(#{:locals :local-usages} bucket)
[(element->absolute-token element :variable)]
(= bucket :namespace-definitions)
[(element->absolute-token element :namespace)]
(and (= bucket :keywords)
(not (:str element))
(not (:keys-destructuring element)))
(keywords->absolute-tokens element))))
(remove nil?)
(mapcat identity)))
(defn ^:private absolute-token->relative-token
[tokens
index
[row col length token-type token-modifier :as token]]
(let [[previous-row previous-col _ _ _] (nth tokens (dec index) nil)]
(cond
(nil? previous-row)
token
(= ^Long previous-row ^Long row)
[0
(- ^Long col ^Long previous-col)
length
token-type
token-modifier]
:else
[(- ^Long row ^Long previous-row)
col
length
token-type
token-modifier])))
(defn full-tokens [uri db]
(let [elements (get-in @db [:analysis (shared/uri->filename uri)])
absolute-tokens (elements->absolute-tokens elements)]
(->> absolute-tokens
(map-indexed (partial absolute-token->relative-token absolute-tokens))
flatten)))
(defn range-tokens
[uri range db]
(let [elements (get-in @db [:analysis (shared/uri->filename uri)])
range-elements (filter #(element-inside-range? % range) elements)
absolute-tokens (elements->absolute-tokens range-elements)]
(->> absolute-tokens
(map-indexed (partial absolute-token->relative-token absolute-tokens))
flatten)))
(defn element->token-type [element]
(->> [element]
elements->absolute-tokens
(mapv (fn [[_ _ _ type modifier]]
{:token-type (nth token-types type type)
:token-modifier (decimal-bit->token-modifiers modifier)}))))