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core.cljs
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core.cljs
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(ns lilac.core
(:require-macros [lilac.core])
(:require [lilac.util :refer [re? preview-data check-keys]]
[clojure.string :as string]
[clojure.set :refer [difference]]))
(declare validate-set)
(declare validate-record)
(declare core-methods)
(declare validate-and)
(declare validate-optional)
(declare validate-tuple)
(declare validate-map)
(declare validate-not)
(declare validate-or)
(declare validate-lilac)
(declare validate-list)
(declare validate-vector)
(declare validate-component)
(defonce *custom-methods (atom {}))
(defn and+
([items] (and+ items nil))
([items options]
(assert (vector? items) "expects items of and+ in vector")
{:lilac-type :and, :items items, :options options}))
(defn any+
([] (any+ nil))
([options]
(check-keys "checking any+" options [:some?])
{:lilac-type :any, :options options, :some? (:some? options)}))
(defn boolean+ ([] (boolean+ nil)) ([options] {:lilac-type :boolean}))
(defn format-message [acc result]
(if (nil? result)
acc
(let [message (str (:message result) " at " (vec (remove symbol? (:coord result))))]
(recur (str acc (if (some? acc) "\n" "") message) (:next result)))))
(def ok-result {:ok? true})
(defn validate-any [data rule coord]
(let [coord (conj coord 'number), something? (:some? rule)]
(if something?
(if (some? data)
ok-result
{:ok? false,
:data data,
:rule rule,
:coord coord,
:message (or (get-in rule [:options :message])
(str "expects something, got " (preview-data data)))})
ok-result)))
(defn validate-boolean [data rule coord]
(if (boolean? data)
ok-result
{:ok? false,
:data data,
:rule rule,
:coord (conj coord 'boolean),
:message (or (get-in rule [:options :message])
(str "expects a boolean, got " (preview-data data)))}))
(defn validate-custom [data rule coord]
(let [method (:fn rule), next-coord (conj coord 'custom), result (method data rule coord)]
(if (:ok? result)
result
{:ok? false,
:data data,
:rule rule,
:coord next-coord,
:message (or (:message result)
(get-in rule [:options :message])
"failed to validate with custom method")})))
(defn validate-enum [data rule coord]
(let [coord (conj coord 'enum), items (:items rule)]
(if (contains? items data)
ok-result
{:ok? false,
:data data,
:rule rule,
:coord coord,
:message (or (get-in rule [:options :message])
(str "expects value of " (pr-str items) ", got " (preview-data data)))})))
(defn validate-fn [data rule coord]
(let [next-coord (conj coord 'fn)]
(if (fn? data)
ok-result
{:ok? false,
:data data,
:rule rule,
:coord next-coord,
:message (or (get-in rule [:options :message])
(str "expects a function, got " (preview-data data)))})))
(defn validate-is [data rule coord]
(let [coord (conj coord 'is)]
(if (= data (:item rule))
ok-result
{:ok? false,
:data data,
:rule rule,
:coord coord,
:message (or (get-in rule [:options :message])
(str
"expects just "
(preview-data (:item rule))
", got "
(preview-data data)))})))
(defn validate-keyword [data rule coord]
(let [next-coord (conj coord 'keyword)]
(if (keyword? data)
ok-result
{:ok? false,
:data data,
:rule rule,
:coord next-coord,
:message (or (get-in rule [:options :message])
(str "expects a keyword, got " (preview-data data)))})))
(defn validate-nil [data rule coord]
(let [next-coord (conj coord 'nil)]
(if (nil? data)
ok-result
{:ok? false,
:data data,
:rule rule,
:coord next-coord,
:message (or (get-in rule [:options :message])
(str "expects a nil, got " (preview-data data)))})))
(defn validate-number [data rule coord]
(let [coord (conj coord 'number), min-v (:min rule), max-v (:max rule)]
(if (number? data)
(if (and (if (some? min-v) (>= data min-v) true)
(if (some? max-v) (<= data max-v) true))
ok-result
{:ok? false,
:data data,
:rule rule,
:coord coord,
:message (or (get-in rule [:options :message])
(str "expects number not in the range, got " (preview-data data)))})
{:ok? false,
:data data,
:rule rule,
:coord coord,
:message (or (get-in rule [:options :message])
(str "expects a number, got " (preview-data data)))})))
(defn validate-re [data rule coord]
(let [coord (conj coord 're)]
(if (re? data)
ok-result
{:ok? false,
:data data,
:rule rule,
:coord coord,
:message (or (get-in rule [:options :message])
(str "expects a regular expression, got " (preview-data data)))})))
(defn validate-string [data rule coord]
(let [coord (conj coord 'string), re (:re rule), nonblank? (:nonblank? rule)]
(if (string? data)
(cond
(some? re)
(if (re-matches re data)
ok-result
{:ok? false,
:data data,
:rule rule,
:coord coord,
:message (or (get-in rule [:options :message])
(str "expects a string in " re ", got " (preview-data data)))})
(some? nonblank?)
(if (and nonblank? (string/blank? data))
{:ok? false,
:data data,
:rule rule,
:coord coord,
:message (or (get-in rule [:options :message])
(str "expects nonblank string , got " (preview-data data)))}
ok-result)
:else ok-result)
{:ok? false,
:data data,
:rule rule,
:coord coord,
:message (or (get-in rule [:options :message])
(str "expected a string, but got " (preview-data data)))})))
(defn validate-symbol [data rule coord]
(let [coord (conj coord 'symbol)]
(if (symbol? data)
ok-result
{:ok? false,
:data data,
:rule rule,
:coord coord,
:message (or (get-in rule [:options :message])
(str "expects a symbol, got " (preview-data data)))})))
(defn validate-vector [data rule coord]
(let [item-rule (:item rule), coord (conj coord 'vector), allow-seq? (:allow-seq? rule)]
(if (or (vector? data) (if allow-seq? (seq? data) false))
(loop [xs data, idx 0]
(if (empty? xs)
ok-result
(let [x0 (first xs)
child-coord (conj coord idx)
result (validate-lilac x0 item-rule child-coord)]
(if (:ok? result) (recur (rest xs) (inc idx)) result))))
{:ok? false,
:data data,
:rule rule,
:coord coord,
:message (or (get-in rule [:options :message])
(str "expects a vector, got " (preview-data data)))})))
(defn validate-tuple [data rule coord]
(let [items (:items rule)
next-coord (conj coord 'tuple)
in-list? (:in-list? rule)
check-size? (:check-size? rule)
check-values (fn []
(loop [xs items, ys data, idx 0]
(if (empty? xs)
(if check-size?
(if (and (empty? ys) (= (count items) (count data)))
{:ok? true}
{:ok? false,
:coord next-coord,
:rule rule,
:data ys,
:message (get-in
rule
[:options :message]
(str
"expects tuple of "
(count items)
" items, got "
(count data)))})
ok-result)
(let [r0 (first xs)
y0 (first ys)
child-coord (conj next-coord idx)
result (validate-lilac y0 r0 child-coord)]
(if (:ok? result)
(recur (rest xs) (rest ys) (inc idx))
{:ok? false,
:coord next-coord,
:rule rule,
:data y0,
:message (get-in
rule
[:options :message]
"failed validating in \"tuple\""),
:next result})))))]
(if in-list?
(if (list? data)
(check-values)
{:ok? false,
:data data,
:rule rule,
:coord coord,
:message (str "expects a list for tuple, got " (preview-data data))})
(if (vector? data)
(check-values)
{:ok? false,
:data data,
:rule rule,
:coord coord,
:message (str "expects a vector for tuple, got " (preview-data data))}))))
(defn validate-set [data rule coord]
(let [item-rule (:item rule), coord (conj coord 'set)]
(if (set? data)
(loop [xs data, idx 0]
(if (empty? xs)
ok-result
(let [x0 (first xs)
child-coord (conj coord idx)
result (validate-lilac x0 item-rule child-coord)]
(if (:ok? result) (recur (rest xs) (inc idx)) result))))
{:ok? false,
:data data,
:rule rule,
:coord coord,
:message (or (get-in rule [:options :message])
(str "expects a set, got " (preview-data data)))})))
(defn validate-record [data rule coord]
(let [coord (conj coord 'record)
pairs (:pairs rule)
exact-keys? (:exact-keys? rule)
check-keys? (:check-keys? rule)
all-optional? (:all-optional? rule)
default-message (get-in rule [:options :message])
wanted-keys (set (keys pairs))
existed-keys (if (map? data) (set (keys data)))
check-values (fn []
(loop [xs pairs]
(if (empty? xs)
ok-result
(let [[k0 r0] (first xs)
child-coord (conj coord k0)
v (get data k0)]
(if (and all-optional? (nil? v))
(recur (rest xs))
(let [result (validate-lilac v r0 child-coord)]
(if (:ok? result) (recur (rest xs)) result)))))))]
(if (not (map? data))
{:ok? false,
:data data,
:rule rule,
:coord coord,
:message (or (get-in rule [:options :message])
(str "expects a record, got " (preview-data data)))}
(cond
exact-keys?
(if (= existed-keys wanted-keys)
(check-values)
{:ok? false,
:data data,
:rule rule,
:coord coord,
:message (or default-message
(let [extra-keys (difference existed-keys wanted-keys)
missing-keys (difference wanted-keys existed-keys)]
(if (not (empty? extra-keys))
(str "unexpected record keys " extra-keys " for " wanted-keys)
(str "missing record keys " missing-keys " of " wanted-keys))))})
check-keys?
(if (empty? (difference existed-keys wanted-keys))
(check-values)
{:ok? false,
:data data,
:rule rule,
:coord coord,
:message (or default-message
(let [extra-keys (difference existed-keys wanted-keys)]
(str "unexpected record keys " extra-keys " for " wanted-keys)))})
:else (check-values)))))
(defn validate-or [data rule coord]
(let [items (:items rule), next-coord (conj coord 'or)]
(loop [xs items, branches []]
(if (empty? xs)
{:ok? false,
:coord next-coord,
:rule rule,
:data data,
:message (get-in rule [:options :message] "found no matched case in \"or\""),
:branches branches,
:next (peek branches)}
(let [r0 (first xs), result (validate-lilac data r0 next-coord)]
(if (:ok? result) result (recur (rest xs) (conj branches result))))))))
(defn validate-optional [data rule coord]
(let [item (:item rule), coord (conj coord 'optional)]
(if (nil? data) ok-result (validate-lilac data item coord))))
(defn validate-not [data rule coord]
(let [coord (conj coord 'not), item (:item rule), result (validate-lilac data item coord)]
(if (:ok? result)
{:ok? false,
:data data,
:rule rule,
:coord coord,
:message (get-in rule [:options :message] "expects a inverted value in \"not\""),
:next result}
ok-result)))
(defn validate-map [data rule coord]
(let [key-rule (:key-shape rule), item-rule (:item rule), coord (conj coord 'map)]
(if (map? data)
(loop [xs data]
(if (empty? xs)
ok-result
(let [[k v] (first xs)
child-coord (conj coord k)
k-result (validate-lilac k key-rule child-coord)
result (validate-lilac v item-rule child-coord)]
(if (:ok? k-result) (if (:ok? result) (recur (rest xs)) result) k-result))))
{:ok? false,
:data data,
:rule rule,
:coord coord,
:message (or (get-in rule [:options :message])
(str "expects a map, got " (preview-data data)))})))
(defn validate-list [data rule coord]
(let [item-rule (:item rule), coord (conj coord 'list), allow-seq? (:allow-seq? rule)]
(if (or (list? data) (if allow-seq? (seq? data) false))
(loop [xs data, idx 0]
(if (empty? xs)
ok-result
(let [x0 (first xs)
child-coord (conj coord idx)
result (validate-lilac x0 item-rule child-coord)]
(if (:ok? result) (recur (rest xs) (inc idx)) result))))
{:ok? false,
:data data,
:rule rule,
:coord coord,
:message (or (get-in rule [:options :message])
(str "expects a list, got " (preview-data data)))})))
(defn validate-lilac
([data rule] (validate-lilac data rule []))
([data rule coord]
(comment println "got" rule)
(let [kind (:lilac-type rule)
method (get core-methods kind)
user-method (get @*custom-methods kind)
result (cond
(fn? method)
(do
(comment println "calling method for" kind method)
(method data rule coord))
(fn? user-method)
(do
(comment println "calling method for" kind method)
(user-method data rule coord))
:else (println "Unknown method:" kind "of" rule))]
(if (:ok? result) result (assoc result :formatted-message (format-message nil result))))))
(defn validate-component [data rule coord]
(let [lazy-fn (:fn rule)
next-coord (conj coord (symbol (name (:name rule))))
next-rule (apply lazy-fn (:args rule))]
(validate-lilac data next-rule next-coord)))
(defn validate-and [data rule coord]
(let [items (:items rule), next-coord (conj coord 'and)]
(loop [xs items]
(if (empty? xs)
ok-result
(let [r0 (first xs), result (validate-lilac data r0 next-coord)]
(if (:ok? result)
(recur (rest xs))
{:ok? false,
:coord next-coord,
:rule rule,
:data data,
:message (get-in rule [:options :message] "failed validating in \"and\""),
:next result}))))))
(def core-methods
{:boolean validate-boolean,
:string validate-string,
:nil validate-nil,
:fn validate-fn,
:keyword validate-keyword,
:symbol validate-symbol,
:number validate-number,
:re validate-re,
:vector validate-vector,
:record validate-record,
:map validate-map,
:list validate-list,
:set validate-set,
:not validate-not,
:or validate-or,
:and validate-and,
:custom validate-custom,
:component validate-component,
:is validate-is,
:optional validate-optional,
:tuple validate-tuple,
:any validate-any,
:enum validate-enum})
(defn custom+
([f] (custom+ f nil))
([f options] {:lilac-type :custom, :fn f, :options options}))
(defn enum+
([x] (enum+ x nil))
([items options]
{:lilac-type :enum,
:items (cond
(set? items) items
(vector? items) (set items)
(list? items) (set items)
:else (do (js/console.warn "Unknown items") items))}))
(defn fn+ ([] (fn+ nil)) ([options] {:lilac-type :fn, :options options}))
(def in-dev? (do ^boolean js/goog.DEBUG))
(defn is+ ([x] (is+ x nil)) ([x options] {:lilac-type :is, :item x}))
(defn keyword+ ([] (keyword+ nil)) ([options] {:lilac-type :keyword, :options options}))
(defn list+
([item] (list+ item nil))
([item options]
(check-keys "checking list+" options [:allow-seq?])
{:lilac-type :list, :item item, :options options, :allow-seq? (:allow-seq? options)}))
(defn map+
([key-shape item] (map+ key-shape item nil))
([key-shape item options]
{:lilac-type :map, :key-shape key-shape, :item item, :options options}))
(defn nil+ ([] (nil+ {})) ([options] {:lilac-type :nil}))
(defn not+
([item] (not+ item nil))
([item options] {:lilac-type :not, :item item, :options options}))
(defn number+
([] (number+ nil))
([options]
(check-keys "checking number+" options [:max :min])
{:lilac-type :number, :max (:max options), :min (:min options), :options options}))
(defn optional+
([item] (optional+ item nil))
([item options] {:lilac-type :optional, :item item, :options options}))
(defn or+
([items] (or+ items nil))
([items options]
(assert (vector? items) "expects items of or+ in vector")
{:lilac-type :or, :items items, :options options}))
(defn re+ ([re] (re+ re nil)) ([re options] {:lilac-type :re, :re re, :options options}))
(defn record+
([pairs] (record+ pairs nil))
([pairs options]
(check-keys "checking record+" options [:exact-keys? :check-keys? :all-optional?])
{:lilac-type :record,
:pairs pairs,
:options options,
:exact-keys? (:exact-keys? options),
:check-keys? (:check-keys? options),
:all-optional? (:all-optional? options)}))
(defn register-custom-rule! [type-name f]
(assert (keyword? type-name) "expects type name in keyword")
(assert (fn? f) "expects validation method in function")
(println "registering validation rule" type-name)
(swap! *custom-methods assoc type-name f))
(defn set+
([item] (set+ item nil))
([item options] {:lilac-type :set, :item item, :options options}))
(defn string+
([] (string+ nil))
([options]
(check-keys "checking string+" options [:nonblank?])
{:lilac-type :string,
:re (:re options),
:nonblank? (:nonblank? options),
:options options}))
(defn symbol+ ([] (symbol+ nil)) ([options] {:lilac-type :symbol}))
(defn tuple+
([items] (tuple+ items nil))
([items options]
(assert (vector? items) "expects items of tuple+ in vector")
(check-keys "checking tuple+" options [:in-list? :check-size?])
{:lilac-type :tuple,
:items items,
:options options,
:in-list? (:in-list? options),
:check-size? (:check-size? options)}))
(defn vector+
([item] (vector+ item nil))
([item options]
(check-keys "checking vector+" options [:allow-seq?])
{:lilac-type :vector, :item item, :options options, :allow-seq? (:allow-seq? options)}))