Files
pluto/js/re_frame/interceptor.js
T
Julien Eluard ecc4350dd6 Deploy website
Deploy website version based on c1349d8c7b
2018-11-08 09:47:44 +01:00

346 lines
16 KiB
JavaScript

// Compiled by ClojureScript 1.10.439 {:static-fns true, :optimize-constants true}
goog.provide('re_frame.interceptor');
goog.require('cljs.core');
goog.require('cljs.core.constants');
goog.require('re_frame.loggers');
goog.require('re_frame.interop');
goog.require('re_frame.trace');
goog.require('clojure.set');
re_frame.interceptor.mandatory_interceptor_keys = new cljs.core.PersistentHashSet(null, new cljs.core.PersistentArrayMap(null, 3, [cljs.core.cst$kw$after,null,cljs.core.cst$kw$id,null,cljs.core.cst$kw$before,null], null), null);
re_frame.interceptor.interceptor_QMARK_ = (function re_frame$interceptor$interceptor_QMARK_(m){
return ((cljs.core.map_QMARK_(m)) && (cljs.core._EQ_.cljs$core$IFn$_invoke$arity$2(re_frame.interceptor.mandatory_interceptor_keys,cljs.core.set(cljs.core.keys(m)))));
});
/**
* Create an interceptor from named arguments
*/
re_frame.interceptor.__GT_interceptor = (function re_frame$interceptor$__GT_interceptor(var_args){
var args__4647__auto__ = [];
var len__4641__auto___4529 = arguments.length;
var i__4642__auto___4530 = (0);
while(true){
if((i__4642__auto___4530 < len__4641__auto___4529)){
args__4647__auto__.push((arguments[i__4642__auto___4530]));
var G__4531 = (i__4642__auto___4530 + (1));
i__4642__auto___4530 = G__4531;
continue;
} else {
}
break;
}
var argseq__4648__auto__ = ((((0) < args__4647__auto__.length))?(new cljs.core.IndexedSeq(args__4647__auto__.slice((0)),(0),null)):null);
return re_frame.interceptor.__GT_interceptor.cljs$core$IFn$_invoke$arity$variadic(argseq__4648__auto__);
});
re_frame.interceptor.__GT_interceptor.cljs$core$IFn$_invoke$arity$variadic = (function (p__4526){
var map__4527 = p__4526;
var map__4527__$1 = (((((!((map__4527 == null))))?(((((map__4527.cljs$lang$protocol_mask$partition0$ & (64))) || ((cljs.core.PROTOCOL_SENTINEL === map__4527.cljs$core$ISeq$))))?true:false):false))?cljs.core.apply.cljs$core$IFn$_invoke$arity$2(cljs.core.hash_map,map__4527):map__4527);
var m = map__4527__$1;
var id = cljs.core.get.cljs$core$IFn$_invoke$arity$2(map__4527__$1,cljs.core.cst$kw$id);
var before = cljs.core.get.cljs$core$IFn$_invoke$arity$2(map__4527__$1,cljs.core.cst$kw$before);
var after = cljs.core.get.cljs$core$IFn$_invoke$arity$2(map__4527__$1,cljs.core.cst$kw$after);
if(re_frame.interop.debug_enabled_QMARK_){
var temp__5455__auto___4532 = cljs.core.seq(clojure.set.difference.cljs$core$IFn$_invoke$arity$2(cljs.core.set(cljs.core.keys(m)),re_frame.interceptor.mandatory_interceptor_keys));
if(temp__5455__auto___4532){
var unknown_keys_4533 = temp__5455__auto___4532;
re_frame.loggers.console.cljs$core$IFn$_invoke$arity$variadic(cljs.core.cst$kw$error,cljs.core.prim_seq.cljs$core$IFn$_invoke$arity$2(["re-frame: ->interceptor",m,"has unknown keys:",unknown_keys_4533], 0));
} else {
}
} else {
}
return new cljs.core.PersistentArrayMap(null, 3, [cljs.core.cst$kw$id,(function (){var or__4047__auto__ = id;
if(cljs.core.truth_(or__4047__auto__)){
return or__4047__auto__;
} else {
return cljs.core.cst$kw$unnamed;
}
})(),cljs.core.cst$kw$before,before,cljs.core.cst$kw$after,after], null);
});
re_frame.interceptor.__GT_interceptor.cljs$lang$maxFixedArity = (0);
/** @this {Function} */
re_frame.interceptor.__GT_interceptor.cljs$lang$applyTo = (function (seq4525){
var self__4629__auto__ = this;
return self__4629__auto__.cljs$core$IFn$_invoke$arity$variadic(cljs.core.seq(seq4525));
});
re_frame.interceptor.get_effect = (function re_frame$interceptor$get_effect(var_args){
var G__4535 = arguments.length;
switch (G__4535) {
case 1:
return re_frame.interceptor.get_effect.cljs$core$IFn$_invoke$arity$1((arguments[(0)]));
break;
case 2:
return re_frame.interceptor.get_effect.cljs$core$IFn$_invoke$arity$2((arguments[(0)]),(arguments[(1)]));
break;
case 3:
return re_frame.interceptor.get_effect.cljs$core$IFn$_invoke$arity$3((arguments[(0)]),(arguments[(1)]),(arguments[(2)]));
break;
default:
throw (new Error(["Invalid arity: ",cljs.core.str.cljs$core$IFn$_invoke$arity$1(arguments.length)].join('')));
}
});
re_frame.interceptor.get_effect.cljs$core$IFn$_invoke$arity$1 = (function (context){
return cljs.core.cst$kw$effects.cljs$core$IFn$_invoke$arity$1(context);
});
re_frame.interceptor.get_effect.cljs$core$IFn$_invoke$arity$2 = (function (context,key){
return cljs.core.get_in.cljs$core$IFn$_invoke$arity$2(context,new cljs.core.PersistentVector(null, 2, 5, cljs.core.PersistentVector.EMPTY_NODE, [cljs.core.cst$kw$effects,key], null));
});
re_frame.interceptor.get_effect.cljs$core$IFn$_invoke$arity$3 = (function (context,key,not_found){
return cljs.core.get_in.cljs$core$IFn$_invoke$arity$3(context,new cljs.core.PersistentVector(null, 2, 5, cljs.core.PersistentVector.EMPTY_NODE, [cljs.core.cst$kw$effects,key], null),not_found);
});
re_frame.interceptor.get_effect.cljs$lang$maxFixedArity = 3;
re_frame.interceptor.assoc_effect = (function re_frame$interceptor$assoc_effect(context,key,value){
return cljs.core.assoc_in(context,new cljs.core.PersistentVector(null, 2, 5, cljs.core.PersistentVector.EMPTY_NODE, [cljs.core.cst$kw$effects,key], null),value);
});
re_frame.interceptor.get_coeffect = (function re_frame$interceptor$get_coeffect(var_args){
var G__4538 = arguments.length;
switch (G__4538) {
case 1:
return re_frame.interceptor.get_coeffect.cljs$core$IFn$_invoke$arity$1((arguments[(0)]));
break;
case 2:
return re_frame.interceptor.get_coeffect.cljs$core$IFn$_invoke$arity$2((arguments[(0)]),(arguments[(1)]));
break;
case 3:
return re_frame.interceptor.get_coeffect.cljs$core$IFn$_invoke$arity$3((arguments[(0)]),(arguments[(1)]),(arguments[(2)]));
break;
default:
throw (new Error(["Invalid arity: ",cljs.core.str.cljs$core$IFn$_invoke$arity$1(arguments.length)].join('')));
}
});
re_frame.interceptor.get_coeffect.cljs$core$IFn$_invoke$arity$1 = (function (context){
return cljs.core.cst$kw$coeffects.cljs$core$IFn$_invoke$arity$1(context);
});
re_frame.interceptor.get_coeffect.cljs$core$IFn$_invoke$arity$2 = (function (context,key){
return cljs.core.get_in.cljs$core$IFn$_invoke$arity$2(context,new cljs.core.PersistentVector(null, 2, 5, cljs.core.PersistentVector.EMPTY_NODE, [cljs.core.cst$kw$coeffects,key], null));
});
re_frame.interceptor.get_coeffect.cljs$core$IFn$_invoke$arity$3 = (function (context,key,not_found){
return cljs.core.get_in.cljs$core$IFn$_invoke$arity$3(context,new cljs.core.PersistentVector(null, 2, 5, cljs.core.PersistentVector.EMPTY_NODE, [cljs.core.cst$kw$coeffects,key], null),not_found);
});
re_frame.interceptor.get_coeffect.cljs$lang$maxFixedArity = 3;
re_frame.interceptor.assoc_coeffect = (function re_frame$interceptor$assoc_coeffect(context,key,value){
return cljs.core.assoc_in(context,new cljs.core.PersistentVector(null, 2, 5, cljs.core.PersistentVector.EMPTY_NODE, [cljs.core.cst$kw$coeffects,key], null),value);
});
re_frame.interceptor.update_coeffect = (function re_frame$interceptor$update_coeffect(var_args){
var args__4647__auto__ = [];
var len__4641__auto___4544 = arguments.length;
var i__4642__auto___4545 = (0);
while(true){
if((i__4642__auto___4545 < len__4641__auto___4544)){
args__4647__auto__.push((arguments[i__4642__auto___4545]));
var G__4546 = (i__4642__auto___4545 + (1));
i__4642__auto___4545 = G__4546;
continue;
} else {
}
break;
}
var argseq__4648__auto__ = ((((3) < args__4647__auto__.length))?(new cljs.core.IndexedSeq(args__4647__auto__.slice((3)),(0),null)):null);
return re_frame.interceptor.update_coeffect.cljs$core$IFn$_invoke$arity$variadic((arguments[(0)]),(arguments[(1)]),(arguments[(2)]),argseq__4648__auto__);
});
re_frame.interceptor.update_coeffect.cljs$core$IFn$_invoke$arity$variadic = (function (context,key,f,args){
return cljs.core.apply.cljs$core$IFn$_invoke$arity$5(cljs.core.update_in,context,new cljs.core.PersistentVector(null, 2, 5, cljs.core.PersistentVector.EMPTY_NODE, [cljs.core.cst$kw$coeffects,key], null),f,args);
});
re_frame.interceptor.update_coeffect.cljs$lang$maxFixedArity = (3);
/** @this {Function} */
re_frame.interceptor.update_coeffect.cljs$lang$applyTo = (function (seq4540){
var G__4541 = cljs.core.first(seq4540);
var seq4540__$1 = cljs.core.next(seq4540);
var G__4542 = cljs.core.first(seq4540__$1);
var seq4540__$2 = cljs.core.next(seq4540__$1);
var G__4543 = cljs.core.first(seq4540__$2);
var seq4540__$3 = cljs.core.next(seq4540__$2);
var self__4628__auto__ = this;
return self__4628__auto__.cljs$core$IFn$_invoke$arity$variadic(G__4541,G__4542,G__4543,seq4540__$3);
});
re_frame.interceptor.invoke_interceptor_fn = (function re_frame$interceptor$invoke_interceptor_fn(context,interceptor,direction){
var temp__5455__auto__ = cljs.core.get.cljs$core$IFn$_invoke$arity$2(interceptor,direction);
if(cljs.core.truth_(temp__5455__auto__)){
var f = temp__5455__auto__;
return (f.cljs$core$IFn$_invoke$arity$1 ? f.cljs$core$IFn$_invoke$arity$1(context) : f.call(null,context));
} else {
return context;
}
});
/**
* Loop over all interceptors, calling `direction` function on each,
* threading the value of `context` through every call.
*
* `direction` is one of `:before` or `:after`.
*
* Each iteration, the next interceptor to process is obtained from
* context's `:queue`. After they are processed, interceptors are popped
* from `:queue` and added to `:stack`.
*
* After sufficient iteration, `:queue` will be empty, and `:stack` will
* contain all interceptors processed.
*
* Returns updated `context`. Ie. the `context` which has been threaded
* through all interceptor functions.
*
* Generally speaking, an interceptor's `:before` function will (if present)
* add to a `context's` `:coeffects`, while it's `:after` function
* will modify the `context`'s `:effects`. Very approximately.
*
* But because all interceptor functions are given `context`, and can
* return a modified version of it, the way is clear for an interceptor
* to introspect the stack or queue, or even modify the queue
* (add new interceptors via `enqueue`?). This is a very fluid arrangement.
*/
re_frame.interceptor.invoke_interceptors = (function re_frame$interceptor$invoke_interceptors(context,direction){
var context__$1 = context;
while(true){
var queue = cljs.core.cst$kw$queue.cljs$core$IFn$_invoke$arity$1(context__$1);
if(cljs.core.empty_QMARK_(queue)){
return context__$1;
} else {
var interceptor = cljs.core.peek(queue);
var stack = cljs.core.cst$kw$stack.cljs$core$IFn$_invoke$arity$1(context__$1);
var G__4547 = re_frame.interceptor.invoke_interceptor_fn(cljs.core.assoc.cljs$core$IFn$_invoke$arity$variadic(context__$1,cljs.core.cst$kw$queue,cljs.core.pop(queue),cljs.core.prim_seq.cljs$core$IFn$_invoke$arity$2([cljs.core.cst$kw$stack,cljs.core.conj.cljs$core$IFn$_invoke$arity$2(stack,interceptor)], 0)),interceptor,direction);
context__$1 = G__4547;
continue;
}
break;
}
});
/**
* Add a collection of `interceptors` to the end of `context's` execution `:queue`.
* Returns the updated `context`.
*
* In an advanced case, this function could allow an interceptor to add new
* interceptors to the `:queue` of a context.
*/
re_frame.interceptor.enqueue = (function re_frame$interceptor$enqueue(context,interceptors){
return cljs.core.update.cljs$core$IFn$_invoke$arity$4(context,cljs.core.cst$kw$queue,cljs.core.fnil.cljs$core$IFn$_invoke$arity$2(cljs.core.into,re_frame.interop.empty_queue),interceptors);
});
/**
* Create a fresh context
*/
re_frame.interceptor.context = (function re_frame$interceptor$context(var_args){
var G__4549 = arguments.length;
switch (G__4549) {
case 2:
return re_frame.interceptor.context.cljs$core$IFn$_invoke$arity$2((arguments[(0)]),(arguments[(1)]));
break;
case 3:
return re_frame.interceptor.context.cljs$core$IFn$_invoke$arity$3((arguments[(0)]),(arguments[(1)]),(arguments[(2)]));
break;
default:
throw (new Error(["Invalid arity: ",cljs.core.str.cljs$core$IFn$_invoke$arity$1(arguments.length)].join('')));
}
});
re_frame.interceptor.context.cljs$core$IFn$_invoke$arity$2 = (function (event,interceptors){
return re_frame.interceptor.enqueue(re_frame.interceptor.assoc_coeffect(cljs.core.PersistentArrayMap.EMPTY,cljs.core.cst$kw$event,event),interceptors);
});
re_frame.interceptor.context.cljs$core$IFn$_invoke$arity$3 = (function (event,interceptors,db){
return re_frame.interceptor.assoc_coeffect(re_frame.interceptor.context.cljs$core$IFn$_invoke$arity$2(event,interceptors),cljs.core.cst$kw$db,db);
});
re_frame.interceptor.context.cljs$lang$maxFixedArity = 3;
/**
* Called on completion of `:before` processing, this function prepares/modifies
* `context` for the backwards sweep of processing in which an interceptor
* chain's `:after` fns are called.
*
* At this point in processing, the `:queue` is empty and `:stack` holds all
* the previously run interceptors. So this function enables the backwards walk
* by priming `:queue` with what's currently in `:stack`
*/
re_frame.interceptor.change_direction = (function re_frame$interceptor$change_direction(context){
return re_frame.interceptor.enqueue(cljs.core.dissoc.cljs$core$IFn$_invoke$arity$2(context,cljs.core.cst$kw$queue),cljs.core.cst$kw$stack.cljs$core$IFn$_invoke$arity$1(context));
});
/**
* Executes the given chain (coll) of interceptors.
*
* Each interceptor has this form:
* {:before (fn [context] ...) ;; returns possibly modified context
* :after (fn [context] ...)} ;; `identity` would be a noop
*
* Walks the queue of iterceptors from beginning to end, calling the
* `:before` fn on each, then reverse direction and walk backwards,
* calling the `:after` fn on each.
*
* The last interceptor in the chain presumably wraps an event
* handler fn. So the overall goal of the process is to "handle
* the given event".
*
* Thread a `context` through all calls. `context` has this form:
*
* {:coeffects {:event [:a-query-id :some-param]
* :db <original contents of app-db>}
* :effects {:db <new value for app-db>
* :dispatch [:an-event-id :param1]}
* :queue <a collection of further interceptors>
* :stack <a collection of interceptors already walked>}
*
* `context` has `:coeffects` and `:effects` which, if this was a web
* server, would be somewhat anologous to `request` and `response`
* respectively.
*
* `coeffects` will contain data like `event` and the initial
* state of `db` - the inputs required by the event handler
* (sitting presumably on the end of the chain), while handler-returned
* side effects are put into `:effects` including, but not limited to,
* new values for `db`.
*
* The first few interceptors in a chain will likely have `:before`
* functions which "prime" the `context` by adding the event, and
* the current state of app-db into `:coeffects`. But interceptors can
* add whatever they want to `:coeffects` - perhaps the event handler needs
* some information from localstore, or a random number, or access to
* a DataScript connection.
*
* Equally, some interceptors in the chain will have `:after` fn
* which can process the side effects accumulated into `:effects`
* including but, not limited to, updates to app-db.
*
* Through both stages (before and after), `context` contains a `:queue`
* of interceptors yet to be processed, and a `:stack` of interceptors
* already done. In advanced cases, these values can be modified by the
* functions through which the context is threaded.
*/
re_frame.interceptor.execute = (function re_frame$interceptor$execute(event_v,interceptors){
if(re_frame.trace.is_trace_enabled_QMARK_()){
var new_trace__4454__auto___4551 = cljs.core.merge.cljs$core$IFn$_invoke$arity$variadic(cljs.core.prim_seq.cljs$core$IFn$_invoke$arity$2([cljs.core.update.cljs$core$IFn$_invoke$arity$4(re_frame.trace._STAR_current_trace_STAR_,cljs.core.cst$kw$tags,cljs.core.merge,cljs.core.cst$kw$tags.cljs$core$IFn$_invoke$arity$1(new cljs.core.PersistentArrayMap(null, 1, [cljs.core.cst$kw$tags,new cljs.core.PersistentArrayMap(null, 1, [cljs.core.cst$kw$interceptors,interceptors], null)], null))),cljs.core.dissoc.cljs$core$IFn$_invoke$arity$2(new cljs.core.PersistentArrayMap(null, 1, [cljs.core.cst$kw$tags,new cljs.core.PersistentArrayMap(null, 1, [cljs.core.cst$kw$interceptors,interceptors], null)], null),cljs.core.cst$kw$tags)], 0));
re_frame.trace._STAR_current_trace_STAR_ = new_trace__4454__auto___4551;
} else {
}
return re_frame.interceptor.invoke_interceptors(re_frame.interceptor.change_direction(re_frame.interceptor.invoke_interceptors(re_frame.interceptor.context.cljs$core$IFn$_invoke$arity$2(event_v,interceptors),cljs.core.cst$kw$before)),cljs.core.cst$kw$after);
});