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| // need this when running in Node.js environment
// import { clearTimeout } from 'timers';
import {
WILDCARD,
INTERCEPT,
ASYNC,
INLINE
// TIMEOUT_REJECT
} from './constants';
import AppCtxRoot from './AppCtxRoot';
import AppCtx from './AppCtx';
import AppCtxHandlers from './AppCtxHandlers';
import { _cleanAC, _validateHandler } from './utils';
const NOOP = () => {};
// // Private methods for TAO
// function _cleanAC({ t, term, a, action, o, orient }) {
// return {
// term: term || t,
// action: action || a,
// orient: orient || o
// };
// }
// function _validateHandler(handler) {
// if (!handler) {
// throw new Error('cannot do anything with missing handler');
// }
// if (typeof handler !== 'function') {
// throw new Error('handler must be a function');
// }
// }
function _appendLeaves(leavesFrom, leavesTo, taoism) {
if (taoism) {
if (leavesFrom.has(taoism) && leavesFrom.get(taoism).size) {
leavesFrom.get(taoism).forEach(leaf => leavesTo.add(leaf));
}
} else {
leavesFrom.forEach(leaves => {
leaves.forEach(leaf => leavesTo.add(leaf));
});
}
}
function _appendWildcards(wildcardsFrom, wildcardsTo, taoism) {
if (wildcardsFrom.has(taoism)) {
wildcardsFrom.get(taoism).forEach(wc => wildcardsTo.add(wc));
}
if (wildcardsFrom.has(WILDCARD)) {
wildcardsFrom.get(WILDCARD).forEach(wc => wildcardsTo.add(wc));
}
}
function _addLeaf(leaves, taoism, ach) {
if (!leaves.has(taoism)) {
leaves.set(taoism, new Set());
}
leaves.get(taoism).add(ach);
}
function _addWildcard(wildcards, taoism, ach) {
if (!wildcards.has(taoism)) {
wildcards.set(taoism, new Set());
}
wildcards.get(taoism).add(ach);
}
function _addACHandler(
tao,
taoHandlers,
taoLeaves,
taoWildcards,
{ term, action, orient }
) {
const t = term || WILDCARD;
const a = action || WILDCARD;
const o = orient || WILDCARD;
const acKey = AppCtxRoot.getKey(t, a, o);
if (taoHandlers.has(acKey)) {
return taoHandlers.get(acKey);
}
const ach = new AppCtxHandlers(t, a, o);
if (ach.isWildcard) {
let leaves = new Set();
_appendLeaves(taoLeaves.t, leaves, term);
_appendLeaves(taoLeaves.a, leaves, action);
_appendLeaves(taoLeaves.o, leaves, orient);
ach.addLeafHandlers(leaves);
_addWildcard(taoWildcards.t, t, ach);
_addWildcard(taoWildcards.a, a, ach);
_addWildcard(taoWildcards.o, o, ach);
} else {
//!ach.isWildcard
_addLeaf(taoLeaves.t, term, ach);
_addLeaf(taoLeaves.a, action, ach);
_addLeaf(taoLeaves.o, orient, ach);
let wildcards = new Set();
_appendWildcards(taoWildcards.t, wildcards, term);
_appendWildcards(taoWildcards.a, wildcards, action);
_appendWildcards(taoWildcards.o, wildcards, orient);
for (let wc of wildcards) {
wc.addLeafHandler(ach);
}
}
taoHandlers.set(acKey, ach);
return ach;
}
function _removeHandler(taoHandlers, { term, action, orient }, handler, type) {
_validateHandler(handler);
// guard is currently impossible to hit so removing to get 100% test coverage
// type = type || INLINE;
// if (type !== ASYNC && type !== INLINE && type !== INTERCEPT) {
// throw new Error(
// `${type} not a known handler type - try ${ASYNC}, ${INLINE} or ${INTERCEPT}`
// );
// }
const t = term || WILDCARD;
const a = action || WILDCARD;
const o = orient || WILDCARD;
const acKey = AppCtxRoot.getKey(t, a, o);
if (!taoHandlers.has(acKey)) {
return;
}
taoHandlers.get(acKey)[`remove${type}Handler`](handler);
}
// function _removeHandlers(taoHandlers, acList, handlers, type) {
// handlers.forEach(handler =>
// acList.forEach(ac =>
// _removeHandler(taoHandlers, _cleanAC(ac), handler, type)
// )
// );
// }
export default class Network {
constructor() {
this._handlers = new Map();
this._leaves = {
t: new Map(),
a: new Map(),
o: new Map()
};
this._wildcards = {
t: new Map(),
a: new Map(),
o: new Map()
};
this._middleware = new Set();
}
use(middleware) {
Iif (typeof middleware !== 'function') {
throw new Error('middleware must be a function');
}
Eif (!this._middleware.has(middleware)) {
this._middleware.add(middleware);
}
}
stop(middleware) {
if (this._middleware.has(middleware)) {
this._middleware.delete(middleware);
}
}
clone() {
const cloned = new Network();
for (let trigram of this._handlers.values()) {
for (let interceptHandler of trigram.interceptHandlers) {
cloned.addInterceptHandler(trigram, interceptHandler);
}
for (let asyncHandler of trigram.asyncHandlers) {
cloned.addAsyncHandler(trigram, asyncHandler);
}
for (let inlineHandler of trigram.inlineHandlers) {
cloned.addInlineHandler(trigram, inlineHandler);
}
}
return cloned;
}
setCtxControl(
{ t, term, a, action, o, orient },
data,
control = {},
forwardAppCtx = NOOP
) {
// get the hash for the ac
const acIn = _cleanAC({ t, term, a, action, o, orient });
const isWild = AppCtxRoot.isWildcard(acIn);
// console.log('setCtxControl::trigram:', { t, a, o, term, action, orient });
// console.log('setCtxControl::control:', control);
// console.log('setCtxControl::forwardAppCtx:', typeof forwardAppCtx);
Iif (typeof forwardAppCtx !== 'function') {
forwardAppCtx = NOOP;
}
const acKey = AppCtxRoot.getKey(acIn.term, acIn.action, acIn.orient);
if (!this._handlers.has(acKey) && !isWild) {
_addACHandler(this, this._handlers, this._leaves, this._wildcards, acIn);
}
Eif (this._handlers.has(acKey)) {
const appCtx = new AppCtx(acIn.term, acIn.action, acIn.orient, data);
// why not forward the call to setAppCtx? -> b/c don't want to execute check against existing again
const handler = this._handlers.get(acKey);
for (let middleware of this._middleware) {
middleware(handler, appCtx, forwardAppCtx, control);
}
}
}
setAppCtxControl(appCtx, control = {}, forwardAppCtx) {
Iif (!(appCtx instanceof AppCtx)) {
throw new Error(`'appCtx' not an instance of AppCtx`);
}
// console.log('setAppCtxControl::appCtx:', appCtx.unwrapCtx());
// console.log('setAppCtxControl::control:', control);
// console.log('setAppCtxControl::forwardAppCtx:', typeof forwardAppCtx);
Iif (typeof forwardAppCtx !== 'function') {
forwardAppCtx = NOOP;
}
const isWild = appCtx.isWildcard;
if (!this._handlers.has(appCtx.key) && !isWild) {
_addACHandler(
this,
this._handlers,
this._leaves,
this._wildcards,
_cleanAC(appCtx)
);
}
Eif (this._handlers.has(appCtx.key)) {
const handler = this._handlers.get(appCtx.key);
for (let middleware of this._middleware) {
middleware(handler, appCtx, forwardAppCtx, control);
}
}
}
addInterceptHandler({ t, term, a, action, o, orient }, handler) {
_validateHandler(handler);
const ach = _addACHandler(
this,
this._handlers,
this._leaves,
this._wildcards,
_cleanAC({ t, term, a, action, o, orient })
);
ach.addInterceptHandler(handler);
return this;
}
addAsyncHandler({ t, term, a, action, o, orient }, handler) {
_validateHandler(handler);
const ach = _addACHandler(
this,
this._handlers,
this._leaves,
this._wildcards,
_cleanAC({ t, term, a, action, o, orient })
);
ach.addAsyncHandler(handler);
return this;
}
addInlineHandler({ t, term, a, action, o, orient }, handler) {
_validateHandler(handler);
const ach = _addACHandler(
this,
this._handlers,
this._leaves,
this._wildcards,
_cleanAC({ t, term, a, action, o, orient })
);
ach.addInlineHandler(handler);
return this;
}
removeHandler({ t, term, a, action, o, orient }, handler, type) {
const ac = _cleanAC({ t, term, a, action, o, orient });
Eif (type) {
_removeHandler(this._handlers, ac, handler, type);
} else {
for (let t of [INTERCEPT, ASYNC, INLINE]) {
_removeHandler(this._handlers, ac, handler, t);
}
}
return this;
}
removeInterceptHandler({ t, term, a, action, o, orient }, handler) {
_removeHandler(
this._handlers,
_cleanAC({ t, term, a, action, o, orient }),
handler,
INTERCEPT
);
return this;
}
removeAsyncHandler({ t, term, a, action, o, orient }, handler) {
_removeHandler(
this._handlers,
_cleanAC({ t, term, a, action, o, orient }),
handler,
ASYNC
);
return this;
}
removeInlineHandler({ t, term, a, action, o, orient }, handler) {
_removeHandler(
this._handlers,
_cleanAC({ t, term, a, action, o, orient }),
handler,
INLINE
);
return this;
}
}
|