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feat: hot traits

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This commit is contained in:
cha0s 2020-06-17 23:56:31 -05:00
parent 2a2b9fd8eb
commit c65612a387
1 changed files with 21 additions and 15 deletions
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24
packages/entity/trait/registrar.js
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@ -1,10 +1,12 @@
const {all, idFrom: idFromRaw} = require('./traits.scwp'); const {all, idFrom: idFromRaw} = require('./traits.scwp');
const {registerHooks} = require('scwp');
let hasMapped = false; let hasMapped = false;
const traitTo = new Map(); const traitTo = new Map();
const typeTo = new Map(); const typeTo = new Map();
function mapTypesToTraits() { function ensureTypeMap() {
if (!hasMapped) {
const entries = Object.entries(all()); const entries = Object.entries(all());
for (let i = 0; i < entries.length; i++) { for (let i = 0; i < entries.length; i++) {
const [, M] = entries[i]; const [, M] = entries[i];
@ -12,6 +14,8 @@ function mapTypesToTraits() {
typeTo.set(Trait.type(), Trait); typeTo.set(Trait.type(), Trait);
traitTo.set(Trait, M); traitTo.set(Trait, M);
} }
hasMapped = true;
}
} }
export function idFrom(Trait) { export function idFrom(Trait) {
@ -19,19 +23,21 @@ export function idFrom(Trait) {
} }
export function hasTrait(type) { export function hasTrait(type) {
if (!hasMapped) { ensureTypeMap();
mapTypesToTraits();
hasMapped = true;
}
return typeTo.has(type); return typeTo.has(type);
} }
export function lookupTrait(type) { export function lookupTrait(type) {
if (!hasMapped) { ensureTypeMap();
mapTypesToTraits();
hasMapped = true;
}
return typeTo.get(type); return typeTo.get(type);
} }
registerHooks({
autoreg$accept: (type, M) => {
const {default: Trait} = M;
typeTo.set(Trait.type(), Trait);
traitTo.set(Trait, M);
},
}, '@avocado/entity/trait/registrar');
module.hot?.accept(['./traits.scwp'], () => hasMapped = false); module.hot?.accept(['./traits.scwp'], () => hasMapped = false);