angular-cesium-ivy
Version:
Angular library for working with Angular-Cesium.
64 lines • 10 kB
JavaScript
import { Injectable } from '@angular/core';
import { SmartAssigner } from '../smart-assigner/smart-assigner.service';
import * as i0 from "@angular/core";
import * as i1 from "angular2parse";
import * as i2 from "../json-mapper/json-mapper.service";
export class CesiumProperties {
constructor(_parser, _jsonMapper) {
this._parser = _parser;
this._jsonMapper = _jsonMapper;
this._assignersCache = new Map();
this._evaluatorsCache = new Map();
}
_compile(expression, withCache = true) {
const cesiumDesc = {};
const propsMap = new Map();
const resultMap = this._jsonMapper.map(expression);
resultMap.forEach((resultExpression, prop) => propsMap.set(prop, {
expression: resultExpression,
get: this._parser.eval(resultExpression)
}));
propsMap.forEach((value, prop) => {
if (withCache) {
cesiumDesc[prop || 'undefined'] = `cache.get(\`${value.expression}\`, () => propsMap.get('${prop}').get(context))`;
}
else {
cesiumDesc[prop || 'undefined'] = `propsMap.get('${prop}').get(context)`;
}
});
const fnBody = `return ${JSON.stringify(cesiumDesc).replace(/"/g, '')};`;
const getFn = new Function('propsMap', 'cache', 'context', fnBody);
return function evaluateCesiumProps(cache, context) {
return getFn(propsMap, cache, context);
};
}
_build(expression) {
const props = Array.from(this._jsonMapper.map(expression).keys());
const smartAssigner = SmartAssigner.create(props);
return function assignCesiumProps(oldVal, newVal) {
return smartAssigner(oldVal, newVal);
};
}
createEvaluator(expression, withCache = true, newEvaluator = false) {
if (!newEvaluator && this._evaluatorsCache.has(expression)) {
return this._evaluatorsCache.get(expression);
}
const evaluatorFn = this._compile(expression, withCache);
this._evaluatorsCache.set(expression, evaluatorFn);
return evaluatorFn;
}
createAssigner(expression) {
if (this._assignersCache.has(expression)) {
return this._assignersCache.get(expression);
}
const assignFn = this._build(expression);
this._assignersCache.set(expression, assignFn);
return assignFn;
}
}
CesiumProperties.ɵfac = function CesiumProperties_Factory(t) { return new (t || CesiumProperties)(i0.ɵɵinject(i1.Parse), i0.ɵɵinject(i2.JsonMapper)); };
CesiumProperties.ɵprov = /*@__PURE__*/ i0.ɵɵdefineInjectable({ token: CesiumProperties, factory: CesiumProperties.ɵfac });
(function () { (typeof ngDevMode === "undefined" || ngDevMode) && i0.ɵsetClassMetadata(CesiumProperties, [{
type: Injectable
}], function () { return [{ type: i1.Parse }, { type: i2.JsonMapper }]; }, null); })();
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