@forestadmin/datasource-toolkit
Version:
52 lines • 5.25 kB
JavaScript
;
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
const comparison_1 = __importDefault(require("./transforms/comparison"));
const pattern_1 = __importDefault(require("./transforms/pattern"));
const time_1 = __importDefault(require("./transforms/time"));
class ConditionTreeEquivalent {
static getEquivalentTree(leaf, operators, columnType, timezone) {
const { operator } = leaf;
const replacer = ConditionTreeEquivalent.getReplacer(operator, operators, columnType);
if (!replacer)
return leaf;
return replacer ? replacer(leaf, timezone, columnType === 'Dateonly') : null;
}
static hasEquivalentTree(operator, operators, columnType) {
return Boolean(ConditionTreeEquivalent.getReplacer(operator, operators, columnType));
}
/** Find a way to replace an operator by recursively exploring the transforms graph */
static getReplacer(op, filterOperators, columnType, visited = []) {
if (filterOperators?.has(op))
return leaf => leaf;
for (const alt of ConditionTreeEquivalent.getAlternatives(op) ?? []) {
const { replacer, dependsOn } = alt;
const valid = !alt.forTypes || alt.forTypes.includes(columnType);
if (valid && !visited.includes(alt)) {
const dependsReplacers = dependsOn.map(replacement => {
return this.getReplacer(replacement, filterOperators, columnType, [...visited, alt]);
});
if (dependsReplacers.every(r => !!r)) {
return (leaf, timezone, isDateOnly) => replacer(leaf, timezone, isDateOnly).replaceLeafs(subLeaf => dependsReplacers[dependsOn.indexOf(subLeaf.operator)](subLeaf, timezone, isDateOnly));
}
}
}
return null;
}
static getAlternatives(operator) {
// Init cache at first call to work around cyclic dependencies
if (!ConditionTreeEquivalent.alternatives) {
ConditionTreeEquivalent.alternatives = {
...(0, comparison_1.default)(),
...(0, pattern_1.default)(),
...(0, time_1.default)(),
};
}
return ConditionTreeEquivalent.alternatives[operator];
}
}
exports.default = ConditionTreeEquivalent;
ConditionTreeEquivalent.alternatives = null;
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