@tanstack/db
Version:
A reactive client store for building super fast apps on sync
62 lines (61 loc) • 1.8 kB
JavaScript
;
Object.defineProperty(exports, Symbol.toStringTag, { value: "Module" });
const ir = require("../ir.cjs");
const SUPPORTED_COLLECTION_FUNCS = /* @__PURE__ */ new Set([
`eq`,
`gt`,
`lt`,
`gte`,
`lte`,
`and`,
`or`,
`in`
]);
function isConvertibleToCollectionFilter(whereClause) {
const tpe = whereClause.type;
if (tpe === `func`) {
if (!SUPPORTED_COLLECTION_FUNCS.has(whereClause.name)) {
return false;
}
return whereClause.args.every(
(arg) => isConvertibleToCollectionFilter(arg)
);
}
return [`val`, `ref`].includes(tpe);
}
function convertToBasicExpression(whereClause, collectionAlias) {
const tpe = whereClause.type;
if (tpe === `val`) {
return new ir.Value(whereClause.value);
} else if (tpe === `ref`) {
const path = whereClause.path;
if (Array.isArray(path)) {
if (path[0] === collectionAlias && path.length > 1) {
return new ir.PropRef(path.slice(1));
} else if (path.length === 1 && path[0] !== void 0) {
return new ir.PropRef([path[0]]);
}
}
return new ir.PropRef(Array.isArray(path) ? path : [String(path)]);
} else {
if (!SUPPORTED_COLLECTION_FUNCS.has(whereClause.name)) {
return null;
}
const args = [];
for (const arg of whereClause.args) {
const convertedArg = convertToBasicExpression(
arg,
collectionAlias
);
if (convertedArg == null) {
return null;
}
args.push(convertedArg);
}
return new ir.Func(whereClause.name, args);
}
}
exports.SUPPORTED_COLLECTION_FUNCS = SUPPORTED_COLLECTION_FUNCS;
exports.convertToBasicExpression = convertToBasicExpression;
exports.isConvertibleToCollectionFilter = isConvertibleToCollectionFilter;
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