jinaga/dist/storage.js

Data management for web and mobile applications.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.validateGiven = exports.computeTupleSubsetHash = exports.uniqueFactReferences = exports.factEnvelopeEquals = exports.factReferenceEquals = void 0;
const hash_1 = require("./fact/hash");
const fn_1 = require("./util/fn");
function factReferenceEquals(a) {
    return (r) => r.hash === a.hash && r.type === a.type;
}
exports.factReferenceEquals = factReferenceEquals;
function factEnvelopeEquals(r) {
    return (e) => e.fact.hash === r.hash && e.fact.type === r.type;
}
exports.factEnvelopeEquals = factEnvelopeEquals;
function uniqueFactReferences(references) {
    return references.filter((value, index, array) => {
        return (0, fn_1.findIndex)(array, factReferenceEquals(value)) === index;
    });
}
exports.uniqueFactReferences = uniqueFactReferences;
function computeTupleSubsetHash(tuple, subset) {
    const parentTuple = Object.getOwnPropertyNames(tuple)
        .filter(name => subset.some(s => s === name))
        .reduce((t, name) => (Object.assign(Object.assign({}, t), { [name]: tuple[name] })), {});
    const parentTupleHash = (0, hash_1.computeObjectHash)(parentTuple);
    return parentTupleHash;
}
exports.computeTupleSubsetHash = computeTupleSubsetHash;
function validateGiven(start, specification) {
    // Verify that the number of start facts equals the number of inputs
    if (start.length !== specification.given.length) {
        throw new Error(`The number of start facts (${start.length}) does not equal the number of inputs (${specification.given.length})`);
    }
    // Verify that the input type matches the start fact type
    for (let i = 0; i < start.length; i++) {
        if (start[i].type !== specification.given[i].label.type) {
            throw new Error(`The type of start fact ${i} (${start[i].type}) does not match the type of input ${i} (${specification.given[i].label.type})`);
        }
    }
}
exports.validateGiven = validateGiven;
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