@digitalasset/daml-ledger/lib/validation/Union.js

DAML Ledger API Node.js bindings

"use strict";
// Copyright (c) 2021 Digital Asset (Switzerland) GmbH and/or its affiliates. All rights reserved.
// SPDX-License-Identifier: Apache-2.0
Object.defineProperty(exports, "__esModule", { value: true });
exports.union = void 0;
const Validation_1 = require("./Validation");
const util_1 = require("util");
function union(type, tag, values) {
    return {
        tag: tag,
        type: type,
        values: values,
        validate(value, key, tree) {
            const node = Validation_1.init(key, tree);
            const actualType = Validation_1.typeOf(value);
            if (actualType !== 'object') {
                node.errors.push({
                    errorType: 'type-error',
                    expectedType: type,
                    actualType: actualType
                });
                return node;
            }
            const typeTags = values();
            const typeTag = value[this.tag];
            if (typeTag in typeTags) {
                const validation = typeTags[typeTag];
                if (key && tree) {
                    return validation.validate(value, key, tree);
                }
                else {
                    return validation.validate(value);
                }
            }
            else if (typeTag === null || typeTag === undefined) {
                node.errors.push({
                    errorType: 'missing-type-tag',
                    expectedTypeTags: Object.keys(typeTags)
                });
                return node;
            }
            else {
                node.errors.push({
                    errorType: 'unexpected-type-tag',
                    expectedTypeTags: Object.keys(typeTags),
                    actualTypeTag: typeof typeTag === 'string' ? typeTag : util_1.inspect(typeTag)
                });
                return node;
            }
        }
    };
}
exports.union = union;
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