adaptive-expressions
Version:
Common Expression Language
79 lines • 2.61 kB
JavaScript
;
/**
* @module adaptive-expressions
*/
/**
* Copyright (c) Microsoft Corporation. All rights reserved.
* Licensed under the MIT License.
*/
var __importStar = (this && this.__importStar) || function (mod) {
if (mod && mod.__esModule) return mod;
var result = {};
if (mod != null) for (var k in mod) if (Object.hasOwnProperty.call(mod, k)) result[k] = mod[k];
result["default"] = mod;
return result;
};
Object.defineProperty(exports, "__esModule", { value: true });
const jsPath = __importStar(require("jspath"));
const expressionEvaluator_1 = require("../expressionEvaluator");
const expressionType_1 = require("../expressionType");
const functionUtils_1 = require("../functionUtils");
const returnType_1 = require("../returnType");
/**
* Check JSON or a JSON string for nodes or values that match a path expression, and return the matching nodes.
*/
class JPath extends expressionEvaluator_1.ExpressionEvaluator {
/**
* Initializes a new instance of the [JPath](xref:adaptive-expressions.JPath) class.
*/
constructor() {
super(expressionType_1.ExpressionType.JPath, JPath.evaluator(), returnType_1.ReturnType.Object, JPath.validator);
}
/**
* @private
*/
static evaluator() {
return functionUtils_1.FunctionUtils.applyWithError((args) => JPath.evalJPath(args[0], args[1].toString()));
}
/**
* @private
*/
// eslint-disable-next-line @typescript-eslint/ban-types
static evalJPath(jsonEntity, path) {
let error;
let evaled;
// eslint-disable-next-line @typescript-eslint/ban-types
let json;
if (typeof jsonEntity === 'string') {
try {
json = JSON.parse(jsonEntity);
}
catch (_a) {
error = `${jsonEntity} is not a valid json string`;
}
}
else if (typeof jsonEntity === 'object') {
json = jsonEntity;
}
else {
error = 'the first parameter should be either an object or a string';
}
if (!error) {
try {
evaled = jsPath.apply(path, json);
}
catch (e) {
error = `${path} is not a valid path + ${e}`;
}
}
return { value: evaled, error };
}
/**
* @private
*/
static validator(expr) {
functionUtils_1.FunctionUtils.validateOrder(expr, undefined, returnType_1.ReturnType.Object, returnType_1.ReturnType.String);
}
}
exports.JPath = JPath;
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