adaptive-expressions
Version:
Common Expression Language
60 lines • 2.37 kB
JavaScript
;
/**
* @module adaptive-expressions
*/
/**
* Copyright (c) Microsoft Corporation. All rights reserved.
* Licensed under the MIT License.
*/
Object.defineProperty(exports, "__esModule", { value: true });
exports.IndexOf = void 0;
const expressionEvaluator_1 = require("../expressionEvaluator");
const expressionType_1 = require("../expressionType");
const functionUtils_1 = require("../functionUtils");
const functionUtils_internal_1 = require("../functionUtils.internal");
const returnType_1 = require("../returnType");
/**
* Returns the index of the first occurrence of a value in an array.
* The zero-based index position of value if that value is found, or -1 if it is not.
*/
class IndexOf extends expressionEvaluator_1.ExpressionEvaluator {
/**
* Initializes a new instance of the [IndexOf](xref:adaptive-expressions.IndexOf) class.
*/
constructor() {
super(expressionType_1.ExpressionType.IndexOf, IndexOf.evaluator, returnType_1.ReturnType.Number, IndexOf.validator);
}
/**
* @private
*/
static evaluator(expression, state, options) {
let value = -1;
const { args, error: childrenError } = functionUtils_1.FunctionUtils.evaluateChildren(expression, state, options);
let error = childrenError;
if (!error) {
if (args[0] == null || typeof args[0] === 'string') {
if (args[1] === undefined || typeof args[1] === 'string') {
value = functionUtils_internal_1.InternalFunctionUtils.parseStringOrUndefined(args[0]).indexOf(functionUtils_internal_1.InternalFunctionUtils.parseStringOrUndefined(args[1]));
}
else {
error = `Can only look for indexof string in ${expression}`;
}
}
else if (Array.isArray(args[0])) {
value = args[0].indexOf(args[1]);
}
else {
error = `${expression} works only on string or list.`;
}
}
return { value, error };
}
/**
* @private
*/
static validator(expression) {
functionUtils_1.FunctionUtils.validateOrder(expression, [], returnType_1.ReturnType.String | returnType_1.ReturnType.Array, returnType_1.ReturnType.Object);
}
}
exports.IndexOf = IndexOf;
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