node_modules/@angular/core/schematics/migrations/static-queries/angular/directive_inputs.js

/**
 * @license
 * Copyright Google Inc. All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */
(function (factory) {
    if (typeof module === "object" && typeof module.exports === "object") {
        var v = factory(require, exports);
        if (v !== undefined) module.exports = v;
    }
    else if (typeof define === "function" && define.amd) {
        define("@angular/core/schematics/migrations/static-queries/angular/directive_inputs", ["require", "exports", "typescript", "@angular/core/schematics/utils/ng_decorators", "@angular/core/schematics/utils/typescript/property_name"], factory);
    }
})(function (require, exports) {
    "use strict";
    Object.defineProperty(exports, "__esModule", { value: true });
    const ts = require("typescript");
    const ng_decorators_1 = require("@angular/core/schematics/utils/ng_decorators");
    const property_name_1 = require("@angular/core/schematics/utils/typescript/property_name");
    /** Analyzes the given class and resolves the name of all inputs which are declared. */
    function getInputNamesOfClass(node, typeChecker) {
        const resolvedInputSetters = [];
        // Determines the names of all inputs defined in the current class declaration by
        // checking whether a given property/getter/setter has the "@Input" decorator applied.
        node.members.forEach(m => {
            if (!m.decorators || !m.decorators.length ||
                !ts.isPropertyDeclaration(m) && !ts.isSetAccessor(m) && !ts.isGetAccessor(m)) {
                return;
            }
            const inputDecorator = ng_decorators_1.getAngularDecorators(typeChecker, m.decorators).find(d => d.name === 'Input');
            if (inputDecorator && property_name_1.hasPropertyNameText(m.name)) {
                resolvedInputSetters.push(m.name.text);
            }
        });
        // Besides looking for immediate setters in the current class declaration, developers
        // can also define inputs in the directive metadata using the "inputs" property. We
        // also need to determine these inputs which are declared in the directive metadata.
        const metadataInputs = getInputNamesFromMetadata(node, typeChecker);
        if (metadataInputs) {
            resolvedInputSetters.push(...metadataInputs);
        }
        return resolvedInputSetters;
    }
    exports.getInputNamesOfClass = getInputNamesOfClass;
    /**
     * Determines the names of all inputs declared in the directive/component metadata
     * of the given class.
     */
    function getInputNamesFromMetadata(node, typeChecker) {
        if (!node.decorators || !node.decorators.length) {
            return null;
        }
        const decorator = ng_decorators_1.getAngularDecorators(typeChecker, node.decorators)
            .find(d => d.name === 'Directive' || d.name === 'Component');
        // In case no directive/component decorator could be found for this class, just
        // return null as there is no metadata where an input could be declared.
        if (!decorator) {
            return null;
        }
        const decoratorCall = decorator.node.expression;
        // In case the decorator does define any metadata, there is no metadata
        // where inputs could be declared. This is an edge case because there
        // always needs to be an object literal, but in case there isn't we just
        // want to skip the invalid decorator and return null.
        if (decoratorCall.arguments.length !== 1 ||
            !ts.isObjectLiteralExpression(decoratorCall.arguments[0])) {
            return null;
        }
        const metadata = decoratorCall.arguments[0];
        const inputs = metadata.properties.filter(ts.isPropertyAssignment)
            .find(p => property_name_1.getPropertyNameText(p.name) === 'inputs');
        // In case there is no "inputs" property in the directive metadata,
        // just return "null" as no inputs can be declared for this class.
        if (!inputs || !ts.isArrayLiteralExpression(inputs.initializer)) {
            return null;
        }
        return inputs.initializer.elements.filter(ts.isStringLiteralLike)
            .map(element => element.text.split(':')[0].trim());
    }
});
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