node_modules/@angular/core/schematics/migrations/static-queries/angular/ng_query_visitor.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/ng_query_visitor", ["require", "exports", "typescript", "@angular/core/schematics/utils/ng_decorators", "@angular/core/schematics/utils/typescript/class_declaration", "@angular/core/schematics/utils/typescript/property_name", "@angular/core/schematics/migrations/static-queries/angular/directive_inputs", "@angular/core/schematics/migrations/static-queries/angular/query-definition"], 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 class_declaration_1 = require("@angular/core/schematics/utils/typescript/class_declaration");
    const property_name_1 = require("@angular/core/schematics/utils/typescript/property_name");
    const directive_inputs_1 = require("@angular/core/schematics/migrations/static-queries/angular/directive_inputs");
    const query_definition_1 = require("@angular/core/schematics/migrations/static-queries/angular/query-definition");
    /**
     * Visitor that can be used to determine Angular queries within given TypeScript nodes.
     * Besides resolving queries, the visitor also records class relations and searches for
     * Angular input setters which can be used to analyze the timing usage of a given query.
     */
    class NgQueryResolveVisitor {
        constructor(typeChecker) {
            this.typeChecker = typeChecker;
            /** Resolved Angular query definitions. */
            this.resolvedQueries = new Map();
            /** Maps a class declaration to its class metadata. */
            this.classMetadata = new Map();
        }
        visitNode(node) {
            switch (node.kind) {
                case ts.SyntaxKind.PropertyDeclaration:
                    this.visitPropertyDeclaration(node);
                    break;
                case ts.SyntaxKind.ClassDeclaration:
                    this.visitClassDeclaration(node);
                    break;
                case ts.SyntaxKind.GetAccessor:
                case ts.SyntaxKind.SetAccessor:
                    this.visitAccessorDeclaration(node);
                    break;
            }
            ts.forEachChild(node, n => this.visitNode(n));
        }
        visitPropertyDeclaration(node) {
            this._recordQueryDeclaration(node, node, property_name_1.getPropertyNameText(node.name));
        }
        visitAccessorDeclaration(node) {
            this._recordQueryDeclaration(node, null, property_name_1.getPropertyNameText(node.name));
        }
        visitClassDeclaration(node) {
            this._recordClassInputSetters(node);
            this._recordClassInheritances(node);
        }
        _recordQueryDeclaration(node, property, queryName) {
            if (!node.decorators || !node.decorators.length) {
                return;
            }
            const ngDecorators = ng_decorators_1.getAngularDecorators(this.typeChecker, node.decorators);
            const queryDecorator = ngDecorators.find(({ name }) => name === 'ViewChild' || name === 'ContentChild');
            // Ensure that the current property declaration is defining a query.
            if (!queryDecorator) {
                return;
            }
            const queryContainer = class_declaration_1.findParentClassDeclaration(node);
            // If the query is not located within a class declaration, skip this node.
            if (!queryContainer) {
                return;
            }
            const sourceFile = node.getSourceFile();
            const newQueries = this.resolvedQueries.get(sourceFile) || [];
            this.resolvedQueries.set(sourceFile, newQueries.concat({
                name: queryName,
                type: queryDecorator.name === 'ViewChild' ? query_definition_1.QueryType.ViewChild : query_definition_1.QueryType.ContentChild,
                node,
                property,
                decorator: queryDecorator,
                container: queryContainer,
            }));
        }
        _recordClassInputSetters(node) {
            const resolvedInputNames = directive_inputs_1.getInputNamesOfClass(node, this.typeChecker);
            if (resolvedInputNames) {
                const classMetadata = this._getClassMetadata(node);
                classMetadata.ngInputNames = resolvedInputNames;
                this.classMetadata.set(node, classMetadata);
            }
        }
        _recordClassInheritances(node) {
            const baseTypes = class_declaration_1.getBaseTypeIdentifiers(node);
            if (!baseTypes || baseTypes.length !== 1) {
                return;
            }
            const superClass = baseTypes[0];
            const baseClassMetadata = this._getClassMetadata(node);
            // We need to resolve the value declaration through the resolved type as the base
            // class could be declared in different source files and the local symbol won't
            // contain a value declaration as the value is not declared locally.
            const symbol = this.typeChecker.getTypeAtLocation(superClass).getSymbol();
            if (symbol && symbol.valueDeclaration && ts.isClassDeclaration(symbol.valueDeclaration)) {
                const extendedClass = symbol.valueDeclaration;
                const classMetadataExtended = this._getClassMetadata(extendedClass);
                // Record all classes that derive from the given class. This makes it easy to
                // determine all classes that could potentially use inherited queries statically.
                classMetadataExtended.derivedClasses.push(node);
                this.classMetadata.set(extendedClass, classMetadataExtended);
                // Record the super class of the current class.
                baseClassMetadata.superClass = extendedClass;
                this.classMetadata.set(node, baseClassMetadata);
            }
        }
        _getClassMetadata(node) {
            return this.classMetadata.get(node) || { derivedClasses: [], superClass: null, ngInputNames: [] };
        }
    }
    exports.NgQueryResolveVisitor = NgQueryResolveVisitor;
});
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All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nimport * as ts from 'typescript';\n\nimport {ResolvedTemplate} from '../../../utils/ng_component_template';\nimport {getAngularDecorators} from '../../../utils/ng_decorators';\nimport {findParentClassDeclaration, getBaseTypeIdentifiers} from '../../../utils/typescript/class_declaration';\nimport {getPropertyNameText} from '../../../utils/typescript/property_name';\n\nimport {getInputNamesOfClass} from './directive_inputs';\nimport {NgQueryDefinition, QueryType} from './query-definition';\n\n\n/** Resolved metadata of a given class. */\nexport interface ClassMetadata {\n  /** List of class declarations that derive from the given class. */\n  derivedClasses: ts.ClassDeclaration[];\n  /** Super class of the given class. */\n  superClass: ts.ClassDeclaration|null;\n  /** List of property names that declare an Angular input within the given class. */\n  ngInputNames: string[];\n  /** Component template that belongs to that class if present. */\n  template?: ResolvedTemplate;\n}\n\n/** Type that describes a map which can be used to get a class declaration's metadata. */\nexport type ClassMetadataMap = Map<ts.ClassDeclaration, ClassMetadata>;\n\n/**\n * Visitor that can be used to determine Angular queries within given TypeScript nodes.\n * Besides resolving queries, the visitor also records class relations and searches for\n * Angular input setters which can be used to analyze the timing usage of a given query.\n */\nexport class NgQueryResolveVisitor {\n  /** Resolved Angular query definitions. */\n  resolvedQueries = new Map<ts.SourceFile, NgQueryDefinition[]>();\n\n  /** Maps a class declaration to its class metadata. */\n  classMetadata: ClassMetadataMap = new Map();\n\n  constructor(public typeChecker: ts.TypeChecker) {}\n\n  visitNode(node: ts.Node) {\n    switch (node.kind) {\n      case ts.SyntaxKind.PropertyDeclaration:\n        this.visitPropertyDeclaration(node as ts.PropertyDeclaration);\n        break;\n      case ts.SyntaxKind.ClassDeclaration:\n        this.visitClassDeclaration(node as ts.ClassDeclaration);\n        break;\n      case ts.SyntaxKind.GetAccessor:\n      case ts.SyntaxKind.SetAccessor:\n        this.visitAccessorDeclaration(node as ts.AccessorDeclaration);\n        break;\n    }\n\n    ts.forEachChild(node, n => this.visitNode(n));\n  }\n\n  private visitPropertyDeclaration(node: ts.PropertyDeclaration) {\n    this._recordQueryDeclaration(node, node, getPropertyNameText(node.name));\n  }\n\n  private visitAccessorDeclaration(node: ts.AccessorDeclaration) {\n    this._recordQueryDeclaration(node, null, getPropertyNameText(node.name));\n  }\n\n  private visitClassDeclaration(node: ts.ClassDeclaration) {\n    this._recordClassInputSetters(node);\n    this._recordClassInheritances(node);\n  }\n\n  private _recordQueryDeclaration(\n      node: ts.Node, property: ts.PropertyDeclaration|null, queryName: string|null) {\n    if (!node.decorators || !node.decorators.length) {\n      return;\n    }\n\n    const ngDecorators = getAngularDecorators(this.typeChecker, node.decorators);\n    const queryDecorator =\n        ngDecorators.find(({name}) => name === 'ViewChild' || name === 'ContentChild');\n\n    // Ensure that the current property declaration is defining a query.\n    if (!queryDecorator) {\n      return;\n    }\n\n    const queryContainer = findParentClassDeclaration(node);\n\n    // If the query is not located within a class declaration, skip this node.\n    if (!queryContainer) {\n      return;\n    }\n\n    const sourceFile = node.getSourceFile();\n    const newQueries = this.resolvedQueries.get(sourceFile) || [];\n\n    this.resolvedQueries.set(sourceFile, newQueries.concat({\n      name: queryName,\n      type: queryDecorator.name === 'ViewChild' ? QueryType.ViewChild : QueryType.ContentChild,\n      node,\n      property,\n      decorator: queryDecorator,\n      container: queryContainer,\n    }));\n  }\n\n  private _recordClassInputSetters(node: ts.ClassDeclaration) {\n    const resolvedInputNames = getInputNamesOfClass(node, this.typeChecker);\n\n    if (resolvedInputNames) {\n      const classMetadata = this._getClassMetadata(node);\n\n      classMetadata.ngInputNames = resolvedInputNames;\n      this.classMetadata.set(node, classMetadata);\n    }\n  }\n\n  private _recordClassInheritances(node: ts.ClassDeclaration) {\n    const baseTypes = getBaseTypeIdentifiers(node);\n\n    if (!baseTypes || baseTypes.length !== 1) {\n      return;\n    }\n\n    const superClass = baseTypes[0];\n    const baseClassMetadata = this._getClassMetadata(node);\n\n    // We need to resolve the value declaration through the resolved type as the base\n    // class could be declared in different source files and the local symbol won't\n    // contain a value declaration as the value is not declared locally.\n    const symbol = this.typeChecker.getTypeAtLocation(superClass).getSymbol();\n\n    if (symbol && symbol.valueDeclaration && ts.isClassDeclaration(symbol.valueDeclaration)) {\n      const extendedClass = symbol.valueDeclaration;\n      const classMetadataExtended = this._getClassMetadata(extendedClass);\n\n      // Record all classes that derive from the given class. This makes it easy to\n      // determine all classes that could potentially use inherited queries statically.\n      classMetadataExtended.derivedClasses.push(node);\n      this.classMetadata.set(extendedClass, classMetadataExtended);\n\n      // Record the super class of the current class.\n      baseClassMetadata.superClass = extendedClass;\n      this.classMetadata.set(node, baseClassMetadata);\n    }\n  }\n\n  private _getClassMetadata(node: ts.ClassDeclaration): ClassMetadata {\n    return this.classMetadata.get(node) || {derivedClasses: [], superClass: null, ngInputNames: []};\n  }\n}\n"]}