node_modules/@angular/core/schematics/migrations/template-var-assignment/angular/html_variable_assignment_visitor.js

/**
 * @license
 * Copyright Google LLC 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/template-var-assignment/angular/html_variable_assignment_visitor", ["require", "exports", "@angular/compiler", "@angular/compiler/src/render3/r3_ast"], factory);
    }
})(function (require, exports) {
    "use strict";
    Object.defineProperty(exports, "__esModule", { value: true });
    exports.HtmlVariableAssignmentVisitor = void 0;
    const compiler_1 = require("@angular/compiler");
    const r3_ast_1 = require("@angular/compiler/src/render3/r3_ast");
    /**
     * HTML AST visitor that traverses the Render3 HTML AST in order to find all
     * expressions that write to local template variables within bound events.
     */
    class HtmlVariableAssignmentVisitor extends r3_ast_1.NullVisitor {
        constructor() {
            super(...arguments);
            this.variableAssignments = [];
            this.currentVariables = [];
            this.expressionAstVisitor = new ExpressionAstVisitor(this.variableAssignments, this.currentVariables);
        }
        visitElement(element) {
            r3_ast_1.visitAll(this, element.outputs);
            r3_ast_1.visitAll(this, element.children);
        }
        visitTemplate(template) {
            // Keep track of the template variables which can be accessed by the template
            // child nodes through the implicit receiver.
            this.currentVariables.push(...template.variables);
            // Visit all children of the template. The template proxies the outputs of the
            // immediate child elements, so we just ignore outputs on the "Template" in order
            // to not visit similar bound events twice.
            r3_ast_1.visitAll(this, template.children);
            // Remove all previously added variables since all children that could access
            // these have been visited already.
            template.variables.forEach(v => {
                const variableIdx = this.currentVariables.indexOf(v);
                if (variableIdx !== -1) {
                    this.currentVariables.splice(variableIdx, 1);
                }
            });
        }
        visitBoundEvent(node) {
            node.handler.visit(this.expressionAstVisitor, node.handlerSpan);
        }
    }
    exports.HtmlVariableAssignmentVisitor = HtmlVariableAssignmentVisitor;
    /** AST visitor that resolves all variable assignments within a given expression AST. */
    class ExpressionAstVisitor extends compiler_1.RecursiveAstVisitor {
        constructor(variableAssignments, currentVariables) {
            super();
            this.variableAssignments = variableAssignments;
            this.currentVariables = currentVariables;
        }
        visitPropertyWrite(node, span) {
            if (node.receiver instanceof compiler_1.ImplicitReceiver &&
                this.currentVariables.some(v => v.name === node.name)) {
                this.variableAssignments.push({
                    node: node,
                    start: span.start.offset,
                    end: span.end.offset,
                });
            }
            super.visitPropertyWrite(node, span);
        }
    }
});
//# sourceMappingURL=data:application/json;base64,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