@angular/core
Version:
Angular - the core framework
83 lines • 12.1 kB
JavaScript
/**
* @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/renderer-to-renderer2/util", ["require", "exports", "typescript", "@angular/core/schematics/utils/typescript/imports", "@angular/core/schematics/utils/typescript/symbol"], factory);
}
})(function (require, exports) {
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.findRendererReferences = void 0;
const ts = require("typescript");
const imports_1 = require("@angular/core/schematics/utils/typescript/imports");
const symbol_1 = require("@angular/core/schematics/utils/typescript/symbol");
/**
* Finds typed nodes (e.g. function parameters or class properties) that are referencing the old
* `Renderer`, as well as calls to the `Renderer` methods.
*/
function findRendererReferences(sourceFile, typeChecker, rendererImportSpecifier) {
const typedNodes = new Set();
const methodCalls = new Set();
const forwardRefs = new Set();
const forwardRefSpecifier = imports_1.getImportSpecifier(sourceFile, '@angular/core', 'forwardRef');
ts.forEachChild(sourceFile, function visitNode(node) {
if ((ts.isParameter(node) || ts.isPropertyDeclaration(node)) &&
symbol_1.isReferenceToImport(typeChecker, node.name, rendererImportSpecifier)) {
typedNodes.add(node);
}
else if (ts.isAsExpression(node) &&
symbol_1.isReferenceToImport(typeChecker, node.type, rendererImportSpecifier)) {
typedNodes.add(node);
}
else if (ts.isCallExpression(node)) {
if (ts.isPropertyAccessExpression(node.expression) &&
symbol_1.isReferenceToImport(typeChecker, node.expression.expression, rendererImportSpecifier)) {
methodCalls.add(node);
}
else if (
// If we're dealing with a forwardRef that's returning a Renderer.
forwardRefSpecifier && ts.isIdentifier(node.expression) &&
symbol_1.isReferenceToImport(typeChecker, node.expression, forwardRefSpecifier) &&
node.arguments.length) {
const rendererIdentifier = findRendererIdentifierInForwardRef(typeChecker, node, rendererImportSpecifier);
if (rendererIdentifier) {
forwardRefs.add(rendererIdentifier);
}
}
}
ts.forEachChild(node, visitNode);
});
return { typedNodes, methodCalls, forwardRefs };
}
exports.findRendererReferences = findRendererReferences;
/** Finds the identifier referring to the `Renderer` inside a `forwardRef` call expression. */
function findRendererIdentifierInForwardRef(typeChecker, node, rendererImport) {
const firstArg = node.arguments[0];
if (ts.isArrowFunction(firstArg) && rendererImport) {
// Check if the function is `forwardRef(() => Renderer)`.
if (ts.isIdentifier(firstArg.body) &&
symbol_1.isReferenceToImport(typeChecker, firstArg.body, rendererImport)) {
return firstArg.body;
}
else if (ts.isBlock(firstArg.body) && ts.isReturnStatement(firstArg.body.statements[0])) {
// Otherwise check if the expression is `forwardRef(() => { return Renderer })`.
const returnStatement = firstArg.body.statements[0];
if (returnStatement.expression && ts.isIdentifier(returnStatement.expression) &&
symbol_1.isReferenceToImport(typeChecker, returnStatement.expression, rendererImport)) {
return returnStatement.expression;
}
}
}
return null;
}
});
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AgICAgaXNSZWZlcmVuY2VUb0ltcG9ydCh0eXBlQ2hlY2tlciwgbm9kZS50eXBlLCByZW5kZXJlckltcG9ydFNwZWNpZmllcikpIHtcbiAgICAgIHR5cGVkTm9kZXMuYWRkKG5vZGUpO1xuICAgIH0gZWxzZSBpZiAodHMuaXNDYWxsRXhwcmVzc2lvbihub2RlKSkge1xuICAgICAgaWYgKHRzLmlzUHJvcGVydHlBY2Nlc3NFeHByZXNzaW9uKG5vZGUuZXhwcmVzc2lvbikgJiZcbiAgICAgICAgICBpc1JlZmVyZW5jZVRvSW1wb3J0KHR5cGVDaGVja2VyLCBub2RlLmV4cHJlc3Npb24uZXhwcmVzc2lvbiwgcmVuZGVyZXJJbXBvcnRTcGVjaWZpZXIpKSB7XG4gICAgICAgIG1ldGhvZENhbGxzLmFkZChub2RlKTtcbiAgICAgIH0gZWxzZSBpZiAoXG4gICAgICAgICAgLy8gSWYgd2UncmUgZGVhbGluZyB3aXRoIGEgZm9yd2FyZFJlZiB0aGF0J3MgcmV0dXJuaW5nIGEgUmVuZGVyZXIuXG4gICAgICAgICAgZm9yd2FyZFJlZlNwZWNpZmllciAmJiB0cy5pc0lkZW50aWZpZXIobm9kZS5leHByZXNzaW9uKSAmJlxuICAgICAgICAgIGlzUmVmZXJlbmNlVG9JbXBvcnQodHlwZUNoZWNrZXIsIG5vZGUuZXhwcmVzc2lvbiwgZm9yd2FyZFJlZlNwZWNpZmllcikgJiZcbiAgICAgICAgICBub2RlLmFyZ3VtZW50cy5sZW5ndGgpIHtcbiAgICAgICAgY29uc3QgcmVuZGVyZXJJZGVudGlmaWVyID1cbiAgICAgICAgICAgIGZpbmRSZW5kZXJlcklkZW50aWZpZXJJbkZvcndhcmRSZWYodHlwZUNoZWNrZXIsIG5vZGUsIHJlbmRlcmVySW1wb3J0U3BlY2lmaWVyKTtcbiAgICAgICAgaWYgKHJlbmRlcmVySWRlbnRpZmllcikge1xuICAgICAgICAgIGZvcndhcmRSZWZzLmFkZChyZW5kZXJlcklkZW50aWZpZXIpO1xuICAgICAgICB9XG4gICAgICB9XG4gICAgfVxuXG4gICAgdHMuZm9yRWFjaENoaWxkKG5vZGUsIHZpc2l0Tm9kZSk7XG4gIH0pO1xuXG4gIHJldHVybiB7dHlwZWROb2RlcywgbWV0aG9kQ2FsbHMsIGZvcndhcmRSZWZzfTtcbn1cblxuLyoqIEZpbmRzIHRoZSBpZGVudGlmaWVyIHJlZmVycmluZyB0byB0aGUgYFJlbmRlcmVyYCBpbnNpZGUgYSBgZm9yd2FyZFJlZmAgY2FsbCBleHByZXNzaW9uLiAqL1xuZnVuY3Rpb24gZmluZFJlbmRlcmVySWRlbnRpZmllckluRm9yd2FyZFJlZihcbiAgICB0eXBlQ2hlY2tlcjogdHMuVHlwZUNoZWNrZXIsIG5vZGU6IHRzLkNhbGxFeHByZXNzaW9uLFxuICAgIHJlbmRlcmVySW1wb3J0OiB0cy5JbXBvcnRTcGVjaWZpZXJ8bnVsbCk6IHRzLklkZW50aWZpZXJ8bnVsbCB7XG4gIGNvbnN0IGZpcnN0QXJnID0gbm9kZS5hcmd1bWVudHNbMF07XG5cbiAgaWYgKHRzLmlzQXJyb3dGdW5jdGlvbihmaXJzdEFyZykgJiYgcmVuZGVyZXJJbXBvcnQpIHtcbiAgICAvLyBDaGVjayBpZiB0aGUgZnVuY3Rpb24gaXMgYGZvcndhcmRSZWYoKCkgPT4gUmVuZGVyZXIpYC5cbiAgICBpZiAodHMuaXNJZGVudGlmaWVyKGZpcnN0QXJnLmJvZHkpICYmXG4gICAgICAgIGlzUmVmZXJlbmNlVG9JbXBvcnQodHlwZUNoZWNrZXIsIGZpcnN0QXJnLmJvZHksIHJlbmRlcmVySW1wb3J0KSkge1xuICAgICAgcmV0dXJuIGZpcnN0QXJnLmJvZHk7XG4gICAgfSBlbHNlIGlmICh0cy5pc0Jsb2NrKGZpcnN0QXJnLmJvZHkpICYmIHRzLmlzUmV0dXJuU3RhdGVtZW50KGZpcnN0QXJnLmJvZHkuc3RhdGVtZW50c1swXSkpIHtcbiAgICAgIC8vIE90aGVyd2lzZSBjaGVjayBpZiB0aGUgZXhwcmVzc2lvbiBpcyBgZm9yd2FyZFJlZigoKSA9PiB7IHJldHVybiBSZW5kZXJlciB9KWAuXG4gICAgICBjb25zdCByZXR1cm5TdGF0ZW1lbnQgPSBmaXJzdEFyZy5ib2R5LnN0YXRlbWVudHNbMF0gYXMgdHMuUmV0dXJuU3RhdGVtZW50O1xuXG4gICAgICBpZiAocmV0dXJuU3RhdGVtZW50LmV4cHJlc3Npb24gJiYgdHMuaXNJZGVudGlmaWVyKHJldHVyblN0YXRlbWVudC5leHByZXNzaW9uKSAmJlxuICAgICAgICAgIGlzUmVmZXJlbmNlVG9JbXBvcnQodHlwZUNoZWNrZXIsIHJldHVyblN0YXRlbWVudC5leHByZXNzaW9uLCByZW5kZXJlckltcG9ydCkpIHtcbiAgICAgICAgcmV0dXJuIHJldHVyblN0YXRlbWVudC5leHByZXNzaW9uO1xuICAgICAgfVxuICAgIH1cbiAgfVxuXG4gIHJldHVybiBudWxsO1xufVxuIl19