cargdev/angular
1
0
Fork 0
Code Issues 6 Pull Requests Actions Packages Projects Releases Wiki Activity

fix(ivy): ngcc should process undecorated base classes (#30821)

Browse Source 
Currently undecorated classes are intentionally not processed
with ngcc. This is causing unexpected behavior because decorator
handlers such as `base_def.ts` are specifically interested in class
definitions without top-level decorators, so that the base definition
can be generated if there are Angular-specific class members.

In order to ensure that undecorated base-classes work as expected
with Ivy, we need to run the decorator handlers for all top-level
class declarations (not only for those with decorators). This is similar
to when `ngtsc` runs decorator handlers when analyzing source-files.

Resolves FW-1355. Fixes https://github.com/angular/components/issues/16178

PR Close #30821
This commit is contained in:
Paul Gschwendtner
2019-06-03 18:41:47 +02:00
committed by Igor Minar
parent 271d2b51a9
commit 2b4d5c7548
20 changed files with 520 additions and 367 deletions
Download Patch File Download Diff File Expand all files Collapse all files

28
packages/compiler-cli/ngcc/src/host/decorated_class.ts
View File

@ -1,28 +0,0 @@
/**
* @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
*/
import {ClassDeclaration, Decorator} from '../../../src/ngtsc/reflection';
/**
* A simple container that holds the details of a decorated class that has been
* found in a `DecoratedFile`.
*/
export class DecoratedClass {
/**
* Initialize a `DecoratedClass` that was found in a `DecoratedFile`.
* @param name The name of the class that has been found. This is mostly used
* for informational purposes.
* @param declaration The TypeScript AST node where this class is declared. In ES5 code, where a
* class can be represented by both a variable declaration and a function declaration (inside an
* IIFE), `declaration` will always refer to the outer variable declaration, which represents the
* class to the rest of the program.
* @param decorators The collection of decorators that have been found on this class.
*/
constructor(
public name: string, public declaration: ClassDeclaration, public decorators: Decorator[]) {}
}

52
packages/compiler-cli/ngcc/src/host/esm2015_host.ts
View File

@ -13,7 +13,6 @@ import {Logger} from '../logging/logger';
import {BundleProgram} from '../packages/bundle_program';
import {findAll, getNameText, hasNameIdentifier, isDefined} from '../utils';
import {DecoratedClass} from './decorated_class';
import {ModuleWithProvidersFunction, NgccReflectionHost, PRE_R3_MARKER, SwitchableVariableDeclaration, isSwitchableVariableDeclaration} from './ngcc_host';
export const DECORATORS = 'decorators' as ts.__String;
@ -233,6 +232,16 @@ export class Esm2015ReflectionHost extends TypeScriptReflectionHost implements N
return superDeclaration;
}
/** Gets all decorators of the given class symbol. */
getDecoratorsOfSymbol(symbol: ClassSymbol): Decorator[]|null {
const decoratorsProperty = this.getStaticProperty(symbol, DECORATORS);
if (decoratorsProperty) {
return this.getClassDecoratorsFromStaticProperty(decoratorsProperty);
} else {
return this.getClassDecoratorsFromHelperCall(symbol);
}
}
/**
* Search the given module for variable declarations in which the initializer
* is an identifier marked with the `PRE_R3_MARKER`.
@ -306,24 +315,24 @@ export class Esm2015ReflectionHost extends TypeScriptReflectionHost implements N
}
/**
* Find all the classes that contain decorations in a given file.
* @param sourceFile The source file to search for decorated classes.
* @returns An array of decorated classes.
* Find all top-level class symbols in the given file.
* @param sourceFile The source file to search for classes.
* @returns An array of class symbols.
*/
findDecoratedClasses(sourceFile: ts.SourceFile): DecoratedClass[] {
const classes: DecoratedClass[] = [];
findClassSymbols(sourceFile: ts.SourceFile): ClassSymbol[] {
const classes: ClassSymbol[] = [];
this.getModuleStatements(sourceFile).forEach(statement => {
if (ts.isVariableStatement(statement)) {
statement.declarationList.declarations.forEach(declaration => {
const decoratedClass = this.getDecoratedClassFromSymbol(this.getClassSymbol(declaration));
if (decoratedClass) {
classes.push(decoratedClass);
const classSymbol = this.getClassSymbol(declaration);
if (classSymbol) {
classes.push(classSymbol);
}
});
} else if (ts.isClassDeclaration(statement)) {
const decoratedClass = this.getDecoratedClassFromSymbol(this.getClassSymbol(statement));
if (decoratedClass) {
classes.push(decoratedClass);
const classSymbol = this.getClassSymbol(statement);
if (classSymbol) {
classes.push(classSymbol);
}
}
});
@ -488,25 +497,6 @@ export class Esm2015ReflectionHost extends TypeScriptReflectionHost implements N
return Array.from(sourceFile.statements);
}
protected getDecoratorsOfSymbol(symbol: ClassSymbol): Decorator[]|null {
const decoratorsProperty = this.getStaticProperty(symbol, DECORATORS);
if (decoratorsProperty) {
return this.getClassDecoratorsFromStaticProperty(decoratorsProperty);
} else {
return this.getClassDecoratorsFromHelperCall(symbol);
}
}
protected getDecoratedClassFromSymbol(symbol: ClassSymbol|undefined): DecoratedClass|null {
if (symbol) {
const decorators = this.getDecoratorsOfSymbol(symbol);
if (decorators && decorators.length) {
return new DecoratedClass(symbol.name, symbol.valueDeclaration, decorators);
}
}
return null;
}
/**
* Walk the AST looking for an assignment to the specified symbol.
* @param node The current node we are searching.

19
packages/compiler-cli/ngcc/src/host/esm5_host.ts
View File

@ -211,6 +211,16 @@ export class Esm5ReflectionHost extends Esm2015ReflectionHost {
return this.getMembersOfSymbol(innerFunctionSymbol);
}
/** Gets all decorators of the given class symbol. */
getDecoratorsOfSymbol(symbol: ClassSymbol): Decorator[]|null {
// The necessary info is on the inner function declaration (inside the ES5 class IIFE).
const innerFunctionSymbol =
this.getInnerFunctionSymbolFromClassDeclaration(symbol.valueDeclaration);
if (!innerFunctionSymbol) return null;
return super.getDecoratorsOfSymbol(innerFunctionSymbol);
}
///////////// Protected Helpers /////////////
@ -321,15 +331,6 @@ export class Esm5ReflectionHost extends Esm2015ReflectionHost {
return super.getConstructorParamInfo(innerFunctionSymbol, parameterNodes);
}
protected getDecoratorsOfSymbol(symbol: ClassSymbol): Decorator[]|null {
// The necessary info is on the inner function declaration (inside the ES5 class IIFE).
const innerFunctionSymbol =
this.getInnerFunctionSymbolFromClassDeclaration(symbol.valueDeclaration);
if (!innerFunctionSymbol) return null;
return super.getDecoratorsOfSymbol(innerFunctionSymbol);
}
/**
* Get the parameter type and decorators for the constructor of a class,
* where the information is stored on a static method of the class.

18
packages/compiler-cli/ngcc/src/host/ngcc_host.ts
View File

@ -6,8 +6,7 @@
* found in the LICENSE file at https://angular.io/license
*/
import * as ts from 'typescript';
import {ClassDeclaration, ClassSymbol, Declaration, ReflectionHost} from '../../../src/ngtsc/reflection';
import {DecoratedClass} from './decorated_class';
import {ClassDeclaration, ClassSymbol, Declaration, Decorator, ReflectionHost} from '../../../src/ngtsc/reflection';
export const PRE_R3_MARKER = '__PRE_R3__';
export const POST_R3_MARKER = '__POST_R3__';
@ -64,11 +63,18 @@ export interface NgccReflectionHost extends ReflectionHost {
getSwitchableDeclarations(module: ts.Node): SwitchableVariableDeclaration[];
/**
* Find all the classes that contain decorations in a given file.
* @param sourceFile The source file to search for decorated classes.
* @returns An array of decorated classes.
* Retrieves all decorators of a given class symbol.
* @param symbol Class symbol that can refer to a declaration which can hold decorators.
* @returns An array of decorators or null if none are declared.
*/
findDecoratedClasses(sourceFile: ts.SourceFile): DecoratedClass[];
getDecoratorsOfSymbol(symbol: ClassSymbol): Decorator[]|null;
/**
* Retrieves all class symbols of a given source file.
* @param sourceFile The source file to search for classes.
* @returns An array of found class symbols.
*/
findClassSymbols(sourceFile: ts.SourceFile): ClassSymbol[];
/**
* Search the given source file for exported functions and static class methods that return