mirror of
https://github.com/react/react-native-devtools-frontend.git
synced 2026-10-07 04:26:32 +08:00
Simon Zünd
35f8d67915
Now that every ContentProvider is actually a SafeContentProvider, we can start migrating to the safer API. R=pfaffe@chromium.org Bug: 342529015 Change-Id: I7b3ce53846bb85d447f0a707409235814bed9661 Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/5578160 Commit-Queue: Simon Zünd <szuend@chromium.org> Reviewed-by: Philip Pfaffe <pfaffe@chromium.org>
38 lines
1.5 KiB
TypeScript
38 lines
1.5 KiB
TypeScript
// Copyright 2023 The Chromium Authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style license that can be
|
|
// found in the LICENSE file.
|
|
|
|
import type * as SDK from '../../core/sdk/sdk.js';
|
|
import * as Formatter from '../formatter/formatter.js';
|
|
import * as TextUtils from '../text_utils/text_utils.js';
|
|
|
|
type ScopeTreeNode = Formatter.FormatterWorkerPool.ScopeTreeNode;
|
|
|
|
/** If a script failed to parse, we stash null in order to prevent unnecessary re-parsing */
|
|
const scopeTrees = new WeakMap<SDK.Script.Script, Promise<ScopeTreeNode|null>>();
|
|
|
|
/**
|
|
* Computes and caches the scope tree for `script`.
|
|
*
|
|
* We use {@link SDK.Script.Script} as a key to uniquely identify scripts.
|
|
* {@link SDK.Script.Script} boils down to "target" + "script ID". This
|
|
* duplicates work in case of identitical script running on multiple targets
|
|
* (e.g. workers).
|
|
*/
|
|
export function scopeTreeForScript(script: SDK.Script.Script): Promise<ScopeTreeNode|null> {
|
|
let promise = scopeTrees.get(script);
|
|
if (promise === undefined) {
|
|
promise = script.requestContentData().then(content => {
|
|
if (TextUtils.ContentData.ContentData.isError(content)) {
|
|
return null;
|
|
}
|
|
|
|
const sourceType = script.isModule ? 'module' : 'script';
|
|
return Formatter.FormatterWorkerPool.formatterWorkerPool().javaScriptScopeTree(content.text, sourceType);
|
|
});
|
|
scopeTrees.set(script, promise);
|
|
}
|
|
// We intentionally return `null` here if the script already failed to parse once.
|
|
return promise;
|
|
}
|