Eclipse中自定义.pjs文件实现JS风格格式化的技术咨询

Alright, let's tackle how to get your custom .pjs files formatted just like JavaScript in Eclipse—whether you're hitting Ctrl+Shift+F or saving the file. Here are two reliable approaches, starting with the easiest one:

Approach 1: Associate .pjs with JavaScript Editor & Enable Auto-Format on Save #

This method leverages Eclipse's built-in JavaScript tools, no plugin development required.

• Step 1: Link .pjs files to the JavaScript Editor
  Open Eclipse's preferences (Window > Preferences on Windows/Linux; Eclipse > Settings on Mac). Navigate to General > Editors > File Associations.

  • Click Add... under "File types", enter *.pjs, and confirm.
  • In the "Associated editors" list, select JavaScript Editor and click Default to set it as the default editor for .pjs files.

• Step 2: Configure Formatting on Save
  Still in preferences, go to General > Editors > Text Editors > Save Actions.

  • Check the box for "Perform the selected actions on save".
  • Tick "Format source code", then click Configure... to ensure your preferred JavaScript formatter is selected (you can tweak formatter rules under JavaScript > Code Style > Formatter if needed).
  • Since .pjs files are now linked to the JavaScript Editor, they'll inherit this save action.

• Step 3: Test the Setup
  Open any .pjs file, mess up the indentation, and hit Ctrl+Shift+F—it should format just like JS. Make a small edit, save the file, and confirm the formatting applies automatically.

Approach 2: Define .pjs as a JavaScript Content Type (For Edge Cases) #

If Approach 1 doesn't work (e.g., your Eclipse uses a specialized JS plugin), explicitly mark .pjs as JavaScript content:

• Go to General > Content Types in preferences.
• Expand Text > JavaScript Source File, click Add..., and enter *.pjs to add it to the JS content type.
• Repeat the file association and save action steps from Approach 1—this ensures Eclipse treats .pjs files as full-fledged JS files under the hood.

Troubleshooting Tips #

• If Ctrl+Shift+F doesn't trigger formatting: Check if the shortcut is mapped correctly. Go to General > Keys, search for "Format", and confirm the binding is Ctrl+Shift+F with an applicable scope (like "JavaScript Editor" or "Global").
• If save actions don't run: Double-check that "Format source code" is enabled in Save Actions, and that your .pjs file is indeed opened with the JavaScript Editor (look at the editor tab's label or right-click the file > Open With).

内容的提问来源于stack exchange，提问作者mohan