gas-html

Work in progress! Help and feedback welcome.

Trying to create vs-code language extension for Google App Script (GAS) html templates.

See:

• https://code.visualstudio.com/api/language-extensions/syntax-highlight-guide
• https://developers.google.com/apps-script/guides/html/templates

Usage

Copy and paste into the <user home>/.vscode/extensions folder and restart Code.

This will add a new language, "gas-html", with file extensions .ghtml and .gas-html. If you're editing a regular html file, you can still click the language in the bottom right of the editor and specify that the file is actually gas-html.

Status

Auto-completion

By adding <? ... ?> and <?= ... ?> into the brackets/pairs definitions in language-configuration.json those brackets will automatically close when editing gas-html files. So that's neat....

Token Parsing

If you open the command pallete and search "Developer: Inspect Editor Token and Scopes" you can see how the html is being parsed.

You can see that <? ... ?> snippets that are not in a special context get new tags:

• gas.tag.begin at the start
• gas.tag.end at the end
• meta.embedded.line.js in between

Tokens Start	Tokens Middle

I think this is a good start! But it the parsing gets messed up if the gas tags appear in other contexts, like within an html tag or javascript section.

Dev

See vsc-extension-quickstart.md for more development instructions.