Validate variables from other source

[ZCH2005]

We are exploring Langium to see if it can be used in our IDE. Our language grammar is similar to Lox: https://github.com/TypeFox/langium-lox/blob/main/src/language-server/lox.langium.

But in our IDE, the variable declarations are not allowed in editor. The variables infomation (name, type...) can be obtained as different format, like JSON. How to let Langium know those variables? Is it enough to only implement our own scope provider? Shall we also need to implement our own NameProvider and ScopeComputation?

[msujew]

Hey @ZCH2005,

have you seen #1329? I think the question is fairly similar. The anwser I posted in #1329 (comment) should help you along.

[ZCH2005]

Hi @msujew,

Thank your very much for the reply.
After reading your comments on #1329, and then following the tutorial of buildin-libraries, I updated the vs code extension in Lox sample to monitor a file in which Lox variables are defined (e.g., var aaa: number). After launching the vs code extension host, there is no error to use the variables defined in the file.

fs.watchFile("C:\temp\test.lox", (eventType, filename) => {
buildinLox = fs.readFileSync("C:\temp\test.lox", { encoding: 'utf8', flag: 'r' });
this.documentBuilder.update([URI.parse('builtin:///library.lox')],[]);
});

In the last part of the buildin-libraries, the DslLibraryFileSystemProvider was added to src/extension.ts. But we are using Monaco Editor Wrapper and I could not figure out how to implement the same DslLibraryFileSystemProvider in Monaco Editor Wrapper, do you have any samples?

[msujew]

After launching the vs code extension host, there is no error to use the variables defined in the file.

So you're saying it works? That's great!

I could not figure out how to implement the same DslLibraryFileSystemProvider in Monaco Editor Wrapper, do you have any samples?

You are best served to ask the maintainers directly.