Generating JSON file from program

[MarianBaba]

Hello everyone!

While using the playground provided here, I noticed that there is a dinamically updated json form of the program's AST. I was wondering if there is a way to do this in VS Code with programs written using a DSL I designed. I know a json form of the grammar is generated automatically, but I would like to know if there is a way to do this for programs while they are being written using a custom designed DSL.

For clarification, this is what I mean (right side of the image):

thank you in advance for the help!

[msujew]

@MarianBaba You can use the JsonSerializer service to generate such a JSON document. It is available in the language injection container.

langium/packages/langium/src/serializer/json-serializer.ts

Lines 64 to 78 in 2187f83

	/**
	* Utility service for transforming an `AstNode` into a JSON string and vice versa.
	*/
	export interface JsonSerializer {
	/**
	* Serialize an `AstNode` into a JSON `string`.
	* @param node The `AstNode` to be serialized.
	* @param space Adds indentation, white space, and line break characters to the return-value JSON text to make it easier to read.
	*/
	serialize(node: AstNode, options?: JsonSerializeOptions): string;
	/**
	* Deserialize (parse) a JSON `string` into an `AstNode`.
	*/
	deserialize(content: string): AstNode;
	}

[cdietrich]

are you looking for something like console.log(services.serializer.JsonSerializer.serialize(model))