Function generate_application 

pub fn generate_application(
    document: &DampenDocument,
    model_name: &str,
    message_name: &str,
    handlers: &[HandlerSignature],
) -> Result<CodegenOutput, CodegenError>

Generate complete application code from a Dampen document

This is the main entry point for code generation. It orchestrates the generation of all necessary components.

Arguments

• document - Parsed Dampen document
• model_name - Name of the model struct (e.g., “Model”)
• message_name - Name of the message enum (e.g., “Message”)
• handlers - List of handler signatures

Returns

Ok(CodegenOutput) with generated code and warnings

Errors

Returns CodegenError if:

• Handler validation fails
• Widget generation fails