Struct RustCompletionProvider 

pub struct RustCompletionProvider;

Rust-specific completion provider (fallback)

This is a fallback provider for Rust code when external LSP (rust-analyzer) is unavailable.

Behavior

Generates Rust-specific completions including:

• Rust keywords (fn, let, mut, const, struct, enum, trait, impl, etc.)
• Rust-specific snippets (function templates, impl blocks, match expressions, etc.)
• Rust traits and standard library types
• Rust macros (println!, format!, vec!, etc.)
• Derive attributes
• Available symbols from code context

When Used

• External LSP (rust-analyzer) is not configured
• rust-analyzer is not installed or fails to start
• rust-analyzer times out or becomes unresponsive

Limitations

• No type inference or semantic analysis
• Cannot resolve imports or dependencies
• No project-aware completions
• Cannot determine variable scope or lifetime
• Limited to hardcoded keywords and patterns

Recommended Configuration

For production-quality Rust completions, install and configure rust-analyzer:

rustup component add rust-analyzer

Then configure it in lsp-servers.yaml:

servers:
  rust:
    - language: rust
      executable: rust-analyzer
      enabled: true

See https://github.com/moabualruz/ricecoder/wiki/External-LSP-Configuration.md for details.

Trait Implementations

impl CompletionProvider for RustCompletionProvider

fn language(&self) -> &str

Get the language this provider supports

fn generate_completions<'life0, 'life1, 'life2, 'async_trait>( &'life0 self, _code: &'life1 str, _position: Position, context: &'life2 CompletionContext, ) -> Pin<Box<dyn Future<Output = CompletionResult<Vec<CompletionItem>>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait, 'life2: 'async_trait,

Generate completions for this language