Rust Code Navigator

Navigate large Rust codebases efficiently using Language Server Protocol.

Usage

/rust-code-navigator <symbol> [in file.rs:line]

Examples:

• /rust-code-navigator parse_config - Find definition of parse_config
• /rust-code-navigator MyStruct in src/lib.rs:42 - Navigate from specific location

LSP Operations

1. Go to Definition

Find where a symbol is defined.

LSP(
  operation: "goToDefinition",
  filePath: "src/main.rs",
  line: 25,
  character: 10
)

Use when:

• User asks "where is X defined?"
• User wants to understand a type/function
• Ctrl+click equivalent

2. Find References

Find all usages of a symbol.

LSP(
  operation: "findReferences",
  filePath: "src/lib.rs",
  line: 15,
  character: 8
)

Use when:

• User asks "who uses X?"
• Before refactoring/renaming
• Understanding impact of changes

3. Hover Information

Get type and documentation for a symbol.

LSP(
  operation: "hover",
  filePath: "src/main.rs",
  line: 30,
  character: 15
)

Use when:

• User asks "what type is X?"
• User wants documentation
• Quick type checking

Workflow

User: "Where is the Config struct defined?"
    │
    ▼
[1] Search for "Config" in workspace
    LSP(operation: "workspaceSymbol", ...)
    │
    ▼
[2] If multiple results, ask user to clarify
    │
    ▼
[3] Go to definition
    LSP(operation: "goToDefinition", ...)
    │
    ▼
[4] Show file path and context
    Read surrounding code for context

Output Format

Definition Found

## Config (struct)

**Defined in:** `src/config.rs:15`

​```rust
#[derive(Debug, Clone)]
pub struct Config {
    pub name: String,
    pub port: u16,
    pub debug: bool,
}
​```

**Documentation:** Configuration for the application server.

References Found

## References to `Config` (5 found)

| Location | Context |
|----------|---------|
| src/main.rs:10 | `let config = Config::load()?;` |
| src/server.rs:25 | `fn new(config: Config) -> Self` |
| src/server.rs:42 | `self.config.port` |
| src/tests.rs:15 | `Config::default()` |
| src/cli.rs:8 | `config: Option<Config>` |

Common Patterns

User Says	LSP Operation
"Where is X defined?"	goToDefinition
"Who uses X?"	findReferences
"What type is X?"	hover
"Find all structs"	workspaceSymbol
"What's in this file?"	documentSymbol

Error Handling

Error	Cause	Solution
"No LSP server"	rust-analyzer not running	Suggest: rustup component add rust-analyzer
"Symbol not found"	Typo or not in scope	Search with workspaceSymbol first
"Multiple definitions"	Generics or macros	Show all and let user choose

Related Skills

When	See
Call relationships	rust-call-graph
Project structure	rust-symbol-analyzer
Trait implementations	rust-trait-explorer
Safe refactoring	rust-refactor-helper