Rust Symbol Analyzer

Analyze project structure by examining symbols across your Rust codebase.

Usage

/rust-symbol-analyzer [file.rs] [--type struct|trait|fn|mod]

Examples:

• /rust-symbol-analyzer - Analyze entire project
• /rust-symbol-analyzer src/lib.rs - Analyze single file
• /rust-symbol-analyzer --type trait - List all traits in project

LSP Operations

1. Document Symbols (Single File)

Get all symbols in a file with their hierarchy.

LSP(
  operation: "documentSymbol",
  filePath: "src/lib.rs",
  line: 1,
  character: 1
)

Returns: Nested structure of modules, structs, functions, etc.

2. Workspace Symbols (Entire Project)

Search for symbols across the workspace.

LSP(
  operation: "workspaceSymbol",
  filePath: "src/lib.rs",
  line: 1,
  character: 1
)

Note: Query is implicit in the operation context.

Workflow

User: "What's the structure of this project?"
    │
    ▼
[1] Find all Rust files
    Glob("**/*.rs")
    │
    ▼
[2] Get symbols from each key file
    LSP(documentSymbol) for lib.rs, main.rs
    │
    ▼
[3] Categorize by type
    │
    ▼
[4] Generate structure visualization

Output Format

Project Overview

## Project Structure: my-project

### Modules
├── src/
│   ├── lib.rs (root)
│   ├── config/
│   │   ├── mod.rs
│   │   └── parser.rs
│   ├── handlers/
│   │   ├── mod.rs
│   │   ├── auth.rs
│   │   └── api.rs
│   └── models/
│       ├── mod.rs
│       ├── user.rs
│       └── order.rs
└── tests/
    └── integration.rs

By Symbol Type

## Symbols by Type

### Structs (12)
| Name | Location | Fields | Derives |
|------|----------|--------|---------|
| Config | src/config.rs:10 | 5 | Debug, Clone |
| User | src/models/user.rs:8 | 4 | Debug, Serialize |
| Order | src/models/order.rs:15 | 6 | Debug, Serialize |
| ... | | | |

### Traits (4)
| Name | Location | Methods | Implementors |
|------|----------|---------|--------------|
| Handler | src/handlers/mod.rs:5 | 3 | AuthHandler, ApiHandler |
| Repository | src/db/mod.rs:12 | 5 | UserRepo, OrderRepo |
| ... | | | |

### Functions (25)
| Name | Location | Visibility | Async |
|------|----------|------------|-------|
| main | src/main.rs:10 | pub | yes |
| parse_config | src/config.rs:45 | pub | no |
| ... | | | |

### Enums (6)
| Name | Location | Variants |
|------|----------|----------|
| Error | src/error.rs:5 | 8 |
| Status | src/models/order.rs:5 | 4 |
| ... | | |

Single File Analysis

## src/handlers/auth.rs

### Symbols Hierarchy

mod auth
├── struct AuthHandler
│   ├── field: config: Config
│   ├── field: db: Pool
│   └── impl AuthHandler
│       ├── fn new(config, db) -> Self
│       ├── fn authenticate(&self, token) -> Result<User>
│       └── fn refresh_token(&self, user) -> Result<Token>
├── struct Token
│   ├── field: value: String
│   └── field: expires: DateTime
├── enum AuthError
│   ├── InvalidToken
│   ├── Expired
│   └── Unauthorized
└── impl Handler for AuthHandler
    ├── fn handle(&self, req) -> Response
    └── fn name(&self) -> &str

Analysis Features

Complexity Metrics

## Complexity Analysis

| File | Structs | Functions | Lines | Complexity |
|------|---------|-----------|-------|------------|
| src/handlers/auth.rs | 2 | 8 | 150 | Medium |
| src/models/user.rs | 3 | 12 | 200 | High |
| src/config.rs | 1 | 3 | 50 | Low |

**Hotspots:** Files with high complexity that may need refactoring
- src/handlers/api.rs (15 functions, 300 lines)

Dependency Analysis

## Internal Dependencies

auth.rs
├── imports from: config.rs, models/user.rs, db/mod.rs
└── imported by: main.rs, handlers/mod.rs

user.rs
├── imports from: (none - leaf module)
└── imported by: auth.rs, api.rs, tests/

Symbol Types

Type	Icon	LSP Kind
Module	📦	Module
Struct	🏗️	Struct
Enum	🔢	Enum
Trait	📜	Interface
Function	⚡	Function
Method	🔧	Method
Constant	🔒	Constant
Field	📎	Field

Common Queries

User Says	Analysis
"What structs are in this project?"	workspaceSymbol + filter
"Show me src/lib.rs structure"	documentSymbol
"Find all async functions"	workspaceSymbol + async filter
"List public API"	documentSymbol + pub filter

Related Skills

When	See
Navigate to symbol	rust-code-navigator
Call relationships	rust-call-graph
Trait implementations	rust-trait-explorer
Safe refactoring	rust-refactor-helper