lean_ctx/tools/registered/
ctx_refactor.rs1use rmcp::model::Tool;
2use rmcp::ErrorData;
3use serde_json::{json, Map, Value};
4
5use crate::server::tool_trait::{get_str, McpTool, ToolContext, ToolOutput};
6use crate::tool_defs::tool_def;
7
8pub struct CtxRefactorTool;
9
10impl McpTool for CtxRefactorTool {
11 fn name(&self) -> &'static str {
12 "ctx_refactor"
13 }
14
15 fn tool_def(&self) -> Tool {
16 tool_def(
17 "ctx_refactor",
18 "LSP-powered refactoring. Actions: rename, references, definition, implementations. \
19 Requires a running language server (rust-analyzer, typescript-language-server, pylsp, gopls).",
20 json!({
21 "type": "object",
22 "properties": {
23 "action": {
24 "type": "string",
25 "enum": ["rename", "references", "definition", "implementations"],
26 "description": "Refactoring action"
27 },
28 "path": { "type": "string", "description": "File path" },
29 "line": { "type": "integer", "description": "1-indexed line number" },
30 "column": { "type": "integer", "description": "0-indexed character offset" },
31 "new_name": { "type": "string", "description": "New name (only for rename action)" }
32 },
33 "required": ["action", "path", "line"]
34 }),
35 )
36 }
37
38 fn handle(
39 &self,
40 args: &Map<String, Value>,
41 ctx: &ToolContext,
42 ) -> Result<ToolOutput, ErrorData> {
43 let args_value = Value::Object(args.clone());
44 let result = crate::tools::ctx_refactor::handle(&args_value, &ctx.project_root);
45
46 let action = get_str(args, "action").unwrap_or_default();
47 Ok(ToolOutput {
48 text: result,
49 original_tokens: 0,
50 saved_tokens: 0,
51 mode: Some(action),
52 path: get_str(args, "path"),
53 changed: false,
54 })
55 }
56}