use rmcp::ErrorData;
use rmcp::model::Tool;
use serde_json::{Map, Value, json};
use crate::server::tool_trait::{McpTool, ToolContext, ToolOutput, get_str};
use crate::tool_defs::tool_def;
pub struct CtxSymbolTool;
impl McpTool for CtxSymbolTool {
fn name(&self) -> &'static str {
"ctx_symbol"
}
fn tool_def(&self) -> Tool {
tool_def(
"ctx_symbol",
"[Deprecated → ctx_search action=\"symbol\"] Get one symbol's body by name (AST-precise);\n\
optional file/kind narrow. Hidden from tools/list but still callable for one release —\n\
prefer ctx_search.",
json!({
"type": "object",
"properties": {
"name": { "type": "string", "description": "fn|struct|class|method name" },
"file": { "type": "string", "description": "Narrow search to file" },
"kind": { "type": "string", "description": "fn|struct|class|trait|enum" }
},
"required": ["name"]
}),
)
}
fn handle(
&self,
args: &Map<String, Value>,
ctx: &ToolContext,
) -> Result<ToolOutput, ErrorData> {
let sym_name = get_str(args, "name")
.ok_or_else(|| ErrorData::invalid_params("name is required", None))?;
let file = get_str(args, "file");
let kind = get_str(args, "kind");
let (result, original) = crate::tools::ctx_symbol::handle(
&sym_name,
file.as_deref(),
kind.as_deref(),
&ctx.project_root,
);
let sent = crate::core::tokens::count_tokens(&result);
let saved = original.saturating_sub(sent);
Ok(ToolOutput {
text: result,
original_tokens: original,
saved_tokens: saved,
mode: kind,
path: file,
changed: false,
shell_outcome: None,
content_blocks: None,
})
}
}