symgraph 2026.5.30

Semantic code intelligence library and MCP server - build knowledge graphs of codebases
Documentation 
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//! Handler for hierarchy tool

use crate::db::Database;
use crate::mcp::format;
use crate::mcp::types::SymbolRequest;

pub fn handle_hierarchy(db: &Database, req: &SymbolRequest) -> Result<String, String> {
    match db.get_hierarchy(&req.symbol) {
        Ok(nodes) => {
            if nodes.is_empty() {
                Ok(format!("No hierarchy found for symbol '{}'", req.symbol))
            } else {
                let mut output = format!("# Hierarchy for '{}'\n\n", req.symbol);
                output.push_str(&format!("Found {} related symbols:\n\n", nodes.len()));
                for node in nodes {
                    output.push_str(&format::format_node(&node));
                    output.push_str("\n\n");
                }
                Ok(output)
            }
        }
        Err(e) => Err(e.to_string()),
    }
}