rs_adk/text/
fn_agent.rs

1use async_trait::async_trait;
2
3use super::TextAgent;
4use crate::error::AgentError;
5use crate::state::State;
6
7/// Zero-cost state transform agent — executes a closure, no LLM call.
8pub struct FnTextAgent {
9    name: String,
10    #[allow(clippy::type_complexity)]
11    func: Box<dyn Fn(&State) -> Result<String, AgentError> + Send + Sync>,
12}
13
14impl FnTextAgent {
15    /// Create a new function agent.
16    pub fn new(
17        name: impl Into<String>,
18        f: impl Fn(&State) -> Result<String, AgentError> + Send + Sync + 'static,
19    ) -> Self {
20        Self {
21            name: name.into(),
22            func: Box::new(f),
23        }
24    }
25}
26
27#[async_trait]
28impl TextAgent for FnTextAgent {
29    fn name(&self) -> &str {
30        &self.name
31    }
32
33    async fn run(&self, state: &State) -> Result<String, AgentError> {
34        (self.func)(state)
35    }
36}
rs_adk/text/fn_agent.rs

rs_adk/text/
fn_agent.rs
