Struct GraphBuilder 

pub struct GraphBuilder { /* private fields */ }

Graph 构建器。

Implementations

impl GraphBuilder

pub fn new(name: impl Into<String>) -> Self

pub fn start(&mut self, node: impl Into<String>) -> &mut Self

pub fn end(&mut self, node: impl Into<String>) -> &mut Self

pub fn node(&mut self, name: impl Into<String>, kind: NodeKind) -> &mut Self

pub fn edge( &mut self, from: impl Into<String>, to: impl Into<String>, ) -> PendingEdge<'_>

添加边（无条件普通边）。

返回 PendingEdge，可通过 .max_visits(n) 附加循环分析约束。

g.edge("a", "b");                    // 普通边
g.edge("b", "a").max_visits(5);      // 普通边 + 循环分析

pub fn edge_if( &mut self, from: impl Into<String>, to: impl Into<String>, condition: impl Fn(&State) -> bool + Send + Sync + 'static, ) -> PendingEdge<'_>

添加条件边（if/else-if 规则链）。

返回 PendingEdge，可通过 .max_visits(n) 附加循环分析约束。

g.edge_if("agent", "retry", |s| s.has_tool_calls()).max_visits(10);
g.edge_if("agent", "end", |_| true);

pub fn edge_fallback( &mut self, from: impl Into<String>, to: impl Into<String>, ) -> PendingEdge<'_>

添加 fallback 边（无条件兜底）。

返回 PendingEdge，可通过 .max_visits(n) 附加循环分析约束。

pub fn build(self) -> Result<Graph, BuildErrors>

构建 Graph。

收集所有错误后统一报告。Warning 变体不阻止 build 成功。

match builder.build() {
    Ok(graph) => { /* 使用 graph */ }
    Err(errors) => {
        for e in &errors.0 {
            eprintln!("{}", e);
        }
    }
}

pub fn name(&self) -> &str