Method _merge_new_functions

rust-core/src/codegraph/parser.rs:1003–1018

合并新解析的函数到现有图中

(&self, code_graph: &mut PetCodeGraph)

    /// 合并新解析的函数到现有图中
    fn _merge_new_functions(&self, code_graph: &mut PetCodeGraph) {
        for (_file_path, functions) in &self.file_functions {
            for function in functions {
                // 检查函数是否已存在（基于文件路径和行号）
                let exists = code_graph.graph.node_weights().any(|existing_func| {
                    existing_func.file_path == function.file_path &&
                    existing_func.line_start == function.line_start &&
                    existing_func.line_end == function.line_end
                });
                
                if !exists {
                    code_graph.add_function(function.clone());
                }
            }
        }
    }

    /// 分析调用关系 
    fn _analyze_call_relations(&self, code_graph: &mut CodeGraph) {