The generation of control flow graph is according to preorder traverse of the syntax tree .

控制流图的生成是通过对构件语法 树进行先序 遍历完成的。

Build and Traverse of Abstract Syntax Tree Based on Java Program

基于Java语言的抽象语法 树的创建与 遍历

The paper use depth-first search algorithm to recursively traverse every node of the DOM Tree to determine whether the node contains the information that we are interested in .

然后设计了一种深度优先的搜索算法去递归地 遍历 生成的DOM 树的每一结点，判断该节点是否包含我们感兴趣的信息。