SubgraphWalker (cpg 1.3.3 API)

java.lang.Object
- de.fraunhofer.aisec.cpg.helpers.SubgraphWalker

```
public class SubgraphWalker
extends java.lang.Object
```
Helper class for graph walking: Walking through ast-, cfg-, ...- edges

Nested Class Summary

Nested Classes
Modifier and Type	Class	Description
`static class`	`SubgraphWalker.Border`	For better readability: `result.entries` instead of `result.get(0)` when working with getEOGPathEdges.
`static class`	`SubgraphWalker.IterativeGraphWalker`
`static class`	`SubgraphWalker.ScopedWalker`	Handles declaration scope monitoring for iterative traversals.

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static java.util.List<Node>`	`flattenAST(Node n)`	Flattens the tree, starting at Node n into a list.
`static java.util.Set<Node>`	`getAstChildren(Node node)`	Calls handler function of all super-classes of the current node to get the AST children of the node.
`static SubgraphWalker.Border`	`getEOGPathEdges(Node n)`	Function returns two lists in a list.
`static void`	`visit(Node stmt, java.util.function.Consumer<Node> visitor)`	Visit all nodes.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Method Detail
  - getAstChildren
```
public static java.util.Set<Node> getAstChildren(Node node)
```
    Calls handler function of all super-classes of the current node to get the AST children of the node.
    
    Parameters:
    
    node - - Node to get the children from the AST tree structure
    
    Returns:
    
    a set of children from the nodes member variables
  - flattenAST
```
public static java.util.List<Node> flattenAST(Node n)
```
    Flattens the tree, starting at Node n into a list.
    
    Parameters:
    
    n - the node which contains the ast children to flatten
    
    Returns:
    
    the flattened nodes
  - getEOGPathEdges
```
public static SubgraphWalker.Border getEOGPathEdges(Node n)
```
    Function returns two lists in a list. The first list contains all eog nodes with no predecesor in the subgraph with root 'n'. The second list contains eog edges that have no successor in the subgraph with root 'n'. The first List marks the entry and the second marks the exit nodes of the cfg in this subgraph.
    
    Parameters:
    
    n - - root of the subgraph.
    
    Returns:
    
    Two lists, list 1 contains all eog entries and list 2 contains all exits.
  - visit
```
public static void visit(Node stmt,
                         java.util.function.Consumer<Node> visitor)
```
    Visit all nodes.
    
    Parameters:
    
    stmt - the start note
    
    visitor - the visitor consumer to call