AstVisitor (SonarSource :: Cobol :: Javadoc 5.0.0.5433 API)

All Known Subinterfaces:

AstAndTokenVisitor

All Known Implementing Classes:

CobolAstVisitor, CobolCheck
```
public interface AstVisitor
```

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`List<AstNodeType>`	`getAstNodeTypesToVisit()`	The AST node types that this check must be registered for.
`void`	`leaveFile(AstNode ast)`	Called once a computation unit tree has been fully visited.
`void`	`leaveNode(AstNode ast)`	Called once an AST node has been fully visited.
`void`	`visitFile(AstNode ast)`	Called before starting visiting a computation unit tree.
`void`	`visitNode(AstNode ast)`	Called to process an AST node whose type has been registered to be visited.

- Method Detail
  - getAstNodeTypesToVisit
```
List<AstNodeType> getAstNodeTypesToVisit()
```
    The AST node types that this check must be registered for.
    
    Returns:
    
    the AST node types this must be registered for.
  - visitFile
```
void visitFile(@Nullable
               AstNode ast)
```
    Called before starting visiting a computation unit tree. Ideal place to initialize information that is to be collected while processing the tree.
    
    Parameters:
    
    ast - the root of the tree, or null if no tree
  - leaveFile
```
void leaveFile(@Nullable
               AstNode ast)
```
    Called once a computation unit tree has been fully visited. Ideal place to report on information collected while processing a tree.
    
    Parameters:
    
    ast - the root of the tree, or null if no tree
  - visitNode
```
void visitNode(AstNode ast)
```
    Called to process an AST node whose type has been registered to be visited.
    
    Parameters:
    
    ast - the AST node to process
  - leaveNode
```
void leaveNode(AstNode ast)
```
    Called once an AST node has been fully visited.
    
    Parameters:
    
    ast - the AST node which has been visited