Puma::CVisitor Class Reference

#include <Puma/CVisitor.h>

Inheritance diagram for Puma::CVisitor:

Description

Tree visitor implementation for CTree based syntax trees.

To be derived for visiting concrete syntax trees.

This class performs depth-first tree-traversal based on CTree tree structures. The traversal is started by calling CVisitor::visit() with the root node of the tree to traverse as its argument. For every node of the tree CVisitor::pre_visit() is called before its child nodes are visited, and CVisitor::post_visit() is called after its child nodes are visited. To perform actions on the visited nodes, CVisitor::pre_visit() and CVisitor::post_visit() have to be overloaded.

Public Member Functions
	CVisitor ()
	Constructor.
virtual	~CVisitor ()
	Destructor.
void	abort (bool v=true)
	Set the aborted state.
void	prune (bool v=true)
	Set the pruned state (don't visit the sub-tree).
bool	aborted () const
	Check if the node visiting is aborted.
bool	pruned () const
	Check if the visiting the sub-tree is aborted.
void	visit (CTree *node)
	Visit the given syntax tree node.
virtual void	pre_visit (CTree *node)
	Apply actions before the given node is visited.
virtual void	post_visit (CTree *node)
	Apply actions after the given node is visited.

Constructor & Destructor Documentation

CVisitor()

Puma::CVisitor::CVisitor ( )

inline

Constructor.

~CVisitor()

virtual Puma::CVisitor::~CVisitor ( )

inlinevirtual

Destructor.

Member Function Documentation

abort()

void Puma::CVisitor::abort ( bool v = true )

inline

Set the aborted state.

Parameters

v	True for aborted, false for not aborted.

aborted()

bool Puma::CVisitor::aborted ( ) const

inline

Check if the node visiting is aborted.

post_visit()

virtual void Puma::CVisitor::post_visit ( CTree * node )

virtual

Apply actions after the given node is visited.

To be implemented by derived visitors.

Parameters

node	The node to visit.

Reimplemented in Puma::CCSemVisitor, and Puma::CSemVisitor.

pre_visit()

virtual void Puma::CVisitor::pre_visit ( CTree * node )

virtual

Apply actions before the given node is visited.

To be implemented by derived visitors.

Parameters

node	The node to visit.

Reimplemented in Puma::CCSemVisitor, and Puma::CSemVisitor.

prune()

void Puma::CVisitor::prune ( bool v = true )

inline

Set the pruned state (don't visit the sub-tree).

Parameters

v	True for pruned, false for not pruned.

pruned()

bool Puma::CVisitor::pruned ( ) const

inline

Check if the visiting the sub-tree is aborted.

visit()

void Puma::CVisitor::visit

(

CTree *

node

)

Visit the given syntax tree node.

Parameters

node	The node to visit.