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unionNode Class Reference

Union type node. More...

#include <ast.h>

Inheritance diagram for unionNode::

List of all members.

Public Methods
	unionNode (const Coord coord=Coord::Unknown)
	Create new union type. More...
virtual	~unionNode ()
	Destroy a unionNode. More...
virtual Node *	clone () const
	Clone the input node. More...
AST Traversal
Methods to uniformly traverse the AST. See the documentation in the Node class.
virtual void	visit (Visitor *the_visitor)
	Dispatch a Visitor. More...
virtual void	walk (Walker &the_walker)
	Dispatch a Walker. More...
virtual Node *	change (Changer &the_changer, bool redispatch=false)
	Dispatch a Changer. More...

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Detailed Description

Union type node.

This class represents union types. Note that it does not represent the definition of the unions, but just an instant of the type. For example, in the declaration "union A * x;" the AST built would look like this: declNode "x" --> ptrNode --> unionNode. The actual definition resides in an suespecNode.

The NodeType is Union.

See also:

sueNode , suespecNode

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Constructor & Destructor Documentation

unionNode::unionNode (  const Coord    coord = Coord::Unknown )

Create new union type. The new union type has no tag and doesn't refer to any definition. Use the sueNode::spec() methods to get and set the reference to the definition, which also contains the name. Parameters: coord  the location of the construct in the source file.

unionNode::~unionNode (    )  [virtual]

Destroy a unionNode. Warning: Do not use the destructors to delete AST nodes. Instead, rely on the node garbage collector.

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Member Function Documentation

Node * unionNode::change (  Changer &    the_changer, bool    redispatch = false )  [virtual]

Dispatch a Changer. This abstract method works much the walker, but allows the tree to be changed. Parameters: the_changer  the specific Changer object to use. redispatch  pass true to revisit parts of the tree that have changed. Reimplemented from Node.

virtual Node* unionNode::clone (    )  const [inline, virtual]

Clone the input node. This is not a "deep" clone, so be careful. For a deep clone, use the clone_changer class. Returns: a shallow copy of the node (no subtrees are copied). Reimplemented from Node.

void unionNode::visit (  Visitor *    the_visitor )  [virtual]

Dispatch a Visitor. This abstract method is the entry point for the visitor design pattern. Each node subclass defines a visit() method that calls the appropriate at_ method in the visitor. For more information see the Visitor documentation. Parameters: the_visitor  the specific Visitor object to use. Reimplemented from Node.

void unionNode::walk (  Walker &    the_walker )  [virtual]

Dispatch a Walker. This abstract method works much like the visitor, but instead walks the entire underlying subtree calling the appropriate at_ method at each node. For more information see the Walker documentation. Parameters: the_walker  the specific Walker object to use. Reimplemented from Node.

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The documentation for this class was generated from the following files:

• ast.h
• unionnode.cc

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