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subdeclNode Class Reference

Indexed declaration. More...

#include <ast.h>

Inheritance diagram for subdeclNode::

List of all members.

Public Methods
	subdeclNode (declNode *orig, int index)
	Create a sub-declaration. More...
virtual	~subdeclNode ()
	Destroy a subdeclNode. More...
string	name_with_index ()
	Get the name with index. More...
virtual Node *	clone () const
	Clone the input node. More...
virtual void	output (output_context &ct, Node *par)
	Generate C code. More...
Accessors
Methods to get and set fields in the class.
virtual declNode *	original ()
	SSA original declaration. More...
int	index () const
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...
Private Attributes
REF declNode *	_original
int	_index

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Detailed Description

Indexed declaration.

Subclass of declNode used to create derived indexed declarations. It is currently only used in the SSA pass, which creates a series of indexed version of each variable. A subdeclNode consists of a base declaration and a subscript. For example, the indexed declaration for has the declaration for x as it base and has a subscript of 1. Sometimes, the subdeclNode's base is also refered to as its "original" declaration. The subdeclNode's subscript is also called its version or its index.

The NodeType is Decl.

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Constructor & Destructor Documentation

subdeclNode::subdeclNode (  declNode *    orig, int    index )

Create a sub-declaration. This constructor creates a new sub-declaration of the given input declaration. The index indicates which version (or subscript) to associate with the sub-declaration. Parameters: orig  the original declaration from which this subdeclaration is derived index  the index of the new sub-declaration

subdeclNode::~subdeclNode (    )  [virtual]

Destroy a subdeclNode. 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 * subdeclNode::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 declNode.

virtual Node* subdeclNode::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 declNode.

int subdeclNode::index (    )  const [inline]

string subdeclNode::name_with_index (    )

Get the name with index. This method returns the name of the declaration, with its index appended. For example, when this method is called on the subdeclaration for , the string "x@1" will be returned. Returns: the name with the index appended

virtual declNode* subdeclNode::original (    )  [inline, virtual]

SSA original declaration. For use with subdeclNode when the code is in SSA form. This method returns the original declaration from which the sub-declaration was derived. Returns: the original declaration Reimplemented from declNode.

void subdeclNode::output (  output_context &    ct, Node *    parent )  [virtual]

Generate C code. Each subclass overrides this method to define how to produce the output C code. To use this method, pass an output_context and a null parent. Parameters: ct  the output context which describes the formatting. par  the parent node (or null, if at the top of a subtree). Reimplemented from declNode.

void subdeclNode::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 declNode.

void subdeclNode::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 declNode.

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Member Data Documentation

int subdeclNode::_index [private]

REF declNode* subdeclNode::_original [private]

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

• ast.h
• subdeclnode.cc

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