Variable Class Reference

A Variable -- can be matched to other nodes. More...

#include <streevariable.h>

Inheritance diagram for Variable:

Public Member Functions
int	getId () const
	Returns the identifier of the variable.
	Variable (int iid)
	Creates Varable with given identifier.
	Variable (Constant *name)
	Creates Variable from constant by converting constant to int Constant::toInt.
	Variable (const string &name)
	Creates Variable from strnig by converting string to int.
virtual SType	getType () const
	Returns type of the node.
virtual string	getName () const
	Returs string representing node type or name for List.
virtual ostream &	print (ostream &os) const
	Writes node to the stream.
virtual ostream &	php (ostream &os) const
	Writes node to the stream as php.
virtual bool	match (const Node *p, Assignment &assign, const NameSpace &nameSpace) const
	Matches node p to the node. If node matches sets the assignment.
virtual bool	matchToBegining (const List *p, Assignment &assign, const NameSpace &nameSpace) const
	Matches the list to the begining of p.
virtual bool	compare (const Node *p) const
	Comares node p to the node.
virtual Node *	copy () const
	Copies the node.
virtual void	getVariables (VariableList &vlist) const
	Returns list of variables used in the node.
virtual string	evaluate (const NameSpace &nameSpace) const
	Computes the value of the expression (only basic atihmetic and string operations).
Protected Member Functions
virtual Node *	substitute (const Assignment &assign)
	Substitutes variables in the node accordingly to the given assignment.
Private Attributes
int	id
	Identifier of the variable.

---

Detailed Description

A Variable -- can be matched to other nodes.

Definition at line 11 of file streevariable.h.

---

Constructor & Destructor Documentation

Variable::Variable (  int  iid  )

Creates Varable with given identifier. Definition at line 4 of file streevariable.cpp. Referenced by copy().

Variable::Variable (  Constant *  name  )

Creates Variable from constant by converting constant to int Constant::toInt. Definition at line 6 of file streevariable.cpp.

Variable::Variable (  const string &  name  )

Creates Variable from strnig by converting string to int. Definition at line 10 of file streevariable.cpp. References id.

---

Member Function Documentation

bool Variable::compare (  const Node *  p  )  const [virtual]

Comares node p to the node. Implements Node. Definition at line 40 of file streevariable.cpp. References getId(), Node::getType(), and SVariable.

Node * Variable::copy (   )  const [virtual]

Copies the node. Implements Node. Definition at line 53 of file streevariable.cpp. References getId(), and Variable(). Referenced by MultiContextRule::copy(), and NamedContextRule::execute().

string Variable::evaluate (  const NameSpace &  nameSpace  )  const [virtual]

Computes the value of the expression (only basic atihmetic and string operations). Implements Node. Definition at line 61 of file streevariable.cpp.

int Variable::getId (   )  const [inline]

Returns the identifier of the variable. Definition at line 17 of file streevariable.h. References id. Referenced by compare(), copy(), NamedContextRule::execute(), MultiContextRule::generateSubcontext(), getVariables(), match(), matchToBegining(), and substitute().

virtual string Variable::getName (   )  const [inline, virtual]

Returs string representing node type or name for List. Implements Node. Definition at line 30 of file streevariable.h. References CVariable.

virtual SType Variable::getType (   )  const [inline, virtual]

Returns type of the node. Implements Node. Definition at line 28 of file streevariable.h. References SType, and SVariable.

void Variable::getVariables (  VariableList &  vlist  )  const [virtual]

Returns list of variables used in the node. Implements Node. Definition at line 57 of file streevariable.cpp. References getId().

bool Variable::match (  const Node *  p, Assignment &  assign, const NameSpace &  nameSpace )  const [virtual]

Matches node p to the node. If node matches sets the assignment. Implements Node. Definition at line 25 of file streevariable.cpp. References Node::copy(), and getId().

bool Variable::matchToBegining (  const List *  p, Assignment &  assign, const NameSpace &  nameSpace )  const [virtual]

Matches the list to the begining of p. Implements Node. Definition at line 33 of file streevariable.cpp. References List::copy(), and getId().

ostream & Variable::php (  ostream &  os  )  const [virtual]

Writes node to the stream as php. Implements Node. Definition at line 19 of file streevariable.cpp. References id.

ostream & Variable::print (  ostream &  os  )  const [virtual]

Writes node to the stream. Implements Node. Definition at line 15 of file streevariable.cpp. References id.

Node * Variable::substitute (  const Assignment &  assign  )  [protected, virtual]

Substitutes variables in the node accordingly to the given assignment. Implements Node. Definition at line 46 of file streevariable.cpp. References Node::copy(), and getId().

---

Field Documentation

int Variable::id [private]

Identifier of the variable. Definition at line 14 of file streevariable.h. Referenced by getId(), php(), print(), and Variable().

---

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

• streevariable.h
• streevariable.cpp

---