NEDElement Class Reference
[Data classes]

Base class for objects in a NED object tree, the XML-based in-memory representation for NED files. More...

#include <nedelement.h>

Inheritance diagram for NEDElement:

List of all members.

Public Member Functions
Constructor, destructor
	NEDElement ()
	NEDElement (NEDElement *parent)
virtual	~NEDElement ()
virtual NEDElement *	dup () const =0
virtual NEDElement *	dupTree () const
Common properties
virtual const char *	getTagName () const =0
virtual int	getTagCode () const =0
virtual long	getId () const
virtual void	setId (long id)
virtual const char *	getSourceLocation () const
virtual void	setSourceLocation (const char *loc)
virtual const NEDSourceRegion &	getSourceRegion () const
virtual void	setSourceRegion (const NEDSourceRegion &region)
Generic access to attributes (Methods have to be redefined in subclasses!)
virtual void	applyDefaults ()
virtual int	getNumAttributes () const =0
virtual const char *	getAttributeName (int k) const =0
virtual int	lookupAttribute (const char *attr) const
virtual const char *	getAttribute (int k) const =0
virtual const char *	getAttribute (const char *attr) const
virtual void	setAttribute (int k, const char *value)=0
virtual void	setAttribute (const char *attr, const char *value)
virtual const char *	getAttributeDefault (int k) const =0
virtual const char *	getAttributeDefault (const char *attr) const
Generic access to children and siblings
virtual NEDElement *	getParent () const
virtual NEDElement *	getFirstChild () const
virtual NEDElement *	getLastChild () const
virtual NEDElement *	getNextSibling () const
virtual NEDElement *	getPrevSibling () const
virtual void	appendChild (NEDElement *node)
virtual void	insertChildBefore (NEDElement *where, NEDElement *newnode)
virtual NEDElement *	removeChild (NEDElement *node)
virtual NEDElement *	getFirstChildWithTag (int tagcode) const
virtual NEDElement *	getNextSiblingWithTag (int tagcode) const
virtual int	getNumChildren () const
virtual int	getNumChildrenWithTag (int tagcode) const
Utility functions
NEDElement *	getFirstChildWithAttribute (int tagcode, const char *attr, const char *attrvalue=NULL)
NEDElement *	getParentWithTag (int tagcode)
User data
virtual void	setUserData (NEDElementUserData *data)
virtual NEDElementUserData *	getUserData () const
Static Public Member Functions
Counters
static long	getNumCreated ()
static long	getNumExisting ()
Static Protected Member Functions
static bool	stringToBool (const char *s)
static const char *	boolToString (bool b)
static int	stringToEnum (const char *s, const char *vals[], int nums[], int n)
static const char *	enumToString (int b, const char *vals[], int nums[], int n)
static void	validateEnum (int b, const char *vals[], int nums[], int n)

---

Detailed Description

Base class for objects in a NED object tree, the XML-based in-memory representation for NED files.

An instance of a NEDElement subclass represent an XML element. NEDElement provides a DOM-like, generic access to the tree; subclasses additionally provide a typed interface.

---

Constructor & Destructor Documentation

NEDElement::NEDElement

(

)

Constructor.

NEDElement::NEDElement

(

NEDElement *

parent

)

Constructor.

Takes parent element.

virtual NEDElement::~NEDElement

(

)

[virtual]

Destructor.

Destroys children too.

---

Member Function Documentation

virtual void NEDElement::appendChild

(

NEDElement *

node

)

[virtual]

Appends the given element at the end of the child element list.

The node pointer passed should not be NULL.

virtual void NEDElement::applyDefaults

(

)

[virtual]

Sets every attribute to its default value (as returned by getAttributeDefault()).

Attributes without a default value are not affected.

This method is called from the constructors of derived classes.

static const char* NEDElement::boolToString

(

bool

b

)

[static, protected]

virtual NEDElement* NEDElement::dup

(

)

const [pure virtual]

Creates and returns a duplicate of the element.

Child elements are not copied.

Implemented in FilesElement, NedFileElement, CommentElement, PackageElement, ImportElement, PropertyDeclElement, ExtendsElement, InterfaceNameElement, SimpleModuleElement, ModuleInterfaceElement, CompoundModuleElement, ChannelInterfaceElement, ChannelElement, ParametersElement, ParamElement, PropertyElement, PropertyKeyElement, GatesElement, GateElement, TypesElement, SubmodulesElement, SubmoduleElement, ConnectionsElement, ConnectionElement, ConnectionGroupElement, LoopElement, ConditionElement, ExpressionElement, OperatorElement, FunctionElement, IdentElement, LiteralElement, MsgFileElement, NamespaceElement, CplusplusElement, StructDeclElement, ClassDeclElement, MessageDeclElement, PacketDeclElement, EnumDeclElement, EnumElement, EnumFieldsElement, EnumFieldElement, MessageElement, PacketElement, ClassElement, StructElement, FieldElement, and UnknownElement.

virtual NEDElement* NEDElement::dupTree

(

)

const [virtual]

Recursive version of dup(): duplicates the whole subtree.

static const char* NEDElement::enumToString	(	int	b,
		const char *	vals[],
		int	nums[],
		int	n
	)			[static, protected]

virtual const char* NEDElement::getAttribute

(

const char *

attr

)

const [virtual]

Returns the value of the attribute with the given name.

Relies on lookupAttribute() and getAttribute().

It returns NULL if the given attribute is not found.

Reimplemented in FilesElement, NedFileElement, CommentElement, PackageElement, ImportElement, PropertyDeclElement, ExtendsElement, InterfaceNameElement, SimpleModuleElement, ModuleInterfaceElement, CompoundModuleElement, ChannelInterfaceElement, ChannelElement, ParametersElement, ParamElement, PropertyElement, PropertyKeyElement, GatesElement, GateElement, TypesElement, SubmodulesElement, SubmoduleElement, ConnectionsElement, ConnectionElement, ConnectionGroupElement, LoopElement, ConditionElement, ExpressionElement, OperatorElement, FunctionElement, IdentElement, LiteralElement, MsgFileElement, NamespaceElement, CplusplusElement, StructDeclElement, ClassDeclElement, MessageDeclElement, PacketDeclElement, EnumDeclElement, EnumElement, EnumFieldsElement, EnumFieldElement, MessageElement, PacketElement, ClassElement, StructElement, FieldElement, and UnknownElement.

virtual const char* NEDElement::getAttribute

(

int

k

)

const [pure virtual]

Pure virtual method, it should be redefined in subclasses to return the value of the kth attribute (i.e.

the attribute with the name getAttributeName(k)).

It should return NULL if k is out of range (i.e. negative or greater than getNumAttributes()).

Implemented in FilesElement, NedFileElement, CommentElement, PackageElement, ImportElement, PropertyDeclElement, ExtendsElement, InterfaceNameElement, SimpleModuleElement, ModuleInterfaceElement, CompoundModuleElement, ChannelInterfaceElement, ChannelElement, ParametersElement, ParamElement, PropertyElement, PropertyKeyElement, GatesElement, GateElement, TypesElement, SubmodulesElement, SubmoduleElement, ConnectionsElement, ConnectionElement, ConnectionGroupElement, LoopElement, ConditionElement, ExpressionElement, OperatorElement, FunctionElement, IdentElement, LiteralElement, MsgFileElement, NamespaceElement, CplusplusElement, StructDeclElement, ClassDeclElement, MessageDeclElement, PacketDeclElement, EnumDeclElement, EnumElement, EnumFieldsElement, EnumFieldElement, MessageElement, PacketElement, ClassElement, StructElement, FieldElement, and UnknownElement.

Referenced by UnknownElement::getAttribute(), FieldElement::getAttribute(), StructElement::getAttribute(), ClassElement::getAttribute(), PacketElement::getAttribute(), MessageElement::getAttribute(), EnumFieldElement::getAttribute(), EnumFieldsElement::getAttribute(), EnumElement::getAttribute(), EnumDeclElement::getAttribute(), PacketDeclElement::getAttribute(), MessageDeclElement::getAttribute(), ClassDeclElement::getAttribute(), StructDeclElement::getAttribute(), CplusplusElement::getAttribute(), NamespaceElement::getAttribute(), MsgFileElement::getAttribute(), LiteralElement::getAttribute(), IdentElement::getAttribute(), FunctionElement::getAttribute(), OperatorElement::getAttribute(), ExpressionElement::getAttribute(), ConditionElement::getAttribute(), LoopElement::getAttribute(), ConnectionGroupElement::getAttribute(), ConnectionElement::getAttribute(), ConnectionsElement::getAttribute(), SubmoduleElement::getAttribute(), SubmodulesElement::getAttribute(), TypesElement::getAttribute(), GateElement::getAttribute(), GatesElement::getAttribute(), PropertyKeyElement::getAttribute(), PropertyElement::getAttribute(), ParamElement::getAttribute(), ParametersElement::getAttribute(), ChannelElement::getAttribute(), ChannelInterfaceElement::getAttribute(), CompoundModuleElement::getAttribute(), ModuleInterfaceElement::getAttribute(), SimpleModuleElement::getAttribute(), InterfaceNameElement::getAttribute(), ExtendsElement::getAttribute(), PropertyDeclElement::getAttribute(), ImportElement::getAttribute(), PackageElement::getAttribute(), CommentElement::getAttribute(), NedFileElement::getAttribute(), and FilesElement::getAttribute().

virtual const char* NEDElement::getAttributeDefault

(

const char *

attr

)

const [virtual]

Returns the default value of the given attribute, as defined in the DTD.

Relies on lookupAttribute() and getAttributeDefault().

It returns NULL if the given attribute is not found.

virtual const char* NEDElement::getAttributeDefault

(

int

k

)

const [pure virtual]

Pure virtual method, it should be redefined in subclasses to return the default value of the kth attribute, as defined in the DTD.

It should return NULL if k is out of range (i.e. negative or greater than getNumAttributes()), or if the attribute is #REQUIRED; and return "" if the attribute is #IMPLIED.

Implemented in FilesElement, NedFileElement, CommentElement, PackageElement, ImportElement, PropertyDeclElement, ExtendsElement, InterfaceNameElement, SimpleModuleElement, ModuleInterfaceElement, CompoundModuleElement, ChannelInterfaceElement, ChannelElement, ParametersElement, ParamElement, PropertyElement, PropertyKeyElement, GatesElement, GateElement, TypesElement, SubmodulesElement, SubmoduleElement, ConnectionsElement, ConnectionElement, ConnectionGroupElement, LoopElement, ConditionElement, ExpressionElement, OperatorElement, FunctionElement, IdentElement, LiteralElement, MsgFileElement, NamespaceElement, CplusplusElement, StructDeclElement, ClassDeclElement, MessageDeclElement, PacketDeclElement, EnumDeclElement, EnumElement, EnumFieldsElement, EnumFieldElement, MessageElement, PacketElement, ClassElement, StructElement, FieldElement, and UnknownElement.

virtual const char* NEDElement::getAttributeName

(

int

k

)

const [pure virtual]

Pure virtual method, it should be redefined in subclasses to return the name of the kth attribute as defined in the DTD.

It should return NULL if k is out of range (i.e. negative or greater than getNumAttributes()).

Implemented in FilesElement, NedFileElement, CommentElement, PackageElement, ImportElement, PropertyDeclElement, ExtendsElement, InterfaceNameElement, SimpleModuleElement, ModuleInterfaceElement, CompoundModuleElement, ChannelInterfaceElement, ChannelElement, ParametersElement, ParamElement, PropertyElement, PropertyKeyElement, GatesElement, GateElement, TypesElement, SubmodulesElement, SubmoduleElement, ConnectionsElement, ConnectionElement, ConnectionGroupElement, LoopElement, ConditionElement, ExpressionElement, OperatorElement, FunctionElement, IdentElement, LiteralElement, MsgFileElement, NamespaceElement, CplusplusElement, StructDeclElement, ClassDeclElement, MessageDeclElement, PacketDeclElement, EnumDeclElement, EnumElement, EnumFieldsElement, EnumFieldElement, MessageElement, PacketElement, ClassElement, StructElement, FieldElement, and UnknownElement.

virtual NEDElement* NEDElement::getFirstChild

(

)

const [virtual]

Returns pointer to the first child element, or NULL if this element has no children.

NEDElement* NEDElement::getFirstChildWithAttribute	(	int	tagcode,
		const char *	attr,
		const char *	attrvalue = NULL
	)

Returns first child element with the given tagcode and the given attribute (optionally) having the given value.

Returns NULL if not found.

virtual NEDElement* NEDElement::getFirstChildWithTag

(

int

tagcode

)

const [virtual]

Returns pointer to the first child element with the given tag code, or NULL if this element has no such children.

virtual long NEDElement::getId

(

)

const [virtual]

Returns a unique id, originally set by the constructor.

virtual NEDElement* NEDElement::getLastChild

(

)

const [virtual]

Returns pointer to the last child element, or NULL if this element has no children.

virtual NEDElement* NEDElement::getNextSibling

(

)

const [virtual]

Returns pointer to the next sibling of this element (i.e.

the next child in the parent element). Returns NULL if there're no subsequent elements.

getFirstChild() and getNextSibling() can be used to loop through the child list:

 for (NEDElement *child=node->getFirstChild(); child; child = child->getNextSibling())
 {
    ...
 }
 

virtual NEDElement* NEDElement::getNextSiblingWithTag

(

int

tagcode

)

const [virtual]

Returns pointer to the next sibling of this element with the given tag code.

Return NULL if there're no such subsequent elements.

getFirstChildWithTag() and getNextSiblingWithTag() are a convient way to loop through elements with a certain tag code in the child list:

 for (NEDElement *child=node->getFirstChildWithTag(tagcode); child; child = child->getNextSiblingWithTag(tagcode))
 {
     ...
 }
 

virtual int NEDElement::getNumAttributes

(

)

const [pure virtual]

Pure virtual method, it should be redefined in subclasses to return the number of attributes defined in the DTD.

Implemented in FilesElement, NedFileElement, CommentElement, PackageElement, ImportElement, PropertyDeclElement, ExtendsElement, InterfaceNameElement, SimpleModuleElement, ModuleInterfaceElement, CompoundModuleElement, ChannelInterfaceElement, ChannelElement, ParametersElement, ParamElement, PropertyElement, PropertyKeyElement, GatesElement, GateElement, TypesElement, SubmodulesElement, SubmoduleElement, ConnectionsElement, ConnectionElement, ConnectionGroupElement, LoopElement, ConditionElement, ExpressionElement, OperatorElement, FunctionElement, IdentElement, LiteralElement, MsgFileElement, NamespaceElement, CplusplusElement, StructDeclElement, ClassDeclElement, MessageDeclElement, PacketDeclElement, EnumDeclElement, EnumElement, EnumFieldsElement, EnumFieldElement, MessageElement, PacketElement, ClassElement, StructElement, FieldElement, and UnknownElement.

virtual int NEDElement::getNumChildren

(

)

const [virtual]

Returns the number of child elements.

virtual int NEDElement::getNumChildrenWithTag

(

int

tagcode

)

const [virtual]

Returns the number of child elements with the given tag code.

static long NEDElement::getNumCreated

(

)

[inline, static]

Returns NEDElements constructed so far (this number can only increase).

static long NEDElement::getNumExisting

(

)

[inline, static]

Returns NEDElements currently existing (created minus deleted).

Useful for detecting memory leaks.

virtual NEDElement* NEDElement::getParent

(

)

const [virtual]

Returns the parent element, or NULL if this element has no parent.

NEDElement* NEDElement::getParentWithTag

(

int

tagcode

)

Climb up in the element tree until it finds an element with the given tagcode.

Returns "this" if its tagcode already matches. Returns NULL if not found.

virtual NEDElement* NEDElement::getPrevSibling

(

)

const [virtual]

Returns pointer to the previous sibling of this element (i.e.

the previous child in the parent element). Returns NULL if there're no elements before this one.

virtual const char* NEDElement::getSourceLocation

(

)

const [virtual]

Returns a string containing a file/line position showing where this element originally came from.

virtual const NEDSourceRegion& NEDElement::getSourceRegion

(

)

const [virtual]

Returns the source region, containing a line:col region in the source file that corresponds to this element.

virtual int NEDElement::getTagCode

(

)

const [pure virtual]

Overridden in subclasses to return the numeric code (NED_xxx) of the XML element the class represents.

Implemented in FilesElement, NedFileElement, CommentElement, PackageElement, ImportElement, PropertyDeclElement, ExtendsElement, InterfaceNameElement, SimpleModuleElement, ModuleInterfaceElement, CompoundModuleElement, ChannelInterfaceElement, ChannelElement, ParametersElement, ParamElement, PropertyElement, PropertyKeyElement, GatesElement, GateElement, TypesElement, SubmodulesElement, SubmoduleElement, ConnectionsElement, ConnectionElement, ConnectionGroupElement, LoopElement, ConditionElement, ExpressionElement, OperatorElement, FunctionElement, IdentElement, LiteralElement, MsgFileElement, NamespaceElement, CplusplusElement, StructDeclElement, ClassDeclElement, MessageDeclElement, PacketDeclElement, EnumDeclElement, EnumElement, EnumFieldsElement, EnumFieldElement, MessageElement, PacketElement, ClassElement, StructElement, FieldElement, and UnknownElement.

virtual const char* NEDElement::getTagName

(

)

const [pure virtual]

Overridden in subclasses to return the name of the XML element the class represents.

Implemented in FilesElement, NedFileElement, CommentElement, PackageElement, ImportElement, PropertyDeclElement, ExtendsElement, InterfaceNameElement, SimpleModuleElement, ModuleInterfaceElement, CompoundModuleElement, ChannelInterfaceElement, ChannelElement, ParametersElement, ParamElement, PropertyElement, PropertyKeyElement, GatesElement, GateElement, TypesElement, SubmodulesElement, SubmoduleElement, ConnectionsElement, ConnectionElement, ConnectionGroupElement, LoopElement, ConditionElement, ExpressionElement, OperatorElement, FunctionElement, IdentElement, LiteralElement, MsgFileElement, NamespaceElement, CplusplusElement, StructDeclElement, ClassDeclElement, MessageDeclElement, PacketDeclElement, EnumDeclElement, EnumElement, EnumFieldsElement, EnumFieldElement, MessageElement, PacketElement, ClassElement, StructElement, FieldElement, and UnknownElement.

virtual NEDElementUserData* NEDElement::getUserData

(

)

const [virtual]

Return pointer to the user data object, or NULL if setUserData() has not been called yet.

virtual void NEDElement::insertChildBefore	(	NEDElement *	where,
		NEDElement *	newnode
	)			[virtual]

Inserts the given element just before the specified child element in the child element list, or at the end of the child list if NULL is specified as the insert position.

The where element must be a child of this element, or NULL. The node pointer passed should not be NULL.

virtual int NEDElement::lookupAttribute

(

const char *

attr

)

const [virtual]

Returns the index of the given attribute.

It returns -1 if the attribute is not found. Relies on getNumAttributes() and getAttributeName().

virtual NEDElement* NEDElement::removeChild

(

NEDElement *

node

)

[virtual]

Removes the given element from the child element list.

The pointer passed should be a child of this element.

virtual void NEDElement::setAttribute	(	const char *	attr,
		const char *	value
	)			[virtual]

Sets the value of the attribute with the given name.

Relies on lookupAttribute() and setAttribute().

If the given attribute is not found, the call has no effect.

Reimplemented in FilesElement, NedFileElement, CommentElement, PackageElement, ImportElement, PropertyDeclElement, ExtendsElement, InterfaceNameElement, SimpleModuleElement, ModuleInterfaceElement, CompoundModuleElement, ChannelInterfaceElement, ChannelElement, ParametersElement, ParamElement, PropertyElement, PropertyKeyElement, GatesElement, GateElement, TypesElement, SubmodulesElement, SubmoduleElement, ConnectionsElement, ConnectionElement, ConnectionGroupElement, LoopElement, ConditionElement, ExpressionElement, OperatorElement, FunctionElement, IdentElement, LiteralElement, MsgFileElement, NamespaceElement, CplusplusElement, StructDeclElement, ClassDeclElement, MessageDeclElement, PacketDeclElement, EnumDeclElement, EnumElement, EnumFieldsElement, EnumFieldElement, MessageElement, PacketElement, ClassElement, StructElement, FieldElement, and UnknownElement.

virtual void NEDElement::setAttribute	(	int	k,
		const char *	value
	)			[pure virtual]

Pure virtual method, it should be redefined in subclasses to set the value of the kth attribute (i.e.

the attribute with the name getAttributeName(k)).

If k is out of range (i.e. negative or greater than getNumAttributes()), the call should be ignored.

Implemented in FilesElement, NedFileElement, CommentElement, PackageElement, ImportElement, PropertyDeclElement, ExtendsElement, InterfaceNameElement, SimpleModuleElement, ModuleInterfaceElement, CompoundModuleElement, ChannelInterfaceElement, ChannelElement, ParametersElement, ParamElement, PropertyElement, PropertyKeyElement, GatesElement, GateElement, TypesElement, SubmodulesElement, SubmoduleElement, ConnectionsElement, ConnectionElement, ConnectionGroupElement, LoopElement, ConditionElement, ExpressionElement, OperatorElement, FunctionElement, IdentElement, LiteralElement, MsgFileElement, NamespaceElement, CplusplusElement, StructDeclElement, ClassDeclElement, MessageDeclElement, PacketDeclElement, EnumDeclElement, EnumElement, EnumFieldsElement, EnumFieldElement, MessageElement, PacketElement, ClassElement, StructElement, FieldElement, and UnknownElement.

Referenced by UnknownElement::setAttribute(), FieldElement::setAttribute(), StructElement::setAttribute(), ClassElement::setAttribute(), PacketElement::setAttribute(), MessageElement::setAttribute(), EnumFieldElement::setAttribute(), EnumFieldsElement::setAttribute(), EnumElement::setAttribute(), EnumDeclElement::setAttribute(), PacketDeclElement::setAttribute(), MessageDeclElement::setAttribute(), ClassDeclElement::setAttribute(), StructDeclElement::setAttribute(), CplusplusElement::setAttribute(), NamespaceElement::setAttribute(), MsgFileElement::setAttribute(), LiteralElement::setAttribute(), IdentElement::setAttribute(), FunctionElement::setAttribute(), OperatorElement::setAttribute(), ExpressionElement::setAttribute(), ConditionElement::setAttribute(), LoopElement::setAttribute(), ConnectionGroupElement::setAttribute(), ConnectionElement::setAttribute(), ConnectionsElement::setAttribute(), SubmoduleElement::setAttribute(), SubmodulesElement::setAttribute(), TypesElement::setAttribute(), GateElement::setAttribute(), GatesElement::setAttribute(), PropertyKeyElement::setAttribute(), PropertyElement::setAttribute(), ParamElement::setAttribute(), ParametersElement::setAttribute(), ChannelElement::setAttribute(), ChannelInterfaceElement::setAttribute(), CompoundModuleElement::setAttribute(), ModuleInterfaceElement::setAttribute(), SimpleModuleElement::setAttribute(), InterfaceNameElement::setAttribute(), ExtendsElement::setAttribute(), PropertyDeclElement::setAttribute(), ImportElement::setAttribute(), PackageElement::setAttribute(), CommentElement::setAttribute(), NedFileElement::setAttribute(), and FilesElement::setAttribute().

virtual void NEDElement::setId

(

long

id

)

[virtual]

The unique id assigned by the constructor can be overwritten here.

virtual void NEDElement::setSourceLocation

(

const char *

loc

)

[virtual]

Sets location string (a string containing a file/line position showing where this element originally came from).

Called by the (NED/XML) parser.

virtual void NEDElement::setSourceRegion

(

const NEDSourceRegion &

region

)

[virtual]

Sets source region, containing a line:col region in the source file that corresponds to this element.

Called by the (NED/XML) parser.

virtual void NEDElement::setUserData

(

NEDElementUserData *

data

)

[virtual]

Replaces user data object with the given one.

static bool NEDElement::stringToBool

(

const char *

s

)

[static, protected]

static int NEDElement::stringToEnum	(	const char *	s,
		const char *	vals[],
		int	nums[],
		int	n
	)			[static, protected]

static void NEDElement::validateEnum	(	int	b,
		const char *	vals[],
		int	nums[],
		int	n
	)			[static, protected]

---

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

• nedelement.h