TypeStruct Class Reference

A composite Datatype object: A "structure" with component "fields". More...

#include <type.hh>

Inheritance diagram for TypeStruct:

Public Member Functions
	TypeStruct (const TypeStruct &op)
	Construct from another TypeStruct.
const TypeField *	getField (int4 off, int4 sz, int4 *newoff) const
	Get field based on offset. More...
virtual Datatype *	getSubType (uintb off, uintb *newoff) const
	Recover component data-type one-level down. More...
virtual int4	numDepend (void) const
virtual Datatype *	getDepend (int4 index) const
virtual int4	compare (const Datatype &op, int4 level) const
	Compare for functional equivalence. More...
virtual int4	compareDependency (const Datatype &op) const
	Compare for storage in tree structure. More...
virtual Datatype *	clone (void) const
	Clone the data-type.
virtual void	saveXml (ostream &s) const
	Serialize the data-type to XML. More...
Public Member Functions inherited from Datatype
	Datatype (const Datatype &op)
	Construct the base data-type copying low-level properties of another.
	Datatype (int4 s, type_metatype m)
	Construct the base data-type providing size and meta-type.
	Datatype (int4 s, type_metatype m, const string &n)
	Construct the base data-type providing size, meta-type, and name.
virtual void	printRaw (ostream &s) const
	Print a description of the type to stream. More...
int4	typeOrderBool (const Datatype &op) const
	Order this with -op-, treating bool data-type as special. More...
void	saveXmlBasic (ostream &s) const
	Save basic data-type properties. More...
void	saveXmlRef (ostream &s) const
	Write an XML reference of this to stream. More...

Protected Member Functions
void	setFields (const vector< TypeField > &fd)
	Establish fields for this. More...
int4	getFieldIter (int4 off) const
	Get index into field list. More...
virtual void	restoreXml (const Element *el, TypeFactory &typegrp)
	Restore data-type from XML. More...
Protected Member Functions inherited from Datatype
void	restoreXmlBasic (const Element *el)
	Recover basic data-type properties. More...

Protected Attributes
vector< TypeField >	field
	The list of fields.
Protected Attributes inherited from Datatype
int4	size
	Size (of variable holding a value of this type)
string	name
	Name of type.
type_metatype	metatype
	Meta-type - type disregarding size.
uint4	flags
	Boolean properties of the type.
uint8	id
	A unique id for the type (or 0 if an id is not assigned)

Friends
class	TypeFactory

Additional Inherited Members
Protected Types inherited from Datatype
enum	{   coretype = 1, chartype = 2, enumtype = 4, poweroftwo = 8,   utf16 = 16, utf32 = 32 }
	Boolean properties of datatypes. More...
Static Protected Member Functions inherited from Datatype
static uint8	hashName (const string &nm)
	Produce a data-type id by hashing the type name. More...

Detailed Description

A composite Datatype object: A "structure" with component "fields".

Member Function Documentation

compare()

int4 TypeStruct::compare ( const Datatype &  op, int4  level  ) const

virtual

Compare for functional equivalence.

Compare this with another data-type. 0 (equality) means the data-types are functionally equivalent (even if names differ) Smaller types come earlier. More specific types come earlier.

Parameters

op	is the data-type to compare with this
level	is maximum level to descend when recursively comparing

Returns

negative, 0, positive depending on ordering of types

Reimplemented from Datatype.

compareDependency()

int4 TypeStruct::compareDependency ( const Datatype &  op ) const

virtual

Compare for storage in tree structure.

Ordering of data-types for the main TypeFactory container. Comparison only goes down one-level in the component structure, before just comparing pointers.

Parameters

op	is the data-type to compare with this

Returns

negative, 0, positive depending on ordering of types

Reimplemented from Datatype.

getField()

const TypeField * TypeStruct::getField	(	int4	off,
		int4	sz,
		int4 *	newoff
	)		const

Get field based on offset.

Given a byte range within this data-type, determine the field it is contained in and pass back the renormalized offset.

Parameters

off	is the byte offset into this
sz	is the size of the byte range
newoff	points to the renormalized offset to pass back

Returns

the containing field or NULL if the range is not contained

getFieldIter()

int4 TypeStruct::getFieldIter ( int4  off ) const

protected

Get index into field list.

Find the proper subfield given an offset. Return the index of that field or -1 if the offset is not inside a field.

Parameters

off	is the offset into the structure

Returns

the index into the field list or -1

getSubType()

Datatype * TypeStruct::getSubType ( uintb  off, uintb *  newoff  ) const

virtual

Recover component data-type one-level down.

Given an offset into this data-type, return the component data-type at that offset. Also, pass back a "renormalized" offset suitable for recursize getSubType() calls: i.e. if the original offset hits the exact start of the sub-type, 0 is passed back. If there is no valid component data-type at the offset, return NULL and pass back the original offset

Parameters

off	is the offset into this data-type
newoff	is a pointer to the passed-back offset

Returns

a pointer to the component data-type or NULL

Reimplemented from Datatype.

restoreXml()

void TypeStruct::restoreXml ( const Element *  el, TypeFactory &  typegrp  )

protectedvirtual

Restore data-type from XML.

Restore a Datatype object from an XML element

Parameters

el	is the XML element
typegrp	is the underlying TypeFactory that will hold the new object

Reimplemented from Datatype.

Referenced by TypeFactory::restoreXmlTypeNoRef().

saveXml()

void TypeStruct::saveXml ( ostream &  s ) const

virtual

Serialize the data-type to XML.

Write out a formal description of the data-type as an XML <type> tag. For composite data-types, the description goes down one level, describing the component types only by reference.

Parameters

s	is the stream to write to

Reimplemented from Datatype.

setFields()

void TypeStruct::setFields ( const vector< TypeField > &  fd )

protected

Establish fields for this.

Copy a list of fields into this structure, establishing its size. Should only be called once when constructing the type

Parameters

fd	is the list of fields to copy in

Referenced by TypeFactory::setFields().

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

• type.hh
• type.cc