Base class for describing data types. More...

#include <cdatatype.h>

Inheritance diagram for CDataType:

Public Member Functions
	CDataType (VarDataType_t t)
	Create data type instance.
	CDataType (VarDataType_t t, list< CNode * > packedList)
	Create data type instance.
virtual CDataType *	Clone (CObstack *heap)=0
	Create a new copy with a deep copy.
virtual void	SetVarDataType (VarDataType_t v)
	Set declaration's variable data type.
virtual VarDataType_t	GetVarDataType () const
	Get declaration's variable data type.
virtual void	SetConst (int v)
	Set declaration's const property.
virtual int	GetConst () const
	Get declaration's const property.
virtual int	GetTwoState () const =0
	Get declaration's 2 state property.
virtual int	GetSigned () const =0
	Get declartion's signed property.
virtual NodeType_t	GetNodeType (void) const =0
	Get data type.
virtual int	IsBaseWidthConstant (void) const =0
	Determine if base width (sans packed dimensions) of declaration is constant, ie dependent upon only constants and parameters.
virtual int	IsBaseWidthVolatile (void) const =0
	Determine if base width (sans packed dimensions) of declaration is volatile, ie depend upon parameters or variables.
virtual int	IsBaseWidthEvaluateable (void) const =0
	Determine if base width (sans packed dimensions) of declaration can be evaluated.
virtual INT32	GetBaseWidth (void) const =0
	Evaluate base width (sans packed dimensions) of declaration.
virtual CNode *	GetBaseWidthExp () const =0
	Get expression for datatype's base width (sans packed dimensions).
virtual int	IsScalar () const
	Determine if complete data structure is a scalar.
virtual int	IsVector () const =0
	Determine if complete data structure is a vector.
virtual int	IsPacked () const =0
	Determine if complete data structure is packed.
virtual int	IsPackedWidthConstant (void) const
	Determine if packed or vector width of declaration is constant, ie dependent upon only constants and parameters.
virtual int	IsPackedWidthVolatile (void) const
	Determine if packed or vector width of declaration is volatile, ie depend upon parameters or variables.
virtual int	IsPackedWidthEvaluateable (void) const
	Determine if packed or vector width of declaration can be evaluated.
virtual CNode *	GetPackedMsb () const
	Get expression for declaration's msb.
virtual CNode *	GetPackedLsb () const
	Get expression for declaration's lsb.
virtual CNode *	GetPackedRange () const
	Get expression for datatype's overall packed or vector range (msb/lsb).
virtual INT32	GetPackedWidth (void) const
	Evaluate packed or vector width of declaration.
virtual CNode *	GetPackedWidthExp () const
	Get expression for datatype's overall packed or vector width.
virtual int	PackedWidthDirection (void) const
	Evaluate current decl width direction.
virtual INT32	GetNumberOfPackedDimensions (void) const
	Get number of packed dimensions of declaration.
virtual CNode *	GetPackedMsi (INT32 dim) const
	Get expression tree for upper limit of given packed array dimension.
virtual CNode *	GetPackedLsi (INT32 dim) const
	Get expression tree for lower limit of packed array dimension.
virtual CNode *	GetPackedRange (INT32 dim) const
	Get expression for range of packed array for dimension.
virtual void	Dump (FILE *f) const =0
	Dump data type info to file descriptor.
virtual void	PreVisit1 (int(callback)(CNode , void ), void data)
	Walk tree invoking callback on each node before children have been visited.
virtual void	PostVisit1 (void(callback)(CNode , void ), void data)
	Walk tree invoking callback on each node after children have been visited.
virtual void	PostSubVisit1 (CNode (callback)(CNode , void ), void *data)
	Walk tree invoking callback on each node after children have been visited.
Protected Member Functions
void	Copy (CObstack *heap, const CDataType &o)
	Perform deep copy of given object to this one This should never be call directly, only by subclasses.

Detailed Description

Base class for describing data types.

Constructor & Destructor Documentation

CDataType::CDataType ( VarDataType_t t )

Create data type instance.

CDataType::CDataType	(	VarDataType_t	t,
		list< CNode * >	packedList
	)

Create data type instance.

Member Function Documentation

virtual CDataType* CDataType::Clone ( CObstack * heap ) [pure virtual]

Create a new copy with a deep copy.

Parameters:

heap

heap to use for allocation.

Implemented in CSimpleType.

void CDataType::Copy	(	CObstack *	heap,
		const CDataType &	o
	)			`[protected]`

Perform deep copy of given object to this one This should never be call directly, only by subclasses.

Parameters:

	heap	heap to use for allocation.
	o	declaration to copy.

virtual void CDataType::Dump ( FILE * f ) const [pure virtual]

Dump data type info to file descriptor.

Parameters:

f

file descriptor.

Implemented in CSimpleType.

virtual INT32 CDataType::GetBaseWidth ( void ) const [pure virtual]

Evaluate base width (sans packed dimensions) of declaration.

Returns:: packed or vector width of declaration.

Implemented in CSimpleType.

virtual CNode* CDataType::GetBaseWidthExp ( ) const [pure virtual]

Get expression for datatype's base width (sans packed dimensions).

Returns:: width expression

Implemented in CSimpleType.

virtual int CDataType::GetConst ( ) const [inline, virtual]

Get declaration's const property.

Returns:: value of const property.

virtual NodeType_t CDataType::GetNodeType ( void ) const [pure virtual]

Get data type.

Returns:: node type

Implemented in CSimpleType.

virtual INT32 CDataType::GetNumberOfPackedDimensions ( void ) const [inline, virtual]

Get number of packed dimensions of declaration.

Returns:: number of dimensions, 0 if non-array.

Reimplemented in CSimpleType.

virtual CNode* CDataType::GetPackedLsb ( ) const [virtual]

Get expression for declaration's lsb.

Valid only for Packed and Vector declarations.

Returns:: lsb expression, NULL if scalar.

Reimplemented in CSimpleType.

virtual CNode* CDataType::GetPackedLsi ( INT32 dim ) const [virtual]

Get expression tree for lower limit of packed array dimension.

Parameters:

dim

dimension.

Returns:: expression tree for packed lower limit.

Reimplemented in CSimpleType.

virtual CNode* CDataType::GetPackedMsb ( ) const [virtual]

Get expression for declaration's msb.

Valid only for Packed and Vector declarations.

Returns:: msb expression, NULL if scalar.

Reimplemented in CSimpleType.

virtual CNode* CDataType::GetPackedMsi ( INT32 dim ) const [virtual]

Get expression tree for upper limit of given packed array dimension.

Parameters:

dim

dimension.

Returns:: expression tree for packed upper limit.

Reimplemented in CSimpleType.

virtual CNode* CDataType::GetPackedRange ( ) const [virtual]

Get expression for datatype's overall packed or vector range (msb/lsb).

Returns:: range expression, NULL if scalar.

Reimplemented in CSimpleType.

virtual CNode* CDataType::GetPackedRange ( INT32 dim ) const [inline, virtual]

Get expression for range of packed array for dimension.

Parameters:

dim

dimension to get.

Returns:: range expression for limit.

Reimplemented in CSimpleType.

virtual INT32 CDataType::GetPackedWidth ( void ) const [virtual]

Evaluate packed or vector width of declaration.

Returns:: packed or vector width of declaration.

Reimplemented in CSimpleType.

virtual CNode* CDataType::GetPackedWidthExp ( ) const [virtual]

Get expression for datatype's overall packed or vector width.

Returns:: width expression

Reimplemented in CSimpleType.

virtual int CDataType::GetSigned ( ) const [pure virtual]

Get declartion's signed property.

Returns:: value of signed property.

Implemented in CSimpleType.

virtual int CDataType::GetTwoState ( ) const [pure virtual]

Get declaration's 2 state property.

Returns:: value of 2 state property.

Implemented in CSimpleType.

virtual VarDataType_t CDataType::GetVarDataType ( ) const [inline, virtual]

Get declaration's variable data type.

Returns:: value of signed property.

virtual int CDataType::IsBaseWidthConstant ( void ) const [pure virtual]

Determine if base width (sans packed dimensions) of declaration is constant, ie dependent upon only constants and parameters.

Returns:: non-zero if vector or packed width of declaration is constant.

Implemented in CSimpleType.

virtual int CDataType::IsBaseWidthEvaluateable ( void ) const [pure virtual]

Determine if base width (sans packed dimensions) of declaration can be evaluated.

Returns:: non-zero of packed or vector width of declaration can be evaluated.

Implemented in CSimpleType.

virtual int CDataType::IsBaseWidthVolatile ( void ) const [pure virtual]

Determine if base width (sans packed dimensions) of declaration is volatile, ie depend upon parameters or variables.

Returns:: non-zero of vector or packed width of declaration is volatile.

Implemented in CSimpleType.

virtual int CDataType::IsPacked ( ) const [pure virtual]

Determine if complete data structure is packed.

Packed data structures can be treated as a single vector.

Returns:: non-zero if complete data structure is packed.

Implemented in CSimpleType.

virtual int CDataType::IsPackedWidthConstant ( void ) const [virtual]

Determine if packed or vector width of declaration is constant, ie dependent upon only constants and parameters.

Returns:: non-zero if vector or packed width of declaration is constant.

virtual int CDataType::IsPackedWidthEvaluateable ( void ) const [virtual]

Determine if packed or vector width of declaration can be evaluated.

Returns:: non-zero of packed or vector width of declaration can be evaluated.

virtual int CDataType::IsPackedWidthVolatile ( void ) const [virtual]

Determine if packed or vector width of declaration is volatile, ie depend upon parameters or variables.

Returns:: non-zero of vector or packed width of declaration is volatile.

virtual int CDataType::IsScalar ( ) const [virtual]

Determine if complete data structure is a scalar.

Scalars are single-bit intergal types.

Returns:: non-zero if complete data structure is a vector.

virtual int CDataType::IsVector ( ) const [pure virtual]

Determine if complete data structure is a vector.

Vectors are multi-bit intergal types.

Returns:: non-zero if complete data structure is a vector.

Implemented in CSimpleType.

virtual int CDataType::PackedWidthDirection ( void ) const [virtual]

Evaluate current decl width direction.

Expression must be constant.

Returns:: 1 - big endian, -1 - little endian, 0 - cannot be determined

Reimplemented in CSimpleType.

virtual void CDataType::PostSubVisit1	(	CNode ()(CNode , void )	callback,
		void *	data
	)			`[virtual]`

Walk tree invoking callback on each node after children have been visited.

callback may modify tree and return a modified subtree.

Parameters:

	callback	function to be called for each node
	data	opaque argument passed to callback function

Returns:: modified child subtree.

virtual void CDataType::PostVisit1	(	void()(CNode , void *)	callback,
		void *	data
	)			`[virtual]`

Walk tree invoking callback on each node after children have been visited.

Parameters:

	callback	function to be called for each node
	data	opaque argument passed to callback function

virtual void CDataType::PreVisit1	(	int()(CNode , void *)	callback,
		void *	data
	)			`[virtual]`

Walk tree invoking callback on each node before children have been visited.

callback can terminate transversal early. callback returns 0 to terminate transversal early.

Parameters:

	callback	function to be called for each node
	data	opaque argument passed to callback function

virtual void CDataType::SetConst ( int v ) [inline, virtual]

Set declaration's const property.

Use to indicate type is a constant variable.

Parameters:

v

value to const property.

virtual void CDataType::SetVarDataType ( VarDataType_t v ) [inline, virtual]

Set declaration's variable data type.

Parameters:

v

variable data type

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

/net/fileserver/nas/home/mdh/vrq/src/cdatatype.h

CDataType Class Reference

Public Member Functions

Protected Member Functions

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation