CFref Class Reference

Forward reference declaration. More...

#include <cfref.h>

Inheritance diagram for CFref:

List of all members.

Public Member Functions
	CFref (CSymbol *symbol, Coord_t *aLoc)
	Create a forward reference.
virtual CDecl *	Clone (CObstack *heap)
	Create a clone of this declaration.
void	SetDecl (CDecl *aDecl)
	Set forward declaration's actual declaration.
CDecl *	GetDecl (void)
	Get forward reference's actual declaration.
void	SetRangeInfo (int isArray, CNode *range)
	Set range info for declaration.
CNode *	GetMsb (void)
	Get msb of vector range.
CNode *	GetLsb (void)
	Get lsb of vector range.
void	DisableWidthInferencing ()
	Disable width inferencing.
virtual int	IsWidthConstant (void)
	Determine if packed width of declaration is constant, ie dependent upon only constants and parameters.
virtual int	IsWidthVolatile (void)
	Determine if packed width of declaration is volatile, ie depend upon parameters or variables.
virtual int	IsWidthEvaluateable (void)
	Determine if packed width of declaration can be evaluated.
virtual INT32	GetWidth (void)
	Evaluate packed width of declaration.
virtual CNode *	GetRange ()
	Get expression for declaration's range (msb/lsb)
Decl_t	Direction ()
	Get direction of declaration.
void	Direction (Decl_t d)
	Set direction of declaration.
void	Lval (int aLval)
	Set lval flag.
int	Lval ()
	Get lval flag.
void	IsArray (int v)
	Set array flag.
int	IsArray ()
	Get array flag.
int	IndicesRangeValid ()
	Determine if range can be inferred.
void	ConstrainTypes (const list< Decl_t > &aTypes)
	Add a constraint on valid types for this declaration.
int	IsTypeValid (Decl_t t)
	Test if a give declaration type is valid for this reference.
virtual void	Dump (FILE *f)
	Dump declaration info to file descriptor.

---

Detailed Description

Forward reference declaration.

This class should only be used by the parser and should never appear in or be created by plugins.

---

Constructor & Destructor Documentation

CFref::CFref	(	CSymbol *	symbol,
		Coord_t *	aLoc
	)

Create a forward reference.

Parameters:

symbol	declarations symbol.
aLoc	file coordinates.

---

Member Function Documentation

virtual CDecl* CFref::Clone

(

CObstack *

heap

)

[inline, virtual]

Create a clone of this declaration.

Parameters:

heap	heap to use for allocation.

Returns:

new declaration.

Implements CDecl.

void CFref::ConstrainTypes

(

const list< Decl_t > &

aTypes

)

[inline]

Add a constraint on valid types for this declaration.

Note eNONE must always be in type list.

Parameters:

aTypes

list of valid types (must incude eNONE).

Decl_t CFref::Direction

(

)

[inline]

Get direction of declaration.

Returns:

d direction type.

void CFref::Direction

(

Decl_t

d

)

[inline]

Set direction of declaration.

Parameters:

d	direction type.

void CFref::DisableWidthInferencing

(

)

[inline]

Disable width inferencing.

virtual void CFref::Dump

(

FILE *

f

)

[virtual]

Dump declaration info to file descriptor.

Parameters:

f	file descriptor.

Reimplemented from CDecl.

CDecl* CFref::GetDecl

(

void

)

Get forward reference's actual declaration.

Returns:

actual declaration, NULL if not assigned.

CNode* CFref::GetLsb

(

void

)

[virtual]

Get lsb of vector range.

Returns:

lsb expression, NULL if scalar.

Reimplemented from CDecl.

CNode* CFref::GetMsb

(

void

)

[virtual]

Get msb of vector range.

Returns:

msb expression, NULL if scalar.

Reimplemented from CDecl.

virtual CNode* CFref::GetRange

(

)

[virtual]

Get expression for declaration's range (msb/lsb)

Returns:

range expression, NULL if scalar.

virtual INT32 CFref::GetWidth

(

void

)

[virtual]

Evaluate packed width of declaration.

Returns:

packed width of declaration.

int CFref::IndicesRangeValid

(

)

Determine if range can be inferred.

Returns:

non-zero if range can be inferred.

void CFref::IsArray

(

int

v

)

[inline]

Set array flag.

Parameters:

v	non-zero if decl is an array.

int CFref::IsArray

(

)

[inline]

Get array flag.

Returns:

non-zero if decl is an array.

int CFref::IsTypeValid

(

Decl_t

t

)

[inline]

Test if a give declaration type is valid for this reference.

Parameters:

t	declaration type to test for.

Returns:

non-zero if type is compatable with constraints.

virtual int CFref::IsWidthConstant

(

void

)

[virtual]

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

Returns:

non-zero of packed width of declaration is constant.

virtual int CFref::IsWidthEvaluateable

(

void

)

[virtual]

Determine if packed width of declaration can be evaluated.

Returns:

non-zero of packed width of declaration can be evaluated.

virtual int CFref::IsWidthVolatile

(

void

)

[virtual]

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

Returns:

non-zero of packed width of declaration is volatile.

void CFref::Lval

(

int

aLval

)

[inline]

Set lval flag.

Parameters:

aLval

non-zero means decl has been used as an lval.

int CFref::Lval

(

)

[inline]

Get lval flag.

Returns:

non-zero if decl has been used as an lval.

void CFref::SetDecl

(

CDecl *

aDecl

)

Set forward declaration's actual declaration.

Parameters:

aDecl

actual declaration for forward reference.

void CFref::SetRangeInfo	(	int	isArray,
		CNode *	range
	)

Set range info for declaration.

Parameters:

isArray	non-zero if declaration is an array.
range	vector range expression.

---

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

• /usr/src/RPM/BUILD/vrq-1.0.96/src/cfref.h