class THaArrayString


 THaArrayString

 This class parses the array subscript(s) of variable.
 In the trivial case of a scalar, it simply stores the variable name.
 Otherwise, it extracts the individual subscript(s) and number of
 dimensions.

 Example:

   THaArrayString txt("x[7,4]");

 gives
    fName   = "x"
    fNdim   = 2
    fDim    = [ 7, 4 ]
    fLen    = 7*4 = 28
    fStatus = 0

 THaArrayStrings are used in particular by THaFormula and THaVar.

Function Members (Methods)

public:

	THaArrayString()
	THaArrayString(const char* string)
	THaArrayString(const THaArrayString&)
virtual	~THaArrayString()
static TClass*	Class()
const Int_t*	GetDim() const
Int_t	GetLen() const
const char*	GetName() const
Byte_t	GetNdim() const
ULong_t	Hash() const
virtual TClass*	IsA() const
Bool_t	IsArray() const
Bool_t	IsError() const
const char*	operator const char*() const
THaArrayString&	operator=(const THaArrayString&)
THaArrayString&	operator=(const char* rhs)
virtual Int_t	Parse(const char* string = "")
virtual void	Print(Option_t* opt = "")
virtual void	ShowMembers(TMemberInspector& insp, char* parent)
THaArrayString::EStatus	Status() const
virtual void	Streamer(TBuffer& b)
void	StreamerNVirtual(TBuffer& b)

Data Members

public:

enum EStatus {	kOK
	kBadsyntax
	kIllegalchars
	kToolarge
	kToolong
	kNotinit
};

protected:

Int_t*	fDim	Dimensions, if any (NULL for scalar)
Int_t	fLen	Length of array (product of all dimensions)
TString	fName	Variable name
Byte_t	fNdim	Number of array dimensions (0=scalar)
THaArrayString::EStatus	fStatus	Status of Parse()

Class Charts

Inheritance Chart:

THaArrayString

Function documentation

THaArrayString( const THaArrayString& rhs )

 Copy constructor

THaArrayString& operator=( const THaArrayString& rhs )

 Assignment operator

Int_t Parse(const char* string = "")

 Parse the given string for array syntax.
 For multidimensional arrays, both C-style and comma-separated subscripts
 are supported.

 Examples of legal expressions:

    "x"           scalar "x"
    "x[2]"        1-d array "x" of size 2
    "x[2][3]"     2-d array "x" of size 2x3=6
    "x[2,3]"      same 2-d array
    "x[2][3][4]"  3-d array "x" of size 2x3x4=24

 Results are stored in this object and can be retrieved using
 GetName(), GetNdim(), GetDim(), and GetLen().

 The maximum length of the input string is 255 characters.

 Returns 0 if ok, or EStatus error code otherwise (see header).

void Print(Option_t* opt = "")

THaArrayString()

{}

THaArrayString( const char* string )

{ Parse(); }

THaArrayString& operator=( const THaArrayString& )

virtual ~THaArrayString()

{ delete [] fDim; }

operator const char*()

{ return fName.Data(); }

const Int_t* GetDim()

{ return fDim; }

Int_t GetLen()

{ return fLen; }

const char* GetName()

{ return fName.Data(); }

Byte_t GetNdim()

{ return fNdim; }

ULong_t Hash()

{ return fName.Hash(); }

Bool_t IsArray()

{ return (fNdim > 0); }

Bool_t IsError()

{ return (fStatus != kOK); }

Last change: Sat Nov 7 21:26:42 2009
Last generated: 2009-11-07 21:26

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