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Formattable Class Reference

Formattable objects can be passed to the Format class or its subclasses for formatting. More...

#include <fmtable.h>

List of all members.


Public Members

enum  ISDATE { kIsDate }
This enum is only used to let callers distinguish between the Formattable(UDate) constructor and the Formattable(double) constructor; the compiler cannot distinguish the signatures, since UDate is currently typedefed to be either double or long. More...

enum  Type { kDate, kDouble, kLong, kString, kArray }
The list of possible data types of this Formattable object. More...

 Formattable ()
 Formattable (UDate d, ISDATE)
Creates a Formattable object with a UDate instance. More...

 Formattable (double d)
Creates a Formattable object with a double number. More...

 Formattable (int32_t l)
Creates a Formattable object with a long number. More...

 Formattable (const char* strToCopy)
Creates a Formattable object with a char string pointer. More...

 Formattable (const UnicodeString& stringToCopy)
Creates a Formattable object with a UnicodeString object to copy from. More...

 Formattable (UnicodeString* stringToAdopt)
Creates a Formattable object with a UnicodeString object to adopt from. More...

 Formattable (const Formattable* arrayToCopy, int32_t count)
Creates a Formattable object with an array of Formattable objects. More...

 Formattable (const Formattable&)
Copy constructor. More...

Formattable& operator= (const Formattable&)
Assignment operator. More...

bool_t operator== (const Formattable&) const
Equality comparison. More...

bool_t operator!= (const Formattable& other) const
virtual ~Formattable ()
Destructor. More...

Type getType (void) const
Gets the data type of this Formattable object. More...

double getDouble (void) const
Gets the double value of this object. More...

int32_t getLong (void) const
Gets the long value of this object. More...

UDate getDate (void) const
Gets the Date value of this object. More...

UnicodeStringgetString (UnicodeString& result) const
Gets the string value of this object. More...

const Formattable* getArray (int32_t& count) const
Gets the array value and count of this object. More...

Formattable& operator[] (int32_t index)
Accesses the specified element in the array value of this Formattable object. More...

void setDouble (double d)
Sets the double value of this object. More...

void setLong (int32_t l)
Sets the long value of this object. More...

void setDate (UDate d)
Sets the Date value of this object. More...

void setString (const UnicodeString& stringToCopy)
Sets the string value of this object. More...

void setArray (const Formattable* array, int32_t count)
Sets the array value and count of this object. More...

void adoptString (UnicodeString* stringToAdopt)
Sets and adopts the string value and count of this object. More...

void adoptArray (Formattable* array, int32_t count)
Sets and adopts the array value and count of this object. More...

UnicodeStringfString
double fDouble
int32_t fLong
UDate fDate
Formattable* fArray
int32_t fCount
   struct {
      Formattable*   fArray
      int32_t   fCount
   } fArrayAndCount


Detailed Description

Formattable objects can be passed to the Format class or its subclasses for formatting.

Formattable is a thin wrapper class which interconverts between the primitive numeric types (double, long, etc.) as well as UDate and UnicodeString.

Note that this is fundamentally different from the Java behavior, since in this case the various formattable objects do not occupy a hierarchy, but are all wrapped within this one class. Formattable encapsulates all the polymorphism in itself.

It would be easy to change this so that Formattable was an abstract base class of a genuine hierarchy, and that would clean up the code that currently must explicitly check for type, but that seems like overkill at this point.


Member Enumeration Documentation

enum Formattable::ISDATE

This enum is only used to let callers distinguish between the Formattable(UDate) constructor and the Formattable(double) constructor; the compiler cannot distinguish the signatures, since UDate is currently typedefed to be either double or long.

If UDate is changed later to be a bonafide class or struct, then we no longer need this enum.

Enumeration values:
kIsDate  

enum Formattable::Type

The list of possible data types of this Formattable object.

Enumeration values:
kDate  
kDouble  
kLong  
kString  
kArray  

Member Function Documentation

Formattable::Formattable ()

Formattable::Formattable (UDate d, ISDATE)

Creates a Formattable object with a UDate instance.

Parameters:
d   the UDate instance.
ISDATE   the flag to indicate this is a date.
Stable:

Formattable::Formattable (double d)

Creates a Formattable object with a double number.

Parameters:
d   the double number.
Stable:

Formattable::Formattable (int32_t l)

Creates a Formattable object with a long number.

Parameters:
d   the long number.
Stable:

Formattable::Formattable (const char * strToCopy)

Creates a Formattable object with a char string pointer.

Assumes that the char string is null terminated.

Parameters:
strToCopy   the char string.
Stable:

Formattable::Formattable (const UnicodeString & stringToCopy)

Creates a Formattable object with a UnicodeString object to copy from.

Parameters:
strToCopy   the UnicodeString string.
Stable:

Formattable::Formattable (UnicodeString * stringToAdopt)

Creates a Formattable object with a UnicodeString object to adopt from.

Parameters:
strToAdopt   the UnicodeString string.
Stable:

Formattable::Formattable (const Formattable * arrayToCopy, int32_t count)

Creates a Formattable object with an array of Formattable objects.

Parameters:
arrayToCopy   the Formattable object array.
count   the array count.
Stable:

Formattable::Formattable (const Formattable &)

Copy constructor.

Stable:

Formattable & Formattable::operator= (const Formattable &)

Assignment operator.

Stable:

bool_t Formattable::operator== (const Formattable &) const

Equality comparison.

Stable:

bool_t Formattable::operator!= (const Formattable & other) const [inline]

virtual Formattable::~Formattable () [virtual]

Destructor.

Stable:

Type Formattable::getType (void) const

Gets the data type of this Formattable object.

Stable:

double Formattable::getDouble (void) const [inline]

Gets the double value of this object.

Stable:

int32_t Formattable::getLong (void) const [inline]

Gets the long value of this object.

Stable:

UDate Formattable::getDate (void) const [inline]

Gets the Date value of this object.

Stable:

UnicodeString & Formattable::getString (UnicodeString & result) const [inline]

Gets the string value of this object.

Stable:

const Formattable * Formattable::getArray (int32_t & count) const [inline]

Gets the array value and count of this object.

Stable:

Formattable & Formattable::operator[] (int32_t index) [inline]

Accesses the specified element in the array value of this Formattable object.

Parameters:
index   the specified index.
Returns:
the accessed element in the array.
Stable:

void Formattable::setDouble (double d)

Sets the double value of this object.

Stable:

void Formattable::setLong (int32_t l)

Sets the long value of this object.

Stable:

void Formattable::setDate (UDate d)

Sets the Date value of this object.

Stable:

void Formattable::setString (const UnicodeString & stringToCopy)

Sets the string value of this object.

Stable:

void Formattable::setArray (const Formattable * array, int32_t count)

Sets the array value and count of this object.

Stable:

void Formattable::adoptString (UnicodeString * stringToAdopt)

Sets and adopts the string value and count of this object.

Stable:

void Formattable::adoptArray (Formattable * array, int32_t count)

Sets and adopts the array value and count of this object.

Stable:

Member Data Documentation

UnicodeString* Formattable::fString

double Formattable::fDouble

int32_t Formattable::fLong

UDate Formattable::fDate

Formattable* Formattable::fArray

int32_t Formattable::fCount

struct { ... } fArrayAndCount


The documentation for this class was generated from the following file:
Generated at Thu Feb 10 15:30:40 2000 for icu by doxygen 1.0.0 written by Dimitri van Heesch, © 1997-1999