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Core::Number

Core::Number Class Reference

#include <Number.h>

Inheritance diagram for Core::Number:

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Collaboration diagram for Core::Number:

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List of all members.

Public Member Functions

virtual String * className (void) const
 Answer receiver class name.
virtual operator long (void) const
virtual long asLong (void) const
virtual operator unsigned long (void) const
virtual unsigned long asUnsignedLong (void) const
virtual operator long long (void) const
virtual long long asLongLong (void) const abstract
virtual operator double (void) const
virtual double asDouble (void) const abstract
virtual bool isEqual (const Object *object) const abstract
 Compare receiver with given object.
virtual bool isEqual (const Object &object) const
 Compare receiver with given object.
virtual bool isEqual (int arg) const
virtual bool isEqual (double arg) const
virtual bool isEqualToDouble (double argument) const abstract
virtual bool isEqualToLongLong (long long argument) const abstract
virtual Number * negate (void) abstract
virtual bool isInteger (void) const
virtual bool isNegative (void) const
 Answer whether the receiver is negative.
virtual bool isNumber (void) const
 Answer if the receiver is a Number.
virtual bool isPositive (void) const abstract
 Answer whether the recevier is positive (including zero).
virtual bool isReal (void) const
virtual bool isZero (void) const abstract
 Answer whether the receiver represents a zero in it's domain.
virtual void visitBy (Visitor *visitor)
 Visit a number with the given visitor.

Static Public Member Functions

static Number * fromString (String *str)
 Get a number from a string.
static Number * fromStringRadix (String *str, int radix)

Member Function Documentation

virtual double Core::Number::asDouble (  void   )  const [virtual]
 

Reimplemented in Core::Integer, and Core::Real.

Referenced by operator double().

long Number::asLong (  void   )  const [virtual]
 

Definition at line 82 of file Number.cc.

References asLongLong().

Referenced by Core::UCS2StreamEncoder::decodeFrom(), and operator long().

00083 {
00084     return (long) asLongLong();
00085 }

virtual long long Core::Number::asLongLong (  void   )  const [virtual]
 

Reimplemented in Core::Integer, and Core::Real.

Referenced by asLong(), asUnsignedLong(), Core::ByteArray::checkObject(), and operator long long().

unsigned long Number::asUnsignedLong (  void   )  const [virtual]
 

Definition at line 92 of file Number.cc.

References asLongLong().

Referenced by Core::Stream::nextPutBigEndianShort(), Core::Stream::nextPutLittleEndianLong(), Core::Stream::nextPutLittleEndianShort(), operator unsigned long(), and Core::Character::value().

00093 {
00094     return (unsigned long) asLongLong();
00095 }

String * Number::className (  void   )  const [virtual]
 

Answer receiver class name.

Because there isn't any standard way to obtain class name this method comes to place.

Every class should rewrite this method but many didn't (yet).

Reimplemented from Core::Object.

Reimplemented in Core::Integer, and Core::Real.

Definition at line 37 of file Number.cc.

00038 {
00039     return new String("Number");
00040 }

Number * Number::fromString (  String *  str  )  [static]
 

Get a number from a string.

  • str - The string that possibly contains a decimal number in the first characters.

Definition at line 43 of file Number.cc.

References fromStringRadix().

Referenced by Core::String::asNumber().

00044 {
00045     return fromStringRadix(str, 0);
00046 }

Number * Number::fromStringRadix (  String *  str,
int  radix
)  [static]
 

Definition at line 48 of file Number.cc.

References Core::String::asCString(), Core::Locale::current(), isEqual(), Core::Integer::value(), and Core::Real::value().

Referenced by Core::String::asNumberRadix(), and fromString().

00049 {
00050     char *string = str->asCString();
00051     char *end;
00052     long long integer;
00053 
00054     integer = strtoll(string, &end, radix);
00055     if (end[0] == '.' || Locale::current()->decimalPoint()->isEqual(end[0])) {
00056         double real;
00057         end[0] = Locale::current()->decimalPoint()->asInteger();
00058         real = strtod(string, NULL);
00059         return Real::value(real);
00060     } else {
00061         return Integer::value(integer);
00062     }
00063 }

bool Number::isEqual (  double  arg  )  const [virtual]
 

Reimplemented in Core::Integer, and Core::Real.

Definition at line 71 of file Number.cc.

References isEqualToDouble().

00072 {
00073     return this->isEqualToDouble(arg);
00074 }

bool Number::isEqual (  int  arg  )  const [virtual]
 

Reimplemented in Core::Integer, and Core::Real.

Definition at line 66 of file Number.cc.

References isEqualToLongLong().

00067 {
00068     return this->isEqualToLongLong(arg);
00069 }

virtual bool Core::Number::isEqual (  const Object &  object  )  const [inline, virtual]
 

Compare receiver with given object.

Do not rewrite this method. It just a sugar for Object::isEqual(Object *).

  • object - object to compare receiver with

Reimplemented from Core::Object.

Reimplemented in Core::Integer, and Core::Real.

Definition at line 65 of file Number.h.

References Core::Object::isEqual().

00066       { return Object::isEqual(object); }

virtual bool Core::Number::isEqual (  const Object *  object  )  const [virtual]
 

Compare receiver with given object.

This method could compare objects with more sophisticated algorithm (eg. based on instance variables comparing or so).

If you rewrite this method you should rewrite hash() too.

  • object - object to compare receiver with

Reimplemented from Core::Object.

Reimplemented in Core::Integer, and Core::Real.

Referenced by fromStringRadix(), Core::Real::isEqual(), and Core::Integer::isEqual().

virtual bool Core::Number::isEqualToDouble (  double  argument  )  const [virtual]
 

Reimplemented in Core::Integer, and Core::Real.

Referenced by isEqual().

virtual bool Core::Number::isEqualToLongLong (  long long  argument  )  const [virtual]
 

Reimplemented in Core::Integer, and Core::Real.

Referenced by isEqual().

bool Number::isInteger (  void   )  const [virtual]
 

Reimplemented in Core::Integer.

Definition at line 108 of file Number.cc.

00109 {
00110     return false;
00111 }

bool Number::isNegative (  void   )  const [virtual]
 

Answer whether the receiver is negative.

Definition at line 113 of file Number.cc.

References isPositive().

00114 {
00115     return !isPositive();
00116 }

bool Number::isNumber (  void   )  const [virtual]
 

Answer if the receiver is a Number.

Reimplemented from Core::Object.

Definition at line 118 of file Number.cc.

00119 {
00120     return true;
00121 }

virtual bool Core::Number::isPositive (  void   )  const [virtual]
 

Answer whether the recevier is positive (including zero).

Reimplemented in Core::Integer, and Core::Real.

Referenced by isNegative().

bool Number::isReal (  void   )  const [virtual]
 

Reimplemented in Core::Real.

Definition at line 123 of file Number.cc.

00124 {
00125     return false;
00126 }

virtual bool Core::Number::isZero (  void   )  const [virtual]
 

Answer whether the receiver represents a zero in it's domain.

Reimplemented in Core::Integer, and Core::Real.

virtual Number* Core::Number::negate (  void   )  [virtual]
 

Reimplemented in Core::Integer, and Core::Real.

Number::operator double (  void   )  const [virtual]
 

Definition at line 102 of file Number.cc.

References asDouble().

00103 {
00104     return asDouble();
00105 }

Number::operator long (  void   )  const [virtual]
 

Definition at line 77 of file Number.cc.

References asLong().

00078 {
00079     return asLong();
00080 }

Number::operator long long (  void   )  const [virtual]
 

Definition at line 97 of file Number.cc.

References asLongLong().

00098 {
00099     return asLongLong();
00100 }

Number::operator unsigned long (  void   )  const [virtual]
 

Definition at line 87 of file Number.cc.

References asUnsignedLong().

00088 {
00089     return asUnsignedLong();
00090 }

void Number::visitBy (  Visitor *  visitor  )  [virtual]
 

Visit a number with the given visitor.

Visitor is able to visit just a number.

See also:
Visitor

Reimplemented from Core::Object.

Definition at line 129 of file Number.cc.

References Core::Visitor::visitNumber().

00130 {
00131     visitor->visitNumber(this);
00132 }

The documentation for this class was generated from the following files:
Generated on Mon Nov 27 09:51:44 2006 for Smalltalk like C++ Class Library by  doxygen 1.4.2