vValue::Expr::Core::Base

vValue::Expr::Core::Base Class Reference

Offers basic functions to set the precision etc. More...

#include <vCore.h>

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List of all members.

Public Member Functions

 Base (int precision=1, int minsize=0, char fill='0')
 Default constructor.
 Base (Base const &other)
 Copy constructor.
virtual ~Base ()
virtual Base * copy (void) const
 Returns an exact copy of this object.
virtual int GetInt (void) const
 Returns an integer using the current value.
virtual float GetFloat (void) const
 Returns a float using the current value.
virtual tString GetString (Base const *other=0) const
 Returns a String using the current value using Output().
virtual Variant GetValue (void) const
 Returns the value in its native format.
template<class T>
T Get () const
void SetPrecision (int precision)
 Sets the precision when outputting a string.
void SetMinsize (int size)
 Sets the minimal width when outputting a string.
void SetFill (char fill)
 Sets the fill character when outputting a string shorter than the minimal width.
 operator int () const
 operator float () const
 operator tString () const
virtual bool operator== (Base const &other) const
 compares two values
virtual bool operator!= (Base const &other) const
 compares two values
virtual bool operator>= (Base const &other) const
 compares two values
virtual bool operator<= (Base const &other) const
 compares two values
virtual bool operator> (Base const &other) const
 compares two values
virtual bool operator< (Base const &other) const
 compares two values

Protected Member Functions

template<typename T>
tString Output (T value, Base const *other=0) const
 Converts a value to a string using the settings like precision etc.

Private Attributes

int m_precision
 The precision when returning a string.
int m_minsize
 The minimum width when returning a string.
char m_fill
 The fill character that's used when the contents are too small to fill m_minsize.

Detailed Description

Offers basic functions to set the precision etc.

Definition at line 58 of file vCore.h.

Constructor & Destructor Documentation

vValue::Expr::Core::Base::Base ( int  precision = 1,
int  minsize = 0,
char  fill = '0' 
)

Default constructor.

Parameters:
precision the number of digits after the decimal to be used when outputting a string
minsize the minimum width when outputting a string
fill the character used to fill when outputting a string and the size of the output is smaller than minsize

Definition at line 39 of file vCore.cpp.

Referenced by copy().

00039                                                :
00040         m_precision(precision),
00041         m_minsize(minsize),
00042         m_fill(fill)
00043 {}

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vValue::Expr::Core::Base::Base ( Base const &  other  ) 

Copy constructor.

This will drop all value information of other and create a dummy- class (except if it's called from the parameter initialisation list of a derived class)

Parameters:
other another Base or derived class

Definition at line 47 of file vCore.cpp.

00047                             :
00048         m_precision(other.m_precision),
00049         m_minsize(other.m_minsize),
00050         m_fill(other.m_fill)
00051 { }

virtual vValue::Expr::Core::Base::~Base (  )  [inline, virtual]

Definition at line 69 of file vCore.h.

00069 { };

Member Function Documentation

template<typename T>
tString vValue::Expr::Core::Base::Output ( T  value,
Base const *  other = 0 
) const [inline, protected]

Converts a value to a string using the settings like precision etc.

Returns a string using the settings from this or another object.

This function is inline even though its size since it gets called extemely often from the derived classes.

Parameters:
value the value to be converted and returned
other pointer to the class that contains the settings, if it is 0 the settings will be taken from the class the function was called for
Returns:
the resulting string

Definition at line 103 of file vCore.h.

References m_fill, m_minsize, and m_precision.

Referenced by vValue::Expr::Bindings::Legacy::ConfItem::GetString(), vValue::Expr::Core::Number< T >::GetString(), vValue::Expr::Core::String::GetString(), and GetString().

00103                                                                                  {
00104     if (other==0) other=this;
00105     std::ostringstream buf("");
00106     buf << std::setfill(other->m_fill) << std::setw(other->m_minsize) << std::fixed << std::setprecision(other->m_precision) << value; return buf.str();
00107 }

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Base * vValue::Expr::Core::Base::copy ( void   )  const [virtual]

Returns an exact copy of this object.

This should be overwritten in any derived class or they will mysteriously vanish if you use the tValue::Set container, for example

Returns:
a pointer to the newly created copy

Reimplemented in vValue::Expr::Collection::BaseExt, vValue::Expr::Collection::ColNode, vValue::Expr::Collection::ColUnary, vValue::Expr::Collection::ColPickOne, vValue::Expr::Collection::ColBinary, vValue::Expr::Collection::ColUnion, vValue::Expr::Collection::ColIntersection, vValue::Expr::Collection::ColDifference, vValue::Expr::Core::Number< T >, vValue::Expr::Core::String, vValue::Expr::Core::UnaryOp, vValue::Expr::Core::BinaryOp, vValue::Expr::Bindings::Legacy::Callback< T >, vValue::Expr::Bindings::Legacy::ConfItem, vValue::Expr::Bindings::MathExpr, vValue::Expr::Logic::Condition, vValue::Expr::Math::Add, vValue::Expr::Math::Subtract, vValue::Expr::Math::Multiply, and vValue::Expr::Math::Divide.

Definition at line 116 of file vCore.cpp.

References Base().

Referenced by vValue::Type::Set::operator=().

00116                            {
00117     return new Base();
00118 }

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int vValue::Expr::Core::Base::GetInt ( void   )  const [virtual]

Returns an integer using the current value.

This should be overwritten in a derived class if it's sensible to convert the value to an integer

Returns:
0

Reimplemented in vValue::Expr::Collection::ColNode, vValue::Expr::Collection::ColUnary, vValue::Expr::Collection::ColBinary, vValue::Expr::Core::Number< T >, vValue::Expr::Bindings::Legacy::Callback< T >, and vValue::Expr::Logic::Condition.

Definition at line 80 of file vCore.cpp.

References GetValue().

Referenced by vValue::Expr::Logic::Condition::GetInt(), and operator int().

00080                            {
00081     try {
00082         return boost::lexical_cast<int>(GetValue());
00083     }
00084     catch(boost::bad_lexical_cast &)
00085     {
00086         return 0;
00087     }
00088 }

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float vValue::Expr::Core::Base::GetFloat ( void   )  const [virtual]

Returns a float using the current value.

This should be overwritten in a derived class if it's sensible to convert the value to a floating- point number

Returns:
a stream conversion of the value

Reimplemented in vValue::Expr::Collection::ColNode, vValue::Expr::Collection::ColUnary, vValue::Expr::Collection::ColBinary, vValue::Expr::Core::Number< T >, vValue::Expr::Bindings::Legacy::Callback< T >, and vValue::Expr::Logic::Condition.

Definition at line 93 of file vCore.cpp.

References GetValue().

Referenced by vValue::Expr::Logic::Condition::GetFloat(), operator float(), and cWidget::BarGauge::Render().

00093                                {
00094     try {
00095         return boost::lexical_cast<float>(GetValue());
00096     }
00097     catch(boost::bad_lexical_cast &)
00098     {
00099         return 0.0;
00100     }
00101 }

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tString vValue::Expr::Core::Base::GetString ( Base const *  other = 0  )  const [virtual]

Returns a String using the current value using Output().

This should be overwritten in a derived class if it's sensible to convert the value to a string

Returns:
GetValue streamed to a tString

Reimplemented in vValue::Expr::Core::Number< T >, vValue::Expr::Core::String, vValue::Expr::Bindings::Legacy::Callback< T >, vValue::Expr::Bindings::Legacy::ConfItem, and vValue::Expr::Logic::Condition.

Definition at line 106 of file vCore.cpp.

References GetValue(), and Output().

Referenced by vValue::Expr::Logic::Condition::GetString(), operator tString(), cWidget::NeedleGauge::RenderGraph(), cWidget::VerticalBarGauge::RenderGraph(), and cWidget::BarGauge::RenderGraph().

00106                                                {
00107     Variant v = GetValue();
00108     if (tString *iptr = boost::get<tString>(&v))
00109             return *iptr;
00110     return Output(v, other);
00111 }

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Variant vValue::Expr::Core::Base::GetValue ( void   )  const [virtual]

Returns the value in its native format.

Reimplemented in vValue::Expr::Collection::ColNode, vValue::Expr::Collection::ColUnary, vValue::Expr::Collection::ColBinary, vValue::Expr::Core::Number< T >, vValue::Expr::Core::String, vValue::Expr::Bindings::CFunction::fZeroary< T, F >, vValue::Expr::Bindings::CFunction::fUnary< T, Aa, F >, vValue::Expr::Bindings::CFunction::fBinary< T, Aa, Ab, F >, vValue::Expr::Bindings::Legacy::Callback< T >, vValue::Expr::Bindings::Legacy::ConfItem, vValue::Expr::Bindings::MathExpr, vValue::Expr::Logic::Condition, vValue::Expr::Math::Add, vValue::Expr::Math::Subtract, vValue::Expr::Math::Multiply, and vValue::Expr::Math::Divide.

Definition at line 72 of file vCore.cpp.

Referenced by display_cockpit_lucifer(), GetFloat(), GetInt(), GetString(), and vValue::Expr::Logic::Condition::GetValue().

00072                          {
00073     //std::cerr << "WARNING: Base::GetValue called!" << std::endl;
00074     return std::string("");
00075 }

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tString vValue::Expr::Core::Base::Get< tString > ( void   )  const [inline]

void vValue::Expr::Core::Base::SetPrecision ( int  precision  ) 

Sets the precision when outputting a string.

Sets m_precision to the given value

Parameters:
precision the number of digits after the decimal to be displayed

Definition at line 55 of file vCore.cpp.

References m_precision.

Referenced by cWidget::WithDataFunctions::ProcessDataTags().

00055                                      {
00056     m_precision = precision;
00057 }

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void vValue::Expr::Core::Base::SetMinsize ( int  minsize  ) 

Sets the minimal width when outputting a string.

Sets m_minsize to the given value

Parameters:
minsize the minimal width of the outputted string in # of characters

Definition at line 61 of file vCore.cpp.

References m_minsize.

Referenced by cWidget::WithDataFunctions::ProcessDataTags().

00061                                  {
00062     m_minsize = minsize;
00063 }

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void vValue::Expr::Core::Base::SetFill ( char  fill  ) 

Sets the fill character when outputting a string shorter than the minimal width.

Sets m_fill to the given value

Parameters:
fill the character to be used to fill

Definition at line 67 of file vCore.cpp.

References m_fill.

Referenced by cWidget::WithDataFunctions::ProcessDataTags().

00067                             {
00068     m_fill = fill;
00069 }

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vValue::Expr::Core::Base::operator int (  )  const [inline]

Definition at line 84 of file vCore.h.

References GetInt().

00084 { return GetInt(); }

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vValue::Expr::Core::Base::operator float (  )  const [inline]

Definition at line 85 of file vCore.h.

References GetFloat().

00085 { return GetFloat(); }

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vValue::Expr::Core::Base::operator tString (  )  const [inline]

Definition at line 86 of file vCore.h.

References GetString().

00086 { return GetString(); }

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bool vValue::Expr::Core::Base::operator== ( Base const &  other  )  const [virtual]

compares two values

Reimplemented in vValue::Expr::Collection::ColNode, vValue::Expr::Collection::ColUnary, vValue::Expr::Collection::ColBinary, vValue::Expr::Core::Number< T >, vValue::Expr::Core::String, vValue::Expr::Bindings::Legacy::Callback< T >, and vValue::Expr::Logic::Condition.

Definition at line 120 of file vCore.cpp.

00120 { return false; }

bool vValue::Expr::Core::Base::operator!= ( Base const &  other  )  const [virtual]

compares two values

Reimplemented in vValue::Expr::Collection::ColNode, vValue::Expr::Collection::ColUnary, vValue::Expr::Collection::ColBinary, vValue::Expr::Core::Number< T >, vValue::Expr::Core::String, vValue::Expr::Bindings::Legacy::Callback< T >, and vValue::Expr::Logic::Condition.

Definition at line 121 of file vCore.cpp.

00121 { return true;  }

bool vValue::Expr::Core::Base::operator>= ( Base const &  other  )  const [virtual]

compares two values

Reimplemented in vValue::Expr::Collection::ColNode, vValue::Expr::Collection::ColUnary, vValue::Expr::Collection::ColBinary, vValue::Expr::Core::Number< T >, vValue::Expr::Core::String, vValue::Expr::Bindings::Legacy::Callback< T >, and vValue::Expr::Logic::Condition.

Definition at line 122 of file vCore.cpp.

00122 { return false; }

bool vValue::Expr::Core::Base::operator<= ( Base const &  other  )  const [virtual]

compares two values

Reimplemented in vValue::Expr::Collection::ColNode, vValue::Expr::Collection::ColUnary, vValue::Expr::Collection::ColBinary, vValue::Expr::Core::Number< T >, vValue::Expr::Core::String, vValue::Expr::Bindings::Legacy::Callback< T >, and vValue::Expr::Logic::Condition.

Definition at line 123 of file vCore.cpp.

00123 { return false; }

bool vValue::Expr::Core::Base::operator> ( Base const &  other  )  const [virtual]

compares two values

Reimplemented in vValue::Expr::Collection::ColNode, vValue::Expr::Collection::ColUnary, vValue::Expr::Collection::ColBinary, vValue::Expr::Core::Number< T >, vValue::Expr::Core::String, vValue::Expr::Bindings::Legacy::Callback< T >, and vValue::Expr::Logic::Condition.

Definition at line 124 of file vCore.cpp.

00124 { return false; }

bool vValue::Expr::Core::Base::operator< ( Base const &  other  )  const [virtual]

compares two values

Reimplemented in vValue::Expr::Collection::ColNode, vValue::Expr::Collection::ColUnary, vValue::Expr::Collection::ColBinary, vValue::Expr::Core::Number< T >, vValue::Expr::Core::String, vValue::Expr::Bindings::Legacy::Callback< T >, and vValue::Expr::Logic::Condition.

Definition at line 125 of file vCore.cpp.

00125 { return false; }

Member Data Documentation

int vValue::Expr::Core::Base::m_precision [private]

The precision when returning a string.

Definition at line 59 of file vCore.h.

Referenced by Output(), and SetPrecision().

int vValue::Expr::Core::Base::m_minsize [private]

The minimum width when returning a string.

Definition at line 60 of file vCore.h.

Referenced by Output(), and SetMinsize().

char vValue::Expr::Core::Base::m_fill [private]

The fill character that's used when the contents are too small to fill m_minsize.

Definition at line 61 of file vCore.h.

Referenced by Output(), and SetFill().

The documentation for this class was generated from the following files:
Generated on Sun Mar 16 00:05:49 2008 for Armagetron Advanced by  doxygen 1.5.4