JLANG::JMultiEquals< JClass_t, JTypelist_t > Struct Template Reference

Template definition of auxiliary base class for composite data structures composed of base classes with equality evaluations capabilities. More...

#include <JMultiEquals.hh>

Inheritance diagram for JLANG::JMultiEquals< JClass_t, JTypelist_t >:

Static Protected Member Functions
template<class JHead_t , class JTail_t >
static bool	eq (const JClass_t &first, const JClass_t &second, const JType< JTypeList< JHead_t, JTail_t > > &type)
	Equals method for composite data types. More...
template<class JHead_t >
static bool	eq (const JClass_t &first, const JClass_t &second, const JType< JTypeList< JHead_t, JNullType > > &type)
	Equals method for composite data types. More...

Friends
bool	operator== (const JClass_t &first, const JClass_t &second)
	Equal operator. More...
bool	operator!= (const JClass_t &first, const JClass_t &second)
	Not equal operator. More...

Detailed Description

template<class JClass_t, class JTypelist_t>
struct JLANG::JMultiEquals< JClass_t, JTypelist_t >

Template definition of auxiliary base class for composite data structures composed of base classes with equality evaluations capabilities.

Each data type X in the type list should have the corresponding operator:

      bool operator==(const X& first, const X& second);

This class uses in-class friend operators (see Barton-Nackman trick).

This class implements the operators == != .

Definition at line 31 of file JMultiEquals.hh.

Member Function Documentation

eq() [1/2]

template<class JClass_t, class JTypelist_t>

template<class JHead_t , class JTail_t >

static bool JLANG::JMultiEquals< JClass_t, JTypelist_t >::eq ( const JClass_t &  first, const JClass_t &  second, const JType< JTypeList< JHead_t, JTail_t > > &  type  )

inlinestaticprotected

Equals method for composite data types.

Parameters

first	first object
second	second object
type	type

Returns

true if two objects are equal; else false

Definition at line 42 of file JMultiEquals.hh.

    {
      return (static_cast<const JHead_t&>(first)  ==
              static_cast<const JHead_t&>(second) &&
              eq(first, second, JType<JTail_t>()));
    }

eq() [2/2]

template<class JClass_t, class JTypelist_t>

template<class JHead_t >

static bool JLANG::JMultiEquals< JClass_t, JTypelist_t >::eq ( const JClass_t &  first, const JClass_t &  second, const JType< JTypeList< JHead_t, JNullType > > &  type  )

inlinestaticprotected

Equals method for composite data types.

Parameters

first	first object
second	second object
type	type

Returns

true if two objects are equal; else false

Definition at line 61 of file JMultiEquals.hh.

    {
      return (static_cast<const JHead_t&>(first) ==
              static_cast<const JHead_t&>(second));
    }

Friends And Related Function Documentation

operator==

template<class JClass_t, class JTypelist_t>

bool operator== ( const JClass_t &  first, const JClass_t &  second  )

friend

Equal operator.

Parameters

first	first object
second	second object

Returns

true if two objects are equal; else false

Definition at line 77 of file JMultiEquals.hh.

    { 
      return eq(first, second, JType<JTypelist_t>());
    }

operator!=

template<class JClass_t, class JTypelist_t>

bool operator!= ( const JClass_t &  first, const JClass_t &  second  )

friend

Not equal operator.

Parameters

first	first object
second	second object

Returns

true if two objects are not equal; else false

Definition at line 91 of file JMultiEquals.hh.

    {
      return !eq(first, second, JType<JTypelist_t>());
    }

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

• JMultiEquals.hh