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cast.h File Reference

This file contains functions to do casting and type checking for Object. More...

Compounds

• class is_a

Defines

• #define IOKERNEL__CAST_H

Functions

• bool is_a ( const Object* o )
• bool is_kind_of ( const Object* o )

  Test if an object is a_kind_of instance of a class. More...

• T* to ( const Object* o )

  Cast an object to a class. More...

• const T* to_const ( const Object* o )

  Cast an object to a const class. More...

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Detailed Description

This file contains functions to do casting and type checking for Object.

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Define Documentation

#define IOKERNEL__CAST_H

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Function Documentation

template<class T>
bool is_a (const Object * o)

template<class T>
bool is_kind_of (const Object * o)

Test if an object is a_kind_of instance of a class.

object o is_kind_of class T if o is an instance of T or a subclass of T.

E.g. if (is_kind_of<IfStatement>(object)) ...

Parameters:

T - a subclass of Object.

o - an instance.

Returns:

true iff o is a_kind_of class T.

template<class T>
T * to (const Object * o)

Cast an object to a class.

If the cast is illegal, this function will bomb.

E.g. IfStatement *ifstmt = to<IfStatement>(stmt);

Parameters:

T - a subclass of Object.

o - an instance.

Returns:

the same object o but as class T.

template<class T>
const T * to_const (const Object * o)

Cast an object to a const class.

If the cast is illegal, this function will bomb.

Parameters:

T - a subclass of Object.

o - an instance.

Returns:

the same object o but as const class T.

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