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more::lang::location Class Reference

A lazily resolved value. More...

#include <more/lang/package.h>

Inheritance diagram for more::lang::location:

[legend]Collaboration diagram for more::lang::location:

[legend]List of all members.

Public Methods

• location ()

  Construct an undefined location. More...
  
  

• location (resolver *handler, void *ptr=0)

  Construct a location handled by handler or containing ptr. More...
  
  

• ~location ()
• bool is_defined () const

  True if the location is fixed or if a resolver is provided. More...
  
  

• void set_resolver (resolver *h)

  Set the handler. More...
  
  

• resolver * get_resolver () const

  Return the handler of this location. More...
  
  

• ct_type const * type_of () const

  Return the type of the data at this location. More...
  
  

• void * get () const

  Returns a pointer to the object of the binding. More...
  
  

• void * get_if_ready () const

  Returns a pointer to the object if it no computaiton is needed. More...
  
  

• void call (void *ret, void **args)

  If the value is a function, call it, otherwise screw up the process. More...
  
  

• void set (void *ptr)

  To be called from reslove() to set to pointer to the object. More...
  
  

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Detailed Description

A lazily resolved value.

This has low space overhead (two pointers) most stuff goes into the handler. Lookup is fast after the value is resolved, but resolving the value may be slow.

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Constructor & Destructor Documentation

more::lang::location::location (    )  [inline]

Construct an undefined location. The only valid methods for an undefined location are is_defined(), set(void*) and set_resolver().

more::lang::location::location (  resolver *    handler, void *    ptr = 0 )  [explicit]

Construct a location handled by handler or containing ptr. If ptr is non-zero, handler will not be used by location, so it is safe to set it to 0 as long as set is not invoked with a 0 argument.

more::lang::location::~location (    )

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Member Function Documentation

void more::lang::location::call (  void *    ret, void **    args )

If the value is a function, call it, otherwise screw up the process. In some frameworks this may be equivalent to using ct_proto::call on this->get(). This method is provided in order to allow an interpreted code.

void* more::lang::location::get (    )  const [inline]

Returns a pointer to the object of the binding. The cx_package_variable resovler will invalidate the returned pointer upon re-linking, which may be caused by another call to this method. Precondition: Either the location is fixed or a resolver is provided.

void* more::lang::location::get_if_ready (    )  const [inline]

Returns a pointer to the object if it no computaiton is needed.

resolver* more::lang::location::get_resolver (    )  const [inline]

Return the handler of this location.

bool more::lang::location::is_defined (    )  const [inline]

True if the location is fixed or if a resolver is provided.

void more::lang::location::set (  void *    ptr )  [inline]

To be called from reslove() to set to pointer to the object.

void more::lang::location::set_resolver (  resolver *    h )  [inline]

Set the handler.

ct_type const* more::lang::location::type_of (    )  const [inline]

Return the type of the data at this location. Precondition: A resolver is provided.

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

• more/lang/location.h

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