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Dv::Util::Env::Display Class Reference

A display is a stack of pointers into an environment. More...

#include <env.h>

List of all members.

Public Methods
	Display (const Env &e)
	Initialize a display with an environment.
	Display (const Display &d)
size_t	size () const
const Env *	top () const
Display &	push (const std::string &key)
Display &	pop ()
const Env *	operator() (const std::string &key) const
const Env *	operator() (const std::vector< std::string > &keys) const
Display &	expand (const std::vector< std::string > &keys)
void	substitute (std::ostream &os, std::istream &is) const throw (Exception)
std::ostream &	print (std::ostream &os) const

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Detailed Description

A display is a stack of pointers into an environment.

The bottom of the stack always contains the ``top'' environment e, all other entries point to a subenvironment of e. Unlike for e.g. displays in a Pascal compiler, the stack does not need to represent a path in the underlying environment. Looking up an index in a display returns the first environment found (search proceeds from the stack down).

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Constructor & Destructor Documentation

Dv::Util::Env::Display::Display (  const Env &    e )

Initialize a display with an environment. Parameters: e  root environment of display.

Dv::Util::Env::Display::Display (  const Display &    d )

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Member Function Documentation

size_t Dv::Util::Env::Display::size (    )  const [inline]

const Env* Dv::Util::Env::Display::top (    )  const [inline]

Returns: topmost environment of display

Display& Dv::Util::Env::Display::push (  const std::string &    key )

Display& Dv::Util::Env::Display::pop (    )

const Env* Dv::Util::Env::Display::operator() (  const std::string &    key )  const

const Env* Dv::Util::Env::Display::operator() (  const std::vector< std::string > &    keys )  const

Display& Dv::Util::Env::Display::expand (  const std::vector< std::string > &    keys )

void Dv::Util::Env::Display::substitute (  std::ostream &    os, std::istream &    is )  const throw (Exception)

std::ostream& Dv::Util::Env::Display::print (  std::ostream &    os )  const

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

• env.h

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dvenv-0.2.2

[20 October, 2002]