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context::ContextStack Class Reference

This is the context stack, a Singleton. More...

#include <context.h>

Collaboration diagram for context::ContextStack:

[legend]List of all members.

Public Methods
void	push (Context &cont)
	Adds a Context to the end of the stack.
void	pop ()
	Removes a Context from the end of the stack.
void	pop (Context &cx)
	Removes a Context from the end of the stack.
auto_ptr< vector< string > >	makeSVector () const
	Produces a vector of strings representing the current ContextStack.
Static Public Methods
ContextStack &	getInstanceOf ()
	Static method to get a ContextStack.
void	print ()
	Prints the current context.

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Detailed Description

This is the context stack, a Singleton.

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Member Function Documentation

ContextStack& context::ContextStack::getInstanceOf (    )  [inline, static]

Static method to get a ContextStack. Returns: The ContextStack { if (instance==NULL) instance=new ContextStack; if (instance==NULL) throw "Argh!"; return *instance; }

void ContextStack::push (  Context &    cont )

Adds a Context to the end of the stack. Parameters: cont  The Context to add { stack.push_back(&cont); }

void ContextStack::pop (    )

Removes a Context from the end of the stack. { stack.pop_back(); }

void ContextStack::pop (  Context &    cx )

Removes a Context from the end of the stack. Prints interesting errors if the wrong Context is removed Parameters: cx  The Context to remove { if (stack.size()==0) { cout<<"Attempt to pop empty stack\n"; return; } if (&cx!=stack[stack.size()-1]) { cout <<"Attempt to pop wrong context:\n"; cout <<"\""<<cx.getDescription()<<"\" (cx) should be\n"; cout <<"\""<<stack[stack.size()-1]->getDescription()<<"\" (*stack["; cout <<stack.size()<<"])\n"; return; } pop(); }

auto_ptr< vector< string > > ContextStack::makeSVector (    )  const

Produces a vector of strings representing the current ContextStack. Returns: An auto_ptr to the vector of strings created { auto_ptr< vector<string> > myvector(new vector<string>); if (myvector.get()==NULL) return myvector; for (size_t i=0; i<stack.size(); ++i) { myvector->push_back(stack[i]->getDescription()); } return myvector; }

void ContextStack::print (    )  [static]

Prints the current context. { auto_ptr< vector<string> > cxv(getInstanceOf().makeSVector()); Context::print(*cxv); }

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

• context.h
• context.cpp

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