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// CPPScopeSaver.cpp: Implementation of the ScopeSaver class of the parser.
#include "CPPParser.h"
#include "CPPScopeContainers.h"
CPPParser::ScopeSaver::ScopeSaver(
CPPParser* parser_,
CPPScopeState state_
) :
parser(parser_),
state(state_),
committed(false)
{
// Copy all of the scopes exceeeding the reference scope
// state into a separate stack.
scopeStack = new CPPScopeStack;
// This is not especially efficient because it pops the scopes and
// then puts them back... could use improvement.
while (parser->SaveScope() != state)
{
scopeStack->push_front(parser->PopScope());
}
Restore();
}
void
CPPParser::ScopeSaver::Restore()
{
// Pop the scopes exceeding the given state,
// and restore the original scope stack.
parser->RestoreScope(state);
for (
CPPScopeStack::iterator iter = scopeStack->begin();
iter != scopeStack->end();
iter++
)
{
parser->PushScope(*iter);
}
}
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