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@c Generator: GNU source-highlight, by Lorenzo Bettini, http://www.gnu.org/software/src-highlite
@example
@b{void} DebugListener::notify(@b{const} HighlightEvent &event) @{
@b{switch} (event.type) @{
@b{case} HighlightEvent::FORMAT:
@r{@i{// print information about the rule}}
@b{if} (event.token.rule) @{
os << event.token.rule->getAdditionalInfo() << endl;
os << @t{"expression: }\"@t{"} << event.token.rule->toString() << @t{"}\"@t{"}
<< endl;
@}
@r{@i{// now format the matched strings}}
@b{for} (MatchedElements::const_iterator it = event.token.matched.begin(); it
!= event.token.matched.end(); ++it) @{
os << @t{"formatting }\"@t{"} << it->second << @t{"}\"@t{ as "} << it->first
<< endl;
@}
step();
@b{break};
@b{case} HighlightEvent::FORMATDEFAULT:
os << @t{"formatting }\"@t{"} << event.token.matched.front().second
<< @t{"}\"@t{ as default"} << endl;
step();
@b{break};
@b{case} HighlightEvent::ENTERSTATE:
os << @t{"entering state: "} << event.token.rule->getNextState()->getId()
<< endl;
@b{break};
@b{case} HighlightEvent::EXITSTATE:
@b{int} level = event.token.rule->getExitLevel();
os << @t{"exiting state, level: "};
@b{if} (level < 0)
os << @t{"all"};
@b{else}
os << level;
os << endl;
@b{break};
@}
@}
@end example
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