static Pire::CountingScanner Do(const Patterns& patterns, bool /*surround*/)
{
Pire::CountingScanner sc;
for (Patterns::const_iterator i = patterns.begin(), ie = patterns.end(); i != ie; ++i) {
Pire::CountingScanner tsc = Pire::CountingScanner(
Pire::Lexer(*i).Parse(), Pire::Lexer(".*").Parse());
if (i == patterns.begin())
tsc.Swap(sc);
else {
sc = Pire::CountingScanner::Glue(sc, tsc);
if (sc.Empty()) {
std::ostringstream msg;
msg << "Scanner gluing failed at regexp " << *i << " - pattern too complicated";
throw std::runtime_error(msg.str());
}
}
}
return sc;
}
static Pire::Impl::Scanner<Relocation, Shortcutting> Do(const Patterns& patterns, bool surround)
{
typedef Pire::Impl::Scanner<Relocation, Shortcutting> Sc;
Sc sc;
for (Patterns::const_iterator i = patterns.begin(), ie = patterns.end(); i != ie; ++i) {
Pire::Fsm fsm = Pire::Lexer(*i).Parse();
if (surround)
fsm.Surround();
Sc tsc = fsm.Compile<Sc>();
if (i == patterns.begin())
tsc.Swap(sc);
else {
sc = Sc::Glue(sc, tsc);
if (sc.Empty()) {
std::ostringstream msg;
msg << "Scanner gluing failed at regexp " << *i << " - pattern too complicated";
throw std::runtime_error(msg.str());
}
}
}
return sc;
}
