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Added new experimental captures support.

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[SVN r21243]
This commit is contained in:
John Maddock
2003-12-13 12:28:48 +00:00
parent 6b95ac002e
commit bf9350aa16
28 changed files with 1593 additions and 612 deletions
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37
include/boost/regex/v4/perl_matcher_recursive.hpp
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@ -35,13 +35,14 @@ class backup_subex
public:
template <class A>
backup_subex(const match_results<BidiIterator, A>& w, int i)
: index(i), sub(w[i]) {}
: index(i), sub(w[i], false) {}
template <class A>
void restore(match_results<BidiIterator, A>& w)
{
w.set_first(sub.first, index);
w.set_second(sub.second, index, sub.matched);
}
const sub_match<BidiIterator>& get() { return sub; }
};
template <class BidiIterator, class Allocator, class traits, class Allocator2>
@ -126,6 +127,33 @@ bool perl_matcher<BidiIterator, Allocator, traits, Allocator2>::match_startmark(
pstate = pstate->next.p->next.p;
r = match_all_states();
pstate = next_pstate;
#ifdef BOOST_REGEX_MATCH_EXTRA
if(r && (m_match_flags & match_extra))
{
//
// our captures have been stored in *m_presult
// we need to unpack them, and insert them
// back in the right order when we unwind the stack:
//
unsigned i;
match_results<BidiIterator, Allocator> tm(*m_presult);
for(i = 0; i < tm.size(); ++i)
(*m_presult)[i].get_captures().clear();
// match everything else:
r = match_all_states();
// now place the stored captures back:
for(i = 0; i < tm.size(); ++i)
{
typedef typename sub_match<BidiIterator>::capture_sequence_type seq;
seq& s1 = (*m_presult)[i].get_captures();
const seq& s2 = tm[i].captures();
s1.insert(
s1.end(),
s2.begin(),
s2.end());
}
}
#endif
break;
}
default:
@ -139,6 +167,13 @@ bool perl_matcher<BidiIterator, Allocator, traits, Allocator2>::match_startmark(
r = match_all_states();
if(r == false)
sub.restore(*m_presult);
#ifdef BOOST_REGEX_MATCH_EXTRA
//
// we have a match, push the capture information onto the stack:
//
else if(sub.get().matched && (match_extra & m_match_flags))
((*m_presult)[index]).get_captures().push_back(sub.get());
#endif
}
else
{