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Added support for (?(DEFINE) blocks and updated the docs accordingly.

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Added support for ICU libraries which may be named icui18n.lib on some Win32 platforms.

[SVN r55267]
This commit is contained in:
John Maddock
2009-07-29 17:11:56 +00:00
parent 78f1066b1f
commit 66b633b417
39 changed files with 496 additions and 219 deletions
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15
include/boost/regex/v4/perl_matcher_common.hpp
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@ -714,8 +714,16 @@ inline bool perl_matcher<BidiIterator, Allocator, traits>::match_assert_backref(
// return true if marked sub-expression N has been matched:
int index = static_cast<const re_brace*>(pstate)->index;
bool result;
if(index > 0)
if(index == 9999)
{
// Magic value for a (DEFINE) block:
return false;
}
else if(index > 0)
{
// Check if index is a hash value:
if(index >= 10000)
index = re.get_data().get_id(index);
// Have we matched subexpression "index"?
result = (*m_presult)[index].matched;
pstate = pstate->next.p;
@ -724,7 +732,10 @@ inline bool perl_matcher<BidiIterator, Allocator, traits>::match_assert_backref(
{
// Have we recursed into subexpression "index"?
// If index == 0 then check for any recursion at all, otherwise for recursion to -index-1.
result = recursion_stack_position && ((recursion_stack[recursion_stack_position-1].id == -index-1) || (index == 0));
int id = -index-1;
if(id >= 10000)
id = re.get_data().get_id(id);
result = recursion_stack_position && ((recursion_stack[recursion_stack_position-1].id == id) || (index == 0));
pstate = pstate->next.p;
}
return result;