private bool extractPattern(int index, int[] next)
{
int start = index;
int end = index;
int indicator = index;
if (expr_[index] == '(')
{
++index;
index = extractSubPattern('(', ')', index);
indicator = index;
end = extractRepetition(index);
if (indicator == end)
{
NdnRegexMatcherBase matcher = new NdnRegexBackrefMatcher(
expr_.Substring(start, (end) - (start)), backrefManager_);
backrefManager_.pushRef(matcher);
((NdnRegexBackrefMatcher)matcher).lateCompile();
ILOG.J2CsMapping.Collections.Collections.Add(matchers_, matcher);
}
else
{
ILOG.J2CsMapping.Collections.Collections.Add(matchers_, new NdnRegexRepeatMatcher(expr_.Substring(start, (end) - (start)), backrefManager_, indicator - start));
}
}
else if (expr_[index] == '<')
{
++index;
index = extractSubPattern('<', '>', index);
indicator = index;
end = extractRepetition(index);
ILOG.J2CsMapping.Collections.Collections.Add(matchers_, new NdnRegexRepeatMatcher(
expr_.Substring(start, (end) - (start)), backrefManager_, indicator
- start));
}
else if (expr_[index] == '[')
{
++index;
index = extractSubPattern('[', ']', index);
indicator = index;
end = extractRepetition(index);
ILOG.J2CsMapping.Collections.Collections.Add(matchers_, new NdnRegexRepeatMatcher(
expr_.Substring(start, (end) - (start)), backrefManager_, indicator
- start));
}
else
{
throw new NdnRegexMatcherBase.Error("Unexpected syntax");
}
next[0] = end;
return(true);
}
/// <summary>
/// Compile the regular expression to generate more matchers when necessary.
/// </summary>
///
protected internal override void compile()
{
NdnRegexMatcherBase matcher;
if ('(' == expr_[0])
{
matcher = new NdnRegexBackrefMatcher(
expr_.Substring(0, (indicator_) - (0)), backrefManager_);
backrefManager_.pushRef(matcher);
((NdnRegexBackrefMatcher)matcher).lateCompile();
}
else
{
matcher = new NdnRegexComponentSetMatcher(expr_.Substring(0, (indicator_) - (0)), backrefManager_);
}
ILOG.J2CsMapping.Collections.Collections.Add(matchers_, matcher);
parseRepetition();
}