When I do
import tango.io.Stdout;
import tango.text.Regex;
void main()
{
foreach(m; Regex("b").search("abcdefghijklmnopqrstumwxyz"))
{
Stdout.formatln("{}[{}]{}", m.pre, m.match(0), m.post);
Stdout.formatln("{}[{}]{}", m.pre, m.match(1), m.post);
Stdout.formatln("{}[{}]{}", m.pre, m.match(2), m.post);
Stdout.formatln("{}[{}]{}", m.pre, m.match(3), m.post);
Stdout.formatln("{}[{}]{}", m.pre, m.match(4), m.post);
}
}
I get
tango.core.Exception.ArrayBoundsException@tango/text/Regex.d(3985): Array index out of bounds
so I try modify RegExpT.match like this:
char_t[] match(uint index)
{
// fix it
// if ( index > tdfa_.num_tags )
if ( index >= tdfa_.num_tags )
return null;
int start = last_start_+registers_[index*2],
end = last_start_+registers_[index*2+1];
if ( start >= 0 && start < end && end <= input_.length )
return input_[start .. end];
return null;
}
It is OK.
