Use of unicode predefined character classes in Boost Spirit - boost

Question

I am trying to use the letter character class from unicode i.e. \p{L} with Boost Spirit but I have no luck so far. Below is an example where I am trying to use (on line 30) the \p{L} character class. When I replace line 30 with line 29 it works but that is not the intended use as I need any letter from Unicode in my example.
My use case is for UTF8 only. At the end of they day what I am trying to do here is substract a unicode range from all unicode letters when using boost-spirit lexer.
PS
Of course, my example is trimmed down and may not make a lot of sense as a use case but I hope you get the idea.
#include <boost/config/warning_disable.hpp>
#include <boost/spirit/include/lex_lexertl.hpp>
#include <boost/fusion/include/std_pair.hpp>
#include <iostream>
#include <fstream>
#include <chrono>
#include <vector>
using namespace boost;
using namespace boost::spirit;
using namespace std;
using namespace std::chrono;
std::vector<pair<string, string> > getTokenMacros() {
std::vector<pair<string, string> > tokenDefinitionsVector;
tokenDefinitionsVector.emplace_back("JAPANESE_HIRAGANA", "[\u3041-\u3096]");
tokenDefinitionsVector.emplace_back("JAPANESE_HIRAGANA1",
"[\u3099-\u309E]");
tokenDefinitionsVector.emplace_back("ASIAN_NWS", "{JAPANESE_HIRAGANA}|"
"{JAPANESE_HIRAGANA1}");
tokenDefinitionsVector.emplace_back("ASIAN_NWS_WORD", "{ASIAN_NWS}*");
//tokenDefinitionsVector.emplace_back("NON_ASIAN_LETTER", "[A-Za-z0-9]");
tokenDefinitionsVector.emplace_back("NON_ASIAN_LETTER", "[\\p{L}-[{ASIAN_NWS}]]");
tokenDefinitionsVector.emplace_back("WORD", "{NON_ASIAN_LETTER}+");
tokenDefinitionsVector.emplace_back("ANY", ".");
return tokenDefinitionsVector;
}
;
struct distance_func {
template<typename Iterator1, typename Iterator2>
struct result: boost::iterator_difference<Iterator1> {
};
template<typename Iterator1, typename Iterator2>
typename result<Iterator1, Iterator2>::type operator()(Iterator1& begin,
Iterator2& end) const {
return distance(begin, end);
}
};
boost::phoenix::function<distance_func> const distance_fctor = distance_func();
template<typename Lexer>
struct word_count_tokens: lex::lexer<Lexer> {
word_count_tokens() :
asianNwsWord("{ASIAN_NWS_WORD}", lex::min_token_id + 110), word(
"{WORD}", lex::min_token_id + 170), any("{ANY}",
lex::min_token_id + 3000) {
using lex::_start;
using lex::_end;
using boost::phoenix::ref;
std::vector<pair<string, string> > tokenMacros(getTokenMacros());
for (auto start = tokenMacros.begin(), end = tokenMacros.end();
start != end; start++) {
this->self.add_pattern(start->first, start->second);
}
this->self = asianNwsWord | word | any;
}
lex::token_def<> asianNwsWord, word, any;
};
int main(int argc, char* argv[]) {
typedef lex::lexertl::token<string::iterator> token_type;
typedef lex::lexertl::actor_lexer<token_type> lexer_type;
word_count_tokens<lexer_type> word_count_lexer;
// read in the file int memory
ifstream sampleFile("/home/dan/Documents/wikiSample.txt");
string str = "abc efg ぁあ";
string::iterator first = str.begin();
string::iterator last = str.end();
lexer_type::iterator_type iter = word_count_lexer.begin(first, last);
lexer_type::iterator_type end = word_count_lexer.end();
typedef boost::iterator_range<string::iterator> iterator_range;
vector<iterator_range> parsed_tokens;
while (iter != end && token_is_valid(*iter)) {
cout << (iter->id() - lex::min_token_id) << " " << iter->value()
<< endl;
const iterator_range range = get<iterator_range>(iter->value());
parsed_tokens.push_back(range);
++iter;
}
if (iter != end) {
string rest(first, last);
cout << endl << "!!!!!!!!!" << endl << "Lexical analysis failed\n"
<< "stopped at: \"" << rest << "\"" << endl;
cout << "#" << (int) rest.at(0) << "#" << endl;
}
return 0;
}