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// Copyright (c) 2001-2010 Hartmut Kaiser
// Copyright (c) 2010 Sergey "GooRoo" Olendarenko
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
#include <boost/detail/lightweight_test.hpp>
#include <boost/config/warning_disable.hpp>
#include <cstdlib>
#include <iostream>
#include <locale>
#include <string>
#include <boost/spirit/include/lex_lexertl.hpp>
#include <boost/spirit/include/phoenix_function.hpp>
#include <boost/spirit/include/phoenix_operator.hpp>
namespace lex = boost::spirit::lex;
namespace phoenix = boost::phoenix;
typedef std::basic_string<wchar_t> wstring_type;
///////////////////////////////////////////////////////////////////////////////
enum tokenids
{
ID_IDENT = 1,
ID_CONSTANT,
ID_OPERATION,
ID_BRACKET
};
///////////////////////////////////////////////////////////////////////////////
struct test_data
{
tokenids tokenid;
wstring_type value;
};
// alpha+x1*(2.836-x2[i])
test_data data[] =
{
{ ID_IDENT, L"alpha" },
{ ID_OPERATION, L"+" },
{ ID_IDENT, L"x1" },
{ ID_OPERATION, L"*" },
{ ID_BRACKET, L"(" },
{ ID_CONSTANT, L"2.836" },
{ ID_OPERATION, L"-" },
{ ID_IDENT, L"x2" },
{ ID_BRACKET, L"[" },
{ ID_IDENT, L"i" },
{ ID_BRACKET, L"]" },
{ ID_BRACKET, L")" }
};
///////////////////////////////////////////////////////////////////////////////
struct test_impl
{
typedef void result_type;
template <typename TokenId, typename Value>
struct result { typedef void type; };
template <typename TokenId, typename Value>
void operator()(TokenId const& tokenid, Value const& val) const
{
BOOST_TEST(sequence_counter < sizeof(data)/sizeof(data[0]));
BOOST_TEST(data[sequence_counter].tokenid == tokenids(tokenid));
BOOST_TEST(0 == val.which());
typedef boost::iterator_range<wstring_type::iterator> iterator_range;
iterator_range r = boost::get<iterator_range>(val);
BOOST_TEST(data[sequence_counter].value ==
wstring_type(r.begin(), r.end()));
++sequence_counter;
}
static std::size_t sequence_counter;
};
std::size_t test_impl::sequence_counter = 0;
phoenix::function<test_impl> const test = test_impl();
///////////////////////////////////////////////////////////////////////////////
template <typename Lexer>
struct mega_tokens : lex::lexer<Lexer>
{
mega_tokens()
: identifier(L"[a-zA-Z_][a-zA-Z0-9_]*", ID_IDENT)
, constant (L"[0-9]+(\\.[0-9]+)?", ID_CONSTANT)
, operation (L"[\\+\\-\\*/]", ID_OPERATION)
, bracket (L"[\\(\\)\\[\\]]", ID_BRACKET)
{
using lex::_tokenid;
using lex::_val;
this->self
= operation [ test(_tokenid, _val) ]
| identifier [ test(_tokenid, _val) ]
| constant [ test(_tokenid, _val) ]
| bracket [ test(_tokenid, _val) ]
;
}
lex::token_def<wstring_type, wchar_t, tokenids> identifier;
lex::token_def<double, wchar_t, tokenids> constant;
lex::token_def<wchar_t, wchar_t, tokenids> operation;
lex::token_def<wchar_t, wchar_t, tokenids> bracket;
};
///////////////////////////////////////////////////////////////////////////////
int main()
{
typedef wstring_type::iterator base_iterator;
typedef lex::lexertl::token<
base_iterator, boost::mpl::vector<wchar_t, wstring_type, double>
, boost::mpl::true_, tokenids
> token_type;
typedef lex::lexertl::actor_lexer<token_type> lexer_type;
mega_tokens<lexer_type> mega_lexer;
wstring_type exampleStr = L"alpha+x1*(2.836-x2[i])";
base_iterator first = exampleStr.begin();
BOOST_TEST(lex::tokenize(first, exampleStr.end(), mega_lexer));
BOOST_TEST(test_impl::sequence_counter == sizeof(data)/sizeof(data[0]));
return boost::report_errors();
}
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