1/*=============================================================================
2 Copyright (c) 2001-2014 Joel de Guzman
3
4 Distributed under the Boost Software License, Version 1.0. (See accompanying
5 file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
6==============================================================================*/
7#if !defined(BOOST_SPIRIT_X3_INT_APR_17_2006_0830AM)
8#define BOOST_SPIRIT_X3_INT_APR_17_2006_0830AM
9
10#include <boost/spirit/home/x3/core/parser.hpp>
11#include <boost/spirit/home/x3/core/skip_over.hpp>
12#include <boost/spirit/home/x3/support/numeric_utils/extract_int.hpp>
13#include <cstdint>
14
15namespace boost { namespace spirit { namespace x3
16{
17 ///////////////////////////////////////////////////////////////////////////
18 template <
19 typename T
20 , unsigned Radix = 10
21 , unsigned MinDigits = 1
22 , int MaxDigits = -1>
23 struct int_parser : parser<int_parser<T, Radix, MinDigits, MaxDigits>>
24 {
25 // check template parameter 'Radix' for validity
26 static_assert(
27 (Radix == 2 || Radix == 8 || Radix == 10 || Radix == 16),
28 "Error Unsupported Radix");
29
30 typedef T attribute_type;
31 static bool const has_attribute = true;
32
33 template <typename Iterator, typename Context, typename Attribute>
34 bool parse(Iterator& first, Iterator const& last
35 , Context const& context, unused_type, Attribute& attr) const
36 {
37 typedef extract_int<T, Radix, MinDigits, MaxDigits> extract;
38 x3::skip_over(first, last, context);
39 return extract::call(first, last, attr);
40 }
41 };
42
43#define BOOST_SPIRIT_X3_INT_PARSER(int_type, name) \
44 typedef int_parser<int_type> name##type; \
45 constexpr name##type name = {}; \
46 /***/
47
48 BOOST_SPIRIT_X3_INT_PARSER(long, long_)
49 BOOST_SPIRIT_X3_INT_PARSER(short, short_)
50 BOOST_SPIRIT_X3_INT_PARSER(int, int_)
51 BOOST_SPIRIT_X3_INT_PARSER(long long, long_long)
52
53 BOOST_SPIRIT_X3_INT_PARSER(int8_t, int8)
54 BOOST_SPIRIT_X3_INT_PARSER(int16_t, int16)
55 BOOST_SPIRIT_X3_INT_PARSER(int32_t, int32)
56 BOOST_SPIRIT_X3_INT_PARSER(int64_t, int64)
57
58#undef BOOST_SPIRIT_X3_INT_PARSER
59
60}}}
61
62#endif
63

source code of boost/libs/spirit/include/boost/spirit/home/x3/numeric/int.hpp