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1 | /*============================================================================= |
2 | Copyright (c) 2004 Vyacheslav E. Andrejev | |
3 | http://spirit.sourceforge.net/ | |
4 | ||
5 | Use, modification and distribution is subject to the Boost Software | |
6 | License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at | |
7 | http://www.boost.org/LICENSE_1_0.txt) | |
8 | =============================================================================*/ | |
9 | #include <iostream> | |
10 | ||
11 | #define PHOENIX_LIMIT 2 | |
12 | #define BOOST_SPIRIT_SELECT_LIMIT 2 | |
13 | #define BOOST_SPIRIT_RULE_SCANNERTYPE_LIMIT 2 | |
14 | ||
15 | #include <boost/spirit/include/classic_core.hpp> | |
16 | #include <boost/spirit/include/classic_lists.hpp> | |
17 | #include <boost/spirit/include/classic_select.hpp> | |
18 | ||
19 | using namespace BOOST_SPIRIT_CLASSIC_NS; | |
20 | using namespace std; | |
21 | ||
22 | struct format_grammar : public grammar<format_grammar> | |
23 | { | |
24 | template <typename ScannerT> | |
25 | struct definition | |
26 | { | |
27 | definition(format_grammar const& /*self*/) | |
28 | { | |
29 | descriptor_list = | |
30 | list_p(format_descriptor, ch_p(',')) | |
31 | ; | |
32 | ||
33 | format_descriptor = | |
34 | select_p(E_descriptor, EN_descriptor) | |
35 | ; | |
36 | ||
37 | E_descriptor = // E[w[.d][Ee]] | |
38 | lexeme_d | |
39 | [ | |
40 | (ch_p('E') - (str_p("EN"))) | |
41 | >> !( | |
42 | min_limit_d(1u)[uint_p] | |
43 | >> !(ch_p('.') >> uint_p) | |
44 | >> !(ch_p('E') >> min_limit_d(1u)[uint_p]) | |
45 | ) | |
46 | ] | |
47 | ; | |
48 | ||
49 | EN_descriptor = // EN[w[.d][Ee]] | |
50 | lexeme_d | |
51 | [ | |
52 | str_p("EN") | |
53 | >> !( | |
54 | min_limit_d(1u)[uint_p] | |
55 | >> !(ch_p('.') >> uint_p) | |
56 | >> !(ch_p('E') >> min_limit_d(1u)[uint_p]) | |
57 | ) | |
58 | ] | |
59 | ; | |
60 | } | |
61 | ||
62 | rule<ScannerT> descriptor_list; | |
63 | rule<ScannerT> format_descriptor; | |
64 | rule<ScannerT> E_descriptor; | |
65 | rule<ScannerT> EN_descriptor; | |
66 | ||
67 | rule<ScannerT> const& start() const | |
68 | { | |
69 | return descriptor_list; | |
70 | } | |
71 | }; | |
72 | }; | |
73 | ||
11fdf7f2 | 74 | int main() |
7c673cae FG |
75 | { |
76 | format_grammar grammar; | |
77 | const char* format = "E2, EN15.7, E20.10E3, E, EN"; | |
78 | ||
79 | parse_info<> pi = parse(format, grammar, blank_p); | |
80 | ||
81 | if (pi.full) { | |
82 | cout << "Test concluded successful" << endl; | |
83 | return 0; | |
84 | } | |
85 | else { | |
86 | BOOST_SPIRIT_ASSERT(false); // Test fails | |
87 | return -1; | |
88 | } | |
89 | } |