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1[#repeated_reject_incomplete1]
2[section repeated_reject_incomplete1]
3
4[h1 Synopsis]
5
6  template <class P>
7  struct repeated_reject_incomplete1;
8
9This is a [link parser_combinator parser combinator].
10
11[table Arguments
12  [[Name] [Type]]
13  [[`P`]  [[link parser parser]]]
14]
15
16[h1 Description]
17
18The same as [link repeated1 `repeated1`], but once `P` rejects the input,
19`repeated_reject_incomplete1` checks if `P` consumes any characters before
20rejecting the input. If so, `repeated_reject_incomplete1` rejects the input with
21the same error message this last application of `P` returned. Otherwise
22_reject_incomplete`repeated1` accepts the input and gives the same result as
23[link repeated1 `repeated1`].
24
25[h1 Header]
26
27  #include <boost/metaparse/repeated_reject_incomplete1.hpp>
28
29[h1 Expression semantics]
30
31For any  `p` parser, `s` compile-time string and `pos` source position
32
33  repeated_reject_incomplete1<p>::apply<s, pos>
34
35is equivalent to
36
37  first_of<repeated1<p>, fail_at_first_char_expected<p> >::apply<s, pos>
38
39[h1 Example]
40
41  #include <boost/metaparse/repeated_reject_incomplete1.hpp>
42  #include <boost/metaparse/lit_c.hpp>
43  #include <boost/metaparse/last_of.hpp>
44  #include <boost/metaparse/token.hpp>
45  #include <boost/metaparse/int_.hpp>
46  #include <boost/metaparse/string.hpp>
47  #include <boost/metaparse/start.hpp>
48  #include <boost/metaparse/get_result.hpp>
49  #include <boost/metaparse/is_error.hpp>
50
51  #include <boost/mpl/equal.hpp>
52  #include <boost/mpl/vector_c.hpp>
53
54  using namespace boost::metaparse;
55
56  using int_token = token<int_>;
57  using plus_token = token<lit_c<'+'>>;
58  using plus_int = last_of<plus_token, int_token>;
59
60  using ints = repeated_reject_incomplete1<plus_int>;
61
62  static_assert(
63    boost::mpl::equal<
64      boost::mpl::vector_c<int, 13, 3, 21>,
65      get_result<
66        ints::apply<BOOST_METAPARSE_STRING("+ 13 + 3 + 21"), start>
67      >::type
68    >::type::value,
69    "ints should parse the numbers"
70  );
71
72  static_assert(
73    is_error<
74      ints::apply<BOOST_METAPARSE_STRING("+ 13 + 3 +"), start>
75    >::type::value,
76    "when the last number is missing, it should be an error"
77  );
78
79  static_assert(
80    is_error<ints::apply<BOOST_METAPARSE_STRING(""), start>>::type::value,
81    "when no numbers are provided, it should be an error"
82  );
83
84[endsect]
85
86