55 lines
1.5 KiB
Plaintext
55 lines
1.5 KiB
Plaintext
[#accept]
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[section accept]
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[h1 Synopsis]
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template <class Result, class Remaining, class Pos>
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struct accept;
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This is a [link metaprogramming_value template metaprogramming value].
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[table Arguments
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[[Name] [Type]]
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[[`Result`] [[link metaprogramming_value template metaprogramming value]]]
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[[`Remaining`] [[link string string]]]
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[[`Pos`] [[link source_position source position]]]
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]
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[h1 Description]
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Values representing a successful parser application. It behaves as a
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[link lazy_metafunction lazy template metafunction]: when it is evaluated as a
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metafunction, it returns itself with its arguments evaluated. See expression
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semantics for further details.
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[note
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Note that for backward compatibility when `Result::type` is not defined,
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`accept<....>::type` does not evaluate `Result`. For example
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`accept<int, BOOST_METAPARSE_STRING("foo"), start>::type` is
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`accept<int, BOOST_METAPARSE_STRING("foo")::type, start::type>`. Using types
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that are not template metaprogramming values as `Result` is deprecated and
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will not work in future versions of the library.
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]
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[h1 Expressions semantics]
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For any `r` template metaprogramming value, `s` compile-time string and `p`
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source position the following are equivalent:
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accept<r, s, p>::type
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accept<r, s::type, p::type>
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[h1 Header]
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#include <boost/metaparse/accept.hpp>
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[h1 Operations]
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* [link get_position `get_position`]
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* [link get_remaining `get_remaining`]
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* [link get_result `get_result`]
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[endsect]
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