projects / ceph.git / blame
| Commit | Line | Data |
|---|---|---|
| 7c673cae FG |
1 | [#source_position] |
| 2 | [section source_position] | |
| 3 | ||
| 4 | [h1 Synopsis] | |
| 5 | ||
| 6 | template <class Line, class Col, class PrevChar> | |
| 7 | struct source_position; | |
| 8 | ||
| 9 | This is a [link metaprogramming_value template metaprogramming value]. | |
| 10 | ||
| 11 | [table Arguments | |
| 12 | [[Name] [Type]] | |
| 13 | [[`Line`] [[link boxed_value boxed] integer value]] | |
| 14 | [[`Col`] [[link boxed_value boxed] integer value]] | |
| 15 | [[`PrevChar`] [[link boxed_value boxed] character value]] | |
| 16 | ] | |
| 17 | ||
| 18 | [h1 Description] | |
| 19 | ||
| 20 | Compile-time data-structure describing a position of the input text. | |
| 21 | ||
| 22 | The values of this data-structure store the last character that was parsed | |
| 23 | before reaching the position of the input described by the `source_position` | |
| 24 | value. | |
| 25 | ||
| 26 | Its tag is [link source_position_tag `source_position_tag`]. | |
| 27 | ||
| 28 | The beginning of the input text is represented by [link start `start`]. | |
| 29 | ||
| 30 | [h1 Header] | |
| 31 | ||
| 32 | #include <boost/metaparse/source_position.hpp> | |
| 33 | ||
| 34 | [h1 Expression semantics] | |
| 35 | ||
| 36 | For any `l`, `c` compile-time boxed integral values and `p` compile-time boxed | |
| 37 | character value, the following are equivalent | |
| 38 | ||
| 39 | get_col<source_position<l, c, p>>::type | |
| 40 | c::type | |
| 41 | ||
| 42 | get_line<source_position<l, c, p>>::type | |
| 43 | l::type | |
| 44 | ||
| 45 | get_prev_char<source_position<l, c, p>>::type | |
| 46 | p::type | |
| 47 | ||
| 48 | [h1 Constant values of this type] | |
| 49 | ||
| 50 | * [link start `start`] | |
| 51 | ||
| 52 | [h1 Operations] | |
| 53 | ||
| 54 | * `boost::mpl::equal_to` | |
| 55 | * `boost::mpl::greater` | |
| 56 | * `boost::mpl::greater_equal` | |
| 57 | * `boost::mpl::less` | |
| 58 | * `boost::mpl::less_equal` | |
| 59 | * `boost::mpl::not_equal_to` | |
| 60 | * [link get_col `get_col`] | |
| 61 | * [link get_line `get_line`] | |
| 62 | * [link get_prev_char `get_prev_char`] | |
| 63 | * [link next_char `next_char`] | |
| 64 | * [link next_line `next_line`] | |
| 65 | ||
| 66 | [endsect] | |
| 67 |