| 1 | /* Some commonly-used VEC types. |
| 2 | |
| 3 | Copyright (C) 2012-2020 Free Software Foundation, Inc. |
| 4 | |
| 5 | This file is part of GDB. |
| 6 | |
| 7 | This program is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 3 of the License, or |
| 10 | (at your option) any later version. |
| 11 | |
| 12 | This program is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 19 | |
| 20 | #ifndef COMMON_GDB_VECS_H |
| 21 | #define COMMON_GDB_VECS_H |
| 22 | |
| 23 | /* Split STR, a list of DELIMITER-separated fields, into a char pointer vector. |
| 24 | |
| 25 | You may modify the returned strings. */ |
| 26 | |
| 27 | extern std::vector<gdb::unique_xmalloc_ptr<char>> |
| 28 | delim_string_to_char_ptr_vec (const char *str, char delimiter); |
| 29 | |
| 30 | /* Like dirnames_to_char_ptr_vec, but append the directories to *VECP. */ |
| 31 | |
| 32 | extern void dirnames_to_char_ptr_vec_append |
| 33 | (std::vector<gdb::unique_xmalloc_ptr<char>> *vecp, const char *dirnames); |
| 34 | |
| 35 | /* Split DIRNAMES by DIRNAME_SEPARATOR delimiter and return a list of all the |
| 36 | elements in their original order. For empty string ("") DIRNAMES return |
| 37 | list of one empty string ("") element. |
| 38 | |
| 39 | You may modify the returned strings. */ |
| 40 | |
| 41 | extern std::vector<gdb::unique_xmalloc_ptr<char>> |
| 42 | dirnames_to_char_ptr_vec (const char *dirnames); |
| 43 | |
| 44 | /* Remove the element pointed by iterator IT from VEC, not preserving the order |
| 45 | of the remaining elements. Return the removed element. */ |
| 46 | |
| 47 | template <typename T> |
| 48 | T |
| 49 | unordered_remove (std::vector<T> &vec, typename std::vector<T>::iterator it) |
| 50 | { |
| 51 | gdb_assert (it >= vec.begin () && it < vec.end ()); |
| 52 | |
| 53 | T removed = std::move (*it); |
| 54 | if (it != vec.end () - 1) |
| 55 | *it = std::move (vec.back ()); |
| 56 | vec.pop_back (); |
| 57 | |
| 58 | return removed; |
| 59 | } |
| 60 | |
| 61 | /* Remove the element at position IX from VEC, not preserving the order of the |
| 62 | remaining elements. Return the removed element. */ |
| 63 | |
| 64 | template <typename T> |
| 65 | T |
| 66 | unordered_remove (std::vector<T> &vec, typename std::vector<T>::size_type ix) |
| 67 | { |
| 68 | gdb_assert (ix < vec.size ()); |
| 69 | |
| 70 | return unordered_remove (vec, vec.begin () + ix); |
| 71 | } |
| 72 | |
| 73 | /* Remove the element at position IX from VEC, preserving the order the |
| 74 | remaining elements. Return the removed element. */ |
| 75 | |
| 76 | template <typename T> |
| 77 | T |
| 78 | ordered_remove (std::vector<T> &vec, typename std::vector<T>::size_type ix) |
| 79 | { |
| 80 | gdb_assert (ix < vec.size ()); |
| 81 | |
| 82 | T removed = std::move (vec[ix]); |
| 83 | vec.erase (vec.begin () + ix); |
| 84 | |
| 85 | return removed; |
| 86 | } |
| 87 | |
| 88 | #endif /* COMMON_GDB_VECS_H */ |