| /* Utilities for querying and manipulating type trees. |
| Copyright (C) 2013-2020 Free Software Foundation, Inc. |
| |
| This file is part of GCC. |
| |
| GCC is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 3, or (at your option) |
| any later version. |
| |
| GCC is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GCC; see the file COPYING3. If not see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #ifndef GCC_CP_TYPE_UTILS_H |
| #define GCC_CP_TYPE_UTILS_H |
| |
| /* Returns a pointer to the first tree within *TP that is directly matched by |
| PRED. *TP may be a type or PARM_DECL and is incrementally decomposed toward |
| its type-specifier until a match is found. NULL is returned if PRED does not |
| match any part of *TP. |
| |
| This is primarily intended for detecting whether *TP uses `auto' or a concept |
| identifier. Since either of these can only appear as a type-specifier for |
| the declaration in question, only top-level qualifications are traversed; |
| find_type_usage does not look through the whole type. */ |
| |
| inline tree * |
| find_type_usage (tree *tp, bool (*pred) (const_tree)) |
| { |
| tree t = *tp; |
| if (pred (t)) |
| return tp; |
| |
| enum tree_code code = TREE_CODE (t); |
| |
| if (code == POINTER_TYPE || code == REFERENCE_TYPE |
| || code == PARM_DECL || code == OFFSET_TYPE |
| || code == FUNCTION_TYPE || code == METHOD_TYPE |
| || code == ARRAY_TYPE) |
| return find_type_usage (&TREE_TYPE (t), pred); |
| |
| if (TYPE_PTRMEMFUNC_P (t)) |
| return find_type_usage |
| (&TREE_TYPE (TYPE_PTRMEMFUNC_FN_TYPE (t)), pred); |
| |
| return NULL; |
| } |
| |
| #endif // GCC_CP_TYPE_UTILS_H |
