| /* Declarations for variables relating to reading the source file. |
| Used by parsers, lexical analyzers, and error message routines. |
| Copyright (C) 1993-2019 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_INPUT_H |
| #define GCC_INPUT_H |
| |
| #include "line-map.h" |
| |
| extern GTY(()) struct line_maps *line_table; |
| extern GTY(()) struct line_maps *saved_line_table; |
| |
| /* A value which will never be used to represent a real location. */ |
| #define UNKNOWN_LOCATION ((location_t) 0) |
| |
| /* The location for declarations in "<built-in>" */ |
| #define BUILTINS_LOCATION ((location_t) 1) |
| |
| /* line-map.c reserves RESERVED_LOCATION_COUNT to the user. Ensure |
| both UNKNOWN_LOCATION and BUILTINS_LOCATION fit into that. */ |
| STATIC_ASSERT (BUILTINS_LOCATION < RESERVED_LOCATION_COUNT); |
| |
| extern bool is_location_from_builtin_token (location_t); |
| extern expanded_location expand_location (location_t); |
| |
| /* A class capturing the bounds of a buffer, to allow for run-time |
| bounds-checking in a checked build. */ |
| |
| class char_span |
| { |
| public: |
| char_span (const char *ptr, size_t n_elts) : m_ptr (ptr), m_n_elts (n_elts) {} |
| |
| /* Test for a non-NULL pointer. */ |
| operator bool() const { return m_ptr; } |
| |
| /* Get length, not including any 0-terminator (which may not be, |
| in fact, present). */ |
| size_t length () const { return m_n_elts; } |
| |
| const char *get_buffer () const { return m_ptr; } |
| |
| char operator[] (int idx) const |
| { |
| gcc_assert (idx >= 0); |
| gcc_assert ((size_t)idx < m_n_elts); |
| return m_ptr[idx]; |
| } |
| |
| char_span subspan (int offset, int n_elts) const |
| { |
| gcc_assert (offset >= 0); |
| gcc_assert (offset < (int)m_n_elts); |
| gcc_assert (n_elts >= 0); |
| gcc_assert (offset + n_elts <= (int)m_n_elts); |
| return char_span (m_ptr + offset, n_elts); |
| } |
| |
| char *xstrdup () const |
| { |
| return ::xstrndup (m_ptr, m_n_elts); |
| } |
| |
| private: |
| const char *m_ptr; |
| size_t m_n_elts; |
| }; |
| |
| extern char_span location_get_source_line (const char *file_path, int line); |
| |
| extern bool location_missing_trailing_newline (const char *file_path); |
| extern expanded_location |
| expand_location_to_spelling_point (location_t, |
| enum location_aspect aspect |
| = LOCATION_ASPECT_CARET); |
| extern location_t expansion_point_location_if_in_system_header (location_t); |
| extern location_t expansion_point_location (location_t); |
| |
| extern location_t input_location; |
| |
| #define LOCATION_FILE(LOC) ((expand_location (LOC)).file) |
| #define LOCATION_LINE(LOC) ((expand_location (LOC)).line) |
| #define LOCATION_COLUMN(LOC)((expand_location (LOC)).column) |
| #define LOCATION_LOCUS(LOC) \ |
| ((IS_ADHOC_LOC (LOC)) ? get_location_from_adhoc_loc (line_table, LOC) \ |
| : (LOC)) |
| #define LOCATION_BLOCK(LOC) \ |
| ((tree) ((IS_ADHOC_LOC (LOC)) ? get_data_from_adhoc_loc (line_table, (LOC)) \ |
| : NULL)) |
| #define RESERVED_LOCATION_P(LOC) \ |
| (LOCATION_LOCUS (LOC) < RESERVED_LOCATION_COUNT) |
| |
| /* Return a positive value if LOCATION is the locus of a token that is |
| located in a system header, O otherwise. It returns 1 if LOCATION |
| is the locus of a token that is located in a system header, and 2 |
| if LOCATION is the locus of a token located in a C system header |
| that therefore needs to be extern "C" protected in C++. |
| |
| Note that this function returns 1 if LOCATION belongs to a token |
| that is part of a macro replacement-list defined in a system |
| header, but expanded in a non-system file. */ |
| |
| static inline int |
| in_system_header_at (location_t loc) |
| { |
| return linemap_location_in_system_header_p (line_table, loc); |
| } |
| |
| /* Return true if LOCATION is the locus of a token that |
| comes from a macro expansion, false otherwise. */ |
| |
| static inline bool |
| from_macro_expansion_at (location_t loc) |
| { |
| return linemap_location_from_macro_expansion_p (line_table, loc); |
| } |
| |
| /* Return true if LOCATION is the locus of a token that comes from |
| a macro definition, false otherwise. This differs from from_macro_expansion_at |
| in its treatment of macro arguments, for which this returns false. */ |
| |
| static inline bool |
| from_macro_definition_at (location_t loc) |
| { |
| return linemap_location_from_macro_definition_p (line_table, loc); |
| } |
| |
| static inline location_t |
| get_pure_location (location_t loc) |
| { |
| return get_pure_location (line_table, loc); |
| } |
| |
| /* Get the start of any range encoded within location LOC. */ |
| |
| static inline location_t |
| get_start (location_t loc) |
| { |
| return get_range_from_loc (line_table, loc).m_start; |
| } |
| |
| /* Get the endpoint of any range encoded within location LOC. */ |
| |
| static inline location_t |
| get_finish (location_t loc) |
| { |
| return get_range_from_loc (line_table, loc).m_finish; |
| } |
| |
| extern location_t make_location (location_t caret, |
| location_t start, location_t finish); |
| extern location_t make_location (location_t caret, source_range src_range); |
| |
| void dump_line_table_statistics (void); |
| |
| void dump_location_info (FILE *stream); |
| |
| void diagnostics_file_cache_fini (void); |
| |
| void diagnostics_file_cache_forcibly_evict_file (const char *file_path); |
| |
| struct GTY(()) string_concat |
| { |
| string_concat (int num, location_t *locs); |
| |
| int m_num; |
| location_t * GTY ((atomic)) m_locs; |
| }; |
| |
| struct location_hash : int_hash <location_t, UNKNOWN_LOCATION> { }; |
| |
| class GTY(()) string_concat_db |
| { |
| public: |
| string_concat_db (); |
| void record_string_concatenation (int num, location_t *locs); |
| |
| bool get_string_concatenation (location_t loc, |
| int *out_num, |
| location_t **out_locs); |
| |
| private: |
| static location_t get_key_loc (location_t loc); |
| |
| /* For the fields to be private, we must grant access to the |
| generated code in gtype-desc.c. */ |
| |
| friend void ::gt_ggc_mx_string_concat_db (void *x_p); |
| friend void ::gt_pch_nx_string_concat_db (void *x_p); |
| friend void ::gt_pch_p_16string_concat_db (void *this_obj, void *x_p, |
| gt_pointer_operator op, |
| void *cookie); |
| |
| hash_map <location_hash, string_concat *> *m_table; |
| }; |
| |
| #endif |