-/* Source file current line is coming from. */
-extern char *input_filename;
+/* 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.
-/* Top-level source file. */
-extern char *main_input_filename;
+This file is part of GCC.
-/* Line number in current source file. */
-extern int lineno;
+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.
-/* Stream for reading from input file. */
-extern FILE *finput;
+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.
-struct file_stack
+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
{
- char *name;
- struct file_stack *next;
- int line;
- };
+ 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);
-/* Stack of currently pending input files.
- The line member is not accurate for the innermost file on the stack. */
-extern struct file_stack *input_file_stack;
+ hash_map <location_hash, string_concat *> *m_table;
+};
-/* Incremented on each change to input_file_stack. */
-extern int input_file_stack_tick;
+#endif
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