+++ /dev/null
-/* Map logical line numbers to (source file, line number) pairs.
- Copyright (C) 2001, 2003, 2004
- Free Software Foundation, Inc.
-
-This program 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 2, or (at your option) any
-later version.
-
-This program 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 this program; if not, write to the Free Software
-Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-
- In other words, you are welcome to use, share and improve this program.
- You are forbidden to forbid anyone else to use, share and improve
- what you give them. Help stamp out software-hoarding! */
-
-#ifndef LIBCPP_LINE_MAP_H
-#define LIBCPP_LINE_MAP_H
-
-/* Reason for adding a line change with add_line_map (). LC_ENTER is
- when including a new file, e.g. a #include directive in C.
- LC_LEAVE is when reaching a file's end. LC_RENAME is when a file
- name or line number changes for neither of the above reasons
- (e.g. a #line directive in C). */
-enum lc_reason {LC_ENTER = 0, LC_LEAVE, LC_RENAME};
-
-/* A logical line/column number, i.e. an "index" into a line_map. */
-/* Long-term, we want to use this to replace struct location_s (in input.h),
- and effectively typedef source_location location_t. */
-typedef unsigned int source_location;
-
-/* Physical source file TO_FILE at line TO_LINE at column 0 is represented
- by the logical START_LOCATION. TO_LINE+L at column C is represented by
- START_LOCATION+(L*(1<<column_bits))+C, as long as C<(1<<column_bits),
- and the result_location is less than the next line_map's start_location.
- (The top line is line 1 and the leftmost column is column 1; line/column 0
- means "entire file/line" or "unknown line/column" or "not applicable".)
- INCLUDED_FROM is an index into the set that gives the line mapping
- at whose end the current one was included. File(s) at the bottom
- of the include stack have this set to -1. REASON is the reason for
- creation of this line map, SYSP is one for a system header, two for
- a C system header file that therefore needs to be extern "C"
- protected in C++, and zero otherwise. */
-struct line_map
-{
- const char *to_file;
- unsigned int to_line;
- source_location start_location;
- int included_from;
- ENUM_BITFIELD (lc_reason) reason : CHAR_BIT;
- /* The sysp field isn't really needed now that it's in cpp_buffer. */
- unsigned char sysp;
- /* Number of the low-order source_location bits used for a column number. */
- unsigned int column_bits : 8;
-};
-
-/* A set of chronological line_map structures. */
-struct line_maps
-{
- struct line_map *maps;
- unsigned int allocated;
- unsigned int used;
-
- unsigned int cache;
-
- /* The most recently listed include stack, if any, starts with
- LAST_LISTED as the topmost including file. -1 indicates nothing
- has been listed yet. */
- int last_listed;
-
- /* Depth of the include stack, including the current file. */
- unsigned int depth;
-
- /* If true, prints an include trace a la -H. */
- bool trace_includes;
-
- /* Highest source_location "given out". */
- source_location highest_location;
-
- /* Start of line of highest source_location "given out". */
- source_location highest_line;
-
- /* The maximum column number we can quickly allocate. Higher numbers
- may require allocating a new line_map. */
- unsigned int max_column_hint;
-};
-
-/* Initialize a line map set. */
-extern void linemap_init (struct line_maps *);
-
-/* Free a line map set. */
-extern void linemap_free (struct line_maps *);
-
-/* Check for and warn about line_maps entered but not exited. */
-
-extern void linemap_check_files_exited (struct line_maps *);
-
-/* Return a source_location for the start (i.e. column==0) of
- (physical) line TO_LINE in the current source file (as in the
- most recent linemap_add). MAX_COLUMN_HINT is the highest column
- number we expect to use in this line (but it does not change
- the highest_location). */
-
-extern source_location linemap_line_start
-(struct line_maps *set, unsigned int to_line, unsigned int max_column_hint);
-
-/* Add a mapping of logical source line to physical source file and
- line number.
-
- The text pointed to by TO_FILE must have a lifetime
- at least as long as the final call to lookup_line (). An empty
- TO_FILE means standard input. If reason is LC_LEAVE, and
- TO_FILE is NULL, then TO_FILE, TO_LINE and SYSP are given their
- natural values considering the file we are returning to.
-
- A call to this function can relocate the previous set of
- maps, so any stored line_map pointers should not be used. */
-extern const struct line_map *linemap_add
- (struct line_maps *, enum lc_reason, unsigned int sysp,
- const char *to_file, unsigned int to_line);
-
-/* Given a logical line, returns the map from which the corresponding
- (source file, line) pair can be deduced. */
-extern const struct line_map *linemap_lookup
- (struct line_maps *, source_location);
-
-/* Print the file names and line numbers of the #include commands
- which led to the map MAP, if any, to stderr. Nothing is output if
- the most recently listed stack is the same as the current one. */
-extern void linemap_print_containing_files (struct line_maps *,
- const struct line_map *);
-
-/* Converts a map and a source_location to source line. */
-#define SOURCE_LINE(MAP, LINE) \
- ((((LINE) - (MAP)->start_location) >> (MAP)->column_bits) + (MAP)->to_line)
-
-#define SOURCE_COLUMN(MAP, LINE) \
- (((LINE) - (MAP)->start_location) & ((1 << (MAP)->column_bits) - 1))
-
-/* Returns the last source line within a map. This is the (last) line
- of the #include, or other directive, that caused a map change. */
-#define LAST_SOURCE_LINE(MAP) \
- SOURCE_LINE (MAP, LAST_SOURCE_LINE_LOCATION (MAP))
-#define LAST_SOURCE_LINE_LOCATION(MAP) \
- ((((MAP)[1].start_location - 1 - (MAP)->start_location) \
- & ~((1 << (MAP)->column_bits) - 1)) \
- + (MAP)->start_location)
-
-/* Returns the map a given map was included from. */
-#define INCLUDED_FROM(SET, MAP) (&(SET)->maps[(MAP)->included_from])
-
-/* Nonzero if the map is at the bottom of the include stack. */
-#define MAIN_FILE_P(MAP) ((MAP)->included_from < 0)
-
-/* Set LOC to a source position that is the same line as the most recent
- linemap_line_start, but with the specified TO_COLUMN column number. */
-
-#define LINEMAP_POSITION_FOR_COLUMN(LOC, SET, TO_COLUMN) { \
- unsigned int to_column = (TO_COLUMN); \
- struct line_maps *set = (SET); \
- if (__builtin_expect (to_column >= set->max_column_hint, 0)) \
- (LOC) = linemap_position_for_column (set, to_column); \
- else { \
- source_location r = set->highest_line; \
- r = r + to_column; \
- if (r >= set->highest_location) \
- set->highest_location = r; \
- (LOC) = r; \
- }}
-
-
-extern source_location
-linemap_position_for_column (struct line_maps *set, unsigned int to_column);
-#endif /* !LIBCPP_LINE_MAP_H */
projects / fw / sdcc / blobdiff