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e73ac5a09b
* src/parse-gram.y (%pure-parser, %name-prefix): Replace with... (%define api.pure, %define api.prefix) * src/location.h, src/scan-gram.h: Adjust to api.prefix.
120 lines
3.1 KiB
C
120 lines
3.1 KiB
C
/* Locations for Bison
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Copyright (C) 2002, 2004-2012 Free Software Foundation, Inc.
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This file is part of Bison, the GNU Compiler Compiler.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#ifndef LOCATION_H_
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# define LOCATION_H_
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# include "uniqstr.h"
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/* A boundary between two characters. */
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typedef struct
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{
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/* The name of the file that contains the boundary. */
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uniqstr file;
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/* If nonnegative, the (origin-1) line that contains the boundary.
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If this is INT_MAX, the line number has overflowed.
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Meaningless and not displayed if negative.
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*/
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int line;
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/* If nonnegative, the (origin-1) column just after the boundary.
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This is neither a byte count, nor a character count; it is a
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column count. If this is INT_MAX, the column number has
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overflowed.
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Meaningless and not displayed if negative.
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*/
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int column;
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} boundary;
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/* Set the position of \a a. */
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static inline void
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boundary_set (boundary *b, const char *f, int l, int c)
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{
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b->file = f;
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b->line = l;
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b->column = c;
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}
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/* Return -1, 0, 1, depending whether a is before, equal, or
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after b. */
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static inline int
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boundary_cmp (boundary a, boundary b)
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{
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int res = strcmp (a.file, b.file);
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if (!res)
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res = a.line - b.line;
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if (!res)
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res = a.column - b.column;
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return res;
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}
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/* Return nonzero if A and B are equal boundaries. */
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static inline bool
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equal_boundaries (boundary a, boundary b)
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{
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return (a.column == b.column
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&& a.line == b.line
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&& UNIQSTR_EQ (a.file, b.file));
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}
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/* A location, that is, a region of source code. */
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typedef struct
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{
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/* Boundary just before the location starts. */
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boundary start;
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/* Boundary just after the location ends. */
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boundary end;
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} location;
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#define GRAM_LTYPE location
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#define EMPTY_LOCATION_INIT {{NULL, 0, 0}, {NULL, 0, 0}}
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extern location const empty_location;
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/* Set *LOC and adjust scanner cursor to account for token TOKEN of
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size SIZE. */
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void location_compute (location *loc,
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boundary *cur, char const *token, size_t size);
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/* Print location to file. Return number of actually printed
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characters. */
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unsigned location_print (FILE *out, location loc);
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/* Return -1, 0, 1, depending whether a is before, equal, or
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after b. */
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static inline int
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location_cmp (location a, location b)
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{
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int res = boundary_cmp (a.start, b.start);
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if (!res)
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res = boundary_cmp (a.end, b.end);
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return res;
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}
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/* LOC_STR must be formatted as `file:line.column', it will be modified. */
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void boundary_set_from_string (boundary *bound, char *loc_str);
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#endif /* ! defined LOCATION_H_ */
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