04c77c18ad
Remove procedural code that did the scanning, which was faulty and didn't support complex constants such as 0x1p-61. Replace it with a finite state machine expressed as a transition table. The table was rewritten by hand from lx's output, given parts of grammar expressed as regular expressions. lx is Katherine Flavel's lexer generator, currently available at https://github.com/katef/libfsm and the parts of grammar were taken from http://quut.com/c/ANSI-C-grammar-l-2011.html and extended to support binary integer constants which are a popular GCC extension. Reported by: bde
51 lines
1.9 KiB
C
51 lines
1.9 KiB
C
/*-
|
|
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
|
|
*
|
|
* Copyright (c) 2001 Jens Schweikhardt
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#if 0
|
|
__FBSDID("$FreeBSD$");
|
|
#endif
|
|
|
|
void add_typename(const char *);
|
|
void alloc_typenames(void);
|
|
int compute_code_target(void);
|
|
int compute_label_target(void);
|
|
int count_spaces(int, char *);
|
|
int count_spaces_until(int, char *, char *);
|
|
void init_constant_tt(void);
|
|
int lexi(struct parser_state *);
|
|
void diag2(int, const char *);
|
|
void diag3(int, const char *, int);
|
|
void diag4(int, const char *, int, int);
|
|
void dump_line(void);
|
|
void fill_buffer(void);
|
|
void parse(int);
|
|
void pr_comment(void);
|
|
void set_defaults(void);
|
|
void set_option(char *);
|
|
void set_profile(const char *);
|