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01c66110e1
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
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2001 Jens Schweikhardt
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#if 0
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__FBSDID("$FreeBSD$");
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#endif
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void add_typename(const char *);
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void alloc_typenames(void);
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int compute_code_target(void);
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int compute_label_target(void);
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int count_spaces(int, char *);
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int count_spaces_until(int, char *, char *);
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void init_constant_tt(void);
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int lexi(struct parser_state *);
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void diag2(int, const char *);
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void diag3(int, const char *, int);
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void diag4(int, const char *, int, int);
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void dump_line(void);
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void fill_buffer(void);
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void parse(int);
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void pr_comment(void);
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void set_defaults(void);
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void set_option(char *);
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void set_profile(const char *);
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