1 /* scan.c - Utility functions for scan-decls and patch-header programs.
2 Copyright (C) 1993 Free Software Foundation, Inc.
4 This program is free software; you can redistribute it and/or modify it
5 under the terms of the GNU General Public License as published by the
6 Free Software Foundation; either version 2, or (at your option) any
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
22 int source_lineno = 1;
23 sstring source_filename;
26 make_sstring_space (str, count)
30 int cur_pos = str->ptr - str->base;
31 int cur_size = str->limit - str->base;
32 int new_size = cur_pos + count + 100;
34 if (new_size <= cur_size)
37 if (str->base == NULL)
38 str->base = xmalloc (new_size);
40 str->base = xrealloc (str->base, new_size);
41 str->ptr = str->base + cur_size;
42 str->limit = str->base + new_size;
46 sstring_append (dst, src)
51 register count = SSTRING_LENGTH(src);
52 MAKE_SSTRING_SPACE(dst, count + 1);
55 while (--count >= 0) *d++ = *s++;
69 register char *ptr = (char *) malloc (size);
70 if (ptr != 0) return (ptr);
82 register char *ptr = (char *) realloc (old, size);
83 if (ptr != 0) return (ptr);
96 if (isalpha(c) || c == '_')
102 if (c == EOF || !(isalnum(c) || c == '_'))
106 MAKE_SSTRING_SPACE(s, 1);
112 scan_string (fp, s, init)
120 if (c == EOF || c == '\n')
137 MAKE_SSTRING_SPACE(s, 1);
142 /* Skip horizontal white spaces (spaces, tabs, and C-style comments). */
151 if (c == ' ' || c == '\t')
169 source_lineno++, lineno++;
172 else if ((c = getc (fp)) == '/')
183 read_upto (fp, str, delim)
192 if (ch == EOF || ch == delim)
194 SSTRING_PUT(str, ch);
196 MAKE_SSTRING_SPACE(str, 1);
211 c = skip_spaces (fp, c);
220 c = get_token (fp, s);
223 source_lineno = atoi (s->base);
224 get_token (fp, &source_filename);
243 } while (c != EOF && isdigit(c));
248 if (isalpha (c) || c == '_')
250 c = scan_ident (fp, s, c);
252 return IDENTIFIER_TOKEN;
254 if (c == '\'' || c == '"')
257 c = scan_string (fp, s, c);
259 return c == '\'' ? CHAR_TOKEN : STRING_TOKEN;
263 MAKE_SSTRING_SPACE(s, 1);
273 /* Replace this with something faster/better! FIXME! */
274 while (*str) h = (h << 3) + *str++;
275 return h & 0x7FFFFFFF;