1 /* $XConsortium: cppsetup.c,v 1.13 94/04/17 20:10:32 gildea Exp $ */
4 Copyright (c) 1993, 1994 X Consortium
6 Permission is hereby granted, free of charge, to any person obtaining a copy
7 of this software and associated documentation files (the "Software"), to deal
8 in the Software without restriction, including without limitation the rights
9 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 copies of the Software, and to permit persons to whom the Software is
11 furnished to do so, subject to the following conditions:
13 The above copyright notice and this permission notice shall be included in
14 all copies or substantial portions of the Software.
16 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19 X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
20 AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
21 CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
23 Except as contained in this notice, the name of the X Consortium shall not be
24 used in advertising or otherwise to promote the sale, use or other dealings
25 in this Software without prior written authorization from the X Consortium.
30 #pragma warning(disable : 4996)
40 * This file is strictly for the sake of cpy.y and yylex.c (if
41 * you indeed have the source for cpp).
50 #if pdp11 | vax | ns16000 | mc68000 | ibm032
56 * These variables used by cpy.y and yylex.c
58 extern char *outp, *inp, *newp, *pend;
66 struct filepointer *currentfile;
69 int cppsetup(register char *line, register struct filepointer *filep,
70 register inclist *inc)
72 register char *p, savec;
73 static bool setupdone = false;
88 * put a newline back on the end, and set up pend, etc.
103 struct symtab *lookup(char *symbol)
105 static struct symtab undefined;
108 sp = isdefined(symbol, currentinc, NULL);
116 int pperror(int tag, int x0, int x1, int x2, int x3, int x4)
118 warning("\"%s\", line %d: ", currentinc->i_file, currentfile->f_line);
119 warning(x0,x1,x2,x3,x4);
123 int yyerror(register char *s)
125 fatalerr("Fatal error: %s\n", s);
130 #include "ifparser.h"
135 struct filepointer *filep;
140 static const char *_my_if_errors(IfParser *ip, const char *cp,
141 const char *expecting)
143 struct _parse_data *pd = (struct _parse_data *) ip->data;
144 int lineno = pd->filep->f_line;
145 char *filename = pd->inc->i_file;
150 sprintf (prefix, "\"%s\":%d", filename, lineno);
151 prefixlen = int(strlen(prefix));
152 fprintf (stderr, "%s: %s", prefix, pd->line);
153 i = int(cp - pd->line);
154 if (i > 0 && pd->line[i-1] != '\n') {
157 for (i += prefixlen + 3; i > 0; i--) {
160 fprintf (stderr, "^--- expecting %s\n", expecting);
165 #define MAXNAMELEN 256
167 static struct symtab *_lookup_variable(IfParser *ip, const char *var, int len)
169 char tmpbuf[MAXNAMELEN + 1];
170 struct _parse_data *pd = (struct _parse_data *) ip->data;
172 if (len > MAXNAMELEN)
175 strncpy (tmpbuf, var, len);
177 return isdefined (tmpbuf, pd->inc, NULL);
181 static int _my_eval_defined(IfParser *ip, const char *var, int len)
183 if (_lookup_variable (ip, var, len)) return 1;
187 #define isvarfirstletter(ccc) (isalpha(ccc) || (ccc) == '_')
189 static int _my_eval_variable(IfParser *ip, const char *var, int len)
193 s = _lookup_variable (ip, var, len);
198 if (!isvarfirstletter(*var))
200 s = _lookup_variable (ip, var, int(strlen(var)));
207 int cppsetup(register char *line, register struct filepointer *filep,
208 register inclist *inc)
211 struct _parse_data pd;
217 ip.funcs.handle_error = _my_if_errors;
218 ip.funcs.eval_defined = _my_eval_defined;
219 ip.funcs.eval_variable = _my_eval_variable;
220 ip.data = (char *) &pd;
222 (void) ParseIfExpression (&ip, line, &val);