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Diffstat (limited to 'soltools/mkdepend/cppsetup.c')
| -rw-r--r-- | soltools/mkdepend/cppsetup.c | 214 |
1 files changed, 214 insertions, 0 deletions
diff --git a/soltools/mkdepend/cppsetup.c b/soltools/mkdepend/cppsetup.c new file mode 100644 index 000000000..e731e9fb4 --- /dev/null +++ b/soltools/mkdepend/cppsetup.c @@ -0,0 +1,214 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* $XConsortium: cppsetup.c,v 1.13 94/04/17 20:10:32 gildea Exp $ */ +/* + +Copyright (c) 1993, 1994 X Consortium + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in +all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN +AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN +CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + +Except as contained in this notice, the name of the X Consortium shall not be +used in advertising or otherwise to promote the sale, use or other dealings +in this Software without prior written authorization from the X Consortium. + +*/ + +#include <ctype.h> + +#include "def.h" + +#ifdef CPP +/* + * This file is strictly for the sake of cpy.y and yylex.c (if + * you indeed have the source for cpp). + */ +#define IB 1 +#define SB 2 +#define NB 4 +#define CB 8 +#define QB 16 +#define WB 32 +#define SALT '#' +#if pdp11 | vax | ns16000 | mc68000 | ibm032 +#define COFF 128 +#else +#define COFF 0 +#endif +/* + * These variables used by cpy.y and yylex.c + */ +extern char *outp, *inp, *newp, *pend; +extern char *ptrtab; +extern char fastab[]; +extern char slotab[]; + +/* + * cppsetup + */ +struct filepointer *currentfile; +struct inclist *currentinc; + +cppsetup(line, filep, inc) + char *line; + struct filepointer *filep; + struct inclist *inc; +{ + char *p, savec; + static boolean setupdone = FALSE; + boolean value; + + if (!setupdone) { + cpp_varsetup(); + setupdone = TRUE; + } + + currentfile = filep; + currentinc = inc; + inp = newp = line; + for (p=newp; *p; p++) + ; + + /* + * put a newline back on the end, and set up pend, etc. + */ + *p++ = '\n'; + savec = *p; + *p = '\0'; + pend = p; + + ptrtab = slotab+COFF; + *--inp = SALT; + outp=inp; + value = yyparse(); + *p = savec; + return value; +} + +pperror(tag, x0,x1,x2,x3,x4) + int tag,x0,x1,x2,x3,x4; +{ + warning("\"%s\", line %d: ", currentinc->i_file, currentfile->f_line); + warning(x0,x1,x2,x3,x4); +} + + +yyerror(s) + char *s; +{ + fatalerr("Fatal error: %s\n", s); +} +#else /* not CPP */ + +#include "ifparser.h" + +static const char * +my_if_errors (IfParser *ip, const char *cp, const char *expecting) +{ +#ifdef DEBUG_MKDEPEND + struct parse_data *pd = (struct parse_data *) ip->data; + int lineno = pd->filep->f_line; + char *filename = pd->inc->i_file; + char prefix[300]; + int prefixlen; + int i; + + sprintf (prefix, "\"%s\":%d", filename, lineno); + prefixlen = strlen(prefix); + fprintf (stderr, "%s: %s", prefix, pd->line); + i = cp - pd->line; + if (i > 0 && pd->line[i-1] != '\n') { + putc ('\n', stderr); + } + for (i += prefixlen + 3; i > 0; i--) { + putc (' ', stderr); + } + fprintf (stderr, "^--- expecting %s\n", expecting); +#endif /* DEBUG_MKDEPEND */ + (void)ip; + (void)cp; + (void)expecting; + return NULL; +} + + +#define MAXNAMELEN 256 + +static char * +lookup_variable (const char *var, size_t len) +{ + char tmpbuf[MAXNAMELEN + 1]; + + if (len > MAXNAMELEN) + return NULL; + + strncpy (tmpbuf, var, len); + tmpbuf[len] = '\0'; + return isdefined(tmpbuf); +} + + +static int +my_eval_defined (IfParser *ip, const char *var, size_t len) +{ + (void)ip; + if (lookup_variable (var, len)) + return 1; + else + return 0; +} + +#define isvarfirstletter(ccc) (isalpha((unsigned char)(ccc)) || (ccc) == '_') + +static int +my_eval_variable (IfParser *ip, const char *var, size_t len) +{ + char *s; + + (void)ip; + + s = lookup_variable (var, len); + if (!s) + return 0; + do { + var = s; + if (!isvarfirstletter(*var)) + break; + s = lookup_variable (var, strlen(var)); + } while (s); + + return atoi(var); +} + + +int cppsetup(char const *line) +{ + IfParser ip; + int val = 0; + + ip.funcs.handle_error = my_if_errors; + ip.funcs.eval_defined = my_eval_defined; + ip.funcs.eval_variable = my_eval_variable; + + (void) ParseIfExpression (&ip, line, &val); + if (val) + return IF; + else + return IFFALSE; +} +#endif /* CPP */ + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |