+++ /dev/null
-/* $XConsortium: parse.c /main/33 1996/12/04 10:11:28 swick $ */
-/*
-
-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.
-
-*/
-/* $XFree86: xc/config/makedepend/parse.c,v 1.3 1997/01/12 10:39:45 dawes Exp $ */
-
-#include "def.h"
-
-extern char *directives[];
-extern struct inclist maininclist;
-
-int
-gobble(filep, file, file_red)
- register struct filepointer *filep;
- struct inclist *file, *file_red;
-{
- register char *line;
- register int type;
-
- while (line = x_getline(filep)) {
- switch(type = deftype(line, filep, file_red, file, FALSE)) {
- case IF:
- case IFFALSE:
- case IFGUESSFALSE:
- case IFDEF:
- case IFNDEF:
- type = gobble(filep, file, file_red);
- while ((type == ELIF) || (type == ELIFFALSE) ||
- (type == ELIFGUESSFALSE))
- type = gobble(filep, file, file_red);
- if (type == ELSE)
- (void)gobble(filep, file, file_red);
- break;
- case ELSE:
- case ENDIF:
- debug(0,("%s, line %d: #%s\n",
- file->i_file, filep->f_line,
- directives[type]));
- return(type);
- case DEFINE:
- case UNDEF:
- case INCLUDE:
- case INCLUDEDOT:
- case PRAGMA:
- case ERROR:
- case IDENT:
- case SCCS:
- case EJECT:
- case WARNING:
- break;
- case ELIF:
- case ELIFFALSE:
- case ELIFGUESSFALSE:
- return(type);
- case -1:
- warning("%s, line %d: unknown directive == \"%s\"\n",
- file_red->i_file, filep->f_line, line);
- break;
- }
- }
- return(-1);
-}
-
-/*
- * Decide what type of # directive this line is.
- */
-int deftype (line, filep, file_red, file, parse_it)
- register char *line;
- register struct filepointer *filep;
- register struct inclist *file_red, *file;
- int parse_it;
-{
- register char *p;
- char *directive, savechar;
- register int ret;
-
- /*
- * Parse the directive...
- */
- directive=line+1;
- while (*directive == ' ' || *directive == '\t')
- directive++;
-
- p = directive;
- while (*p >= 'a' && *p <= 'z')
- p++;
- savechar = *p;
- *p = '\0';
- ret = match(directive, directives);
- *p = savechar;
-
- /* If we don't recognize this compiler directive or we happen to just
- * be gobbling up text while waiting for an #endif or #elif or #else
- * in the case of an #elif we must check the zero_value and return an
- * ELIF or an ELIFFALSE.
- */
-
- if (ret == ELIF && !parse_it)
- {
- while (*p == ' ' || *p == '\t')
- p++;
- /*
- * parse an expression.
- */
- debug(0,("%s, line %d: #elif %s ",
- file->i_file, filep->f_line, p));
- ret = zero_value(p, filep, file_red);
- if (ret != IF)
- {
- debug(0,("false...\n"));
- if (ret == IFFALSE)
- return(ELIFFALSE);
- else
- return(ELIFGUESSFALSE);
- }
- else
- {
- debug(0,("true...\n"));
- return(ELIF);
- }
- }
-
- if (ret < 0 || ! parse_it)
- return(ret);
-
- /*
- * now decide how to parse the directive, and do it.
- */
- while (*p == ' ' || *p == '\t')
- p++;
- switch (ret) {
- case IF:
- /*
- * parse an expression.
- */
- ret = zero_value(p, filep, file_red);
- debug(0,("%s, line %d: %s #if %s\n",
- file->i_file, filep->f_line, ret?"false":"true", p));
- break;
- case IFDEF:
- case IFNDEF:
- debug(0,("%s, line %d: #%s %s\n",
- file->i_file, filep->f_line, directives[ret], p));
- case UNDEF:
- /*
- * separate the name of a single symbol.
- */
- while (isalnum(*p) || *p == '_')
- *line++ = *p++;
- *line = '\0';
- break;
- case INCLUDE:
- debug(2,("%s, line %d: #include %s\n",
- file->i_file, filep->f_line, p));
-
- /* Support ANSI macro substitution */
- {
- struct symtab **sym = isdefined(p, file_red, NULL);
- while (sym) {
- p = (*sym)->s_value;
- debug(3,("%s : #includes SYMBOL %s = %s\n",
- file->i_incstring,
- (*sym) -> s_name,
- (*sym) -> s_value));
- /* mark file as having included a 'soft include' */
- file->i_flags |= INCLUDED_SYM;
- sym = isdefined(p, file_red, NULL);
- }
- }
-
- /*
- * Separate the name of the include file.
- */
- while (*p && *p != '"' && *p != '<')
- p++;
- if (! *p)
- return(-2);
- if (*p++ == '"') {
- ret = INCLUDEDOT;
- while (*p && *p != '"')
- *line++ = *p++;
- } else
- while (*p && *p != '>')
- *line++ = *p++;
- *line = '\0';
- break;
- case DEFINE:
- /*
- * copy the definition back to the beginning of the line.
- */
- strcpy (line, p);
- break;
- case ELSE:
- case ENDIF:
- case ELIF:
- case PRAGMA:
- case ERROR:
- case IDENT:
- case SCCS:
- case EJECT:
- case WARNING:
- debug(0,("%s, line %d: #%s\n",
- file->i_file, filep->f_line, directives[ret]));
- /*
- * nothing to do.
- */
- break;
- }
- return(ret);
-}
-
-struct symtab **fdefined(symbol, file, srcfile)
- register char *symbol;
- struct inclist *file;
- struct inclist **srcfile;
-{
- register struct inclist **ip;
- register struct symtab **val;
- register int i;
- static int recurse_lvl = 0;
-
- if (file->i_flags & DEFCHECKED)
- return(NULL);
- file->i_flags |= DEFCHECKED;
- if (val = slookup(symbol, file))
- debug(1,("%s defined in %s as %s\n",
- symbol, file->i_file, (*val)->s_value));
- if (val == NULL && file->i_list)
- {
- for (ip = file->i_list, i=0; i < file->i_listlen; i++, ip++)
- if (file->i_merged[i]==FALSE) {
- val = fdefined(symbol, *ip, srcfile);
- if ((*ip)->i_flags & FINISHED) {
- merge2defines(file,*ip);
- file->i_merged[i]=TRUE;
- }
- if (val!=NULL) break;
- }
- }
- else if (val != NULL && srcfile != NULL) *srcfile = file;
- recurse_lvl--;
- file->i_flags &= ~DEFCHECKED;
-
- return(val);
-}
-
-struct symtab **isdefined(symbol, file, srcfile)
- register char *symbol;
- struct inclist *file;
- struct inclist **srcfile;
-{
- register struct symtab **val;
-
- if (val = slookup(symbol, &maininclist)) {
- debug(1,("%s defined on command line\n", symbol));
- if (srcfile != NULL) *srcfile = &maininclist;
- return(val);
- }
- if (val = fdefined(symbol, file, srcfile))
- return(val);
- debug(1,("%s not defined in %s\n", symbol, file->i_file));
- return(NULL);
-}
-
-/*
- * Return type based on if the #if expression evaluates to 0
- */
-int
-zero_value(exp, filep, file_red)
- register char *exp;
- register struct filepointer *filep;
- register struct inclist *file_red;
-{
- if (cppsetup(exp, filep, file_red))
- return(IFFALSE);
- else
- return(IF);
-}
-
-void
-define2(name, val, file)
- char *name, *val;
- struct inclist *file;
-{
- int first, last, below;
- register struct symtab **sp = NULL, **dest;
- struct symtab *stab;
-
- /* Make space if it's needed */
- if (file->i_defs == NULL)
- {
- file->i_defs = (struct symtab **)
- malloc(sizeof (struct symtab*) * SYMTABINC);
- file->i_ndefs = 0;
- }
- else if (!(file->i_ndefs % SYMTABINC))
- file->i_defs = (struct symtab **)
- realloc(file->i_defs,
- sizeof(struct symtab*)*(file->i_ndefs+SYMTABINC));
-
- if (file->i_defs == NULL)
- fatalerr("malloc()/realloc() failure in insert_defn()\n");
-
- below = first = 0;
- last = file->i_ndefs - 1;
- while (last >= first)
- {
- /* Fast inline binary search */
- register char *s1;
- register char *s2;
- register int middle = (first + last) / 2;
-
- /* Fast inline strchr() */
- s1 = name;
- s2 = file->i_defs[middle]->s_name;
- while (*s1++ == *s2++)
- if (s2[-1] == '\0') break;
-
- /* If exact match, set sp and break */
- if (*--s1 == *--s2)
- {
- sp = file->i_defs + middle;
- break;
- }
-
- /* If name > i_defs[middle] ... */
- if (*s1 > *s2)
- {
- below = first;
- first = middle + 1;
- }
- /* else ... */
- else
- {
- below = last = middle - 1;
- }
- }
-
- /* Search is done. If we found an exact match to the symbol name,
- just replace its s_value */
- if (sp != NULL)
- {
- free((*sp)->s_value);
- (*sp)->s_value = copy(val);
- return;
- }
-
- sp = file->i_defs + file->i_ndefs++;
- dest = file->i_defs + below + 1;
- while (sp > dest)
- {
- *sp = sp[-1];
- sp--;
- }
- stab = (struct symtab *) malloc(sizeof (struct symtab));
- if (stab == NULL)
- fatalerr("malloc()/realloc() failure in insert_defn()\n");
-
- stab->s_name = copy(name);
- stab->s_value = copy(val);
- *sp = stab;
-}
-
-void
-define(def, file)
- char *def;
- struct inclist *file;
-{
- char *val;
-
- /* Separate symbol name and its value */
- val = def;
- while (isalnum(*val) || *val == '_')
- val++;
- if (*val)
- *val++ = '\0';
- while (*val == ' ' || *val == '\t')
- val++;
-
- if (!*val)
- val = "1";
- define2(def, val, file);
-}
-
-struct symtab **slookup(symbol, file)
- register char *symbol;
- register struct inclist *file;
-{
- register int first = 0;
- register int last = file->i_ndefs - 1;
-
- if (file) while (last >= first)
- {
- /* Fast inline binary search */
- register char *s1;
- register char *s2;
- register int middle = (first + last) / 2;
-
- /* Fast inline strchr() */
- s1 = symbol;
- s2 = file->i_defs[middle]->s_name;
- while (*s1++ == *s2++)
- if (s2[-1] == '\0') break;
-
- /* If exact match, we're done */
- if (*--s1 == *--s2)
- {
- return file->i_defs + middle;
- }
-
- /* If symbol > i_defs[middle] ... */
- if (*s1 > *s2)
- {
- first = middle + 1;
- }
- /* else ... */
- else
- {
- last = middle - 1;
- }
- }
- return(NULL);
-}
-
-int merge2defines(file1, file2)
- struct inclist *file1;
- struct inclist *file2;
-{
- if ((file1!=NULL) && (file2!=NULL))
- {
- int first1 = 0;
- int last1 = file1->i_ndefs - 1;
-
- int first2 = 0;
- int last2 = file2->i_ndefs - 1;
-
- int first=0;
- struct symtab** i_defs = NULL;
- int deflen=file1->i_ndefs+file2->i_ndefs;
-
- if (deflen>0)
- {
- /* make sure deflen % SYMTABINC == 0 is still true */
- deflen += (SYMTABINC - deflen % SYMTABINC) % SYMTABINC;
- i_defs=(struct symtab**)
- malloc(deflen*sizeof(struct symtab*));
- if (i_defs==NULL) return 0;
- }
-
- while ((last1 >= first1) && (last2 >= first2))
- {
- char *s1=file1->i_defs[first1]->s_name;
- char *s2=file2->i_defs[first2]->s_name;
-
- if (strcmp(s1,s2) < 0)
- i_defs[first++]=file1->i_defs[first1++];
- else if (strcmp(s1,s2) > 0)
- i_defs[first++]=file2->i_defs[first2++];
- else /* equal */
- {
- i_defs[first++]=file2->i_defs[first2++];
- first1++;
- }
- }
- while (last1 >= first1)
- {
- i_defs[first++]=file1->i_defs[first1++];
- }
- while (last2 >= first2)
- {
- i_defs[first++]=file2->i_defs[first2++];
- }
-
- if (file1->i_defs) free(file1->i_defs);
- file1->i_defs=i_defs;
- file1->i_ndefs=first;
-
- return 1;
- }
- return 0;
-}
-
-void
-undefine(symbol, file)
- char *symbol;
- register struct inclist *file;
-{
- register struct symtab **ptr;
- struct inclist *srcfile;
- while ((ptr = isdefined(symbol, file, &srcfile)) != NULL)
- {
- srcfile->i_ndefs--;
- for (; ptr < srcfile->i_defs + srcfile->i_ndefs; ptr++)
- *ptr = ptr[1];
- }
-}
-
-int
-find_includes(filep, file, file_red, recursion, failOK)
- struct filepointer *filep;
- struct inclist *file, *file_red;
- int recursion;
- boolean failOK;
-{
- register char *line;
- register int type;
- boolean recfailOK;
-
- while (line = x_getline(filep)) {
- switch(type = deftype(line, filep, file_red, file, TRUE)) {
- case IF:
- doif:
- type = find_includes(filep, file,
- file_red, recursion+1, failOK);
- while ((type == ELIF) || (type == ELIFFALSE) ||
- (type == ELIFGUESSFALSE))
- type = gobble(filep, file, file_red);
- if (type == ELSE)
- gobble(filep, file, file_red);
- break;
- case IFFALSE:
- case IFGUESSFALSE:
- doiffalse:
- if (type == IFGUESSFALSE || type == ELIFGUESSFALSE)
- recfailOK = TRUE;
- else
- recfailOK = failOK;
- type = gobble(filep, file, file_red);
- if (type == ELSE)
- find_includes(filep, file,
- file_red, recursion+1, recfailOK);
- else
- if (type == ELIF)
- goto doif;
- else
- if ((type == ELIFFALSE) || (type == ELIFGUESSFALSE))
- goto doiffalse;
- break;
- case IFDEF:
- case IFNDEF:
- if ((type == IFDEF && isdefined(line, file_red, NULL))
- || (type == IFNDEF && !isdefined(line, file_red, NULL))) {
- debug(1,(type == IFNDEF ?
- "line %d: %s !def'd in %s via %s%s\n" : "",
- filep->f_line, line,
- file->i_file, file_red->i_file, ": doit"));
- type = find_includes(filep, file,
- file_red, recursion+1, failOK);
- while (type == ELIF || type == ELIFFALSE || type == ELIFGUESSFALSE)
- type = gobble(filep, file, file_red);
- if (type == ELSE)
- gobble(filep, file, file_red);
- }
- else {
- debug(1,(type == IFDEF ?
- "line %d: %s !def'd in %s via %s%s\n" : "",
- filep->f_line, line,
- file->i_file, file_red->i_file, ": gobble"));
- type = gobble(filep, file, file_red);
- if (type == ELSE)
- find_includes(filep, file,
- file_red, recursion+1, failOK);
- else if (type == ELIF)
- goto doif;
- else if (type == ELIFFALSE || type == ELIFGUESSFALSE)
- goto doiffalse;
- }
- break;
- case ELSE:
- case ELIFFALSE:
- case ELIFGUESSFALSE:
- case ELIF:
- if (!recursion)
- gobble(filep, file, file_red);
- case ENDIF:
- if (recursion)
- return(type);
- case DEFINE:
- define(line, file);
- break;
- case UNDEF:
- if (!*line) {
- warning("%s, line %d: incomplete undef == \"%s\"\n",
- file_red->i_file, filep->f_line, line);
- break;
- }
- undefine(line, file_red);
- break;
- case INCLUDE:
- add_include(filep, file, file_red, line, FALSE, failOK);
- break;
- case INCLUDEDOT:
- add_include(filep, file, file_red, line, TRUE, failOK);
- break;
- case ERROR:
- case WARNING:
- warning("%s: %d: %s\n", file_red->i_file,
- filep->f_line, line);
- break;
-
- case PRAGMA:
- case IDENT:
- case SCCS:
- case EJECT:
- break;
- case -1:
- warning("%s", file_red->i_file);
- if (file_red != file)
- warning1(" (reading %s)", file->i_file);
- warning1(", line %d: unknown directive == \"%s\"\n",
- filep->f_line, line);
- break;
- case -2:
- warning("%s", file_red->i_file);
- if (file_red != file)
- warning1(" (reading %s)", file->i_file);
- warning1(", line %d: incomplete include == \"%s\"\n",
- filep->f_line, line);
- break;
- }
- }
- file->i_flags |= FINISHED;
- return(-1);
-}
projects / rdpsrv / blobdiff