Return to parse.c CVS log

Up to [XFree86 CVS] / xc / config / makedepend

2409. Updates to s3virge driver to get it working under Linux/Alpha
      (#2586, Matt Grossman).
2408. Fix getline() clash (#2585, Alan Hourihane).
2407. Have the s3virge driver use the new XAA rop helper functions (#2584,
      Mark Vojkovich).
2406. Add code to SuperProbe to detect the S3 Trio3D and Savage3D
      (2583, Eric Molitor).
2405. Add some XAA helper functions that drivers can call for help
      converting X rops into MS rops (#2582, Mark Vojkovich).
2404. Resync the overlay support in the glint driver (#2580, 2581,
      Mark Vojkovich).
2403. Add support for changing the overlay color key to the MGA driver
      (#2579, Mark Vojkovich).
2402. Preallocate the color key in the default colormap and set it to
      something already in the default man (black) so that AllocColor will
      never allocate it (#2578, Mark Vojkovich).
2401. Use the color key field in the ScrnInfoRec for the overlay layers
      (#2578, Mark Vojkovich).
2400. Preliminary loader support for Linux/PPC ELF objects (#2577 (2570),
      Stuart Anderson).
2399. Fix some XAA offscreen pixmap problmes (#2576, Mark Vojkovich).
2398. DGA fixes.  Old apps should now run with the new driver interface,
      and event handling should work better than before (#2575,
      Mark Vojkovich).
2397. Fix most remaining signed/unsigned and prototype warnings in the
      following directories: lib/Xaw, lib/Xmu, programs/xclipboard,
      programs/xconsole, programs/xmag, and programs/xvidtune (#2574,
      Thomas Dickey).
2396. Restore the interface of XmuConvertStandardSelection() to use
      XPointer rather than XtPointer (#2574, Thomas Dickey).
2395. Fix an malloc size bug in libICE (#2572, Christopher Sekiya).
2394. Make MIT-SHM resource types non-static so that other extensions
      (like Xv) can access client shared memory segments (#2571,
      Mark Vojkovich).
2393. First cut at altering the C&T user docs for 4.0 (#2569, David Bateman).
2392. Fix a C&T problem affecting the colourmap setup for 1bpp modes, and some
      other minor C&T driver fixes (#2569, David Bateman).
2391. Fix an buffer overflow in os/connection.c (#2568, Gerd Knorr).
2390. Add support for Modes sections and the UseModes keyword for Monitor
      sections to the parser (the data isn't used yet) (#2564, Dirk Hohndel).
2389. Fix xfree86.cf for Alpha (#2567, Dirk Hohndel).
2388. Fix XAAFillPolygonStippled to obey the flag NO_TRANSPARENCY in
      Mono8x8PatternFill (#2566, Xavier Ducoin).
2387. Only allow the shadowfb layer in the C&T driver when linear addressing
      is enabled (#2565 (2561), David Bateman).
2386. Fix some problems with the xf8_16bpp layer, and allow it to work
      with depth 15 as well as 16 (#2565 (2561, 2562), David Bateman).
2385. Implement TrueColor with PseudoColor Overlays (8+16) for the
      C&T driver for HiQV chipsets (#2565 (2561), David Bateman).
2384. Add a -quiet option to xgamma (#2565 (2561), David Bateman).
2383. Add TrueColor Gamma Correction for C&T HiQV chipsets (#2565 (2561),
      David Bateman).
2382. Fix Permedia 2 HW cursor lockup (#2563, Alan Hourihane).
2381. Initial XAA support for SiS530 and SiS620 (#2560, Xavier Ducoin).
2380. Add SuperProbe for SiS (#2559, Xavier Ducoin).
2379. Fix the InstalMultipleMan and InstallMultipleManSuffix rules for
      NetBSD and OpenBSD (#2558 (2557), Matthieu Herrb).
2378. Add Cards entry for Number Nine FX Reality 772 (#2556, Harald Koenig).
2377. Make XF86Setup build again (not fully functional yet) (#2555, Joe Moss).
2376. Update the apm (Alliance Promotion) to the 4.0 interface (#2554,
      Loic Grenie, Henrik Harmsen).

/* $TOG: parse.c /main/35 1998/03/25 08:17:55 kaleb $ */
/*

Copyright (c) 1993, 1994, 1998 The Open Group

All Rights Reserved.

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
OPEN GROUP 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 Open Group 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 Open Group.

*/
/* $XFree86: xc/config/makedepend/parse.c,v 1.5 1998/10/05 13:21:49 dawes Exp $ */

#include "def.h"

extern char	*directives[];
extern struct inclist	maininclist;

static int deftype (char *line, struct filepointer *filep,
		    struct inclist *file_red, struct inclist *file,
		    int parse_it);
static int zero_value(char *exp, struct filepointer *filep,
		    struct inclist *file_red);
static int merge2defines(struct inclist *file1, struct inclist *file2);

static int
gobble(struct filepointer *filep, struct inclist *file,
       struct inclist *file_red)
{
	char	*line;
	int	type;

	while ((line = getnextline(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.
 */
static int 
deftype (char *line, struct filepointer *filep, 
	     struct inclist *file_red, struct inclist *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(char *symbol, struct inclist *file, struct inclist **srcfile)
{
	struct inclist	**ip;
	struct symtab	**val;
	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(char *symbol, struct inclist *file, struct inclist **srcfile)
{
	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
 */
static int
zero_value(char *exp, struct filepointer *filep, struct inclist *file_red)
{
	if (cppsetup(exp, filep, file_red))
	    return(IFFALSE);
	else
	    return(IF);
}

void
define2(char *name, char *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(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(char *symbol, 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);
}

static int 
merge2defines(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(char *symbol, 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(struct filepointer *filep, struct inclist *file, 
	      struct inclist *file_red, int recursion, boolean failOK)
{
	register char	*line;
	register int	type;
	boolean recfailOK;

	while ((line = getnextline(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);
}