ppdata.c

/***********************************************************************
*                                                                      *
*               This software is part of the ast package               *
*          Copyright (c) 1986-2012 AT&T Intellectual Property          *
*                      and is licensed under the                       *
*                 Eclipse Public License, Version 1.0                  *
*                    by AT&T Intellectual Property                     *
*                                                                      *
*                A copy of the License is available at                 *
*          http://www.eclipse.org/org/documents/epl-v10.html           *
*         (with md5 checksum b35adb5213ca9657e911e9befb180842)         *
*                                                                      *
*              Information and Software Systems Research               *
*                            AT&T Research                             *
*                           Florham Park NJ                            *
*                                                                      *
*                 Glenn Fowler <[email protected]>                  *
*                                                                      *
***********************************************************************/
#pragma prototyped
/*
 * Glenn Fowler
 * AT&T Research
 *
 * preprocessor data
 *
 * intended to be a conforming implementation of the translation phases
 * (2.1.1.2) 1,2,3,4 and 6 of the "American National Standard for
 * Information Systems -- Programming Language -- C", ANSI X3.159-1989.
 *
 * STANDARD INTERPRETATION:
 *
 *	include files are forced to preserve #if nesting levels
 *	support for this is found in the recursive description for
 *	include file processing in the translation phases
 *
 *	ID"..." produces two tokens: {ID}{"..."}
 *	ID'...' produces two tokens: {ID}{'...'}
 *
 * COMPATIBILITY:
 *
 *	only sane Reiser compatibility is implemented
 *
 *	strange handling of `\newline', especially in directives,
 *	is not implemented
 *
 *	dissappearing comments used as concatenation operators work
 *	only within macro bodies
 */

static const char id[] = "\n@(#)$Id: libpp (AT&T Research) 2012-06-06 $\0\n";

#include "pplib.h"

#ifndef IDNAME
#define IDNAME	"pp"
#endif

static char	addbuf[MAXTOKEN+1];	/* ADD buffer			*/
static char	argsbuf[MAXTOKEN+1];	/* predicate args		*/
static char	catbuf[MAXTOKEN+1];	/* catenation buffer		*/
static char	hidebuf[MAXTOKEN+1];	/* pp:hide buffer		*/
static char	outbuf[2*(PPBUFSIZ+MAXTOKEN)];/* output buffer		*/
static char	pathbuf[MAXTOKEN+1];	/* full path of last #include	*/
static char	tmpbuf[MAXTOKEN+1];	/* very temporary buffer	*/
static char	tokbuf[2*MAXTOKEN+1];	/* token buffer			*/
static char	valbuf[MAXTOKEN+1];	/* builtin macro value buffer	*/

static char	optflags[X_last_option+1];/* OPT_* flags indexed by X_*	*/

static char	null[1];

static struct ppinstk	instack =	/* input stream stack		*/
{
	&null[0]			/* nextchr			*/
};

static struct ppdirs	stddir =	/* standard include directory	*/
{
	PPSTANDARD,	0,		1, INC_STANDARD, TYPE_INCLUDE|TYPE_DIRECTORY|TYPE_HOSTED
};

static struct ppdirs	firstdir =	/* first include directory	*/
{
	"",		&stddir,	0, INC_PREFIX, TYPE_INCLUDE|TYPE_DIRECTORY
};

struct ppglobals pp =
{
	/* public globals */

	&id[10],			/* version			*/
	"",				/* lineid			*/
	"/dev/stdout",			/* outfile			*/
	IDNAME,				/* pass				*/
	&tokbuf[0],			/* token			*/
	0,				/* symbol			*/

	/* exposed for the output macros */

	&outbuf[0],			/* outb				*/
	&outbuf[0],			/* outbuf			*/
	&outbuf[0],			/* outp				*/
	&outbuf[PPBUFSIZ],		/* oute				*/
	0,				/* offset			*/

	/* public context */

	&firstdir,			/* lcldirs			*/
	&firstdir,			/* stddirs			*/
	0,				/* flags			*/
	0,				/* symtab			*/

	/* private context */

	0,				/* context			*/
	0,				/* state			*/
	ALLMULTIPLE|CATLITERAL,		/* mode				*/
	PREFIX,				/* option			*/
	0,				/* test				*/
	0,				/* filedeps.sp			*/
	0,				/* filedeps.flags		*/
	&firstdir,			/* firstdir			*/
	&firstdir,			/* lastdir			*/
	0,				/* hide				*/
	0,				/* column			*/
	-1,				/* pending			*/
	0,				/* firstfile			*/
	0,				/* lastfile			*/
	0,				/* ignore			*/
	0,				/* probe			*/
	0,				/* filtab			*/
	0,				/* prdtab			*/
	0,				/* date				*/
	0,				/* time				*/
	0,				/* maps				*/
	0,				/* ro_state			*/
	0,				/* ro_mode			*/
	0,				/* ro_option			*/
	{0},				/* ro_op[]			*/
	{0},				/* cdir				*/
	{0},				/* hostdir			*/
	0,				/* ppdefault			*/
	0,				/* firstindex			*/
	0,				/* lastindex			*/
	0,				/* firstop			*/
	0,				/* lastop			*/
	0,				/* firsttx			*/
	0,				/* lasttx			*/
	0,				/* arg_file			*/
	0,				/* arg_mode			*/
	0,				/* arg_style			*/
	0,				/* c				*/
	0,				/* hosted			*/
	0,				/* ignoresrc			*/
	0,				/* initialized			*/
	0,				/* standalone			*/
	0,				/* spare_1			*/

	/* library private globals */

	"\"08/11/94\"",			/* checkpoint (with quotes!)	*/
	128,				/* constack			*/
	&instack,			/* in				*/
	&addbuf[0],			/* addp				*/
	&argsbuf[0],			/* args				*/
	&addbuf[0],			/* addbuf			*/
	&catbuf[0],			/* catbuf			*/
	0,				/* hdrbuf			*/
	&hidebuf[0],			/* hidebuf			*/
	&pathbuf[0],			/* path				*/
	&tmpbuf[0],			/* tmpbuf			*/
	&valbuf[0],			/* valbuf			*/
	&optflags[0],			/* optflags			*/
	'\n',				/* lastout			*/

	/* the rest are implicitly initialized */
};

char	ppctype[UCHAR_MAX+1];