source: mainline/uspace/app/pcc/cc/cpp/cpp.h@ a7de7182

/*      $Id: cpp.h,v 1.47.2.1 2011/02/26 06:36:40 ragge Exp $   */

/*
 * Copyright (c) 2004,2010 Anders Magnusson (ragge@ludd.luth.se).
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include <stdio.h> /* for obuf */
#include <stdlib.h>

#include "config.h"

typedef unsigned char usch;
extern usch yytext[];
extern usch *stringbuf;

extern  int     trulvl;
extern  int     flslvl;
extern  int     elflvl;
extern  int     elslvl;
extern  int     tflag, Cflag, Pflag;
extern  int     Mflag, dMflag;
extern  usch    *Mfile;
extern  int     ofd;

/* args for lookup() */
#define FIND    0
#define ENTER   1

/* buffer used internally */
#ifndef CPPBUF
#if defined(__pdp11__)
#define CPPBUF  BUFSIZ
#define BUF_STACK
#elif defined(WIN32)
/* winxp seems to fail > 26608 bytes */
#define CPPBUF  16384
#else
#define CPPBUF  (65536*2)
#endif
#endif

#define MAXARGS 128     /* Max # of args to a macro. Should be enouth */

#define NAMEMAX CPPBUF  /* currently pushbackbuffer */
#define BBUFSZ  (NAMEMAX+CPPBUF+1)

#define GCCARG  0xfd    /* has gcc varargs that may be replaced with 0 */
#define VARG    0xfe    /* has varargs */
#define OBJCT   0xff
#define WARN    1       /* SOH, not legal char */
#define CONC    2       /* STX, not legal char */
#define SNUFF   3       /* ETX, not legal char */
#define EBLOCK  4       /* EOT, not legal char */

/* Used in macro expansion */
#define RECMAX  10000                   /* max # of recursive macros */
extern struct symtab *norep[RECMAX];
extern int norepptr;
extern unsigned short bptr[RECMAX];
extern int bidx;
#define MKB(l,h)        (l+((h)<<8))

/* quick checks for some characters */
#define C_SPEC  001
#define C_EP    002
#define C_ID    004
#define C_I     (C_SPEC|C_ID)           
#define C_2     010             /* for yylex() tokenizing */
#define C_WSNL  020             /* ' ','\t','\r','\n' */
#define iswsnl(x) (spechr[x] & C_WSNL)
extern char spechr[];

/* definition for include file info */
struct includ {
        struct includ *next;
        const usch *fname;      /* current fn, changed if #line found */
        const usch *orgfn;      /* current fn, not changed */
        int lineno;
        int infil;
        usch *curptr;
        usch *maxread;
        usch *ostr;
        usch *buffer;
        int idx;
        void *incs;
        const usch *fn;
#ifdef BUF_STACK
        usch bbuf[BBUFSZ];
#else
        usch *bbuf;
#endif
} *ifiles;

/* Symbol table entry  */
struct symtab {
        const usch *namep;    
        const usch *value;    
        const usch *file;
        int line;
};

struct initar {
        struct initar *next;
        int type;
        char *str;
};

/*
 * Struct used in parse tree evaluation.
 * op is one of:
 *      - number type (NUMBER, UNUMBER)
 *      - zero (0) if divided by zero.
 */
struct nd {
        int op;
        union {
                long long val;
                unsigned long long uval;
        } n;
};

#define nd_val n.val
#define nd_uval n.uval

struct symtab *lookup(const usch *namep, int enterf);
usch *gotident(struct symtab *nl);
int slow;       /* scan slowly for new tokens */
int submac(struct symtab *nl, int);
int kfind(struct symtab *nl);
int doexp(void);
int donex(void);

int pushfile(const usch *fname, const usch *fn, int idx, void *incs);
void popfile(void);
void prtline(void);
int yylex(void);
int sloscan(void);
void cunput(int);
int curline(void);
char *curfile(void);
void setline(int);
void setfile(char *);
int yyparse(void);
void yyerror(const char *);
void unpstr(const usch *);
usch *savstr(const usch *str);
void savch(int c);
void mainscan(void);
void putch(int);
void putstr(const usch *s);
void line(void);
usch *sheap(const char *fmt, ...);
void xwarning(usch *);
void xerror(usch *);
#ifdef HAVE_CPP_VARARG_MACRO_GCC
#define warning(...) xwarning(sheap(__VA_ARGS__))
#define error(...) xerror(sheap(__VA_ARGS__))
#else
#define warning printf
#define error printf
#endif
int cinput(void);
void getcmnt(void);