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/* $Id$ */
/*
* Copyright (c) 2004 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.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
* 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;
#ifdef YYTEXT_POINTER
extern char *yytext;
#else
extern char yytext[];
#endif
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
#elif defined(WIN32)
/* winxp seems to fail > 26608 bytes */
#define CPPBUF 16384
#else
#define CPPBUF 65536
#endif
#endif
#define NAMEMAX CPPBUF /* currently pushbackbuffer */
/* 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;
usch bbuf[NAMEMAX+CPPBUF+1];
} *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 recur; /* not used outside cpp.c */
int subst(struct symtab *, struct recur *);
struct symtab *lookup(const usch *namep, int enterf);
usch *gotident(struct symtab *nl);
int slow; /* scan slowly for new tokens */
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
void expmac(struct recur *);
int cinput(void);
void getcmnt(void);
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