xref: /netbsd-src/external/bsd/pcc/dist/pcc/cc/cpp/cpp.h (revision c2f76ff004a2cb67efe5b12d97bd3ef7fe89e18d)
1 /*	Id: cpp.h,v 1.43 2010/02/25 15:49:00 ragge Exp 	*/
2 /*	$NetBSD: cpp.h,v 1.1.1.3 2010/06/03 18:57:35 plunky Exp $	*/
3 
4 /*
5  * Copyright (c) 2004 Anders Magnusson (ragge@ludd.luth.se).
6  * All rights reserved.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  * 1. Redistributions of source code must retain the above copyright
12  *    notice, this list of conditions and the following disclaimer.
13  * 2. Redistributions in binary form must reproduce the above copyright
14  *    notice, this list of conditions and the following disclaimer in the
15  *    documentation and/or other materials provided with the distribution.
16  * 3. The name of the author may not be used to endorse or promote products
17  *    derived from this software without specific prior written permission
18  *
19  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
20  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
22  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
23  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
24  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
28  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29  */
30 
31 #include <stdio.h> /* for obuf */
32 #include <stdlib.h>
33 
34 #include "config.h"
35 
36 typedef unsigned char usch;
37 #ifdef YYTEXT_POINTER
38 extern char *yytext;
39 #else
40 extern char yytext[];
41 #endif
42 extern usch *stringbuf;
43 
44 extern	int	trulvl;
45 extern	int	flslvl;
46 extern	int	elflvl;
47 extern	int	elslvl;
48 extern	int	tflag, Cflag, Pflag;
49 extern	int	Mflag, dMflag;
50 extern	usch	*Mfile;
51 extern	int	ofd;
52 
53 /* args for lookup() */
54 #define FIND    0
55 #define ENTER   1
56 
57 /* buffer used internally */
58 #ifndef CPPBUF
59 #if defined(__pdp11__)
60 #define CPPBUF  BUFSIZ
61 #elif defined(WIN32)
62 /* winxp seems to fail > 26608 bytes */
63 #define CPPBUF	16384
64 #else
65 #define CPPBUF	65536
66 #endif
67 #endif
68 
69 #define	NAMEMAX	CPPBUF	/* currently pushbackbuffer */
70 
71 /* definition for include file info */
72 struct includ {
73 	struct includ *next;
74 	const usch *fname;	/* current fn, changed if #line found */
75 	const usch *orgfn;	/* current fn, not changed */
76 	int lineno;
77 	int infil;
78 	usch *curptr;
79 	usch *maxread;
80 	usch *ostr;
81 	usch *buffer;
82 	int idx;
83 	void *incs;
84 	const usch *fn;
85 	usch bbuf[NAMEMAX+CPPBUF+1];
86 } *ifiles;
87 
88 /* Symbol table entry  */
89 struct symtab {
90 	const usch *namep;
91 	const usch *value;
92 	const usch *file;
93 	int line;
94 };
95 
96 struct initar {
97 	struct initar *next;
98 	int type;
99 	char *str;
100 };
101 
102 /*
103  * Struct used in parse tree evaluation.
104  * op is one of:
105  *	- number type (NUMBER, UNUMBER)
106  *	- zero (0) if divided by zero.
107  */
108 struct nd {
109 	int op;
110 	union {
111 		long long val;
112 		unsigned long long uval;
113 	} n;
114 };
115 
116 #define nd_val n.val
117 #define nd_uval n.uval
118 
119 struct recur;	/* not used outside cpp.c */
120 int subst(struct symtab *, struct recur *);
121 struct symtab *lookup(const usch *namep, int enterf);
122 usch *gotident(struct symtab *nl);
123 int slow;	/* scan slowly for new tokens */
124 
125 int pushfile(const usch *fname, const usch *fn, int idx, void *incs);
126 void popfile(void);
127 void prtline(void);
128 int yylex(void);
129 int sloscan(void);
130 void cunput(int);
131 int curline(void);
132 char *curfile(void);
133 void setline(int);
134 void setfile(char *);
135 int yyparse(void);
136 void yyerror(const char *);
137 void unpstr(const usch *);
138 usch *savstr(const usch *str);
139 void savch(int c);
140 void mainscan(void);
141 void putch(int);
142 void putstr(const usch *s);
143 void line(void);
144 usch *sheap(const char *fmt, ...);
145 void xwarning(usch *);
146 void xerror(usch *);
147 #ifdef HAVE_CPP_VARARG_MACRO_GCC
148 #define warning(...) xwarning(sheap(__VA_ARGS__))
149 #define error(...) xerror(sheap(__VA_ARGS__))
150 #else
151 #define warning printf
152 #define error printf
153 #endif
154 void expmac(struct recur *);
155 int cinput(void);
156 void getcmnt(void);
157