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cpp.h
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1991-08-05
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334 lines
/*
Copyright (C) 1990 Texas Instruments Incorporated.
Permission is granted to any individual or institution to use, copy, modify,
and distribute this software, provided that this complete copyright and
permission notice is maintained, intact, in all copies and supporting
documentation.
Texas Instruments Incorporated provides this software "as is" without
express or implied warranty.
* I n t e r n a l D e f i n i t i o n s f o r C P P
*
* In general, definitions in this file should not be changed.
*
* Change History:
* 19-Jan-90 DKM Added support for MVS and EBCDIC character set
* 25-Jun-91 GPD Added support for Pyramid.
*
* 29-Jul-91 PB Added support for AmigaOS (SAS/C)
*/
#include "cppdef.h"
#ifndef toupper
#define toupper(c) ((c) + ('A' - 'a'))
#endif /* no toupper */
#ifndef tolower
#define tolower(c) ((c) + ('a' - 'A'))
#endif /* no tolower */
#ifndef TRUE
#define TRUE 1
#define FALSE 0
#endif
#ifndef EOS
/*
* This is predefined in Decus C
*/
#define EOS '\0' /* End of string */
#endif
#define EOF_CHAR 0 /* Returned by get() on eof */
#define NULLST ((char *) NULL) /* Pointer to nowhere (linted) */
#define DEF_NOARGS (-1) /* #define foo vs #define foo() */
#define DEF_BUILTIN (-2) /* Builtin defines */
/*
* Non_display characters used for special markers.
* The location of these is different in EBCDIC because the location
* of the MAC_PARM table had be moved to start at char 1C.
*/
#if CHARSET == EBCDIC
#define DEF_MAGIC 0x19 /* Magic for #defines */
#define TOK_SEP 0x1A /* Token concatenation delim. */
#define COM_SEP 0x1B /* Magic comment separator */
#else
#define DEF_MAGIC 0x1D /* Magic for #defines */
#define TOK_SEP 0x1E /* Token concatenation delim. */
#define COM_SEP 0x1F /* Magic comment separator */
#endif
/*
* Note -- in Ascii, the following will map macro formals onto DEL + the
* C1 control character region (decimal 128 .. (128 + PAR_MAC)) which will
* be ok as long as PAR_MAC is less than 33). Note that the last PAR_MAC
* value is reserved for string substitution.
*
* For EBCDIC, map macro formals x1C (decimal 28 + PAR_MAC) which
* also is OK as long as PAR_MAC is less than 33. Note that this does
* overlap the code for BEL (decimal 47). That means that you cannot
* use the BEL char, ie '\a' in a #define macro.
*/
#if CHARSET == EBCDIC
# define MAC_PARM 0x1C /* Start at EBCDIC char x1C */
#else
# define MAC_PARM 0x7F /* Macro formals start here */
#endif
#if PAR_MAC >= 33
assertion fails -- PAR_MAC isn't less than 33
#endif
#define LASTPARM (PAR_MAC - 1)
/*
* Character type codes.
*/
#define INV 0 /* Invalid, must be zero */
#define OP_EOE INV /* End of expression */
#define DIG 1 /* Digit */
#define LET 2 /* Identifier start */
#define FIRST_BINOP OP_ADD
#define OP_ADD 3
#define OP_SUB 4
#define OP_MUL 5
#define OP_DIV 6
#define OP_MOD 7
#define OP_ASL 8
#define OP_ASR 9
#define OP_AND 10 /* &, not && */
#define OP_OR 11 /* |, not || */
#define OP_XOR 12
#define OP_EQ 13
#define OP_NE 14
#define OP_LT 15
#define OP_LE 16
#define OP_GE 17
#define OP_GT 18
#define OP_ANA 19 /* && */
#define OP_ORO 20 /* || */
#define OP_QUE 21 /* ? */
#define OP_COL 22 /* : */
#define OP_CMA 23 /* , (relevant?) */
#define LAST_BINOP OP_CMA /* Last binary operand */
/*
* The following are unary.
*/
#define FIRST_UNOP OP_PLU /* First Unary operand */
#define OP_PLU 24 /* + (draft ANSI standard) */
#define OP_NEG 25 /* - */
#define OP_COM 26 /* ~ */
#define OP_NOT 27 /* ! */
#define LAST_UNOP OP_NOT
#define OP_LPA 28 /* ( */
#define OP_RPA 29 /* ) */
#define OP_END 30 /* End of expression marker */
#define OP_MAX (OP_END + 1) /* Number of operators */
#define OP_FAIL (OP_END + 1) /* For error returns */
/*
* The following are for lexical scanning only.
*/
#define QUO 65 /* Both flavors of quotation */
#define DOT 66 /* . might start a number */
#define SPA 67 /* Space and tab */
#define BSH 68 /* Just a backslash */
#define END 69 /* EOF */
/*
* These bits are set in ifstack[]
*/
#define WAS_COMPILING 1 /* TRUE if compile set at entry */
#define ELSE_SEEN 2 /* TRUE when #else processed */
#define TRUE_SEEN 4 /* TRUE when #if TRUE processed */
/*
* Define bits for the basic types and their adjectives
*/
#define T_CHAR 1
#define T_INT 2
#define T_FLOAT 4
#define T_DOUBLE 8
#define T_SHORT 16
#define T_LONG 32
#define T_SIGNED 64
#define T_UNSIGNED 128
#define T_PTR 256 /* Pointer */
#define T_FPTR 512 /* Pointer to functions */
/*
* The DEFBUF structure stores information about #defined
* macros. Note that the defbuf->repl information is always
* in malloc storage.
*/
typedef struct defbuf {
struct defbuf *link; /* Next define in chain */
void (*expander)(); /* pointer to expander function */
char *repl; /* -> replacement */
int hash; /* Symbol table hash */
int nargs; /* For define(args) */
char name[1]; /* #define name */
} DEFBUF;
/*
* The FILEINFO structure stores information about open files
* and macros being expanded.
*/
/* WARNING: This structure is duplicated in defmacio.h */
typedef struct fileinfo {
char *bptr; /* Buffer pointer */
int line; /* for include or macro */
FILE *fp; /* File if non-null */
struct fileinfo *parent; /* Link to includer */
char *filename; /* File/macro name */
char *progname; /* From #line statement */
unsigned int unrecur; /* For macro recursion */
char* buffer; /* current input line */
} FILEINFO;
/*
* The SIZES structure is used to store the values for #if sizeof
*/
typedef struct sizes {
short bits; /* If this bit is set, */
short size; /* this is the datum size value */
short psize; /* this is the pointer size */
} SIZES;
/*
* nomacarg is a built-in #define on Decus C.
*/
#ifdef nomacarg
#define cput output /* cput concatenates tokens */
#else
#if COMMENT_INVISIBLE
#define cput(c) { if (c != TOK_SEP && c != COM_SEP) putchar(c); }
#else
#define cput(c) { if (c != TOK_SEP) putchar(c); }
#endif
#endif
#ifndef nomacarg
#define streq(s1, s2) (strcmp(s1, s2) == 0)
#endif
/*
* Error codes. VMS uses system definitions.
* Decus C codes are defined in stdio.h.
* Others are cooked to order.
*/
#ifdef vms
#include <ssdef.h>
#include <stsdef.h>
#define IO_NORMAL (SS$_NORMAL | STS$M_INHIB_MSG)
#define IO_ERROR SS$_ABORT
#endif
/*
* File access calls for OS2.
*/
#if (HOST == SYS_OS2 || HOST == SYS_XENIX || HOST == SYS_VMS || HOST == SYS_AMIGA)
#define F_OK 0 /* does file exist */
#define X_OK 1 /* is it executable by caller */
#define W_OK 2 /* writable by caller */
#define R_OK 4 /* readable by caller */
#endif
/* MVS headers already define F_OK, W_OK, and R_OK.
* X_OK is not supported on MVS -- but we define it here
* to be the same as R_OK for cpp7.
*/
#if HOST == SYS_MVS
#ifndef X_OK
#define X_OK R_OK /* X_OK same as R_OK on MVS */
#endif
#endif
/*
* Note: IO_NORMAL and IO_ERROR are defined in the Decus C stdio.h file
*/
#ifndef IO_NORMAL
#define IO_NORMAL 0
#endif
#ifndef IO_ERROR
#define IO_ERROR 1
#endif
/*
* Externs
*/
extern int line; /* Current line number */
extern int wrongline; /* Force #line to cc pass 1 */
extern int wrongfile; /* Force #line to cc pass 1 */
extern char type[]; /* Character classifier */
extern char *tokenbuf; /* Current input token */
extern int tokenbsize; /* Current size allocated in tokenbuf
(not counting 1 byte for zero) */
extern int instring; /* TRUE if scanning string */
extern int inmacro; /* TRUE if scanning #define */
extern int errors; /* Error counter */
extern DEFBUF *macro; /* Catches start of infinite macro */
extern int recursion; /* Macro depth counter */
extern char ifstack[BLK_NEST]; /* #if information */
#define compiling ifstack[0]
extern char *ifptr; /* -> current ifstack item */
extern char *incdir[NINCLUDE]; /* -i directories */
extern char **incend; /* -> active end of incdir */
extern int cflag; /* -C option (keep comments) */
extern int eflag; /* -E option (ignore errors) */
extern int nflag; /* -N option (no pre-defines) */
extern int yflag; /* -Y option (alt stdincl) */
extern int rec_recover; /* unwind recursive macros */
extern char *preset[]; /* Standard predefined symbols */
extern char *magic[]; /* Magic predefined symbols */
extern FILEINFO *infile; /* Current input file */
extern char *altincl; /* Alternate std include dir */
extern char work[NWORK + 1]; /* #define scratch */
extern char *workp; /* Free space in work */
extern int debug; /* Debug level */
extern int keepcomments; /* Don't remove comments if set */
extern SIZES size_table[]; /* For #if sizeof sizes */
extern char *getmem(); /* Get memory or die. */
extern char *incmem(); /* Increase size of block or die. */
extern DEFBUF *lookid(); /* Look for a #define'd thing */
extern DEFBUF *defendel(); /* Symbol table enter/delete */
extern char *savestring(); /* Stuff string in malloc mem. */
extern char *strcpy();
extern char *strcat();
#if pyr
#define strchr index
#define strrchr rindex
#endif
extern char *strrchr();
extern char *strchr();
#if HOST != SYS_MVS
extern long time();
#endif
#if (HOST != SYS_OS2 && HOST != SYS_XENIX && HOST != SYS_MVS && HOST != SYS_AIX && HOST != SYS_AMIGA)
#if defined(sun) || (!defined(i386) && !defined(unix))
extern char *sprintf(); /* Lint needs this */
#endif
#endif
typedef int (*internal_expander) ();
struct expander_pair {
char* name;
internal_expander function;
};
extern struct expander_pair internal_macros[]; /* defines internal macro expanders */