home *** CD-ROM | disk | FTP | other *** search
- /*
- * mdef.h
- * Facility: m4 macro processor
- * by: oz
- */
-
-
- #ifndef unix
- #define unix 0
- #endif
-
- #ifndef vms
- #define vms 0
- #endif
-
- #if vms
-
- #include stdio
- #include ctype
- #include signal
-
- #else
-
- #include <stdio.h>
- #include <ctype.h>
- #include <signal.h>
-
- #endif
-
- /*
- *
- * m4 constants..
- *
- */
-
- #define MACRTYPE 1
- #define DEFITYPE 2
- #define EXPRTYPE 3
- #define SUBSTYPE 4
- #define IFELTYPE 5
- #define LENGTYPE 6
- #define CHNQTYPE 7
- #define SYSCTYPE 8
- #define UNDFTYPE 9
- #define INCLTYPE 10
- #define SINCTYPE 11
- #define PASTTYPE 12
- #define SPASTYPE 13
- #define INCRTYPE 14
- #define IFDFTYPE 15
- #define PUSDTYPE 16
- #define POPDTYPE 17
- #define SHIFTYPE 18
- #define DECRTYPE 19
- #define DIVRTYPE 20
- #define UNDVTYPE 21
- #define DIVNTYPE 22
- #define MKTMTYPE 23
- #define ERRPTYPE 24
- #define M4WRTYPE 25
- #define TRNLTYPE 26
- #define DNLNTYPE 27
- #define DUMPTYPE 28
- #define CHNCTYPE 29
- #define INDXTYPE 30
- #define SYSVTYPE 31
- #define EXITTYPE 32
- #define DEFNTYPE 33
-
- #define STATIC 128
-
- /*
- * m4 special characters
- */
-
- #define ARGFLAG '$'
- #define LPAREN '('
- #define RPAREN ')'
- #define LQUOTE '`'
- #define RQUOTE '\''
- #define COMMA ','
- #define SCOMMT '#'
- #define ECOMMT '\n'
-
- /*
- * definitions of diversion files. If the name of
- * the file is changed, adjust UNIQUE to point to the
- * wildcard (*) character in the filename.
- */
-
- #if unix
- #define DIVNAM "/tmp/m4*XXXXXX" /* unix diversion files */
- #define UNIQUE 7 /* unique char location */
- #else
- #if vms
- #define DIVNAM "sys$login:m4*XXXXXX" /* vms diversion files */
- #define UNIQUE 12 /* unique char location */
- #else
- #define DIVNAM "\M4*XXXXXX" /* msdos diversion files */
- #define UNIQUE 3 /* unique char location */
- #endif
- #endif
-
- /*
- * other important constants
- */
-
- #define EOS (char) 0
- #define MAXINP 10 /* maximum include files */
- #define MAXOUT 10 /* maximum # of diversions */
- #define MAXSTR 512 /* maximum size of string */
- #define BUFSIZE 4096 /* size of pushback buffer */
- #define STACKMAX 1024 /* size of call stack */
- #define STRSPMAX 4096 /* size of string space */
- #define MAXTOK MAXSTR /* maximum chars in a tokn */
- #define HASHSIZE 199 /* maximum size of hashtab */
-
- #define ALL 1
- #define TOP 0
-
- #define TRUE 1
- #define FALSE 0
- #define cycle for(;;)
-
- #ifdef VOID
- #define void int /* define if void is void. */
- #endif
-
- /*
- * m4 data structures
- */
-
- typedef struct ndblock *ndptr;
-
- struct ndblock { /* hastable structure */
- char *name; /* entry name.. */
- char *defn; /* definition.. */
- int type; /* type of the entry.. */
- ndptr nxtptr; /* link to next entry.. */
- };
-
- #define nil ((ndptr) 0)
-
- struct keyblk {
- char *knam; /* keyword name */
- int ktyp; /* keyword type */
- };
-
- typedef union { /* stack structure */
- int sfra; /* frame entry */
- char *sstr; /* string entry */
- } stae;
-
- /*
- * macros for readibility and/or speed
- *
- * gpbc() - get a possibly pushed-back character
- * min() - select the minimum of two elements
- * pushf() - push a call frame entry onto stack
- * pushs() - push a string pointer onto stack
- */
- #define gpbc() (bp > buf) ? *--bp : getc(infile[ilevel])
- #define min(x,y) ((x > y) ? y : x)
- #define pushf(x) if (sp < STACKMAX) mstack[++sp].sfra = (x)
- #define pushs(x) if (sp < STACKMAX) mstack[++sp].sstr = (x)
-
- /*
- * . .
- * | . | <-- sp | . |
- * +-------+ +-----+
- * | arg 3 ----------------------->| str |
- * +-------+ | . |
- * | arg 2 ---PREVEP-----+ .
- * +-------+ |
- * . | | |
- * +-------+ | +-----+
- * | plev | PARLEV +-------->| str |
- * +-------+ | . |
- * | type | CALTYP .
- * +-------+
- * | prcf ---PREVFP--+
- * +-------+ |
- * | . | PREVSP |
- * . |
- * +-------+ |
- * | <----------+
- * +-------+
- *
- */
- #define PARLEV (mstack[fp].sfra)
- #define CALTYP (mstack[fp-1].sfra)
- #define PREVEP (mstack[fp+3].sstr)
- #define PREVSP (fp-3)
- #define PREVFP (mstack[fp-2].sfra)
-