277 lines
7 KiB
C
Executable file
277 lines
7 KiB
C
Executable file
/*
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* mdef.h
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* Facility: m4 macro processor
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* by: oz
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*/
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#define unix 1 /* (kjb) */
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#ifndef unix
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#define unix 0
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#endif
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#ifndef vms
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#define vms 0
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#endif
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#if vms
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#include stdio
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#include ctype
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#include signal
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#else
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#include <sys/types.h>
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#include <ctype.h>
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#include <signal.h>
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#include <string.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <stdio.h>
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#endif
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/*
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*
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* m4 constants..
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*
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*/
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#define MACRTYPE 1
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#define DEFITYPE 2
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#define EXPRTYPE 3
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#define SUBSTYPE 4
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#define IFELTYPE 5
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#define LENGTYPE 6
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#define CHNQTYPE 7
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#define SYSCTYPE 8
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#define UNDFTYPE 9
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#define INCLTYPE 10
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#define SINCTYPE 11
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#define PASTTYPE 12
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#define SPASTYPE 13
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#define INCRTYPE 14
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#define IFDFTYPE 15
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#define PUSDTYPE 16
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#define POPDTYPE 17
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#define SHIFTYPE 18
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#define DECRTYPE 19
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#define DIVRTYPE 20
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#define UNDVTYPE 21
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#define DIVNTYPE 22
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#define MKTMTYPE 23
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#define ERRPTYPE 24
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#define M4WRTYPE 25
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#define TRNLTYPE 26
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#define DNLNTYPE 27
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#define DUMPTYPE 28
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#define CHNCTYPE 29
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#define INDXTYPE 30
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#define SYSVTYPE 31
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#define EXITTYPE 32
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#define DEFNTYPE 33
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#define STATIC 128
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/*
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* m4 special characters
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*/
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#define ARGFLAG '$'
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#define LPAREN '('
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#define RPAREN ')'
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#define LQUOTE '`'
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#define RQUOTE '\''
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#define COMMA ','
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#define SCOMMT '#'
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#define ECOMMT '\n'
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/*
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* definitions of diversion files. If the name of
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* the file is changed, adjust UNIQUE to point to the
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* wildcard (*) character in the filename.
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*/
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#if unix
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#define DIVNAM "/tmp/m4*XXXXXX" /* unix diversion files */
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#define UNIQUE 7 /* unique char location */
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#else
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#if vms
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#define DIVNAM "sys$login:m4*XXXXXX" /* vms diversion files */
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#define UNIQUE 12 /* unique char location */
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#else
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#define DIVNAM "\M4*XXXXXX" /* msdos diversion files */
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#define UNIQUE 3 /* unique char location */
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#endif
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#endif
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/*
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* other important constants
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*/
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#define EOS (char) 0
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#define MAXINP 10 /* maximum include files */
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#define MAXOUT 10 /* maximum # of diversions */
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#define MAXSTR 512 /* maximum size of string */
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#define BUFSIZE 4096 /* size of pushback buffer */
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#define STACKMAX 1024 /* size of call stack */
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#define STRSPMAX 4096 /* size of string space */
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#define MAXTOK MAXSTR /* maximum chars in a tokn */
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#define HASHSIZE 199 /* maximum size of hashtab */
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#define ALL 1
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#define TOP 0
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#define TRUE 1
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#define FALSE 0
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#define cycle for(;;)
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#ifdef VOID
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#define void int /* define if void is void. */
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#endif
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/*
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* m4 data structures
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*/
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typedef struct ndblock *ndptr;
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struct ndblock { /* hastable structure */
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char *name; /* entry name.. */
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char *defn; /* definition.. */
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int type; /* type of the entry.. */
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ndptr nxtptr; /* link to next entry.. */
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};
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#define nil ((ndptr) 0)
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struct keyblk {
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char *knam; /* keyword name */
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int ktyp; /* keyword type */
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};
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typedef union { /* stack structure */
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int sfra; /* frame entry */
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char *sstr; /* string entry */
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} stae;
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/*
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* macros for readibility and/or speed
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*
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* gpbc() - get a possibly pushed-back character
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* min() - select the minimum of two elements
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* pushf() - push a call frame entry onto stack
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* pushs() - push a string pointer onto stack
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*/
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#define gpbc() (bp > buf) ? *--bp : getc(infile[ilevel])
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#define min(x,y) ((x > y) ? y : x)
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#define pushf(x) if (sp < STACKMAX) mstack[++sp].sfra = (x)
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#define pushs(x) if (sp < STACKMAX) mstack[++sp].sstr = (x)
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/*
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* . .
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* | . | <-- sp | . |
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* +-------+ +-----+
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* | arg 3 ----------------------->| str |
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* +-------+ | . |
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* | arg 2 ---PREVEP-----+ .
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* +-------+ |
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* . | | |
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* +-------+ | +-----+
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* | plev | PARLEV +-------->| str |
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* +-------+ | . |
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* | type | CALTYP .
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* +-------+
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* | prcf ---PREVFP--+
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* +-------+ |
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* | . | PREVSP |
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* . |
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* +-------+ |
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* | <----------+
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* +-------+
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*
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*/
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#define PARLEV (mstack[fp].sfra)
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#define CALTYP (mstack[fp-1].sfra)
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#define PREVEP (mstack[fp+3].sstr)
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#define PREVSP (fp-3)
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#define PREVFP (mstack[fp-2].sfra)
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/* function prototypes */
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/* eval.c */
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_PROTOTYPE(void eval, (char *argv [], int argc, int td ));
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/* expr.c */
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_PROTOTYPE(int expr, (char *expbuf ));
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_PROTOTYPE(int query, (void));
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_PROTOTYPE(int lor, (void));
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_PROTOTYPE(int land, (void));
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_PROTOTYPE(int bor, (void));
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_PROTOTYPE(int bxor, (void));
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_PROTOTYPE(int band, (void));
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_PROTOTYPE(int eql, (void));
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_PROTOTYPE(int relat, (void));
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_PROTOTYPE(int shift, (void));
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_PROTOTYPE(int primary, (void));
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_PROTOTYPE(int term, (void));
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_PROTOTYPE(int unary, (void));
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_PROTOTYPE(int factor, (void));
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_PROTOTYPE(int constant, (void));
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_PROTOTYPE(int num, (void));
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_PROTOTYPE(int geteql, (void));
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_PROTOTYPE(int getrel, (void));
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_PROTOTYPE(int skipws, (void));
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_PROTOTYPE(int experr, (char *msg ));
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/* look.c */
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_PROTOTYPE(int hash, (char *name ));
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_PROTOTYPE(ndptr lookup, (char *name ));
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_PROTOTYPE(ndptr addent, (char *name ));
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_PROTOTYPE(void remhash, (char *name, int all ));
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_PROTOTYPE(void freent, (ndptr p ));
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/* main.c */
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_PROTOTYPE(int main, (int argc, char *argv []));
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_PROTOTYPE(void macro, (void));
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_PROTOTYPE(ndptr inspect, (char *tp ));
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_PROTOTYPE(void initm4, (void));
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_PROTOTYPE(void initkwds, (void));
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/* misc.c */
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_PROTOTYPE(int indx, (char *s1, char *s2 ));
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_PROTOTYPE(void putback, (int c ));
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_PROTOTYPE(void pbstr, (char *s ));
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_PROTOTYPE(void pbnum, (int n ));
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_PROTOTYPE(void chrsave, (int c ));
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_PROTOTYPE(void getdiv, (int ind ));
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_PROTOTYPE(void error, (char *s ));
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_PROTOTYPE(void onintr, (int s ));
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_PROTOTYPE(void killdiv, (void));
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_PROTOTYPE(char *strsave, (char *s ));
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_PROTOTYPE(void usage, (void));
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/* serv.c */
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_PROTOTYPE(void expand, (char *argv [], int argc ));
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_PROTOTYPE(void dodefine, (char *name, char *defn ));
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_PROTOTYPE(void dodefn, (char *name ));
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_PROTOTYPE(void dopushdef, (char *name, char *defn ));
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_PROTOTYPE(void dodump, (char *argv [], int argc ));
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_PROTOTYPE(void doifelse, (char *argv [], int argc ));
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_PROTOTYPE(int doincl, (char *ifile ));
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_PROTOTYPE(int dopaste, (char *pfile ));
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_PROTOTYPE(void dochq, (char *argv [], int argc ));
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_PROTOTYPE(void dochc, (char *argv [], int argc ));
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_PROTOTYPE(void dodiv, (int n ));
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_PROTOTYPE(void doundiv, (char *argv [], int argc ));
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_PROTOTYPE(void dosub, (char *argv [], int argc ));
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_PROTOTYPE(void map, (char *dest, char *src, char *from, char *to ));
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