166 lines
4.7 KiB
C
166 lines
4.7 KiB
C
/* $Id$ */
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#include <stdio.h>
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#define INS 32768 /* input buffer */
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#define OBS 4096 /* outbut buffer */
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#define NARG 32 /* Max number arguments to a macro */
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#define NINCLUDE 32 /* Max number of include directories (-I) */
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#define NIF 32 /* depth of nesting of #if */
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#ifndef EOF
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#define EOF (-1)
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#endif
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#ifndef NULL
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#define NULL 0
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#endif
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#ifndef __alpha
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typedef unsigned char uchar;
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#endif
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enum toktype { END, UNCLASS, NAME, NUMBER, STRING, CCON, NL, WS, DSHARP,
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EQ, NEQ, LEQ, GEQ, LSH, RSH, LAND, LOR, PPLUS, MMINUS,
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ARROW, SBRA, SKET, LP, RP, DOT, AND, STAR, PLUS, MINUS,
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TILDE, NOT, SLASH, PCT, LT, GT, CIRC, OR, QUEST,
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COLON, ASGN, COMMA, SHARP, SEMIC, CBRA, CKET,
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ASPLUS, ASMINUS, ASSTAR, ASSLASH, ASPCT, ASCIRC, ASLSH,
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ASRSH, ASOR, ASAND, ELLIPS,
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DSHARP1, NAME1, DEFINED, UMINUS };
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enum kwtype { KIF, KIFDEF, KIFNDEF, KELIF, KELSE, KENDIF, KINCLUDE, KDEFINE,
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KUNDEF, KLINE, KERROR, KWARNING, KPRAGMA, KDEFINED,
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KLINENO, KFILE, KDATE, KTIME, KSTDC, KEVAL };
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#define ISDEFINED 01 /* has #defined value */
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#define ISKW 02 /* is PP keyword */
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#define ISUNCHANGE 04 /* can't be #defined in PP */
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#define ISMAC 010 /* builtin macro, e.g. __LINE__ */
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#define ISVARMAC 020 /* variadic macro */
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#define EOB 0xFE /* sentinel for end of input buffer */
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#define EOFC 0xFD /* sentinel for end of input file */
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#define XPWS 1 /* token flag: white space to assure token sep. */
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enum { Notinmacro, Inmacro };
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typedef struct token {
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unsigned char type;
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unsigned char flag;
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unsigned short hideset;
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unsigned int wslen;
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unsigned int len;
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uchar *t;
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} Token;
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typedef struct tokenrow {
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Token *tp; /* current one to scan */
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Token *bp; /* base (allocated value) */
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Token *lp; /* last+1 token used */
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int max; /* number allocated */
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} Tokenrow;
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typedef struct source {
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char *filename; /* name of file of the source */
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int line; /* current line number */
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int lineinc; /* adjustment for \\n lines */
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uchar *inb; /* input buffer */
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uchar *inp; /* input pointer */
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uchar *inl; /* end of input */
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FILE* fd; /* input source */
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int ifdepth; /* conditional nesting in include */
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struct source *next; /* stack for #include */
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} Source;
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typedef struct nlist {
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struct nlist *next;
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uchar *name;
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int len;
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Tokenrow *vp; /* value as macro */
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Tokenrow *ap; /* list of argument names, if any */
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char val; /* value as preprocessor name */
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char flag; /* is defined, is pp name */
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} Nlist;
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typedef struct includelist {
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char deleted;
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char always;
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char *file;
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} Includelist;
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#define new(t) (t *)domalloc(sizeof(t))
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#define quicklook(a,b) (namebit[(a)&077] & (1<<((b)&037)))
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#define quickset(a,b) namebit[(a)&077] |= (1<<((b)&037))
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extern unsigned long namebit[077+1];
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enum errtype { WARNING, ERROR, FATAL };
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void expandlex(void);
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void fixlex(void);
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void setup(int, char **);
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int gettokens(Tokenrow *, int);
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int comparetokens(Tokenrow *, Tokenrow *);
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Source *setsource(char *, FILE *, char *);
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void unsetsource(void);
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void puttokens(Tokenrow *);
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void process(Tokenrow *);
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void *dorealloc(void *, int);
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void *domalloc(int);
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void dofree(void *);
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void error(enum errtype, char *, ...);
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void flushout(void);
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int fillbuf(Source *);
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int trigraph(Source *);
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int foldline(Source *);
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Nlist *lookup(Token *, int);
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void control(Tokenrow *);
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void dodefine(Tokenrow *);
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void doadefine(Tokenrow *, int);
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void doinclude(Tokenrow *);
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void doif(Tokenrow *, enum kwtype);
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void expand(Tokenrow *, Nlist *, int);
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void builtin(Tokenrow *, int);
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int gatherargs(Tokenrow *, Tokenrow **, int, int *);
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void substargs(Nlist *, Tokenrow *, Tokenrow **);
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void expandrow(Tokenrow *, char *, int);
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void maketokenrow(int, Tokenrow *);
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Tokenrow *copytokenrow(Tokenrow *, Tokenrow *);
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Token *growtokenrow(Tokenrow *);
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Tokenrow *normtokenrow(Tokenrow *);
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void adjustrow(Tokenrow *, int);
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void movetokenrow(Tokenrow *, Tokenrow *);
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void insertrow(Tokenrow *, int, Tokenrow *);
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void peektokens(Tokenrow *, char *);
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void doconcat(Tokenrow *);
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Tokenrow *stringify(Tokenrow *);
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int lookuparg(Nlist *, Token *);
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long eval(Tokenrow *, int);
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void genline(void);
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void setempty(Tokenrow *);
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void makespace(Tokenrow *);
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char *outnum(char *, int);
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int digit(int);
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uchar *newstring(uchar *, int, int);
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int checkhideset(int, Nlist *);
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void prhideset(int);
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int newhideset(int, Nlist *);
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int unionhideset(int, int);
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void iniths(void);
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void setobjname(char *);
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#define rowlen(tokrow) ((tokrow)->lp - (tokrow)->bp)
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extern char *outptr;
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extern Token nltoken;
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extern Source *cursource;
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extern char *curtime;
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extern int incdepth;
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extern int ifdepth;
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extern int ifsatisfied[NIF];
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extern int Mflag;
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extern int skipping;
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extern int verbose;
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extern int Cplusplus;
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extern Nlist *kwdefined;
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extern Includelist includelist[NINCLUDE];
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extern char wd[];
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#define memmove mymemmove
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extern void *memmove(void *dp, const void *sp, size_t n);
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