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| 1 | +#define INS 32768 /* input buffer */ | |
| 2 | +#define OBS 4096 /* outbut buffer */ | |
| 3 | +#define NARG 32 /* Max number arguments to a macro */ | |
| 4 | +#define NINCLUDE 64 /* Max number of include directories (-I) */ | |
| 5 | +#define NIF 32 /* depth of nesting of #if */ | |
| 6 | +#ifndef EOF | |
| 7 | +#define EOF (-1) | |
| 8 | +#endif | |
| 9 | +#ifndef NULL | |
| 10 | +#define NULL 0 | |
| 11 | +#endif | |
| 12 | + | |
| 13 | +enum toktype { END, UNCLASS, NAME, NUMBER, STRING, CCON, NL, WS, DSHARP, | |
| 14 | + EQ, NEQ, LEQ, GEQ, LSH, RSH, LAND, LOR, PPLUS, MMINUS, | |
| 15 | + ARROW, SBRA, SKET, LP, RP, DOT, AND, STAR, PLUS, MINUS, | |
| 16 | + TILDE, NOT, SLASH, PCT, LT, GT, CIRC, OR, QUEST, | |
| 17 | + COLON, ASGN, COMMA, SHARP, SEMIC, CBRA, CKET, | |
| 18 | + ASPLUS, ASMINUS, ASSTAR, ASSLASH, ASPCT, ASCIRC, ASLSH, | |
| 19 | + ASRSH, ASOR, ASAND, ELLIPS, | |
| 20 | + DSHARP1, NAME1, DEFINED, UMINUS }; | |
| 21 | + | |
| 22 | +enum kwtype { KIF, KIFDEF, KIFNDEF, KELIF, KELSE, KENDIF, KINCLUDE, KDEFINE, | |
| 23 | + KUNDEF, KLINE, KERROR, KPRAGMA, KDEFINED, | |
| 24 | + KLINENO, KFILE, KDATE, KTIME, KSTDC, KEVAL }; | |
| 25 | + | |
| 26 | +#define ISDEFINED 01 /* has #defined value */ | |
| 27 | +#define ISKW 02 /* is PP keyword */ | |
| 28 | +#define ISUNCHANGE 04 /* can't be #defined in PP */ | |
| 29 | +#define ISMAC 010 /* builtin macro, e.g. __LINE__ */ | |
| 30 | + | |
| 31 | +#define EOB 0xFE /* sentinel for end of input buffer */ | |
| 32 | +#define EOFC 0xFD /* sentinel for end of input file */ | |
| 33 | +#define XPWS 1 /* token flag: white space to assure token sep. */ | |
| 34 | + | |
| 35 | +typedef struct token { | |
| 36 | + unsigned char type; | |
| 37 | + unsigned char flag; | |
| 38 | + unsigned short hideset; | |
| 39 | + unsigned int wslen; | |
| 40 | + unsigned int len; | |
| 41 | + uchar *t; | |
| 42 | +} Token; | |
| 43 | + | |
| 44 | +typedef struct tokenrow { | |
| 45 | + Token *tp; /* current one to scan */ | |
| 46 | + Token *bp; /* base (allocated value) */ | |
| 47 | + Token *lp; /* last+1 token used */ | |
| 48 | + int max; /* number allocated */ | |
| 49 | +} Tokenrow; | |
| 50 | + | |
| 51 | +typedef struct source { | |
| 52 | + char *filename; /* name of file of the source */ | |
| 53 | + int line; /* current line number */ | |
| 54 | + int lineinc; /* adjustment for \\n lines */ | |
| 55 | + uchar *inb; /* input buffer */ | |
| 56 | + uchar *inp; /* input pointer */ | |
| 57 | + uchar *inl; /* end of input */ | |
| 58 | + int fd; /* input source */ | |
| 59 | + int ifdepth; /* conditional nesting in include */ | |
| 60 | + struct source *next; /* stack for #include */ | |
| 61 | +} Source; | |
| 62 | + | |
| 63 | +typedef struct nlist { | |
| 64 | + struct nlist *next; | |
| 65 | + uchar *name; | |
| 66 | + int len; | |
| 67 | + Tokenrow *vp; /* value as macro */ | |
| 68 | + Tokenrow *ap; /* list of argument names, if any */ | |
| 69 | + char val; /* value as preprocessor name */ | |
| 70 | + char flag; /* is defined, is pp name */ | |
| 71 | +} Nlist; | |
| 72 | + | |
| 73 | +typedef struct includelist { | |
| 74 | + char deleted; | |
| 75 | + char always; | |
| 76 | + char *file; | |
| 77 | +} Includelist; | |
| 78 | + | |
| 79 | +#define new(t) (t *)domalloc(sizeof(t)) | |
| 80 | +#define quicklook(a,b) (namebit[(a)&077] & (1<<((b)&037))) | |
| 81 | +#define quickset(a,b) namebit[(a)&077] |= (1<<((b)&037)) | |
| 82 | +extern unsigned long namebit[077+1]; | |
| 83 | + | |
| 84 | +enum errtype { WARNING, ERROR, FATAL }; | |
| 85 | + | |
| 86 | +void expandlex(void); | |
| 87 | +void fixlex(void); | |
| 88 | +void setup(int, char **); | |
| 89 | +#define gettokens cpp_gettokens | |
| 90 | +int gettokens(Tokenrow *, int); | |
| 91 | +int comparetokens(Tokenrow *, Tokenrow *); | |
| 92 | +Source *setsource(char *, int, char *); | |
| 93 | +void unsetsource(void); | |
| 94 | +void puttokens(Tokenrow *); | |
| 95 | +void process(Tokenrow *); | |
| 96 | +void *domalloc(int); | |
| 97 | +void dofree(void *); | |
| 98 | +void error(enum errtype, char *, ...); | |
| 99 | +void flushout(void); | |
| 100 | +int fillbuf(Source *); | |
| 101 | +int trigraph(Source *); | |
| 102 | +int foldline(Source *); | |
| 103 | +Nlist *lookup(Token *, int); | |
| 104 | +void control(Tokenrow *); | |
| 105 | +void dodefine(Tokenrow *); | |
| 106 | +void doadefine(Tokenrow *, int); | |
| 107 | +void doinclude(Tokenrow *); | |
| 108 | +void doif(Tokenrow *, enum kwtype); | |
| 109 | +void expand(Tokenrow *, Nlist *); | |
| 110 | +void builtin(Tokenrow *, int); | |
| 111 | +int gatherargs(Tokenrow *, Tokenrow **, int *); | |
| 112 | +void substargs(Nlist *, Tokenrow *, Tokenrow **); | |
| 113 | +void expandrow(Tokenrow *, char *); | |
| 114 | +void maketokenrow(int, Tokenrow *); | |
| 115 | +Tokenrow *copytokenrow(Tokenrow *, Tokenrow *); | |
| 116 | +Token *growtokenrow(Tokenrow *); | |
| 117 | +Tokenrow *normtokenrow(Tokenrow *); | |
| 118 | +void adjustrow(Tokenrow *, int); | |
| 119 | +void movetokenrow(Tokenrow *, Tokenrow *); | |
| 120 | +void insertrow(Tokenrow *, int, Tokenrow *); | |
| 121 | +void peektokens(Tokenrow *, char *); | |
| 122 | +void doconcat(Tokenrow *); | |
| 123 | +Tokenrow *stringify(Tokenrow *); | |
| 124 | +int lookuparg(Nlist *, Token *); | |
| 125 | +long eval(Tokenrow *, int); | |
| 126 | +void genline(void); | |
| 127 | +void setempty(Tokenrow *); | |
| 128 | +void makespace(Tokenrow *); | |
| 129 | +char *outnum(char *, int); | |
| 130 | +int digit(int); | |
| 131 | +uchar *newstring(uchar *, int, int); | |
| 132 | +int checkhideset(int, Nlist *); | |
| 133 | +void prhideset(int); | |
| 134 | +int newhideset(int, Nlist *); | |
| 135 | +int unionhideset(int, int); | |
| 136 | +void iniths(void); | |
| 137 | +void setobjname(char *); | |
| 138 | +void clearwstab(void); | |
| 139 | +#define rowlen(tokrow) ((tokrow)->lp - (tokrow)->bp) | |
| 140 | + | |
| 141 | +extern char *outp; | |
| 142 | +extern Token nltoken; | |
| 143 | +extern Source *cursource; | |
| 144 | +extern char *curtime; | |
| 145 | +extern int incdepth; | |
| 146 | +extern int ifdepth; | |
| 147 | +extern int ifsatisfied[NIF]; | |
| 148 | +extern int Mflag; | |
| 149 | +extern int nolineinfo; | |
| 150 | +extern int skipping; | |
| 151 | +extern int verbose; | |
| 152 | +extern int Cplusplus; | |
| 153 | +extern Nlist *kwdefined; | |
| 154 | +extern Includelist includelist[NINCLUDE]; | |
| 155 | +extern char wd[]; | |