1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright (c) 1989, 2010, Oracle and/or its affiliates. All rights reserved. 24 */ 25 26 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */ 27 /* All Rights Reserved */ 28 29 #ifndef AWK_H 30 #define AWK_H 31 32 #include <sys/types.h> 33 #include <ctype.h> 34 #include <stdio.h> 35 #include <stdlib.h> 36 #include <string.h> 37 #include <libintl.h> 38 #include <limits.h> 39 40 typedef double Awkfloat; 41 typedef unsigned char uchar; 42 43 #define xfree(a) { if ((a) != NULL) { free(a); a = NULL; } } 44 45 #define DEBUG 46 #ifdef DEBUG 47 /* uses have to be doubly parenthesized */ 48 #define dprintf(x) if (dbg) (void) printf x 49 #else 50 #define dprintf(x) 51 #endif 52 53 extern char errbuf[200]; 54 extern void error(int, char *); 55 #define ERROR (void) snprintf(errbuf, sizeof (errbuf), 56 /*CSTYLED*/ 57 #define FATAL ), error(1, errbuf) 58 /*CSTYLED*/ 59 #define WARNING ), error(0, errbuf) 60 /*CSTYLED*/ 61 #define SYNTAX ), yyerror(errbuf) 62 /*CSTYLED*/ 63 #define CONT ) 64 65 extern int compile_time; /* 1 if compiling, 0 if running */ 66 67 #define FLD_INCR 64 68 #define LINE_INCR 256 69 70 /* ensure that there is extra 1 byte in the buffer */ 71 #define expand_buf(p, n, r) \ 72 if (*(n) == 0 || (r) >= (*(n) - 1)) r_expand_buf(p, n, r) 73 74 extern uchar **FS; 75 extern uchar **RS; 76 extern uchar **ORS; 77 extern uchar **OFS; 78 extern uchar **OFMT; 79 extern Awkfloat *NR; 80 extern Awkfloat *FNR; 81 extern Awkfloat *NF; 82 extern uchar **FILENAME; 83 extern uchar **SUBSEP; 84 extern Awkfloat *RSTART; 85 extern Awkfloat *RLENGTH; 86 87 extern uchar *record; 88 extern size_t record_size; 89 extern int errorflag; 90 extern int donefld; /* 1 if record broken into fields */ 91 extern int donerec; /* 1 if record is valid (no fld has changed */ 92 93 extern uchar *patbeg; /* beginning of pattern matched */ 94 extern int patlen; /* length. set in b.c */ 95 96 /* Cell: all information about a variable or constant */ 97 98 typedef struct Cell { 99 uchar ctype; /* OCELL, OBOOL, OJUMP, etc. */ 100 uchar csub; /* CCON, CTEMP, CFLD, etc. */ 101 uchar *nval; /* name, for variables only */ 102 uchar *sval; /* string value */ 103 Awkfloat fval; /* value as number */ 104 unsigned tval; 105 /* type info: STR|NUM|ARR|FCN|FLD|CON|DONTFREE */ 106 struct Cell *cnext; /* ptr to next if chained */ 107 } Cell; 108 109 typedef struct { /* symbol table array */ 110 int nelem; /* elements in table right now */ 111 int size; /* size of tab */ 112 Cell **tab; /* hash table pointers */ 113 } Array; 114 115 #define NSYMTAB 50 /* initial size of a symbol table */ 116 extern Array *symtab, *makesymtab(int); 117 extern Cell *setsymtab(uchar *, uchar *, Awkfloat, unsigned int, Array *); 118 extern Cell *lookup(uchar *, Array *); 119 120 extern Cell *recloc; /* location of input record */ 121 extern Cell *nrloc; /* NR */ 122 extern Cell *fnrloc; /* FNR */ 123 extern Cell *nfloc; /* NF */ 124 extern Cell *rstartloc; /* RSTART */ 125 extern Cell *rlengthloc; /* RLENGTH */ 126 127 /* Cell.tval values: */ 128 #define NUM 01 /* number value is valid */ 129 #define STR 02 /* string value is valid */ 130 #define DONTFREE 04 /* string space is not freeable */ 131 #define CON 010 /* this is a constant */ 132 #define ARR 020 /* this is an array */ 133 #define FCN 040 /* this is a function name */ 134 #define FLD 0100 /* this is a field $1, $2, ... */ 135 #define REC 0200 /* this is $0 */ 136 137 #define freeable(p) (!((p)->tval & DONTFREE)) 138 139 extern Awkfloat setfval(Cell *, Awkfloat), getfval(Cell *), r_getfval(Cell *); 140 extern uchar *setsval(Cell *, uchar *), *getsval(Cell *), *r_getsval(Cell *); 141 extern uchar *tostring(uchar *), *tokname(int), *qstring(uchar *, int); 142 143 #define getfval(p) \ 144 (((p)->tval & (ARR|FLD|REC|NUM)) == NUM ? (p)->fval : r_getfval(p)) 145 #define getsval(p) \ 146 (((p)->tval & (ARR|FLD|REC|STR)) == STR ? (p)->sval : r_getsval(p)) 147 148 /* function types */ 149 #define FLENGTH 1 150 #define FSQRT 2 151 #define FEXP 3 152 #define FLOG 4 153 #define FINT 5 154 #define FSYSTEM 6 155 #define FRAND 7 156 #define FSRAND 8 157 #define FSIN 9 158 #define FCOS 10 159 #define FATAN 11 160 #define FTOUPPER 12 161 #define FTOLOWER 13 162 163 /* Node: parse tree is made of nodes, with Cell's at bottom */ 164 165 typedef struct Node { 166 int ntype; 167 struct Node *nnext; 168 off_t lineno; 169 int nobj; 170 struct Node *narg[1]; 171 /* variable: actual size set by calling malloc */ 172 } Node; 173 174 #define NIL ((Node *)0) 175 176 extern Node *winner; 177 extern Node *nullstat; 178 extern Node *nullnode; 179 180 /* ctypes */ 181 #define OCELL 1 182 #define OBOOL 2 183 #define OJUMP 3 184 185 /* Cell subtypes: csub */ 186 #define CFREE 7 187 #define CCOPY 6 188 #define CCON 5 189 #define CTEMP 4 190 #define CNAME 3 191 #define CVAR 2 192 #define CFLD 1 193 194 /* bool subtypes */ 195 #define BTRUE 11 196 #define BFALSE 12 197 198 /* jump subtypes */ 199 #define JEXIT 21 200 #define JNEXT 22 201 #define JBREAK 23 202 #define JCONT 24 203 #define JRET 25 204 205 /* node types */ 206 #define NVALUE 1 207 #define NSTAT 2 208 #define NEXPR 3 209 #define NFIELD 4 210 211 extern Cell *(*proctab[])(Node **, int); 212 extern Cell *nullproc(Node **, int); 213 extern int pairstack[], paircnt; 214 215 extern Node *stat1(int, Node *), *stat2(int, Node *, Node *); 216 extern Node *stat3(int, Node *, Node *, Node *); 217 extern Node *stat4(int, Node *, Node *, Node *, Node *); 218 extern Node *pa2stat(Node *, Node *, Node *); 219 extern Node *op1(int, Node *), *op2(int, Node *, Node *); 220 extern Node *op3(int, Node *, Node *, Node *); 221 extern Node *op4(int, Node *, Node *, Node *, Node *); 222 extern Node *linkum(Node *, Node *), *valtonode(Cell *, int); 223 extern Node *rectonode(void), *exptostat(Node *); 224 extern Node *makearr(Node *); 225 226 #define notlegal(n) \ 227 (n <= FIRSTTOKEN || n >= LASTTOKEN || proctab[n-FIRSTTOKEN] == nullproc) 228 #define isvalue(n) ((n)->ntype == NVALUE) 229 #define isexpr(n) ((n)->ntype == NEXPR) 230 #define isjump(n) ((n)->ctype == OJUMP) 231 #define isexit(n) ((n)->csub == JEXIT) 232 #define isbreak(n) ((n)->csub == JBREAK) 233 #define iscont(n) ((n)->csub == JCONT) 234 #define isnext(n) ((n)->csub == JNEXT) 235 #define isret(n) ((n)->csub == JRET) 236 #define isstr(n) ((n)->tval & STR) 237 #define isnum(n) ((n)->tval & NUM) 238 #define isarr(n) ((n)->tval & ARR) 239 #define isfunc(n) ((n)->tval & FCN) 240 #define istrue(n) ((n)->csub == BTRUE) 241 #define istemp(n) ((n)->csub == CTEMP) 242 243 #define NCHARS (256+1) 244 #define NSTATES 32 245 246 typedef struct rrow { 247 int ltype; 248 int lval; 249 int *lfollow; 250 } rrow; 251 252 typedef struct fa { 253 uchar *restr; 254 int anchor; 255 int use; 256 uchar gototab[NSTATES][NCHARS]; 257 int *posns[NSTATES]; 258 uchar out[NSTATES]; 259 int initstat; 260 int curstat; 261 int accept; 262 int reset; 263 struct rrow re[1]; 264 } fa; 265 266 /* b.c */ 267 extern fa *makedfa(uchar *, int); 268 extern int nematch(fa *, uchar *); 269 extern int match(fa *, uchar *); 270 extern int pmatch(fa *, uchar *); 271 272 /* lib.c */ 273 extern int isclvar(uchar *); 274 extern int is_number(uchar *); 275 extern void setclvar(uchar *); 276 extern int readrec(uchar **, size_t *, FILE *); 277 extern void bracecheck(void); 278 extern void syminit(void); 279 extern void yyerror(char *); 280 extern void fldbld(void); 281 extern void recbld(void); 282 extern int getrec(uchar **, size_t *); 283 extern Cell *fieldadr(int); 284 extern void newfld(int); 285 extern Cell *getfld(int); 286 extern int fldidx(Cell *); 287 extern double errcheck(double, char *); 288 extern void fpecatch(int); 289 extern void init_buf(uchar **, size_t *, size_t); 290 extern void adjust_buf(uchar **, size_t); 291 extern void r_expand_buf(uchar **, size_t *, size_t); 292 293 extern int donefld; 294 extern int donerec; 295 extern uchar *record; 296 extern size_t record_size; 297 298 /* main.c */ 299 extern int dbg; 300 extern uchar *cmdname; 301 extern uchar *lexprog; 302 extern int compile_time; 303 extern char radixpoint; 304 305 /* tran.c */ 306 extern void syminit(void); 307 extern void arginit(int, uchar **); 308 extern void envinit(uchar **); 309 extern void freesymtab(Cell *); 310 extern void freeelem(Cell *, uchar *); 311 extern void funnyvar(Cell *, char *); 312 extern int hash(uchar *, int); 313 extern Awkfloat *ARGC; 314 315 /* run.c */ 316 extern void run(Node *); 317 318 extern int paircnt; 319 extern Node *winner; 320 321 #ifndef input 322 extern int input(void); 323 #endif 324 extern int yyparse(void); 325 extern FILE *yyin; 326 extern off_t lineno; 327 328 /* proc */ 329 extern Cell *nullproc(Node **, int); 330 extern Cell *program(Node **, int); 331 extern Cell *boolop(Node **, int); 332 extern Cell *relop(Node **, int); 333 extern Cell *array(Node **, int); 334 extern Cell *indirect(Node **, int); 335 extern Cell *substr(Node **, int); 336 extern Cell *sub(Node **, int); 337 extern Cell *gsub(Node **, int); 338 extern Cell *sindex(Node **, int); 339 extern Cell *a_sprintf(Node **, int); 340 extern Cell *arith(Node **, int); 341 extern Cell *incrdecr(Node **, int); 342 extern Cell *cat(Node **, int); 343 extern Cell *pastat(Node **, int); 344 extern Cell *dopa2(Node **, int); 345 extern Cell *matchop(Node **, int); 346 extern Cell *intest(Node **, int); 347 extern Cell *aprintf(Node **, int); 348 extern Cell *print(Node **, int); 349 extern Cell *closefile(Node **, int); 350 extern Cell *delete(Node **, int); 351 extern Cell *split(Node **, int); 352 extern Cell *assign(Node **, int); 353 extern Cell *condexpr(Node **, int); 354 extern Cell *ifstat(Node **, int); 355 extern Cell *whilestat(Node **, int); 356 extern Cell *forstat(Node **, int); 357 extern Cell *dostat(Node **, int); 358 extern Cell *instat(Node **, int); 359 extern Cell *jump(Node **, int); 360 extern Cell *bltin(Node **, int); 361 extern Cell *call(Node **, int); 362 extern Cell *arg(Node **, int); 363 extern Cell *getnf(Node **, int); 364 extern Cell *getaline(Node **, int); 365 366 #endif /* AWK_H */ 367