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, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 23 /* 24 * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 25 * Use is subject to license terms. 26 */ 27 28 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */ 29 /* All Rights Reserved */ 30 31 #ifndef AWK_H 32 #define AWK_H 33 34 #pragma ident "%Z%%M% %I% %E% SMI" 35 36 #include <sys/types.h> 37 #include <ctype.h> 38 #include <stdio.h> 39 #include <stdlib.h> 40 #include <string.h> 41 #include <libintl.h> 42 #include <limits.h> 43 44 typedef double Awkfloat; 45 typedef unsigned char uchar; 46 47 #define xfree(a) { if ((a) != NULL) { free(a); a = NULL; } } 48 49 #define DEBUG 50 #ifdef DEBUG 51 /* uses have to be doubly parenthesized */ 52 #define dprintf(x) if (dbg) (void) printf x 53 #else 54 #define dprintf(x) 55 #endif 56 57 extern char errbuf[200]; 58 extern void error(int, char *); 59 #define ERROR (void) snprintf(errbuf, sizeof (errbuf), 60 /*CSTYLED*/ 61 #define FATAL ), error(1, errbuf) 62 /*CSTYLED*/ 63 #define WARNING ), error(0, errbuf) 64 /*CSTYLED*/ 65 #define SYNTAX ), yyerror(errbuf) 66 /*CSTYLED*/ 67 #define CONT ) 68 69 extern int compile_time; /* 1 if compiling, 0 if running */ 70 71 #define FLD_INCR 64 72 #define LINE_INCR 256 73 74 /* ensure that there is extra 1 byte in the buffer */ 75 #define expand_buf(p, n, r) \ 76 if (*(n) == 0 || (r) >= (*(n) - 1)) r_expand_buf(p, n, r) 77 78 extern uchar **FS; 79 extern uchar **RS; 80 extern uchar **ORS; 81 extern uchar **OFS; 82 extern uchar **OFMT; 83 extern Awkfloat *NR; 84 extern Awkfloat *FNR; 85 extern Awkfloat *NF; 86 extern uchar **FILENAME; 87 extern uchar **SUBSEP; 88 extern Awkfloat *RSTART; 89 extern Awkfloat *RLENGTH; 90 91 extern uchar *record; 92 extern size_t record_size; 93 extern int errorflag; 94 extern int donefld; /* 1 if record broken into fields */ 95 extern int donerec; /* 1 if record is valid (no fld has changed */ 96 97 extern uchar *patbeg; /* beginning of pattern matched */ 98 extern int patlen; /* length. set in b.c */ 99 100 /* Cell: all information about a variable or constant */ 101 102 typedef struct Cell { 103 uchar ctype; /* OCELL, OBOOL, OJUMP, etc. */ 104 uchar csub; /* CCON, CTEMP, CFLD, etc. */ 105 uchar *nval; /* name, for variables only */ 106 uchar *sval; /* string value */ 107 Awkfloat fval; /* value as number */ 108 unsigned tval; 109 /* type info: STR|NUM|ARR|FCN|FLD|CON|DONTFREE */ 110 struct Cell *cnext; /* ptr to next if chained */ 111 } Cell; 112 113 typedef struct { /* symbol table array */ 114 int nelem; /* elements in table right now */ 115 int size; /* size of tab */ 116 Cell **tab; /* hash table pointers */ 117 } Array; 118 119 #define NSYMTAB 50 /* initial size of a symbol table */ 120 extern Array *symtab, *makesymtab(int); 121 extern Cell *setsymtab(uchar *, uchar *, Awkfloat, unsigned int, Array *); 122 extern Cell *lookup(uchar *, Array *); 123 124 extern Cell *recloc; /* location of input record */ 125 extern Cell *nrloc; /* NR */ 126 extern Cell *fnrloc; /* FNR */ 127 extern Cell *nfloc; /* NF */ 128 extern Cell *rstartloc; /* RSTART */ 129 extern Cell *rlengthloc; /* RLENGTH */ 130 131 /* Cell.tval values: */ 132 #define NUM 01 /* number value is valid */ 133 #define STR 02 /* string value is valid */ 134 #define DONTFREE 04 /* string space is not freeable */ 135 #define CON 010 /* this is a constant */ 136 #define ARR 020 /* this is an array */ 137 #define FCN 040 /* this is a function name */ 138 #define FLD 0100 /* this is a field $1, $2, ... */ 139 #define REC 0200 /* this is $0 */ 140 141 #define freeable(p) (!((p)->tval & DONTFREE)) 142 143 extern Awkfloat setfval(Cell *, Awkfloat), getfval(Cell *), r_getfval(Cell *); 144 extern uchar *setsval(Cell *, uchar *), *getsval(Cell *), *r_getsval(Cell *); 145 extern uchar *tostring(uchar *), *tokname(int), *qstring(uchar *, int); 146 147 #define getfval(p) \ 148 (((p)->tval & (ARR|FLD|REC|NUM)) == NUM ? (p)->fval : r_getfval(p)) 149 #define getsval(p) \ 150 (((p)->tval & (ARR|FLD|REC|STR)) == STR ? (p)->sval : r_getsval(p)) 151 152 /* function types */ 153 #define FLENGTH 1 154 #define FSQRT 2 155 #define FEXP 3 156 #define FLOG 4 157 #define FINT 5 158 #define FSYSTEM 6 159 #define FRAND 7 160 #define FSRAND 8 161 #define FSIN 9 162 #define FCOS 10 163 #define FATAN 11 164 #define FTOUPPER 12 165 #define FTOLOWER 13 166 167 /* Node: parse tree is made of nodes, with Cell's at bottom */ 168 169 typedef struct Node { 170 int ntype; 171 struct Node *nnext; 172 off_t lineno; 173 int nobj; 174 struct Node *narg[1]; 175 /* variable: actual size set by calling malloc */ 176 } Node; 177 178 #define NIL ((Node *)0) 179 180 extern Node *winner; 181 extern Node *nullstat; 182 extern Node *nullnode; 183 184 /* ctypes */ 185 #define OCELL 1 186 #define OBOOL 2 187 #define OJUMP 3 188 189 /* Cell subtypes: csub */ 190 #define CFREE 7 191 #define CCOPY 6 192 #define CCON 5 193 #define CTEMP 4 194 #define CNAME 3 195 #define CVAR 2 196 #define CFLD 1 197 198 /* bool subtypes */ 199 #define BTRUE 11 200 #define BFALSE 12 201 202 /* jump subtypes */ 203 #define JEXIT 21 204 #define JNEXT 22 205 #define JBREAK 23 206 #define JCONT 24 207 #define JRET 25 208 209 /* node types */ 210 #define NVALUE 1 211 #define NSTAT 2 212 #define NEXPR 3 213 #define NFIELD 4 214 215 extern Cell *(*proctab[])(Node **, int); 216 extern Cell *nullproc(Node **, int); 217 extern int pairstack[], paircnt; 218 219 extern Node *stat1(int, Node *), *stat2(int, Node *, Node *); 220 extern Node *stat3(int, Node *, Node *, Node *); 221 extern Node *stat4(int, Node *, Node *, Node *, Node *); 222 extern Node *pa2stat(Node *, Node *, Node *); 223 extern Node *op1(int, Node *), *op2(int, Node *, Node *); 224 extern Node *op3(int, Node *, Node *, Node *); 225 extern Node *op4(int, Node *, Node *, Node *, Node *); 226 extern Node *linkum(Node *, Node *), *valtonode(Cell *, int); 227 extern Node *rectonode(void), *exptostat(Node *); 228 extern Node *makearr(Node *); 229 230 #define notlegal(n) \ 231 (n <= FIRSTTOKEN || n >= LASTTOKEN || proctab[n-FIRSTTOKEN] == nullproc) 232 #define isvalue(n) ((n)->ntype == NVALUE) 233 #define isexpr(n) ((n)->ntype == NEXPR) 234 #define isjump(n) ((n)->ctype == OJUMP) 235 #define isexit(n) ((n)->csub == JEXIT) 236 #define isbreak(n) ((n)->csub == JBREAK) 237 #define iscont(n) ((n)->csub == JCONT) 238 #define isnext(n) ((n)->csub == JNEXT) 239 #define isret(n) ((n)->csub == JRET) 240 #define isstr(n) ((n)->tval & STR) 241 #define isnum(n) ((n)->tval & NUM) 242 #define isarr(n) ((n)->tval & ARR) 243 #define isfunc(n) ((n)->tval & FCN) 244 #define istrue(n) ((n)->csub == BTRUE) 245 #define istemp(n) ((n)->csub == CTEMP) 246 247 #define NCHARS (256+1) 248 #define NSTATES 32 249 250 typedef struct rrow { 251 int ltype; 252 int lval; 253 int *lfollow; 254 } rrow; 255 256 typedef struct fa { 257 uchar *restr; 258 int anchor; 259 int use; 260 uchar gototab[NSTATES][NCHARS]; 261 int *posns[NSTATES]; 262 uchar out[NSTATES]; 263 int initstat; 264 int curstat; 265 int accept; 266 int reset; 267 struct rrow re[1]; 268 } fa; 269 270 /* b.c */ 271 extern fa *makedfa(uchar *, int); 272 extern int nematch(fa *, uchar *); 273 extern int match(fa *, uchar *); 274 extern int pmatch(fa *, uchar *); 275 276 /* lib.c */ 277 extern int isclvar(uchar *); 278 extern int is_number(uchar *); 279 extern void setclvar(uchar *); 280 extern int readrec(uchar **, size_t *, FILE *); 281 extern void bracecheck(void); 282 extern void syminit(void); 283 extern void yyerror(char *); 284 extern void fldbld(void); 285 extern void recbld(void); 286 extern int getrec(uchar **, size_t *); 287 extern Cell *fieldadr(int); 288 extern void newfld(int); 289 extern Cell *getfld(int); 290 extern int fldidx(Cell *); 291 extern double errcheck(double, char *); 292 extern void fpecatch(int); 293 extern void init_buf(uchar **, size_t *, size_t); 294 extern void adjust_buf(uchar **, size_t); 295 extern void r_expand_buf(uchar **, size_t *, size_t); 296 297 extern int donefld; 298 extern int donerec; 299 extern uchar *recdata; 300 extern uchar *record; 301 extern size_t record_size; 302 303 /* main.c */ 304 extern int dbg; 305 extern uchar *cmdname; 306 extern uchar *lexprog; 307 extern int compile_time; 308 extern char radixpoint; 309 310 /* tran.c */ 311 extern void syminit(void); 312 extern void arginit(int, uchar **); 313 extern void envinit(uchar **); 314 extern void freesymtab(Cell *); 315 extern void freeelem(Cell *, uchar *); 316 extern void funnyvar(Cell *, char *); 317 extern int hash(uchar *, int); 318 extern Awkfloat *ARGC; 319 320 /* run.c */ 321 extern void run(Node *); 322 323 extern int paircnt; 324 extern Node *winner; 325 326 #ifndef input 327 extern int input(void); 328 #endif 329 extern int yyparse(void); 330 extern FILE *yyin; 331 extern off_t lineno; 332 333 /* proc */ 334 extern Cell *nullproc(Node **, int); 335 extern Cell *program(Node **, int); 336 extern Cell *boolop(Node **, int); 337 extern Cell *relop(Node **, int); 338 extern Cell *array(Node **, int); 339 extern Cell *indirect(Node **, int); 340 extern Cell *substr(Node **, int); 341 extern Cell *sub(Node **, int); 342 extern Cell *gsub(Node **, int); 343 extern Cell *sindex(Node **, int); 344 extern Cell *asprintf(Node **, int); 345 extern Cell *arith(Node **, int); 346 extern Cell *incrdecr(Node **, int); 347 extern Cell *cat(Node **, int); 348 extern Cell *pastat(Node **, int); 349 extern Cell *dopa2(Node **, int); 350 extern Cell *matchop(Node **, int); 351 extern Cell *intest(Node **, int); 352 extern Cell *aprintf(Node **, int); 353 extern Cell *print(Node **, int); 354 extern Cell *closefile(Node **, int); 355 extern Cell *delete(Node **, int); 356 extern Cell *split(Node **, int); 357 extern Cell *assign(Node **, int); 358 extern Cell *condexpr(Node **, int); 359 extern Cell *ifstat(Node **, int); 360 extern Cell *whilestat(Node **, int); 361 extern Cell *forstat(Node **, int); 362 extern Cell *dostat(Node **, int); 363 extern Cell *instat(Node **, int); 364 extern Cell *jump(Node **, int); 365 extern Cell *bltin(Node **, int); 366 extern Cell *call(Node **, int); 367 extern Cell *arg(Node **, int); 368 extern Cell *getnf(Node **, int); 369 extern Cell *getline(Node **, int); 370 371 #endif /* AWK_H */ 372