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 2006 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */ 28 /* All Rights Reserved */ 29 30 #ifndef AWK_H 31 #define AWK_H 32 33 #pragma ident "%Z%%M% %I% %E% SMI" 34 35 #include <sys/types.h> 36 #include <ctype.h> 37 #include <stdio.h> 38 #include <stdlib.h> 39 #include <string.h> 40 #include <libintl.h> 41 #include <limits.h> 42 43 typedef double Awkfloat; 44 typedef unsigned char uchar; 45 46 #define xfree(a) { if ((a) != NULL) { free(a); a = NULL; } } 47 48 #define DEBUG 49 #ifdef DEBUG 50 /* uses have to be doubly parenthesized */ 51 #define dprintf(x) if (dbg) (void) printf x 52 #else 53 #define dprintf(x) 54 #endif 55 56 extern char errbuf[200]; 57 extern void error(int, char *); 58 #define ERROR (void) snprintf(errbuf, sizeof (errbuf), 59 /*CSTYLED*/ 60 #define FATAL ), error(1, errbuf) 61 /*CSTYLED*/ 62 #define WARNING ), error(0, errbuf) 63 /*CSTYLED*/ 64 #define SYNTAX ), yyerror(errbuf) 65 /*CSTYLED*/ 66 #define CONT ) 67 68 extern int compile_time; /* 1 if compiling, 0 if running */ 69 70 #define FLD_INCR 64 71 #define LINE_INCR 256 72 73 /* ensure that there is extra 1 byte in the buffer */ 74 #define expand_buf(p, n, r) \ 75 if (*(n) == 0 || (r) >= (*(n) - 1)) r_expand_buf(p, n, r) 76 77 extern uchar **FS; 78 extern uchar **RS; 79 extern uchar **ORS; 80 extern uchar **OFS; 81 extern uchar **OFMT; 82 extern Awkfloat *NR; 83 extern Awkfloat *FNR; 84 extern Awkfloat *NF; 85 extern uchar **FILENAME; 86 extern uchar **SUBSEP; 87 extern Awkfloat *RSTART; 88 extern Awkfloat *RLENGTH; 89 90 extern uchar *record; 91 extern size_t record_size; 92 extern int errorflag; 93 extern int donefld; /* 1 if record broken into fields */ 94 extern int donerec; /* 1 if record is valid (no fld has changed */ 95 96 extern uchar *patbeg; /* beginning of pattern matched */ 97 extern int patlen; /* length. set in b.c */ 98 99 /* Cell: all information about a variable or constant */ 100 101 typedef struct Cell { 102 uchar ctype; /* OCELL, OBOOL, OJUMP, etc. */ 103 uchar csub; /* CCON, CTEMP, CFLD, etc. */ 104 uchar *nval; /* name, for variables only */ 105 uchar *sval; /* string value */ 106 Awkfloat fval; /* value as number */ 107 unsigned tval; 108 /* type info: STR|NUM|ARR|FCN|FLD|CON|DONTFREE */ 109 struct Cell *cnext; /* ptr to next if chained */ 110 } Cell; 111 112 typedef struct { /* symbol table array */ 113 int nelem; /* elements in table right now */ 114 int size; /* size of tab */ 115 Cell **tab; /* hash table pointers */ 116 } Array; 117 118 #define NSYMTAB 50 /* initial size of a symbol table */ 119 extern Array *symtab, *makesymtab(int); 120 extern Cell *setsymtab(uchar *, uchar *, Awkfloat, unsigned int, Array *); 121 extern Cell *lookup(uchar *, Array *); 122 123 extern Cell *recloc; /* location of input record */ 124 extern Cell *nrloc; /* NR */ 125 extern Cell *fnrloc; /* FNR */ 126 extern Cell *nfloc; /* NF */ 127 extern Cell *rstartloc; /* RSTART */ 128 extern Cell *rlengthloc; /* RLENGTH */ 129 130 /* Cell.tval values: */ 131 #define NUM 01 /* number value is valid */ 132 #define STR 02 /* string value is valid */ 133 #define DONTFREE 04 /* string space is not freeable */ 134 #define CON 010 /* this is a constant */ 135 #define ARR 020 /* this is an array */ 136 #define FCN 040 /* this is a function name */ 137 #define FLD 0100 /* this is a field $1, $2, ... */ 138 #define REC 0200 /* this is $0 */ 139 140 #define freeable(p) (!((p)->tval & DONTFREE)) 141 142 extern Awkfloat setfval(Cell *, Awkfloat), getfval(Cell *), r_getfval(Cell *); 143 extern uchar *setsval(Cell *, uchar *), *getsval(Cell *), *r_getsval(Cell *); 144 extern uchar *tostring(uchar *), *tokname(int), *qstring(uchar *, int); 145 146 #define getfval(p) \ 147 (((p)->tval & (ARR|FLD|REC|NUM)) == NUM ? (p)->fval : r_getfval(p)) 148 #define getsval(p) \ 149 (((p)->tval & (ARR|FLD|REC|STR)) == STR ? (p)->sval : r_getsval(p)) 150 151 /* function types */ 152 #define FLENGTH 1 153 #define FSQRT 2 154 #define FEXP 3 155 #define FLOG 4 156 #define FINT 5 157 #define FSYSTEM 6 158 #define FRAND 7 159 #define FSRAND 8 160 #define FSIN 9 161 #define FCOS 10 162 #define FATAN 11 163 #define FTOUPPER 12 164 #define FTOLOWER 13 165 166 /* Node: parse tree is made of nodes, with Cell's at bottom */ 167 168 typedef struct Node { 169 int ntype; 170 struct Node *nnext; 171 off_t lineno; 172 int nobj; 173 struct Node *narg[1]; 174 /* variable: actual size set by calling malloc */ 175 } Node; 176 177 #define NIL ((Node *)0) 178 179 extern Node *winner; 180 extern Node *nullstat; 181 extern Node *nullnode; 182 183 /* ctypes */ 184 #define OCELL 1 185 #define OBOOL 2 186 #define OJUMP 3 187 188 /* Cell subtypes: csub */ 189 #define CFREE 7 190 #define CCOPY 6 191 #define CCON 5 192 #define CTEMP 4 193 #define CNAME 3 194 #define CVAR 2 195 #define CFLD 1 196 197 /* bool subtypes */ 198 #define BTRUE 11 199 #define BFALSE 12 200 201 /* jump subtypes */ 202 #define JEXIT 21 203 #define JNEXT 22 204 #define JBREAK 23 205 #define JCONT 24 206 #define JRET 25 207 208 /* node types */ 209 #define NVALUE 1 210 #define NSTAT 2 211 #define NEXPR 3 212 #define NFIELD 4 213 214 extern Cell *(*proctab[])(Node **, int); 215 extern Cell *nullproc(Node **, int); 216 extern int pairstack[], paircnt; 217 218 extern Node *stat1(int, Node *), *stat2(int, Node *, Node *); 219 extern Node *stat3(int, Node *, Node *, Node *); 220 extern Node *stat4(int, Node *, Node *, Node *, Node *); 221 extern Node *pa2stat(Node *, Node *, Node *); 222 extern Node *op1(int, Node *), *op2(int, Node *, Node *); 223 extern Node *op3(int, Node *, Node *, Node *); 224 extern Node *op4(int, Node *, Node *, Node *, Node *); 225 extern Node *linkum(Node *, Node *), *valtonode(Cell *, int); 226 extern Node *rectonode(void), *exptostat(Node *); 227 extern Node *makearr(Node *); 228 229 #define notlegal(n) \ 230 (n <= FIRSTTOKEN || n >= LASTTOKEN || proctab[n-FIRSTTOKEN] == nullproc) 231 #define isvalue(n) ((n)->ntype == NVALUE) 232 #define isexpr(n) ((n)->ntype == NEXPR) 233 #define isjump(n) ((n)->ctype == OJUMP) 234 #define isexit(n) ((n)->csub == JEXIT) 235 #define isbreak(n) ((n)->csub == JBREAK) 236 #define iscont(n) ((n)->csub == JCONT) 237 #define isnext(n) ((n)->csub == JNEXT) 238 #define isret(n) ((n)->csub == JRET) 239 #define isstr(n) ((n)->tval & STR) 240 #define isnum(n) ((n)->tval & NUM) 241 #define isarr(n) ((n)->tval & ARR) 242 #define isfunc(n) ((n)->tval & FCN) 243 #define istrue(n) ((n)->csub == BTRUE) 244 #define istemp(n) ((n)->csub == CTEMP) 245 246 #define NCHARS (256+1) 247 #define NSTATES 32 248 249 typedef struct rrow { 250 int ltype; 251 int lval; 252 int *lfollow; 253 } rrow; 254 255 typedef struct fa { 256 uchar *restr; 257 int anchor; 258 int use; 259 uchar gototab[NSTATES][NCHARS]; 260 int *posns[NSTATES]; 261 uchar out[NSTATES]; 262 int initstat; 263 int curstat; 264 int accept; 265 int reset; 266 struct rrow re[1]; 267 } fa; 268 269 /* b.c */ 270 extern fa *makedfa(uchar *, int); 271 extern int nematch(fa *, uchar *); 272 extern int match(fa *, uchar *); 273 extern int pmatch(fa *, uchar *); 274 275 /* lib.c */ 276 extern int isclvar(uchar *); 277 extern int is_number(uchar *); 278 extern void setclvar(uchar *); 279 extern int readrec(uchar **, size_t *, FILE *); 280 extern void bracecheck(void); 281 extern void syminit(void); 282 extern void yyerror(char *); 283 extern void fldbld(void); 284 extern void recbld(void); 285 extern int getrec(uchar **, size_t *); 286 extern Cell *fieldadr(int); 287 extern void newfld(int); 288 extern Cell *getfld(int); 289 extern int fldidx(Cell *); 290 extern double errcheck(double, char *); 291 extern void fpecatch(int); 292 extern void init_buf(uchar **, size_t *, size_t); 293 extern void adjust_buf(uchar **, size_t); 294 extern void r_expand_buf(uchar **, size_t *, size_t); 295 296 extern int donefld; 297 extern int donerec; 298 extern uchar *record; 299 extern size_t record_size; 300 301 /* main.c */ 302 extern int dbg; 303 extern uchar *cmdname; 304 extern uchar *lexprog; 305 extern int compile_time; 306 extern char radixpoint; 307 308 /* tran.c */ 309 extern void syminit(void); 310 extern void arginit(int, uchar **); 311 extern void envinit(uchar **); 312 extern void freesymtab(Cell *); 313 extern void freeelem(Cell *, uchar *); 314 extern void funnyvar(Cell *, char *); 315 extern int hash(uchar *, int); 316 extern Awkfloat *ARGC; 317 318 /* run.c */ 319 extern void run(Node *); 320 321 extern int paircnt; 322 extern Node *winner; 323 324 #ifndef input 325 extern int input(void); 326 #endif 327 extern int yyparse(void); 328 extern FILE *yyin; 329 extern off_t lineno; 330 331 /* proc */ 332 extern Cell *nullproc(Node **, int); 333 extern Cell *program(Node **, int); 334 extern Cell *boolop(Node **, int); 335 extern Cell *relop(Node **, int); 336 extern Cell *array(Node **, int); 337 extern Cell *indirect(Node **, int); 338 extern Cell *substr(Node **, int); 339 extern Cell *sub(Node **, int); 340 extern Cell *gsub(Node **, int); 341 extern Cell *sindex(Node **, int); 342 extern Cell *asprintf(Node **, int); 343 extern Cell *arith(Node **, int); 344 extern Cell *incrdecr(Node **, int); 345 extern Cell *cat(Node **, int); 346 extern Cell *pastat(Node **, int); 347 extern Cell *dopa2(Node **, int); 348 extern Cell *matchop(Node **, int); 349 extern Cell *intest(Node **, int); 350 extern Cell *aprintf(Node **, int); 351 extern Cell *print(Node **, int); 352 extern Cell *closefile(Node **, int); 353 extern Cell *delete(Node **, int); 354 extern Cell *split(Node **, int); 355 extern Cell *assign(Node **, int); 356 extern Cell *condexpr(Node **, int); 357 extern Cell *ifstat(Node **, int); 358 extern Cell *whilestat(Node **, int); 359 extern Cell *forstat(Node **, int); 360 extern Cell *dostat(Node **, int); 361 extern Cell *instat(Node **, int); 362 extern Cell *jump(Node **, int); 363 extern Cell *bltin(Node **, int); 364 extern Cell *call(Node **, int); 365 extern Cell *arg(Node **, int); 366 extern Cell *getnf(Node **, int); 367 extern Cell *getline(Node **, int); 368 369 #endif /* AWK_H */ 370