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 2009 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 #include <sys/types.h> 34 #include <ctype.h> 35 #include <stdio.h> 36 #include <stdlib.h> 37 #include <string.h> 38 #include <libintl.h> 39 #include <limits.h> 40 41 typedef double Awkfloat; 42 typedef unsigned char uchar; 43 44 #define xfree(a) { if ((a) != NULL) { free(a); a = NULL; } } 45 46 #define DEBUG 47 #ifdef DEBUG 48 /* uses have to be doubly parenthesized */ 49 #define dprintf(x) if (dbg) (void) printf x 50 #else 51 #define dprintf(x) 52 #endif 53 54 extern char errbuf[200]; 55 extern void error(int, char *); 56 #define ERROR (void) snprintf(errbuf, sizeof (errbuf), 57 /*CSTYLED*/ 58 #define FATAL ), error(1, errbuf) 59 /*CSTYLED*/ 60 #define WARNING ), error(0, errbuf) 61 /*CSTYLED*/ 62 #define SYNTAX ), yyerror(errbuf) 63 /*CSTYLED*/ 64 #define CONT ) 65 66 extern int compile_time; /* 1 if compiling, 0 if running */ 67 68 #define FLD_INCR 64 69 #define LINE_INCR 256 70 71 /* ensure that there is extra 1 byte in the buffer */ 72 #define expand_buf(p, n, r) \ 73 if (*(n) == 0 || (r) >= (*(n) - 1)) r_expand_buf(p, n, r) 74 75 extern uchar **FS; 76 extern uchar **RS; 77 extern uchar **ORS; 78 extern uchar **OFS; 79 extern uchar **OFMT; 80 extern Awkfloat *NR; 81 extern Awkfloat *FNR; 82 extern Awkfloat *NF; 83 extern uchar **FILENAME; 84 extern uchar **SUBSEP; 85 extern Awkfloat *RSTART; 86 extern Awkfloat *RLENGTH; 87 88 extern uchar *record; 89 extern size_t record_size; 90 extern int errorflag; 91 extern int donefld; /* 1 if record broken into fields */ 92 extern int donerec; /* 1 if record is valid (no fld has changed */ 93 94 extern uchar *patbeg; /* beginning of pattern matched */ 95 extern int patlen; /* length. set in b.c */ 96 97 /* Cell: all information about a variable or constant */ 98 99 typedef struct Cell { 100 uchar ctype; /* OCELL, OBOOL, OJUMP, etc. */ 101 uchar csub; /* CCON, CTEMP, CFLD, etc. */ 102 uchar *nval; /* name, for variables only */ 103 uchar *sval; /* string value */ 104 Awkfloat fval; /* value as number */ 105 unsigned tval; 106 /* type info: STR|NUM|ARR|FCN|FLD|CON|DONTFREE */ 107 struct Cell *cnext; /* ptr to next if chained */ 108 } Cell; 109 110 typedef struct { /* symbol table array */ 111 int nelem; /* elements in table right now */ 112 int size; /* size of tab */ 113 Cell **tab; /* hash table pointers */ 114 } Array; 115 116 #define NSYMTAB 50 /* initial size of a symbol table */ 117 extern Array *symtab, *makesymtab(int); 118 extern Cell *setsymtab(uchar *, uchar *, Awkfloat, unsigned int, Array *); 119 extern Cell *lookup(uchar *, Array *); 120 121 extern Cell *recloc; /* location of input record */ 122 extern Cell *nrloc; /* NR */ 123 extern Cell *fnrloc; /* FNR */ 124 extern Cell *nfloc; /* NF */ 125 extern Cell *rstartloc; /* RSTART */ 126 extern Cell *rlengthloc; /* RLENGTH */ 127 128 /* Cell.tval values: */ 129 #define NUM 01 /* number value is valid */ 130 #define STR 02 /* string value is valid */ 131 #define DONTFREE 04 /* string space is not freeable */ 132 #define CON 010 /* this is a constant */ 133 #define ARR 020 /* this is an array */ 134 #define FCN 040 /* this is a function name */ 135 #define FLD 0100 /* this is a field $1, $2, ... */ 136 #define REC 0200 /* this is $0 */ 137 138 #define freeable(p) (!((p)->tval & DONTFREE)) 139 140 extern Awkfloat setfval(Cell *, Awkfloat), getfval(Cell *), r_getfval(Cell *); 141 extern uchar *setsval(Cell *, uchar *), *getsval(Cell *), *r_getsval(Cell *); 142 extern uchar *tostring(uchar *), *tokname(int), *qstring(uchar *, int); 143 144 #define getfval(p) \ 145 (((p)->tval & (ARR|FLD|REC|NUM)) == NUM ? (p)->fval : r_getfval(p)) 146 #define getsval(p) \ 147 (((p)->tval & (ARR|FLD|REC|STR)) == STR ? (p)->sval : r_getsval(p)) 148 149 /* function types */ 150 #define FLENGTH 1 151 #define FSQRT 2 152 #define FEXP 3 153 #define FLOG 4 154 #define FINT 5 155 #define FSYSTEM 6 156 #define FRAND 7 157 #define FSRAND 8 158 #define FSIN 9 159 #define FCOS 10 160 #define FATAN 11 161 #define FTOUPPER 12 162 #define FTOLOWER 13 163 164 /* Node: parse tree is made of nodes, with Cell's at bottom */ 165 166 typedef struct Node { 167 int ntype; 168 struct Node *nnext; 169 off_t lineno; 170 int nobj; 171 struct Node *narg[1]; 172 /* variable: actual size set by calling malloc */ 173 } Node; 174 175 #define NIL ((Node *)0) 176 177 extern Node *winner; 178 extern Node *nullstat; 179 extern Node *nullnode; 180 181 /* ctypes */ 182 #define OCELL 1 183 #define OBOOL 2 184 #define OJUMP 3 185 186 /* Cell subtypes: csub */ 187 #define CFREE 7 188 #define CCOPY 6 189 #define CCON 5 190 #define CTEMP 4 191 #define CNAME 3 192 #define CVAR 2 193 #define CFLD 1 194 195 /* bool subtypes */ 196 #define BTRUE 11 197 #define BFALSE 12 198 199 /* jump subtypes */ 200 #define JEXIT 21 201 #define JNEXT 22 202 #define JBREAK 23 203 #define JCONT 24 204 #define JRET 25 205 206 /* node types */ 207 #define NVALUE 1 208 #define NSTAT 2 209 #define NEXPR 3 210 #define NFIELD 4 211 212 extern Cell *(*proctab[])(Node **, int); 213 extern Cell *nullproc(Node **, int); 214 extern int pairstack[], paircnt; 215 216 extern Node *stat1(int, Node *), *stat2(int, Node *, Node *); 217 extern Node *stat3(int, Node *, Node *, Node *); 218 extern Node *stat4(int, Node *, Node *, Node *, Node *); 219 extern Node *pa2stat(Node *, Node *, Node *); 220 extern Node *op1(int, Node *), *op2(int, Node *, Node *); 221 extern Node *op3(int, Node *, Node *, Node *); 222 extern Node *op4(int, Node *, Node *, Node *, Node *); 223 extern Node *linkum(Node *, Node *), *valtonode(Cell *, int); 224 extern Node *rectonode(void), *exptostat(Node *); 225 extern Node *makearr(Node *); 226 227 #define notlegal(n) \ 228 (n <= FIRSTTOKEN || n >= LASTTOKEN || proctab[n-FIRSTTOKEN] == nullproc) 229 #define isvalue(n) ((n)->ntype == NVALUE) 230 #define isexpr(n) ((n)->ntype == NEXPR) 231 #define isjump(n) ((n)->ctype == OJUMP) 232 #define isexit(n) ((n)->csub == JEXIT) 233 #define isbreak(n) ((n)->csub == JBREAK) 234 #define iscont(n) ((n)->csub == JCONT) 235 #define isnext(n) ((n)->csub == JNEXT) 236 #define isret(n) ((n)->csub == JRET) 237 #define isstr(n) ((n)->tval & STR) 238 #define isnum(n) ((n)->tval & NUM) 239 #define isarr(n) ((n)->tval & ARR) 240 #define isfunc(n) ((n)->tval & FCN) 241 #define istrue(n) ((n)->csub == BTRUE) 242 #define istemp(n) ((n)->csub == CTEMP) 243 244 #define NCHARS (256+1) 245 #define NSTATES 32 246 247 typedef struct rrow { 248 int ltype; 249 int lval; 250 int *lfollow; 251 } rrow; 252 253 typedef struct fa { 254 uchar *restr; 255 int anchor; 256 int use; 257 uchar gototab[NSTATES][NCHARS]; 258 int *posns[NSTATES]; 259 uchar out[NSTATES]; 260 int initstat; 261 int curstat; 262 int accept; 263 int reset; 264 struct rrow re[1]; 265 } fa; 266 267 /* b.c */ 268 extern fa *makedfa(uchar *, int); 269 extern int nematch(fa *, uchar *); 270 extern int match(fa *, uchar *); 271 extern int pmatch(fa *, uchar *); 272 273 /* lib.c */ 274 extern int isclvar(uchar *); 275 extern int is_number(uchar *); 276 extern void setclvar(uchar *); 277 extern int readrec(uchar **, size_t *, FILE *); 278 extern void bracecheck(void); 279 extern void syminit(void); 280 extern void yyerror(char *); 281 extern void fldbld(void); 282 extern void recbld(void); 283 extern int getrec(uchar **, size_t *); 284 extern Cell *fieldadr(int); 285 extern void newfld(int); 286 extern Cell *getfld(int); 287 extern int fldidx(Cell *); 288 extern double errcheck(double, char *); 289 extern void fpecatch(int); 290 extern void init_buf(uchar **, size_t *, size_t); 291 extern void adjust_buf(uchar **, size_t); 292 extern void r_expand_buf(uchar **, size_t *, size_t); 293 294 extern int donefld; 295 extern int donerec; 296 extern uchar *record; 297 extern size_t record_size; 298 299 /* main.c */ 300 extern int dbg; 301 extern uchar *cmdname; 302 extern uchar *lexprog; 303 extern int compile_time; 304 extern char radixpoint; 305 306 /* tran.c */ 307 extern void syminit(void); 308 extern void arginit(int, uchar **); 309 extern void envinit(uchar **); 310 extern void freesymtab(Cell *); 311 extern void freeelem(Cell *, uchar *); 312 extern void funnyvar(Cell *, char *); 313 extern int hash(uchar *, int); 314 extern Awkfloat *ARGC; 315 316 /* run.c */ 317 extern void run(Node *); 318 319 extern int paircnt; 320 extern Node *winner; 321 322 #ifndef input 323 extern int input(void); 324 #endif 325 extern int yyparse(void); 326 extern FILE *yyin; 327 extern off_t lineno; 328 329 /* proc */ 330 extern Cell *nullproc(Node **, int); 331 extern Cell *program(Node **, int); 332 extern Cell *boolop(Node **, int); 333 extern Cell *relop(Node **, int); 334 extern Cell *array(Node **, int); 335 extern Cell *indirect(Node **, int); 336 extern Cell *substr(Node **, int); 337 extern Cell *sub(Node **, int); 338 extern Cell *gsub(Node **, int); 339 extern Cell *sindex(Node **, int); 340 extern Cell *a_sprintf(Node **, int); 341 extern Cell *arith(Node **, int); 342 extern Cell *incrdecr(Node **, int); 343 extern Cell *cat(Node **, int); 344 extern Cell *pastat(Node **, int); 345 extern Cell *dopa2(Node **, int); 346 extern Cell *matchop(Node **, int); 347 extern Cell *intest(Node **, int); 348 extern Cell *aprintf(Node **, int); 349 extern Cell *print(Node **, int); 350 extern Cell *closefile(Node **, int); 351 extern Cell *delete(Node **, int); 352 extern Cell *split(Node **, int); 353 extern Cell *assign(Node **, int); 354 extern Cell *condexpr(Node **, int); 355 extern Cell *ifstat(Node **, int); 356 extern Cell *whilestat(Node **, int); 357 extern Cell *forstat(Node **, int); 358 extern Cell *dostat(Node **, int); 359 extern Cell *instat(Node **, int); 360 extern Cell *jump(Node **, int); 361 extern Cell *bltin(Node **, int); 362 extern Cell *call(Node **, int); 363 extern Cell *arg(Node **, int); 364 extern Cell *getnf(Node **, int); 365 extern Cell *getline(Node **, int); 366 367 #endif /* AWK_H */ 368
Indexes created Fri Nov 27 08:09:20 UTC 2009
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