1 /* $RCSfile: arg.h,v $$Revision: 4.0.1.2 $$Date: 91/11/05 15:51:05 $
3 * Copyright (c) 1991, Larry Wall
5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
9 * Revision 4.0.1.2 91/11/05 15:51:05 lwall
10 * patch11: added eval {}
11 * patch11: added sort {} LIST
13 * Revision 4.0.1.1 91/06/07 10:18:30 lwall
14 * patch4: length($`), length($&), length($') now optimized to avoid string copy
15 * patch4: new copyright notice
16 * patch4: many, many itty-bitty portability fixes
18 * Revision 4.0 91/03/20 01:03:09 lwall
49 #define O_LEFT_SHIFT 26
50 #define O_RIGHT_SHIFT 27
63 #define O_COND_EXPR 40
67 #define O_COMPLEMENT 44
130 #define O_SYSREAD 107
131 #define O_SYSWRITE 108
144 #define O_LOCALTIME 121
146 #define O_TRUNCATE 123
168 #define O_WAITPID 145
170 #define O_EXEC_OP 147
188 #define O_SHMREAD 165
189 #define O_SHMWRITE 166
194 #define O_GETPPID 171
195 #define O_GETPGRP 172
196 #define O_SETPGRP 173
197 #define O_GETPRIORITY 174
198 #define O_SETPRIORITY 175
203 #define O_UNSHIFT 180
204 #define O_REQUIRE 181
207 #define O_FTRREAD 184
208 #define O_FTRWRITE 185
209 #define O_FTREXEC 186
210 #define O_FTEREAD 187
211 #define O_FTEWRITE 188
212 #define O_FTEEXEC 189
214 #define O_FTEOWNED 191
215 #define O_FTROWNED 192
218 #define O_FTMTIME 195
219 #define O_FTATIME 196
220 #define O_FTCTIME 197
228 #define O_SYMLINK 205
229 #define O_READLINK 206
235 #define O_FTBINARY 212
238 #define O_CONNECT 215
241 #define O_GHBYNAME 218
242 #define O_GHBYADDR 219
243 #define O_GHOSTENT 220
244 #define O_GNBYNAME 221
245 #define O_GNBYADDR 222
246 #define O_GNETENT 223
247 #define O_GPBYNAME 224
248 #define O_GPBYNUMBER 225
249 #define O_GPROTOENT 226
250 #define O_GSBYNAME 227
251 #define O_GSBYPORT 228
252 #define O_GSERVENT 229
253 #define O_SHOSTENT 230
254 #define O_SNETENT 231
255 #define O_SPROTOENT 232
256 #define O_SSERVENT 233
257 #define O_EHOSTENT 234
258 #define O_ENETENT 235
259 #define O_EPROTOENT 236
260 #define O_ESERVENT 237
261 #define O_SOCKPAIR 238
262 #define O_SHUTDOWN 239
263 #define O_GSOCKOPT 240
264 #define O_SSOCKOPT 241
265 #define O_GETSOCKNAME 242
266 #define O_GETPEERNAME 243
267 #define O_SSELECT 244
269 #define O_BINMODE 246
281 #define O_GETLOGIN 258
282 #define O_OPEN_DIR 259
283 #define O_READDIR 260
284 #define O_TELLDIR 261
285 #define O_SEEKDIR 262
286 #define O_REWINDDIR 263
287 #define O_CLOSEDIR 264
288 #define O_SYSCALL 265
291 #define O_EVALONCE 268
295 extern char *opname[];
588 #define A_LARYSTAB 17
591 #define A_WANTARRAY 20
595 #define A_DONT 32 /* or this into type to suppress evaluation */
598 extern char *argname[];
628 extern bool hoistable[];
668 union argptr arg_ptr;
670 unsigned short arg_type;
671 unsigned short arg_flags;
674 #define AF_ARYOK 1 /* op can handle multiple values here */
675 #define AF_POST 2 /* post *crement this item */
676 #define AF_PRE 4 /* pre *crement this item */
677 #define AF_UP 8 /* increment rather than decrement */
678 #define AF_COMMON 16 /* left and right have symbols in common */
679 #define AF_DEPR 32 /* an older form of the construct */
680 #define AF_LISTISH 64 /* turn into list if important */
681 #define AF_LOCAL 128 /* list of local variables */
684 * Most of the ARG pointers are used as pointers to arrays of ARG. When
685 * so used, the 0th element is special, and represents the operator to
686 * use on the list of arguments following. The arg_len in the 0th element
687 * gives the maximum argument number, and the arg_str is used to store
688 * the return value in a more-or-less static location. Sorry it's not
689 * re-entrant (yet), but it sure makes it efficient. The arg_type of the
690 * 0th element is an operator (O_*) rather than an argument type (A_*).
693 #define Nullarg Null(ARG*)
696 EXT unsigned short opargs[MAXO+1];
698 #define A(e1,e2,e3) (e1+(e2<<2)+(e3<<4))
699 #define A5(e1,e2,e3,e4,e5) (e1+(e2<<2)+(e3<<4)+(e4<<6)+(e5<<8))
700 unsigned short opargs[MAXO+1] = {
704 A(1,0,0), /* SCALAR */
705 A(0,0,0), /* ITEM2 */
706 A(0,0,0), /* ITEM3 */
707 A(1,1,0), /* CONCAT */
708 A(3,1,0), /* REPEAT */
709 A(1,0,0), /* MATCH */
710 A(1,0,0), /* NMATCH */
711 A(1,0,0), /* SUBST */
712 A(1,0,0), /* NSUBST */
713 A(1,1,0), /* ASSIGN */
714 A(1,0,0), /* LOCAL */
715 A(3,3,0), /* AASSIGN */
716 A(0,0,0), /* SASSIGN */
718 A(1,0,0), /* DEFINED */
719 A(1,0,0), /* UNDEF */
720 A(1,0,0), /* STUDY */
722 A(1,1,0), /* MULTIPLY */
723 A(1,1,0), /* DIVIDE */
724 A(1,1,0), /* MODULO */
726 A(1,1,0), /* SUBTRACT */
727 A(1,1,0), /* LEFT_SHIFT */
728 A(1,1,0), /* RIGHT_SHIFT */
736 A(1,1,0), /* BIT_AND */
738 A(1,1,0), /* BIT_OR */
741 A(1,0,0), /* COND_EXPR */
742 A(1,1,0), /* COMMA */
743 A(1,0,0), /* NEGATE */
745 A(1,0,0), /* COMPLEMENT */
746 A(1,0,0), /* SELECT */
747 A(1,0,0), /* WRITE */
748 A(1,1,1), /* DBMOPEN */
749 A(1,0,0), /* DBMCLOSE */
751 A(1,0,0), /* TRANS */
752 A(1,0,0), /* NTRANS */
753 A(1,0,0), /* CLOSE */
755 A(0,0,0), /* VALUES */
757 A(0,0,0), /* LARRAY */
758 A(0,0,0), /* ARRAY */
759 A(0,1,0), /* AELEM */
760 A(0,1,0), /* DELETE */
761 A(0,0,0), /* LHASH */
763 A(0,1,0), /* HELEM */
764 A(0,1,0), /* LAELEM */
765 A(0,1,0), /* LHELEM */
766 A(0,3,3), /* LSLICE */
767 A(0,3,0), /* ASLICE */
768 A(0,3,0), /* HSLICE */
769 A(0,3,0), /* LASLICE */
770 A(0,3,0), /* LHSLICE */
771 A(0,3,1), /* SPLICE */
774 A(0,0,0), /* SHIFT */
775 A(1,1,0), /* UNPACK */
776 A(1,0,1), /* SPLIT */
777 A(1,0,0), /* LENGTH */
778 A(3,0,0), /* SPRINTF */
779 A(1,1,1), /* SUBSTR */
791 A(0,3,0), /* DBSUBR */
792 A(1,0,0), /* CALLER */
794 A(0,3,0), /* REVERSE */
797 A(1,3,0), /* PRINTF */
798 A(1,3,0), /* PRINT */
799 A(1,0,0), /* CHDIR */
801 A(1,0,0), /* RESET */
806 A5(1,1,1,1,0), /* RECV */
808 A(1,1,3), /* SYSREAD */
809 A(1,1,3), /* SYSWRITE */
812 A(0,3,0), /* RETURN */
818 A(1,1,1), /* INDEX */
819 A(1,1,1), /* RINDEX */
821 A(0,0,0), /* TIMES */
822 A(1,0,0), /* LOCALTIME */
823 A(1,0,0), /* GMTIME */
824 A(1,1,0), /* TRUNCATE */
825 A(1,0,0), /* LSTAT */
827 A(1,1,0), /* CRYPT */
828 A(1,1,0), /* ATAN2 */
832 A(1,0,0), /* SRAND */
838 A(1,0,0), /* ALARM */
839 A(1,0,0), /* SLEEP */
840 A(1,1,0), /* RANGE */
841 A(1,0,0), /* F_OR_R */
846 A(1,1,0), /* WAITPID */
847 A(1,3,0), /* SYSTEM */
851 A(0,3,0), /* CHOWN */
853 A(0,3,0), /* UNLINK */
854 A(0,3,0), /* CHMOD */
855 A(0,3,0), /* UTIME */
856 A(1,0,0), /* UMASK */
857 A(1,1,0), /* MSGGET */
858 A(1,1,1), /* SHMGET */
859 A(1,1,1), /* SEMGET */
860 A(1,1,1), /* MSGCTL */
861 A(1,1,1), /* SHMCTL */
862 A5(1,1,1,1,0), /* SEMCTL */
863 A(1,1,1), /* MSGSND */
864 A5(1,1,1,1,1), /* MSGRCV */
865 A(1,1,1), /* SEMOP */
866 A5(1,1,1,1,0), /* SHMREAD */
867 A5(1,1,1,1,0), /* SHMWRITE */
868 A(1,1,0), /* RENAME */
870 A(1,1,0), /* MKDIR */
871 A(1,0,0), /* RMDIR */
872 A(0,0,0), /* GETPPID */
873 A(1,0,0), /* GETPGRP */
874 A(1,1,0), /* SETPGRP */
875 A(1,1,0), /* GETPRIORITY */
876 A(1,1,1), /* SETPRIORITY */
877 A(1,0,0), /* CHROOT */
878 A(1,1,1), /* FCNTL */
879 A(1,1,1), /* SYSIOCTL */
880 A(1,1,0), /* FLOCK */
881 A(0,3,0), /* UNSHIFT */
882 A(1,0,0), /* REQUIRE */
883 A(1,0,0), /* DOFILE */
885 A(1,0,0), /* FTRREAD */
886 A(1,0,0), /* FTRWRITE */
887 A(1,0,0), /* FTREXEC */
888 A(1,0,0), /* FTEREAD */
889 A(1,0,0), /* FTEWRITE */
890 A(1,0,0), /* FTEEXEC */
892 A(1,0,0), /* FTEOWNED */
893 A(1,0,0), /* FTROWNED */
894 A(1,0,0), /* FTZERO */
895 A(1,0,0), /* FTSIZE */
896 A(1,0,0), /* FTMTIME */
897 A(1,0,0), /* FTATIME */
898 A(1,0,0), /* FTCTIME */
899 A(1,0,0), /* FTSOCK */
900 A(1,0,0), /* FTCHR */
901 A(1,0,0), /* FTBLK */
902 A(1,0,0), /* FTFILE */
903 A(1,0,0), /* FTDIR */
904 A(1,0,0), /* FTPIPE */
905 A(1,0,0), /* FTLINK */
906 A(1,1,0), /* SYMLINK */
907 A(1,0,0), /* READLINK */
908 A(1,0,0), /* FTSUID */
909 A(1,0,0), /* FTSGID */
910 A(1,0,0), /* FTSVTX */
911 A(1,0,0), /* FTTTY */
912 A(1,0,0), /* FTTEXT */
913 A(1,0,0), /* FTBINARY */
914 A5(1,1,1,1,0), /* SOCKET */
916 A(1,1,0), /* CONNECT */
917 A(1,1,0), /* LISTEN */
918 A(1,1,0), /* ACCEPT */
919 A(1,0,0), /* GHBYNAME */
920 A(1,1,0), /* GHBYADDR */
921 A(0,0,0), /* GHOSTENT */
922 A(1,0,0), /* GNBYNAME */
923 A(1,1,0), /* GNBYADDR */
924 A(0,0,0), /* GNETENT */
925 A(1,0,0), /* GPBYNAME */
926 A(1,0,0), /* GPBYNUMBER */
927 A(0,0,0), /* GPROTOENT */
928 A(1,1,0), /* GSBYNAME */
929 A(1,1,0), /* GSBYPORT */
930 A(0,0,0), /* GSERVENT */
931 A(1,0,0), /* SHOSTENT */
932 A(1,0,0), /* SNETENT */
933 A(1,0,0), /* SPROTOENT */
934 A(1,0,0), /* SSERVENT */
935 A(0,0,0), /* EHOSTENT */
936 A(0,0,0), /* ENETENT */
937 A(0,0,0), /* EPROTOENT */
938 A(0,0,0), /* ESERVENT */
939 A5(1,1,1,1,1), /* SOCKPAIR */
940 A(1,1,0), /* SHUTDOWN */
941 A(1,1,1), /* GSOCKOPT */
942 A5(1,1,1,1,0), /* SSOCKOPT */
943 A(1,0,0), /* GETSOCKNAME */
944 A(1,0,0), /* GETPEERNAME */
945 A5(1,1,1,1,0), /* SSELECT */
946 A(1,0,0), /* FILENO */
947 A(1,0,0), /* BINMODE */
949 A(1,0,0), /* GPWNAM */
950 A(1,0,0), /* GPWUID */
951 A(0,0,0), /* GPWENT */
952 A(0,0,0), /* SPWENT */
953 A(0,0,0), /* EPWENT */
954 A(1,0,0), /* GGRNAM */
955 A(1,0,0), /* GGRGID */
956 A(0,0,0), /* GGRENT */
957 A(0,0,0), /* SGRENT */
958 A(0,0,0), /* EGRENT */
959 A(0,0,0), /* GETLOGIN */
960 A(1,1,0), /* OPENDIR */
961 A(1,0,0), /* READDIR */
962 A(1,0,0), /* TELLDIR */
963 A(1,1,0), /* SEEKDIR */
964 A(1,0,0), /* REWINDDIR */
965 A(1,0,0), /* CLOSEDIR */
966 A(1,3,0), /* SYSCALL */
969 A(1,0,0), /* EVALONCE */