projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 0fc6e47b | 1 | /*- |
| ad787160 C |
2 | * Copyright (c) 1980, 1993 |
| 3 | * The Regents of the University of California. All rights reserved. | |
| 0fc6e47b | 4 | * |
| c0567266 KB |
5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions | |
| 7 | * are met: | |
| 8 | * 1. Redistributions of source code must retain the above copyright | |
| 9 | * notice, this list of conditions and the following disclaimer. | |
| 10 | * 2. Redistributions in binary form must reproduce the above copyright | |
| 11 | * notice, this list of conditions and the following disclaimer in the | |
| 12 | * documentation and/or other materials provided with the distribution. | |
| 13 | * 3. All advertising materials mentioning features or use of this software | |
| 14 | * must display the following acknowledgement: | |
| 15 | * This product includes software developed by the University of | |
| 16 | * California, Berkeley and its contributors. | |
| 17 | * 4. Neither the name of the University nor the names of its contributors | |
| 18 | * may be used to endorse or promote products derived from this software | |
| 19 | * without specific prior written permission. | |
| 20 | * | |
| 21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
| 22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
| 25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
| 26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
| 27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
| 28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
| 29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
| 30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
| 31 | * SUCH DAMAGE. | |
| 252367af DF |
32 | */ |
| 33 | ||
| 34 | #ifndef lint | |
| ad787160 | 35 | static char sccsid[] = "@(#)lval.c 8.1 (Berkeley) 6/6/93"; |
| 0fc6e47b | 36 | #endif /* not lint */ |
| 252367af | 37 | |
| 695246fe PK |
38 | /* |
| 39 | * pxp - Pascal execution profiler | |
| 40 | * | |
| 41 | * Bill Joy UCB | |
| 42 | * Version 1.2 January 1979 | |
| 43 | */ | |
| 44 | ||
| 45 | #include "0.h" | |
| 46 | #include "tree.h" | |
| 47 | ||
| 48 | /* | |
| 49 | * A "variable" | |
| 50 | */ | |
| 51 | lvalue(r) | |
| 52 | register int *r; | |
| 53 | { | |
| 54 | register *c, *co; | |
| 55 | ||
| 56 | ppid(r[2]); | |
| 57 | for (c = r[3]; c != NIL; c = c[2]) { | |
| 58 | co = c[1]; | |
| 59 | if (co == NIL) | |
| 60 | continue; | |
| 61 | switch (co[0]) { | |
| 62 | case T_PTR: | |
| 63 | ppop("^"); | |
| 64 | continue; | |
| 65 | case T_ARY: | |
| 66 | arycod(co[1]); | |
| 67 | continue; | |
| 68 | case T_FIELD: | |
| 69 | ppop("."); | |
| 70 | ppid(co[1]); | |
| 71 | continue; | |
| 72 | case T_ARGL: | |
| 73 | ppid("{unexpected argument list}"); | |
| 74 | break; | |
| 75 | default: | |
| 76 | panic("lval2"); | |
| 77 | } | |
| 78 | } | |
| 79 | } | |
| 80 | ||
| 81 | /* | |
| 82 | * Subscripting | |
| 83 | */ | |
| 84 | arycod(el) | |
| 85 | register int *el; | |
| 86 | { | |
| 87 | ||
| 88 | ppbra("["); | |
| 89 | if (el != NIL) | |
| 90 | for (;;) { | |
| 91 | rvalue(el[1], NIL); | |
| 92 | el = el[2]; | |
| 93 | if (el == NIL) | |
| 94 | break; | |
| 95 | ppsep(", "); | |
| 96 | } | |
| 97 | else | |
| 98 | rvalue(NIL, NIL); | |
| 99 | ppket("]"); | |
| 100 | } |