Commit | Line | Data |
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695246fe PK |
1 | static char *sccsid = "@(#)lval.c 1.1 (Berkeley) %G%"; |
2 | /* Copyright (c) 1979 Regents of the University of California */ | |
3 | # | |
4 | /* | |
5 | * pxp - Pascal execution profiler | |
6 | * | |
7 | * Bill Joy UCB | |
8 | * Version 1.2 January 1979 | |
9 | */ | |
10 | ||
11 | #include "0.h" | |
12 | #include "tree.h" | |
13 | ||
14 | /* | |
15 | * A "variable" | |
16 | */ | |
17 | lvalue(r) | |
18 | register int *r; | |
19 | { | |
20 | register *c, *co; | |
21 | ||
22 | ppid(r[2]); | |
23 | for (c = r[3]; c != NIL; c = c[2]) { | |
24 | co = c[1]; | |
25 | if (co == NIL) | |
26 | continue; | |
27 | switch (co[0]) { | |
28 | case T_PTR: | |
29 | ppop("^"); | |
30 | continue; | |
31 | case T_ARY: | |
32 | arycod(co[1]); | |
33 | continue; | |
34 | case T_FIELD: | |
35 | ppop("."); | |
36 | ppid(co[1]); | |
37 | continue; | |
38 | case T_ARGL: | |
39 | ppid("{unexpected argument list}"); | |
40 | break; | |
41 | default: | |
42 | panic("lval2"); | |
43 | } | |
44 | } | |
45 | } | |
46 | ||
47 | /* | |
48 | * Subscripting | |
49 | */ | |
50 | arycod(el) | |
51 | register int *el; | |
52 | { | |
53 | ||
54 | ppbra("["); | |
55 | if (el != NIL) | |
56 | for (;;) { | |
57 | rvalue(el[1], NIL); | |
58 | el = el[2]; | |
59 | if (el == NIL) | |
60 | break; | |
61 | ppsep(", "); | |
62 | } | |
63 | else | |
64 | rvalue(NIL, NIL); | |
65 | ppket("]"); | |
66 | } |