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ebd61f12 | 1 | static char *sccsid = "@(#)stat.c 2.1 (Berkeley) %G%"; |
769b93e6 PK |
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 | int cntstat; | |
f4e01610 | 15 | int cnts = 3; |
769b93e6 PK |
16 | |
17 | statlist(r) | |
18 | int *r; | |
19 | { | |
20 | register int *sl; | |
21 | ||
22 | sl = r; | |
23 | if (sl != NIL) | |
24 | for (;;) { | |
25 | statement(sl[1]); | |
26 | sl = sl[2]; | |
27 | if (sl == NIL) | |
28 | break; | |
29 | ppsep(";"); | |
30 | } | |
31 | else | |
32 | statement(NIL); | |
33 | } | |
34 | ||
35 | ||
36 | statement(r) | |
37 | int *r; | |
38 | { | |
39 | register int *s; | |
40 | ||
41 | s = r; | |
42 | top: | |
43 | if (cntstat) { | |
44 | cntstat = 0; | |
45 | getcnt(); | |
46 | } | |
47 | if (s == NIL) { | |
48 | putcm(); | |
49 | ppitem(); | |
50 | ppid("null"); | |
51 | return; | |
52 | } | |
53 | if (s[0] == T_REPEAT) | |
54 | setinfo(s[1]); | |
55 | else | |
56 | setline(s[1]); | |
57 | if (s[0] == T_LABEL) { | |
58 | cntstat = 1; | |
59 | ppnl(); | |
60 | labeled(s[2]); | |
61 | statement(s[3]); | |
62 | return; | |
63 | } | |
64 | switch (s[0]) { | |
65 | default: | |
66 | panic("stat"); | |
67 | case T_PCALL: | |
68 | ppitem(); | |
69 | proc(s); | |
70 | break; | |
71 | case T_IF: | |
72 | case T_IFEL: | |
73 | ppnl(); | |
74 | indent(); | |
75 | ifop(s); | |
76 | break; | |
77 | case T_WHILE: | |
78 | ppnl(); | |
79 | indent(); | |
80 | whilop(s); | |
81 | break; | |
82 | case T_REPEAT: | |
83 | ppnl(); | |
84 | indent(); | |
85 | repop(s); | |
86 | break; | |
87 | case T_FORU: | |
88 | case T_FORD: | |
89 | ppnl(); | |
90 | indent(); | |
91 | forop(s); | |
92 | break; | |
93 | case T_BLOCK: | |
94 | ppnl(); | |
95 | indent(); | |
96 | ppstbl(s, DECL); | |
97 | break; | |
98 | case T_ASGN: | |
99 | ppitem(); | |
100 | asgnop(s); | |
101 | break; | |
102 | case T_GOTO: | |
103 | ppitem(); | |
104 | gotoop(s[2]); | |
105 | cntstat = 1; | |
106 | break; | |
107 | case T_CASE: | |
108 | ppnl(); | |
109 | indent(); | |
110 | caseop(s); | |
111 | break; | |
112 | case T_WITH: | |
113 | ppnl(); | |
114 | indent(); | |
115 | withop(s); | |
116 | break; | |
769b93e6 PK |
117 | } |
118 | setinfo(s[1]); | |
119 | putcm(); | |
120 | } | |
121 | ||
122 | withop(s) | |
123 | int *s; | |
124 | { | |
125 | register *p; | |
126 | ||
127 | ppkw("with"); | |
128 | ppspac(); | |
129 | p = s[2]; | |
130 | if (p != NIL) | |
131 | for (;;) { | |
132 | lvalue(p[1]); | |
133 | p = p[2]; | |
134 | if (p == NIL) | |
135 | break; | |
136 | ppsep(", "); | |
137 | } | |
138 | else | |
139 | ppid("{record variable list}"); | |
140 | ppstdo(s[3], DECL); | |
141 | } | |
142 | ||
143 | asgnop(r) | |
144 | int *r; | |
145 | { | |
146 | ||
147 | lvalue(r[2]); | |
148 | ppsep(" := "); | |
149 | rvalue(r[3], NIL); | |
150 | } | |
151 | ||
152 | forop(r) | |
153 | int *r; | |
154 | { | |
155 | struct pxcnt scnt; | |
156 | ||
157 | savecnt(&scnt); | |
158 | ppkw("for"); | |
159 | ppspac(); | |
160 | asgnop(r[2]); | |
161 | ppspac(); | |
162 | ppkw(r[0] == T_FORU ? "to" : "downto"); | |
163 | ppspac(); | |
164 | rvalue(r[3], NIL); | |
165 | getcnt(); | |
166 | ppstdo(r[4], STAT); | |
167 | if (rescnt(&scnt)) | |
168 | getcnt(); | |
169 | } | |
170 | ||
171 | ifop(r) | |
172 | int *r; | |
173 | { | |
174 | register *s; | |
175 | struct pxcnt scnt; | |
176 | ||
177 | ppkw("if"); | |
178 | ppspac(); | |
179 | rvalue(r[2], NIL); | |
180 | ppspac(); | |
181 | ppkw("then"); | |
182 | ppspac(); | |
183 | s = r[3]; | |
184 | savecnt(&scnt); | |
185 | getcnt(); | |
186 | if (s != NIL && s[0] == T_BLOCK) | |
187 | ppstbl1(s, STAT); | |
188 | else { | |
189 | ppgoin(STAT); | |
190 | statement(s); | |
191 | ppgoout(STAT); | |
192 | } | |
193 | if (r[0] == T_IFEL) { | |
194 | setcnt(cntof(&scnt)-nowcnt()); | |
195 | if (s == NIL || s[0] != T_BLOCK) { | |
196 | ppnl(); | |
197 | indent(); | |
198 | } else { | |
199 | ppstbl2(); | |
200 | ppspac(); | |
201 | } | |
202 | s = r[4]; | |
203 | ppkw("else"); | |
204 | unprint(); | |
205 | ppspac(); | |
206 | if (s == NIL) | |
207 | goto burp; | |
208 | if (s[0] == T_BLOCK) | |
209 | ppstbl1(s, STAT); | |
210 | else if (s[0] == T_IF || s[0] == T_IFEL) | |
211 | ifop(s); | |
212 | else { | |
213 | burp: | |
214 | ppgoin(STAT); | |
215 | statement(s); | |
216 | ppgoout(STAT); | |
217 | } | |
218 | } | |
219 | if (rescnt(&scnt)) | |
220 | getcnt(); | |
221 | if (r[4] != NIL) | |
222 | unprint(); | |
223 | if (s != NIL && s[0] == T_BLOCK) | |
224 | ppstbl2(); | |
225 | } | |
226 | ||
227 | whilop(r) | |
228 | int *r; | |
229 | { | |
230 | struct pxcnt scnt; | |
231 | ||
232 | ppkw("while"); | |
233 | ppspac(); | |
234 | rvalue(r[2], NIL); | |
235 | savecnt(&scnt); | |
236 | getcnt(); | |
237 | ppstdo(r[3], STAT); | |
238 | if (rescnt(&scnt)) | |
239 | getcnt(); | |
240 | } | |
241 | ||
242 | repop(r) | |
243 | int *r; | |
244 | { | |
245 | struct pxcnt scnt; | |
246 | ||
247 | ppkw("repeat"); | |
248 | ppgoin(STAT); | |
249 | savecnt(&scnt); | |
250 | getcnt(); | |
251 | statlist(r[2]); | |
252 | ppgoout(DECL); | |
253 | ppnl(); | |
254 | indent(); | |
255 | ppkw("until"); | |
256 | ppspac(); | |
257 | rvalue(r[3], NIL); | |
258 | ppgoin(DECL); | |
259 | ppgoout(STAT); | |
260 | if (rescnt(&scnt)) | |
261 | getcnt(); | |
262 | } | |
263 | ||
264 | ppstbl(r, m) | |
265 | int *r; | |
266 | { | |
267 | ppstbl1(r, m); | |
268 | ppstbl2(); | |
269 | } | |
270 | ||
271 | ppstbl1(r, m) | |
272 | int *r; | |
273 | { | |
274 | ppkw("begin"); | |
275 | ppgoin(m); | |
276 | statlist(r[2]); | |
277 | ppgoout(m); | |
278 | } | |
279 | ||
280 | ppstbl2() | |
281 | { | |
282 | ppnl(); | |
283 | indent(); | |
284 | ppkw("end"); | |
285 | } | |
286 | ||
287 | ppstdo(r, l) | |
288 | int *r; | |
289 | { | |
290 | register *s; | |
291 | ||
292 | ppspac(); | |
293 | ppkw("do"); | |
294 | ppspac(); | |
295 | s = r; | |
296 | if (s != NIL && s[0] == T_BLOCK) | |
297 | ppstbl(s, l); | |
298 | else { | |
299 | ppgoin(l); | |
300 | statement(s); | |
301 | ppgoout(l); | |
302 | } | |
303 | } |