Commit | Line | Data |
---|---|---|
204ed195 ML |
1 | /* Copyright (c) 1982 Regents of the University of California */ |
2 | ||
3 | static char sccsid[] = "@(#)printval.c 1.1 %G%"; | |
4 | ||
5 | /* | |
6 | * Print out the value at the top of the stack using the given type. | |
7 | */ | |
8 | ||
9 | #include "defs.h" | |
10 | #include "sym.h" | |
11 | #include "btypes.h" | |
12 | #include "classes.h" | |
13 | #include "tree.h" | |
14 | #include "process.h" | |
15 | #include "mappings.h" | |
16 | #include "sym.rep" | |
17 | ||
18 | printval(s) | |
19 | SYM *s; | |
20 | { | |
21 | SYM *t; | |
22 | ADDRESS a; | |
23 | int len; | |
24 | ||
25 | if (s->class == REF) { | |
26 | s = s->type; | |
27 | } | |
28 | switch(s->class) { | |
29 | case ARRAY: | |
30 | t = rtype(s->type); | |
31 | if (t==t_char || (t->class==RANGE && t->type==t_char)) { | |
32 | len = size(s); | |
33 | sp -= len; | |
34 | printf("'%s'", sp); | |
35 | break; | |
36 | } else { | |
37 | printarray(s); | |
38 | } | |
39 | break; | |
40 | ||
41 | case RECORD: | |
42 | printrecord(s); | |
43 | break; | |
44 | ||
45 | case VARNT: | |
46 | error("can't print out variant records"); | |
47 | break; | |
48 | ||
49 | case RANGE: | |
50 | if (s == t_real) { | |
51 | printf("%g", pop(double)); | |
52 | } else if (s == t_char) { | |
53 | printf("'%c'", pop(long)); | |
54 | } else if (s == t_boolean) { | |
55 | printf(pop(BOOLEAN)==TRUE ? "true" : "false"); | |
56 | } else { | |
57 | printf("%ld", pop(long)); | |
58 | } | |
59 | break; | |
60 | ||
61 | case FILET: | |
62 | case PTR: { | |
63 | ADDRESS addr; | |
64 | ||
65 | addr = pop(ADDRESS); | |
66 | if (addr == 0) { | |
67 | printf("nil"); | |
68 | } else { | |
69 | printf("0%o", addr); | |
70 | } | |
71 | break; | |
72 | } | |
73 | ||
74 | case FIELD: | |
75 | error("missing record specification"); | |
76 | break; | |
77 | ||
78 | case SCAL: { | |
79 | int scalar; | |
80 | BOOLEAN found; | |
81 | ||
82 | scalar = pop(long); | |
83 | found = FALSE; | |
84 | for (t = s->chain; t != NIL; t = t->chain) { | |
85 | if (t->symvalue.iconval == scalar) { | |
86 | printf("%s", t->symbol); | |
87 | found = TRUE; | |
88 | break; | |
89 | } | |
90 | } | |
91 | if (!found) { | |
92 | printf("(scalar = %d)", scalar); | |
93 | } | |
94 | break; | |
95 | } | |
96 | ||
97 | case FPROC: | |
98 | case FFUNC: | |
99 | { | |
100 | ADDRESS a; | |
101 | ||
102 | a = fparamaddr(pop(long)); | |
103 | t = whatblock(a); | |
104 | if (t == NIL) { | |
105 | printf("(proc %d)", a); | |
106 | } else { | |
107 | printf("%s", t->symbol); | |
108 | } | |
109 | break; | |
110 | } | |
111 | ||
112 | default: | |
113 | if (s->class < BADUSE || s->class > VARNT) { | |
114 | panic("printval: bad class %d", s->class); | |
115 | } | |
116 | error("don't know how to print a %s", classname(s)); | |
117 | /* NOTREACHED */ | |
118 | } | |
119 | } | |
120 | ||
121 | /* | |
122 | * Print out the value of a record, field by field. | |
123 | */ | |
124 | ||
125 | LOCAL printrecord(s) | |
126 | SYM *s; | |
127 | { | |
128 | SYM *t; | |
129 | ||
130 | if ((t = s->chain) == NIL) { | |
131 | error("record has no fields"); | |
132 | } | |
133 | printf("("); | |
134 | sp -= size(s); | |
135 | printfield(t); | |
136 | printf(")"); | |
137 | } | |
138 | ||
139 | /* | |
140 | * Print out a field, first printing out other fields. | |
141 | * This is done because the fields are chained together backwards. | |
142 | */ | |
143 | ||
144 | LOCAL printfield(s) | |
145 | SYM *s; | |
146 | { | |
147 | STACK *savesp; | |
148 | ||
149 | if (s->chain != NIL) { | |
150 | printfield(s->chain); | |
151 | printf(", "); | |
152 | } | |
153 | printf("%s = ", s->symbol); | |
154 | savesp = sp; | |
155 | sp += (s->symvalue.offset + size(s->type)); | |
156 | alignstack(); | |
157 | printval(s->type); | |
158 | sp = savesp; | |
159 | } | |
160 | ||
161 | /* | |
162 | * Print out the contents of an array. | |
163 | * Haven't quite figured out what the best format is. | |
164 | * | |
165 | * This is rather inefficient. | |
166 | * | |
167 | * The "2*elsize" is there since "printval" drops the stack by elsize. | |
168 | */ | |
169 | ||
170 | LOCAL printarray(a) | |
171 | SYM *a; | |
172 | { | |
173 | STACK *savesp, *newsp; | |
174 | SYM *eltype; | |
175 | long elsize; | |
176 | ||
177 | savesp = sp; | |
178 | sp -= size(a); | |
179 | newsp = sp; | |
180 | eltype = a->type; | |
181 | elsize = size(eltype); | |
182 | printf("("); | |
183 | for (sp += elsize; sp <= savesp; sp += 2*elsize) { | |
184 | if (sp - elsize != newsp) { | |
185 | printf(", "); | |
186 | } | |
187 | printval(eltype); | |
188 | } | |
189 | sp = newsp; | |
190 | printf(")"); | |
191 | } |