1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
|
static bool typedefs_stmt(CGenerator *g, Statement *s);
static bool typedefs_decl(CGenerator *g, Declaration *d);
static bool typedefs_block(CGenerator *g, Block *b) {
Block *prev = g->block;
if (!cgen_block_enter(g, b))
return false;
arr_foreach(b->stmts, Statement, s)
if (!typedefs_stmt(g, s))
return false;
cgen_block_exit(g, prev);
return true;
}
static bool typedefs_expr(CGenerator *g, Expression *e) {
cgen_recurse_subexprs(g, e, typedefs_expr, typedefs_block, typedefs_decl);
if (e->kind == EXPR_FN) {
/* needs to go before decls_cgen.c... */
e->fn.c.id = g->ident_counter++;
}
return true;
}
static bool typedefs_decl(CGenerator *g, Declaration *d) {
if (cgen_fn_is_direct(g, d)) {
d->expr.fn.c.name = d->idents[0];
}
for (int idx = 0; idx < (int)arr_len(d->idents); idx++) {
Identifier i = d->idents[idx];
Type *type = decl_type_at_index(d, idx);
Value *val = decl_val_at_index(d, idx);
if (type->kind == TYPE_TYPE) {
/* generate typedef */
IdentID id = 0;
if (g->block != NULL || g->fn != NULL)
id = g->ident_counter++;
if (val->type->kind == TYPE_STRUCT) {
/* we'll actually define the struct later; here we can just declare it */
StructDef *sdef = val->type->struc;
if (sdef->c.id || sdef->c.name) {
/* we've already done this */
} else {
cgen_write(g, "struct ");
if (id) {
cgen_ident_id(g, id);
sdef->c.id = id;
} else {
cgen_ident(g, i);
sdef->c.name = i;
}
cgen_write(g, ";");
}
} else {
cgen_write(g, "typedef ");
if (!cgen_type_pre(g, val->type, d->where)) return false;
cgen_write(g, " ");
if (id) {
cgen_ident_id(g, id);
} else {
cgen_ident(g, i);
}
if (val->type->kind != TYPE_STRUCT) {
if (!cgen_type_post(g, val->type, d->where)) return false;
}
cgen_write(g, ";");
}
cgen_nl(g);
}
}
if (d->flags & DECL_HAS_EXPR) {
if (!(d->flags & DECL_IS_CONST) || d->expr.kind == EXPR_FN) {
if (!typedefs_expr(g, &d->expr))
return false;
}
}
return true;
}
static bool typedefs_stmt(CGenerator *g, Statement *s) {
switch (s->kind) {
case STMT_DECL:
if (!typedefs_decl(g, &s->decl))
return false;
break;
case STMT_EXPR:
if (!typedefs_expr(g, &s->expr))
return false;
break;
case STMT_RET:
if (s->ret.flags & RET_HAS_EXPR)
if (!typedefs_expr(g, &s->ret.expr))
return false;
break;
}
return true;
}
static bool typedefs_file(CGenerator *g, ParsedFile *f) {
arr_foreach(f->stmts, Statement, s) {
if (!typedefs_stmt(g, s))
return false;
}
return true;
}
|
