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
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
|
/*
Copyright (C) 2019, 2020 Leo Tenenbaum.
This file is part of toc. toc is distributed under version 3 of the GNU General Public License, without any warranty whatsoever.
You should have received a copy of the GNU General Public License along with toc. If not, see <https://www.gnu.org/licenses/>.
*/
static bool cgen_decls_stmt(CGenerator *g, Statement *s);
static bool cgen_decls_block(CGenerator *g, Block *b);
static bool cgen_decls_decl(CGenerator *g, Declaration *d);
static bool cgen_decls_type(CGenerator *g, Type *type) {
if (!(type->flags & TYPE_IS_RESOLVED)) /* non-instance constant fn parameter type */
return true;
if (type->kind == TYPE_STRUCT) {
StructDef *sdef = type->struc;
if (!(sdef->flags & STRUCT_DEF_CGEN_DEFINED)) {
/* generate struct definition */
cgen_write(g, "struct ");
if (sdef->name) {
cgen_ident(g, sdef->name);
} else {
assert(sdef->c.id);
cgen_ident_id(g, sdef->c.id);
}
cgen_write(g, "{");
cgen_nl(g);
++g->indent_lvl;
arr_foreach(sdef->fields, Field, f) {
if (!cgen_type_pre(g, &f->type, sdef->where)) return false;
cgen_write(g, " ");
cgen_ident(g, f->name);
if (!cgen_type_post(g, &f->type, sdef->where)) return false;
cgen_write(g, ";");
cgen_nl(g);
}
--g->indent_lvl;
cgen_write(g, "};");
cgen_nl(g);
sdef->flags |= STRUCT_DEF_CGEN_DEFINED;
}
}
cgen_recurse_subtypes(cgen_decls_type, g, type);
return true;
}
static bool cgen_fn_decl(CGenerator *g, FnExpr *f, Location where, U64 instance, U64 which_are_const) {
if (cgen_should_gen_fn(f)) {
if (!fn_enter(f, 0))
return false;
if (!cgen_fn_header(g, f, where, instance, which_are_const))
return false;
cgen_write(g, ";");
cgen_nl(g);
fn_exit(f);
char *pkg_name = g->evalr->typer->pkg_name;
if (pkg_name && f->export.id) {
/* allow use of function without referring to package in this file */
cgen_write(g, "#define ");
cgen_full_fn_name(g, f, instance);
cgen_write(g, " %s__", pkg_name);
cgen_full_fn_name(g, f, instance);
cgen_nl(g);
}
}
return true;
}
static bool cgen_decls_fn_instances(CGenerator *g, Expression *e) {
assert(e->kind == EXPR_FN);
FnExpr *f = e->fn;
assert(e->type.fn.constness);
Instance **data = f->instances.data;
for (U64 i = 0; i < f->instances.cap; ++i) {
if (f->instances.occupied[i]) {
if (cgen_should_gen_fn(&(*data)->fn)) {
(*data)->fn.c.name = f->c.name;
(*data)->fn.c.id = f->c.id;
if (!cgen_fn_decl(g, &(*data)->fn, e->where, (*data)->c.id, (*data)->val.tuple[0].u64))
return false;
cgen_write(g, ";");
cgen_nl(g);
}
}
++data;
}
return true;
}
static bool cgen_decls_expr(CGenerator *g, Expression *e) {
cgen_recurse_subexprs(g, e, cgen_decls_expr, cgen_decls_block, cgen_decls_decl);
switch (e->kind) {
case EXPR_FN: {
FnExpr *f = e->fn;
f->c.name = NULL;
if (!f->c.id)
f->c.id = ++g->ident_counter;
FnType *fn_type = &e->type.fn;
if (fn_type->constness) {
if (!cgen_decls_fn_instances(g, e))
return false;
} else {
if (!cgen_fn_decl(g, e->fn, e->where, 0, 0))
return false;
}
} break;
case EXPR_TYPE: {
Type *type = &e->typeval;
if (!cgen_decls_type(g, type))
return false;
} break;
case EXPR_CAST:
if (!cgen_decls_type(g, &e->cast.type))
return false;
default:
break;
}
return true;
}
static bool cgen_decls_block(CGenerator *g, Block *b) {
Block *prev = g->block;
if (!cgen_block_enter(g, b))
return false;
arr_foreach(b->stmts, Statement, s)
if (!cgen_decls_stmt(g, s))
return false;
if (b->ret_expr && !cgen_decls_expr(g, b->ret_expr))
return false;
cgen_block_exit(g, prev);
return true;
}
static bool cgen_decls_decl(CGenerator *g, Declaration *d) {
if (!cgen_decls_type(g, &d->type))
return false;
if (cgen_fn_is_direct(g, d)) {
d->expr.fn->c.name = d->idents[0];
if (d->expr.type.fn.constness) {
if (!cgen_decls_fn_instances(g, &d->expr))
return false;
} else {
if (!cgen_fn_decl(g, d->expr.fn, d->expr.where, 0, 0))
return false;
}
cgen_recurse_subexprs(g, (&d->expr), cgen_decls_expr, cgen_decls_block, cgen_decls_decl);
} else {
if (d->flags & DECL_HAS_EXPR) {
if (!cgen_decls_expr(g, &d->expr))
return false;
}
if (g->block == NULL && g->fn == NULL) {
for (int i = 0, n_idents = (int)arr_len(d->idents); i < n_idents; ++i) {
Identifier ident = d->idents[i];
Type *type = decl_type_at_index(d, i);
if (!type_is_compileonly(type)) {
if (ident->export_name)
cgen_write(g, "extern ");
else
cgen_write(g, "static ");
if (!cgen_type_pre(g, type, d->where))
return false;
cgen_write(g, " ");
cgen_ident(g, ident);
if (!cgen_type_post(g, type, d->where))
return false;
cgen_write(g, ";");
cgen_nl(g);
}
}
}
}
return true;
}
static bool cgen_decls_stmt(CGenerator *g, Statement *s) {
switch (s->kind) {
case STMT_DECL:
if (!cgen_decls_decl(g, &s->decl))
return false;
break;
case STMT_EXPR:
if (!cgen_decls_expr(g, &s->expr))
return false;
break;
case STMT_RET:
if (s->ret.flags & RET_HAS_EXPR)
if (!cgen_decls_expr(g, &s->ret.expr))
return false;
break;
}
return true;
}
static bool cgen_decls_file(CGenerator *g, ParsedFile *f) {
cgen_write(g, "/* declarations */\n");
arr_foreach(f->stmts, Statement, s) {
if (!cgen_decls_stmt(g, s))
return false;
}
return true;
}
|
