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
|
use super::*;
pub(super) fn mod_contents(p: &mut Parser) {
attributes::inner_attributes(p);
many(p, |p| {
skip_to_first(
p, item_first, mod_contents_item,
"expected item",
)
});
}
fn item_first(p: &Parser) -> bool {
match p.current() {
STRUCT_KW | FN_KW | EXTERN_KW | MOD_KW | USE_KW => true,
_ => false,
}
}
fn mod_contents_item(p: &mut Parser) {
if item(p) {
if p.current() == SEMI {
node(p, ERROR, |p| {
p.error()
.message("expected item, found `;`\n\
consider removing this semicolon")
.emit();
p.bump();
})
}
}
}
fn item(p: &mut Parser) -> bool {
attributes::outer_attributes(p);
visibility(p);
// node_if(p, USE_KW, USE_ITEM, use_item)
// || extern crate_fn
// || node_if(p, STATIC_KW, STATIC_ITEM, static_item)
// || node_if(p, CONST_KW, CONST_ITEM, const_item) or const FN!
// || unsafe trait, impl
// || node_if(p, FN_KW, FN_ITEM, fn_item)
// || node_if(p, TYPE_KW, TYPE_ITEM, type_item)
node_if(p, [EXTERN_KW, CRATE_KW], EXTERN_CRATE_ITEM, extern_crate_item)
|| node_if(p, MOD_KW, MOD_ITEM, mod_item)
|| node_if(p, USE_KW, USE_ITEM, use_item)
|| node_if(p, STRUCT_KW, STRUCT_ITEM, struct_item)
|| node_if(p, FN_KW, FN_ITEM, fn_item)
}
fn struct_item(p: &mut Parser) {
p.expect(IDENT)
&& p.curly_block(|p| comma_list(p, EOF, struct_field));
}
fn extern_crate_item(p: &mut Parser) {
p.expect(IDENT) && alias(p) && p.expect(SEMI);
}
fn mod_item(p: &mut Parser) {
if !p.expect(IDENT) {
return;
}
if p.eat(SEMI) {
return;
}
p.curly_block(mod_contents);
}
fn use_item(p: &mut Parser) {
paths::use_path(p);
p.expect(SEMI);
}
fn struct_field(p: &mut Parser) -> bool {
node_if(p, IDENT, STRUCT_FIELD, |p| {
p.expect(COLON) && p.expect(IDENT);
})
}
fn fn_item(p: &mut Parser) {
p.expect(IDENT) && p.expect(L_PAREN) && p.expect(R_PAREN)
&& p.curly_block(|_| ());
}
|
