blob: ebb892e5212153948acde3380731e53bb95d630b (
plain)
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
|
#[doc(
brief = "Attribute parsing",
desc =
"The attribute parser provides methods for pulling documentation out of \
an AST's attributes."
)];
use syntax::ast;
use syntax::attr;
use core::tuple;
export crate_attrs;
export parse_crate, parse_desc;
export parse_hidden;
type crate_attrs = {
name: Option<~str>
};
#[cfg(test)]
mod test {
fn parse_attributes(source: ~str) -> ~[ast::attribute] {
use syntax::parse;
use parse::parser;
use parse::attr::parser_attr;
use syntax::codemap;
use syntax::diagnostic;
let parse_sess = syntax::parse::new_parse_sess(None);
let parser = parse::new_parser_from_source_str(
parse_sess, ~[], ~"-", codemap::fss_none, @source);
parser.parse_outer_attributes()
}
}
fn doc_meta(
attrs: ~[ast::attribute]
) -> Option<@ast::meta_item> {
/*!
* Given a vec of attributes, extract the meta_items contained in the \
* doc attribute
*/
let doc_attrs = attr::find_attrs_by_name(attrs, ~"doc");
let doc_metas = do doc_attrs.map |attr| {
attr::attr_meta(attr::desugar_doc_attr(attr))
};
if vec::is_not_empty(doc_metas) {
if vec::len(doc_metas) != 1u {
warn!("ignoring %u doc attributes", vec::len(doc_metas) - 1u);
}
Some(doc_metas[0])
} else {
None
}
}
fn parse_crate(attrs: ~[ast::attribute]) -> crate_attrs {
let link_metas = attr::find_linkage_metas(attrs);
{
name: attr::last_meta_item_value_str_by_name(link_metas, ~"name")
}
}
#[test]
fn should_extract_crate_name_from_link_attribute() {
let source = ~"#[link(name = \"snuggles\")]";
let attrs = test::parse_attributes(source);
let attrs = parse_crate(attrs);
assert attrs.name == Some(~"snuggles");
}
#[test]
fn should_not_extract_crate_name_if_no_link_attribute() {
let source = ~"";
let attrs = test::parse_attributes(source);
let attrs = parse_crate(attrs);
assert attrs.name == None;
}
#[test]
fn should_not_extract_crate_name_if_no_name_value_in_link_attribute() {
let source = ~"#[link(whatever)]";
let attrs = test::parse_attributes(source);
let attrs = parse_crate(attrs);
assert attrs.name == None;
}
fn parse_desc(attrs: ~[ast::attribute]) -> Option<~str> {
match doc_meta(attrs) {
Some(meta) => {
attr::get_meta_item_value_str(meta)
}
None => None
}
}
#[test]
fn parse_desc_should_handle_undocumented_mods() {
let source = ~"";
let attrs = test::parse_attributes(source);
let attrs = parse_desc(attrs);
assert attrs == None;
}
#[test]
fn parse_desc_should_parse_simple_doc_attributes() {
let source = ~"#[doc = \"basic\"]";
let attrs = test::parse_attributes(source);
let attrs = parse_desc(attrs);
assert attrs == Some(~"basic");
}
fn parse_hidden(attrs: ~[ast::attribute]) -> bool {
match doc_meta(attrs) {
Some(meta) => {
match attr::get_meta_item_list(meta) {
Some(metas) => {
let hiddens = attr::find_meta_items_by_name(metas, ~"hidden");
vec::is_not_empty(hiddens)
}
None => false
}
}
None => false
}
}
#[test]
fn shoulde_parse_hidden_attribute() {
let source = ~"#[doc(hidden)]";
let attrs = test::parse_attributes(source);
assert parse_hidden(attrs) == true;
}
#[test]
fn shoulde_not_parse_non_hidden_attribute() {
let source = ~"#[doc = \"\"]";
let attrs = test::parse_attributes(source);
assert parse_hidden(attrs) == false;
}
|
