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
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
|
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
use std::collections::{BTreeSet, HashMap};
use crate::*;
use anyhow::{bail, Result};
type MetadataGroupMap = HashMap<String, MetadataGroup>;
// Create empty metadata groups based on the metadata items.
pub fn create_metadata_groups(items: &[Metadata]) -> MetadataGroupMap {
// Map crate names to MetadataGroup instances
items
.iter()
.filter_map(|i| match i {
Metadata::Namespace(namespace) => {
let group = MetadataGroup {
namespace: namespace.clone(),
items: BTreeSet::new(),
};
Some((namespace.crate_name.clone(), group))
}
Metadata::UdlFile(udl) => {
let namespace = NamespaceMetadata {
crate_name: udl.module_path.clone(),
name: udl.namespace.clone(),
};
let group = MetadataGroup {
namespace,
items: BTreeSet::new(),
};
Some((udl.module_path.clone(), group))
}
_ => None,
})
.collect::<HashMap<_, _>>()
}
/// Consume the items into the previously created metadata groups.
pub fn group_metadata(group_map: &mut MetadataGroupMap, items: Vec<Metadata>) -> Result<()> {
for item in items {
if matches!(&item, Metadata::Namespace(_)) {
continue;
}
let crate_name = calc_crate_name(item.module_path()).to_owned(); // XXX - kill clone?
let item = fixup_external_type(item, group_map);
let group = match group_map.get_mut(&crate_name) {
Some(ns) => ns,
None => bail!("Unknown namespace for {item:?} ({crate_name})"),
};
if group.items.contains(&item) {
bail!("Duplicate metadata item: {item:?}");
}
group.add_item(item);
}
Ok(())
}
#[derive(Debug)]
pub struct MetadataGroup {
pub namespace: NamespaceMetadata,
pub items: BTreeSet<Metadata>,
}
impl MetadataGroup {
pub fn add_item(&mut self, item: Metadata) {
self.items.insert(item);
}
}
pub fn fixup_external_type(item: Metadata, group_map: &MetadataGroupMap) -> Metadata {
let crate_name = calc_crate_name(item.module_path()).to_owned();
let converter = ExternalTypeConverter {
crate_name: &crate_name,
crate_to_namespace: group_map,
};
converter.convert_item(item)
}
/// Convert metadata items by replacing types from external crates with Type::External
struct ExternalTypeConverter<'a> {
crate_name: &'a str,
crate_to_namespace: &'a MetadataGroupMap,
}
impl<'a> ExternalTypeConverter<'a> {
fn crate_to_namespace(&self, crate_name: &str) -> String {
self.crate_to_namespace
.get(crate_name)
.unwrap_or_else(|| panic!("Can't find namespace for module {crate_name}"))
.namespace
.name
.clone()
}
fn convert_item(&self, item: Metadata) -> Metadata {
match item {
Metadata::Func(meta) => Metadata::Func(FnMetadata {
inputs: self.convert_params(meta.inputs),
return_type: self.convert_optional(meta.return_type),
throws: self.convert_optional(meta.throws),
..meta
}),
Metadata::Method(meta) => Metadata::Method(MethodMetadata {
inputs: self.convert_params(meta.inputs),
return_type: self.convert_optional(meta.return_type),
throws: self.convert_optional(meta.throws),
..meta
}),
Metadata::TraitMethod(meta) => Metadata::TraitMethod(TraitMethodMetadata {
inputs: self.convert_params(meta.inputs),
return_type: self.convert_optional(meta.return_type),
throws: self.convert_optional(meta.throws),
..meta
}),
Metadata::Constructor(meta) => Metadata::Constructor(ConstructorMetadata {
inputs: self.convert_params(meta.inputs),
throws: self.convert_optional(meta.throws),
..meta
}),
Metadata::Record(meta) => Metadata::Record(RecordMetadata {
fields: self.convert_fields(meta.fields),
..meta
}),
Metadata::Enum(meta) => Metadata::Enum(self.convert_enum(meta)),
Metadata::Error(meta) => Metadata::Error(match meta {
ErrorMetadata::Enum { enum_, is_flat } => ErrorMetadata::Enum {
enum_: self.convert_enum(enum_),
is_flat,
},
}),
_ => item,
}
}
fn convert_params(&self, params: Vec<FnParamMetadata>) -> Vec<FnParamMetadata> {
params
.into_iter()
.map(|param| FnParamMetadata {
ty: self.convert_type(param.ty),
..param
})
.collect()
}
fn convert_fields(&self, fields: Vec<FieldMetadata>) -> Vec<FieldMetadata> {
fields
.into_iter()
.map(|field| FieldMetadata {
ty: self.convert_type(field.ty),
..field
})
.collect()
}
fn convert_enum(&self, enum_: EnumMetadata) -> EnumMetadata {
EnumMetadata {
variants: enum_
.variants
.into_iter()
.map(|variant| VariantMetadata {
fields: self.convert_fields(variant.fields),
..variant
})
.collect(),
..enum_
}
}
fn convert_optional(&self, ty: Option<Type>) -> Option<Type> {
ty.map(|ty| self.convert_type(ty))
}
fn convert_type(&self, ty: Type) -> Type {
match ty {
// Convert `ty` if it's external
Type::Enum { module_path, name } | Type::Record { module_path, name }
if self.is_module_path_external(&module_path) =>
{
Type::External {
namespace: self.crate_to_namespace(&module_path),
module_path,
name,
kind: ExternalKind::DataClass,
tagged: false,
}
}
Type::Custom {
module_path, name, ..
} if self.is_module_path_external(&module_path) => {
// For now, it's safe to assume that all custom types are data classes.
// There's no reason to use a custom type with an interface.
Type::External {
namespace: self.crate_to_namespace(&module_path),
module_path,
name,
kind: ExternalKind::DataClass,
tagged: false,
}
}
Type::Object {
module_path, name, ..
} if self.is_module_path_external(&module_path) => Type::External {
namespace: self.crate_to_namespace(&module_path),
module_path,
name,
kind: ExternalKind::Interface,
tagged: false,
},
Type::CallbackInterface { module_path, name }
if self.is_module_path_external(&module_path) =>
{
panic!("External callback interfaces not supported ({name})")
}
// Convert child types
Type::Custom {
module_path,
name,
builtin,
..
} => Type::Custom {
module_path,
name,
builtin: Box::new(self.convert_type(*builtin)),
},
Type::Optional { inner_type } => Type::Optional {
inner_type: Box::new(self.convert_type(*inner_type)),
},
Type::Sequence { inner_type } => Type::Sequence {
inner_type: Box::new(self.convert_type(*inner_type)),
},
Type::Map {
key_type,
value_type,
} => Type::Map {
key_type: Box::new(self.convert_type(*key_type)),
value_type: Box::new(self.convert_type(*value_type)),
},
// Existing External types probably need namespace fixed.
Type::External {
namespace,
module_path,
name,
kind,
tagged,
} => {
assert!(namespace.is_empty());
Type::External {
namespace: self.crate_to_namespace(&module_path),
module_path,
name,
kind,
tagged,
}
}
// Otherwise, just return the type unchanged
_ => ty,
}
}
fn is_module_path_external(&self, module_path: &str) -> bool {
calc_crate_name(module_path) != self.crate_name
}
}
fn calc_crate_name(module_path: &str) -> &str {
module_path.split("::").next().unwrap()
}
|
