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
|
//! Functions that are used to classify an element from its definition or reference.
use hir::{FromSource, Module, ModuleSource, Path, PathResolution, Source, SourceAnalyzer};
use ra_db::FileId;
use ra_prof::profile;
use ra_syntax::{ast, match_ast, AstNode};
use test_utils::tested_by;
use super::{
name_definition::{from_assoc_item, from_module_def, from_struct_field},
NameDefinition, NameKind,
};
use crate::db::RootDatabase;
pub(crate) fn classify_name(
db: &RootDatabase,
file_id: FileId,
name: &ast::Name,
) -> Option<NameDefinition> {
let _p = profile("classify_name");
let parent = name.syntax().parent()?;
let file_id = file_id.into();
// FIXME: add ast::MacroCall(it)
match_ast! {
match parent {
ast::BindPat(it) => {
let src = hir::Source { file_id, ast: it };
let local = hir::Local::from_source(db, src)?;
Some(NameDefinition {
visibility: None,
container: local.module(db),
kind: NameKind::Local(local),
})
},
ast::RecordFieldDef(it) => {
let ast = hir::FieldSource::Named(it);
let src = hir::Source { file_id, ast };
let field = hir::StructField::from_source(db, src)?;
Some(from_struct_field(db, field))
},
ast::Module(it) => {
let def = {
if !it.has_semi() {
let ast = hir::ModuleSource::Module(it);
let src = hir::Source { file_id, ast };
hir::Module::from_definition(db, src)
} else {
let src = hir::Source { file_id, ast: it };
hir::Module::from_declaration(db, src)
}
}?;
Some(from_module_def(db, def.into(), None))
},
ast::StructDef(it) => {
let src = hir::Source { file_id, ast: it };
let def = hir::Struct::from_source(db, src)?;
Some(from_module_def(db, def.into(), None))
},
ast::EnumDef(it) => {
let src = hir::Source { file_id, ast: it };
let def = hir::Enum::from_source(db, src)?;
Some(from_module_def(db, def.into(), None))
},
ast::TraitDef(it) => {
let src = hir::Source { file_id, ast: it };
let def = hir::Trait::from_source(db, src)?;
Some(from_module_def(db, def.into(), None))
},
ast::StaticDef(it) => {
let src = hir::Source { file_id, ast: it };
let def = hir::Static::from_source(db, src)?;
Some(from_module_def(db, def.into(), None))
},
ast::EnumVariant(it) => {
let src = hir::Source { file_id, ast: it };
let def = hir::EnumVariant::from_source(db, src)?;
Some(from_module_def(db, def.into(), None))
},
ast::FnDef(it) => {
let src = hir::Source { file_id, ast: it };
let def = hir::Function::from_source(db, src)?;
if parent.parent().and_then(ast::ItemList::cast).is_some() {
Some(from_assoc_item(db, def.into()))
} else {
Some(from_module_def(db, def.into(), None))
}
},
ast::ConstDef(it) => {
let src = hir::Source { file_id, ast: it };
let def = hir::Const::from_source(db, src)?;
if parent.parent().and_then(ast::ItemList::cast).is_some() {
Some(from_assoc_item(db, def.into()))
} else {
Some(from_module_def(db, def.into(), None))
}
},
ast::TypeAliasDef(it) => {
let src = hir::Source { file_id, ast: it };
let def = hir::TypeAlias::from_source(db, src)?;
if parent.parent().and_then(ast::ItemList::cast).is_some() {
Some(from_assoc_item(db, def.into()))
} else {
Some(from_module_def(db, def.into(), None))
}
},
_ => None,
}
}
}
pub(crate) fn classify_name_ref(
db: &RootDatabase,
file_id: FileId,
name_ref: &ast::NameRef,
) -> Option<NameDefinition> {
let _p = profile("classify_name_ref");
let parent = name_ref.syntax().parent()?;
let analyzer =
SourceAnalyzer::new(db, hir::Source::new(file_id.into(), name_ref.syntax()), None);
if let Some(method_call) = ast::MethodCallExpr::cast(parent.clone()) {
tested_by!(goto_definition_works_for_methods);
if let Some(func) = analyzer.resolve_method_call(&method_call) {
return Some(from_assoc_item(db, func.into()));
}
}
if let Some(field_expr) = ast::FieldExpr::cast(parent.clone()) {
tested_by!(goto_definition_works_for_fields);
if let Some(field) = analyzer.resolve_field(&field_expr) {
return Some(from_struct_field(db, field));
}
}
if let Some(record_field) = ast::RecordField::cast(parent.clone()) {
tested_by!(goto_definition_works_for_record_fields);
if let Some(record_lit) = record_field.syntax().ancestors().find_map(ast::RecordLit::cast) {
let variant_def = analyzer.resolve_record_literal(&record_lit)?;
let hir_path = Path::from_name_ref(name_ref);
let hir_name = hir_path.as_ident()?;
let field = variant_def.field(db, hir_name)?;
return Some(from_struct_field(db, field));
}
}
let file_id = file_id.into();
let ast = ModuleSource::from_child_node(db, Source::new(file_id, &parent));
// FIXME: find correct container and visibility for each case
let container = Module::from_definition(db, Source { file_id, ast })?;
let visibility = None;
if let Some(macro_call) = parent.ancestors().find_map(ast::MacroCall::cast) {
tested_by!(goto_definition_works_for_macros);
if let Some(macro_def) = analyzer.resolve_macro_call(db, ¯o_call) {
let kind = NameKind::Macro(macro_def);
return Some(NameDefinition { kind, container, visibility });
}
}
let path = name_ref.syntax().ancestors().find_map(ast::Path::cast)?;
let resolved = analyzer.resolve_path(db, &path)?;
match resolved {
PathResolution::Def(def) => Some(from_module_def(db, def, Some(container))),
PathResolution::AssocItem(item) => Some(from_assoc_item(db, item)),
PathResolution::Local(local) => {
let container = local.module(db);
let kind = NameKind::Local(local);
Some(NameDefinition { kind, container, visibility: None })
}
PathResolution::GenericParam(par) => {
// FIXME: get generic param def
let kind = NameKind::GenericParam(par);
Some(NameDefinition { kind, container, visibility })
}
PathResolution::Macro(def) => {
let kind = NameKind::Macro(def);
Some(NameDefinition { kind, container, visibility })
}
PathResolution::SelfType(impl_block) => {
let ty = impl_block.target_ty(db);
let kind = NameKind::SelfType(ty);
let container = impl_block.module(db);
Some(NameDefinition { kind, container, visibility })
}
}
}
|