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|
use hir::{
db::AstDatabase, Adt, AssocItem, DefWithBody, FromSource, HasSource, HirFileId, MacroDef,
Module, ModuleDef, SourceAnalyzer, StructField, Ty, VariantDef,
};
use ra_syntax::{ast, ast::VisibilityOwner, AstNode, AstPtr};
use crate::db::RootDatabase;
#[derive(Debug, PartialEq, Eq)]
pub enum NameKind {
Macro(MacroDef),
FieldAccess(StructField),
AssocItem(AssocItem),
Def(ModuleDef),
SelfType(Ty),
Pat((DefWithBody, AstPtr<ast::BindPat>)),
SelfParam(AstPtr<ast::SelfParam>),
GenericParam(u32),
}
#[derive(PartialEq, Eq)]
pub(crate) struct Definition {
pub visibility: Option<ast::Visibility>,
pub container: Module,
pub item: NameKind,
}
pub(super) trait HasDefinition {
type Def;
type Ref;
fn definition(self, db: &RootDatabase) -> Definition;
fn from_def(db: &RootDatabase, file_id: HirFileId, def: Self::Def) -> Option<Definition>;
fn from_ref(
db: &RootDatabase,
analyzer: &SourceAnalyzer,
refer: Self::Ref,
) -> Option<Definition>;
}
// fn decl_from_pat(
// db: &RootDatabase,
// file_id: HirFileId,
// pat: AstPtr<ast::BindPat>,
// ) -> Option<Definition> {
// let root = db.parse_or_expand(file_id)?;
// // FIXME: use match_ast!
// let def = pat.to_node(&root).syntax().ancestors().find_map(|node| {
// if let Some(it) = ast::FnDef::cast(node.clone()) {
// let src = hir::Source { file_id, ast: it };
// Some(hir::Function::from_source(db, src)?.into())
// } else if let Some(it) = ast::ConstDef::cast(node.clone()) {
// let src = hir::Source { file_id, ast: it };
// Some(hir::Const::from_source(db, src)?.into())
// } else if let Some(it) = ast::StaticDef::cast(node.clone()) {
// let src = hir::Source { file_id, ast: it };
// Some(hir::Static::from_source(db, src)?.into())
// } else {
// None
// }
// })?;
// let item = NameKind::Pat((def, pat));
// let container = def.module(db);
// Some(Definition { item, container, visibility: None })
// }
impl HasDefinition for StructField {
type Def = ast::RecordFieldDef;
type Ref = ast::FieldExpr;
fn definition(self, db: &RootDatabase) -> Definition {
let item = NameKind::FieldAccess(self);
let parent = self.parent_def(db);
let container = parent.module(db);
let visibility = match parent {
VariantDef::Struct(s) => s.source(db).ast.visibility(),
VariantDef::EnumVariant(e) => e.source(db).ast.parent_enum().visibility(),
};
Definition { item, container, visibility }
}
fn from_def(db: &RootDatabase, file_id: HirFileId, def: Self::Def) -> Option<Definition> {
let src = hir::Source { file_id, ast: hir::FieldSource::Named(def) };
let field = StructField::from_source(db, src)?;
Some(field.definition(db))
}
fn from_ref(
db: &RootDatabase,
analyzer: &SourceAnalyzer,
refer: Self::Ref,
) -> Option<Definition> {
let field = analyzer.resolve_field(&refer)?;
Some(field.definition(db))
}
}
impl HasDefinition for AssocItem {
type Def = ast::ImplItem;
type Ref = ast::MethodCallExpr;
fn definition(self, db: &RootDatabase) -> Definition {
let item = NameKind::AssocItem(self);
let container = self.module(db);
let visibility = match self {
AssocItem::Function(f) => f.source(db).ast.visibility(),
AssocItem::Const(c) => c.source(db).ast.visibility(),
AssocItem::TypeAlias(a) => a.source(db).ast.visibility(),
};
Definition { item, container, visibility }
}
fn from_def(db: &RootDatabase, file_id: HirFileId, def: Self::Def) -> Option<Definition> {
if def.syntax().parent().and_then(ast::ItemList::cast).is_none() {
return None;
}
let src = hir::Source { file_id, ast: def };
let item = AssocItem::from_source(db, src)?;
Some(item.definition(db))
}
fn from_ref(
db: &RootDatabase,
analyzer: &SourceAnalyzer,
refer: Self::Ref,
) -> Option<Definition> {
let func: AssocItem = analyzer.resolve_method_call(&refer)?.into();
Some(func.definition(db))
}
}
impl HasDefinition for ModuleDef {
type Def = ast::ModuleItem;
type Ref = ast::Path;
fn definition(self, db: &RootDatabase) -> Definition {
let (container, visibility) = match self {
ModuleDef::Module(it) => {
let container = it.parent(db).or_else(|| Some(it)).unwrap();
let visibility = it.declaration_source(db).and_then(|s| s.ast.visibility());
(container, visibility)
}
ModuleDef::EnumVariant(it) => {
let container = it.module(db);
let visibility = it.source(db).ast.parent_enum().visibility();
(container, visibility)
}
ModuleDef::Function(it) => (it.module(db), it.source(db).ast.visibility()),
ModuleDef::Const(it) => (it.module(db), it.source(db).ast.visibility()),
ModuleDef::Static(it) => (it.module(db), it.source(db).ast.visibility()),
ModuleDef::Trait(it) => (it.module(db), it.source(db).ast.visibility()),
ModuleDef::TypeAlias(it) => (it.module(db), it.source(db).ast.visibility()),
ModuleDef::Adt(Adt::Struct(it)) => (it.module(db), it.source(db).ast.visibility()),
ModuleDef::Adt(Adt::Union(it)) => (it.module(db), it.source(db).ast.visibility()),
ModuleDef::Adt(Adt::Enum(it)) => (it.module(db), it.source(db).ast.visibility()),
ModuleDef::BuiltinType(..) => unreachable!(),
};
let item = NameKind::Def(self);
Definition { item, container, visibility }
}
fn from_def(db: &RootDatabase, file_id: HirFileId, def: Self::Def) -> Option<Definition> {
let src = hir::Source { file_id, ast: def };
let def = ModuleDef::from_source(db, src)?;
Some(def.definition(db))
}
fn from_ref(
db: &RootDatabase,
analyzer: &SourceAnalyzer,
refer: Self::Ref,
) -> Option<Definition> {
None
}
}
// FIXME: impl HasDefinition for hir::MacroDef
|
