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use super::Module;
use crate::expr::validator::ExprValidator;
use crate::expr::BodySourceMap;
use crate::ids::{FunctionId, Lookup};
use crate::name_resolution::Namespace;
use crate::resolve::HasResolver;
use crate::type_ref::{LocalTypeRefId, TypeRefMap, TypeRefSourceMap};
use crate::visibility::RawVisibility;
use crate::{
Body, DefDatabase, DiagnosticSink, FileId, HasVisibility, HirDatabase, InferenceResult, Name,
Ty, Visibility,
};
use mun_syntax::ast::TypeAscriptionOwner;
use std::iter::once;
use std::sync::Arc;
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, Ord, PartialOrd)]
pub struct Function {
pub(crate) id: FunctionId,
}
impl From<FunctionId> for Function {
fn from(id: FunctionId) -> Self {
Function { id }
}
}
#[derive(Debug, PartialEq, Eq)]
pub struct FunctionData {
name: Name,
params: Vec<LocalTypeRefId>,
visibility: RawVisibility,
ret_type: LocalTypeRefId,
type_ref_map: TypeRefMap,
type_ref_source_map: TypeRefSourceMap,
is_extern: bool,
}
impl FunctionData {
pub(crate) fn fn_data_query(db: &dyn DefDatabase, func: FunctionId) -> Arc<FunctionData> {
let loc = func.lookup(db);
let item_tree = db.item_tree(loc.id.file_id);
let func = &item_tree[loc.id.value];
let src = item_tree.source(db, loc.id.value);
let mut type_ref_builder = TypeRefMap::builder();
let mut params = Vec::new();
if let Some(param_list) = src.param_list() {
for param in param_list.params() {
let type_ref = type_ref_builder.alloc_from_node_opt(param.ascribed_type().as_ref());
params.push(type_ref);
}
}
let ret_type = if let Some(type_ref) = src.ret_type().and_then(|rt| rt.type_ref()) {
type_ref_builder.alloc_from_node(&type_ref)
} else {
type_ref_builder.unit()
};
let (type_ref_map, type_ref_source_map) = type_ref_builder.finish();
Arc::new(FunctionData {
name: func.name.clone(),
params,
ret_type,
type_ref_map,
type_ref_source_map,
is_extern: func.is_extern,
visibility: item_tree[func.visibility].clone(),
})
}
pub fn name(&self) -> &Name {
&self.name
}
pub fn params(&self) -> &[LocalTypeRefId] {
&self.params
}
pub fn visibility(&self) -> &RawVisibility {
&self.visibility
}
pub fn ret_type(&self) -> &LocalTypeRefId {
&self.ret_type
}
pub fn type_ref_source_map(&self) -> &TypeRefSourceMap {
&self.type_ref_source_map
}
pub fn type_ref_map(&self) -> &TypeRefMap {
&self.type_ref_map
}
}
impl Function {
pub fn module(self, db: &dyn HirDatabase) -> Module {
Module {
id: self.id.lookup(db.upcast()).module,
}
}
pub fn full_name(self, db: &dyn HirDatabase) -> String {
itertools::Itertools::intersperse(
self.module(db)
.path_to_root(db)
.into_iter()
.filter_map(|module| module.name(db))
.chain(once(self.name(db)))
.map(|name| name.to_string()),
String::from("::"),
)
.collect()
}
pub fn file_id(self, db: &dyn HirDatabase) -> FileId {
self.id.lookup(db.upcast()).id.file_id
}
pub fn name(self, db: &dyn HirDatabase) -> Name {
self.data(db.upcast()).name.clone()
}
pub fn data(self, db: &dyn DefDatabase) -> Arc<FunctionData> {
db.fn_data(self.id)
}
pub fn body(self, db: &dyn HirDatabase) -> Arc<Body> {
db.body(self.id.into())
}
pub fn ty(self, db: &dyn HirDatabase) -> Ty {
db.type_for_def(self.into(), Namespace::Values).0
}
pub fn ret_type(self, db: &dyn HirDatabase) -> Ty {
let resolver = self.id.resolver(db.upcast());
let data = self.data(db.upcast());
Ty::from_hir(db, &resolver, &data.type_ref_map, data.ret_type).0
}
pub fn infer(self, db: &dyn HirDatabase) -> Arc<InferenceResult> {
db.infer(self.id.into())
}
pub fn is_extern(self, db: &dyn HirDatabase) -> bool {
db.fn_data(self.id).is_extern
}
pub(crate) fn body_source_map(self, db: &dyn HirDatabase) -> Arc<BodySourceMap> {
db.body_with_source_map(self.id.into()).1
}
pub fn diagnostics(self, db: &dyn HirDatabase, sink: &mut DiagnosticSink) {
let body = self.body(db);
body.add_diagnostics(db, self.into(), sink);
let infer = self.infer(db);
infer.add_diagnostics(db, self, sink);
let validator = ExprValidator::new(self, db);
validator.validate_body(sink);
}
}
impl HasVisibility for Function {
fn visibility(&self, db: &dyn HirDatabase) -> Visibility {
self.data(db.upcast())
.visibility
.resolve(db.upcast(), &self.id.resolver(db.upcast()))
}
}