2019-01-08 20:11:13 +03:00
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mod scope;
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use std::sync::Arc;
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2019-01-24 15:28:50 +03:00
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use ra_syntax::ast::{self, NameOwner};
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2019-01-08 20:11:13 +03:00
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use crate::{
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2019-01-24 15:28:50 +03:00
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HirDatabase, Name, AsName, Function, FnSignature, Module, HirFileId,
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2019-01-08 20:11:13 +03:00
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type_ref::{TypeRef, Mutability},
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expr::Body,
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impl_block::ImplBlock,
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2019-01-24 15:28:50 +03:00
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ids::FunctionLoc,
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2019-01-08 20:11:13 +03:00
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};
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2019-01-11 14:00:54 +03:00
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pub use self::scope::{FnScopes, ScopesWithSyntaxMapping, ScopeEntryWithSyntax};
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2019-01-08 20:11:13 +03:00
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impl Function {
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2019-01-24 15:28:50 +03:00
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pub(crate) fn from_ast(
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db: &impl HirDatabase,
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module: Module,
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file_id: HirFileId,
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ast: &ast::FnDef,
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) -> Function {
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let loc: FunctionLoc = FunctionLoc::from_ast(db, module, file_id, ast);
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let id = loc.id(db);
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Function { id }
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2019-01-08 20:11:13 +03:00
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}
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2019-01-15 19:01:59 +03:00
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pub(crate) fn body(&self, db: &impl HirDatabase) -> Arc<Body> {
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2019-01-24 15:28:50 +03:00
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db.body_hir(*self)
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2019-01-08 20:11:13 +03:00
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}
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2019-01-15 19:18:52 +03:00
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pub(crate) fn module(&self, db: &impl HirDatabase) -> Module {
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2019-01-24 15:28:50 +03:00
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self.id.loc(db).module
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2019-01-08 20:11:13 +03:00
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}
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/// The containing impl block, if this is a method.
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2019-01-15 19:18:52 +03:00
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pub(crate) fn impl_block(&self, db: &impl HirDatabase) -> Option<ImplBlock> {
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2019-01-24 15:28:50 +03:00
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let module_impls = db.impls_in_module(self.module(db));
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ImplBlock::containing(module_impls, (*self).into())
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2019-01-08 20:11:13 +03:00
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}
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}
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impl FnSignature {
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2019-01-24 15:28:50 +03:00
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pub(crate) fn fn_signature_query(db: &impl HirDatabase, func: Function) -> Arc<FnSignature> {
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let (_, node) = func.source(db);
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2019-01-08 00:30:49 +01:00
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let name = node
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.name()
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.map(|n| n.as_name())
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.unwrap_or_else(Name::missing);
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2019-01-12 21:58:16 +01:00
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let mut params = Vec::new();
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let mut has_self_param = false;
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2019-01-08 20:11:13 +03:00
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if let Some(param_list) = node.param_list() {
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if let Some(self_param) = param_list.self_param() {
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let self_type = if let Some(type_ref) = self_param.type_ref() {
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TypeRef::from_ast(type_ref)
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} else {
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let self_type = TypeRef::Path(Name::self_type().into());
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match self_param.flavor() {
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ast::SelfParamFlavor::Owned => self_type,
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ast::SelfParamFlavor::Ref => {
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TypeRef::Reference(Box::new(self_type), Mutability::Shared)
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}
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ast::SelfParamFlavor::MutRef => {
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TypeRef::Reference(Box::new(self_type), Mutability::Mut)
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}
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}
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};
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2019-01-12 21:58:16 +01:00
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params.push(self_type);
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has_self_param = true;
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2019-01-08 20:11:13 +03:00
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}
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for param in param_list.params() {
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let type_ref = TypeRef::from_ast_opt(param.type_ref());
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2019-01-12 21:58:16 +01:00
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params.push(type_ref);
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2019-01-08 20:11:13 +03:00
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}
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}
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let ret_type = if let Some(type_ref) = node.ret_type().and_then(|rt| rt.type_ref()) {
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TypeRef::from_ast(type_ref)
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} else {
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TypeRef::unit()
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};
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2019-01-21 21:42:37 -05:00
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2019-01-08 00:30:49 +01:00
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let sig = FnSignature {
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name,
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2019-01-12 21:58:16 +01:00
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params,
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2019-01-08 00:30:49 +01:00
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ret_type,
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2019-01-12 21:58:16 +01:00
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has_self_param,
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2019-01-08 00:30:49 +01:00
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};
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2019-01-08 20:11:13 +03:00
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Arc::new(sig)
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}
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}
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