From 3befd1a9e82809fef5bc68950d3265dbcbbd5527 Mon Sep 17 00:00:00 2001 From: Florian Diebold Date: Tue, 25 Dec 2018 15:44:10 +0100 Subject: Cleanup --- crates/ra_hir/src/ty.rs | 162 +++++++++++------------------------------------- 1 file changed, 37 insertions(+), 125 deletions(-) (limited to 'crates') diff --git a/crates/ra_hir/src/ty.rs b/crates/ra_hir/src/ty.rs index 83da13f1a..7b8dbe6b7 100644 --- a/crates/ra_hir/src/ty.rs +++ b/crates/ra_hir/src/ty.rs @@ -239,19 +239,11 @@ pub fn type_for_fn(db: &impl HirDatabase, f: Function) -> Cancelable { .param_list() .map(|pl| { pl.params() - .map(|p| { - p.type_ref() - .map(|t| Ty::new(db, &module, t)) - .unwrap_or(Ok(Ty::Unknown)) - }) + .map(|p| Ty::new_opt(db, &module, p.type_ref())) .collect() }) .unwrap_or_else(|| Ok(Vec::new()))?; - let output = node - .ret_type() - .and_then(|rt| rt.type_ref()) - .map(|t| Ty::new(db, &module, t)) - .unwrap_or(Ok(Ty::Unknown))?; + let output = Ty::new_opt(db, &module, node.ret_type().and_then(|rt| rt.type_ref()))?; let sig = FnSig { input, output }; Ok(Ty::FnPtr(Arc::new(sig))) } @@ -263,11 +255,6 @@ pub fn type_for_struct(db: &impl HirDatabase, s: Struct) -> Cancelable { }) } -// TODO this should probably be per namespace (i.e. types vs. values), since for -// a tuple struct `struct Foo(Bar)`, Foo has function type as a value, but -// defines the struct type Foo when used in the type namespace. rustc has a -// separate DefId for the constructor, but with the current DefId approach, that -// seems complicated. pub fn type_for_def(db: &impl HirDatabase, def_id: DefId) -> Cancelable { let def = def_id.resolve(db)?; match def { @@ -396,22 +383,12 @@ impl<'a, D: HirDatabase> InferenceContext<'a, D> { let ty = match expr { ast::Expr::IfExpr(e) => { if let Some(condition) = e.condition() { - if let Some(e) = condition.expr() { - // TODO if no pat, this should be bool - self.infer_expr(e)?; - } + // TODO if no pat, this should be bool + self.infer_expr_opt(condition.expr())?; // TODO write type for pat }; - let if_ty = if let Some(block) = e.then_branch() { - self.infer_block(block)? - } else { - Ty::Unknown - }; - let else_ty = if let Some(block) = e.else_branch() { - self.infer_block(block)? - } else { - Ty::Unknown - }; + let if_ty = self.infer_block_opt(e.then_branch())?; + let else_ty = self.infer_block_opt(e.else_branch())?; if let Some(ty) = self.unify(&if_ty, &else_ty) { ty } else { @@ -419,62 +396,37 @@ impl<'a, D: HirDatabase> InferenceContext<'a, D> { Ty::Unknown } } - ast::Expr::BlockExpr(e) => { - if let Some(block) = e.block() { - self.infer_block(block)? - } else { - Ty::Unknown - } - } + ast::Expr::BlockExpr(e) => self.infer_block_opt(e.block())?, ast::Expr::LoopExpr(e) => { - if let Some(block) = e.loop_body() { - self.infer_block(block)?; - }; + self.infer_block_opt(e.loop_body())?; // TODO never, or the type of the break param Ty::Unknown } ast::Expr::WhileExpr(e) => { if let Some(condition) = e.condition() { - if let Some(e) = condition.expr() { - // TODO if no pat, this should be bool - self.infer_expr(e)?; - } + // TODO if no pat, this should be bool + self.infer_expr_opt(condition.expr())?; // TODO write type for pat }; - if let Some(block) = e.loop_body() { - // TODO - self.infer_block(block)?; - }; + self.infer_block_opt(e.loop_body())?; // TODO always unit? Ty::Unknown } ast::Expr::ForExpr(e) => { - if let Some(expr) = e.iterable() { - self.infer_expr(expr)?; - } + let _iterable_ty = self.infer_expr_opt(e.iterable()); if let Some(_pat) = e.pat() { // TODO write type for pat } - if let Some(block) = e.loop_body() { - self.infer_block(block)?; - } + self.infer_block_opt(e.loop_body())?; // TODO always unit? Ty::Unknown } ast::Expr::LambdaExpr(e) => { - let _body_ty = if let Some(body) = e.body() { - self.infer_expr(body)? - } else { - Ty::Unknown - }; + let _body_ty = self.infer_expr_opt(e.body())?; Ty::Unknown } ast::Expr::CallExpr(e) => { - let callee_ty = if let Some(e) = e.expr() { - self.infer_expr(e)? - } else { - Ty::Unknown - }; + let callee_ty = self.infer_expr_opt(e.expr())?; if let Some(arg_list) = e.arg_list() { for arg in arg_list.args() { // TODO unify / expect argument type @@ -491,11 +443,7 @@ impl<'a, D: HirDatabase> InferenceContext<'a, D> { } } ast::Expr::MethodCallExpr(e) => { - let _receiver_ty = if let Some(e) = e.expr() { - self.infer_expr(e)? - } else { - Ty::Unknown - }; + let _receiver_ty = self.infer_expr_opt(e.expr())?; if let Some(arg_list) = e.arg_list() { for arg in arg_list.args() { // TODO unify / expect argument type @@ -505,20 +453,12 @@ impl<'a, D: HirDatabase> InferenceContext<'a, D> { Ty::Unknown } ast::Expr::MatchExpr(e) => { - let _ty = if let Some(match_expr) = e.expr() { - self.infer_expr(match_expr)? - } else { - Ty::Unknown - }; + let _ty = self.infer_expr_opt(e.expr())?; if let Some(match_arm_list) = e.match_arm_list() { for arm in match_arm_list.arms() { // TODO type the bindings in pat // TODO type the guard - let _ty = if let Some(e) = arm.expr() { - self.infer_expr(e)? - } else { - Ty::Unknown - }; + let _ty = self.infer_expr_opt(arm.expr())?; } // TODO unify all the match arm types Ty::Unknown @@ -531,19 +471,10 @@ impl<'a, D: HirDatabase> InferenceContext<'a, D> { ast::Expr::PathExpr(e) => self.infer_path_expr(e)?.unwrap_or(Ty::Unknown), ast::Expr::ContinueExpr(_e) => Ty::Never, ast::Expr::BreakExpr(_e) => Ty::Never, - ast::Expr::ParenExpr(e) => { - if let Some(e) = e.expr() { - self.infer_expr(e)? - } else { - Ty::Unknown - } - } + ast::Expr::ParenExpr(e) => self.infer_expr_opt(e.expr())?, ast::Expr::Label(_e) => Ty::Unknown, ast::Expr::ReturnExpr(e) => { - if let Some(e) = e.expr() { - // TODO unify with / expect return type - self.infer_expr(e)?; - }; + self.infer_expr_opt(e.expr())?; Ty::Never } ast::Expr::MatchArmList(_) | ast::Expr::MatchArm(_) | ast::Expr::MatchGuard(_) => { @@ -554,10 +485,8 @@ impl<'a, D: HirDatabase> InferenceContext<'a, D> { let (ty, _variant_data) = self.resolve_variant(e.path())?; if let Some(nfl) = e.named_field_list() { for field in nfl.fields() { - if let Some(e) = field.expr() { - // TODO unify with / expect field type - self.infer_expr(e)?; - } + // TODO unify with / expect field type + self.infer_expr_opt(field.expr())?; } } ty @@ -592,40 +521,21 @@ impl<'a, D: HirDatabase> InferenceContext<'a, D> { } } ast::Expr::TryExpr(e) => { - let _inner_ty = if let Some(e) = e.expr() { - self.infer_expr(e)? - } else { - Ty::Unknown - }; + let _inner_ty = self.infer_expr_opt(e.expr())?; Ty::Unknown } ast::Expr::CastExpr(e) => { - let _inner_ty = if let Some(e) = e.expr() { - self.infer_expr(e)? - } else { - Ty::Unknown - }; - let cast_ty = e - .type_ref() - .map(|t| Ty::new(self.db, &self.module, t)) - .unwrap_or(Ok(Ty::Unknown))?; + let _inner_ty = self.infer_expr_opt(e.expr())?; + let cast_ty = Ty::new_opt(self.db, &self.module, e.type_ref())?; // TODO do the coercion... cast_ty } ast::Expr::RefExpr(e) => { - let _inner_ty = if let Some(e) = e.expr() { - self.infer_expr(e)? - } else { - Ty::Unknown - }; + let _inner_ty = self.infer_expr_opt(e.expr())?; Ty::Unknown } ast::Expr::PrefixExpr(e) => { - let _inner_ty = if let Some(e) = e.expr() { - self.infer_expr(e)? - } else { - Ty::Unknown - }; + let _inner_ty = self.infer_expr_opt(e.expr())?; Ty::Unknown } ast::Expr::RangeExpr(_e) => Ty::Unknown, @@ -636,15 +546,19 @@ impl<'a, D: HirDatabase> InferenceContext<'a, D> { Ok(ty) } + fn infer_block_opt(&mut self, node: Option) -> Cancelable { + if let Some(b) = node { + self.infer_block(b) + } else { + Ok(Ty::Unknown) + } + } + fn infer_block(&mut self, node: ast::Block) -> Cancelable { for stmt in node.statements() { match stmt { ast::Stmt::LetStmt(stmt) => { - let decl_ty = if let Some(type_ref) = stmt.type_ref() { - Ty::new(self.db, &self.module, type_ref)? - } else { - Ty::Unknown - }; + let decl_ty = Ty::new_opt(self.db, &self.module, stmt.type_ref())?; let ty = if let Some(expr) = stmt.initializer() { // TODO pass expectation let expr_ty = self.infer_expr(expr)?; @@ -659,9 +573,7 @@ impl<'a, D: HirDatabase> InferenceContext<'a, D> { }; } ast::Stmt::ExprStmt(expr_stmt) => { - if let Some(expr) = expr_stmt.expr() { - self.infer_expr(expr)?; - } + self.infer_expr_opt(expr_stmt.expr())?; } } } -- cgit v1.2.3