From fd030f9450ed6910677e30f8fa65b06e71fcffa2 Mon Sep 17 00:00:00 2001 From: Aleksey Kladov Date: Sat, 2 May 2020 01:12:37 +0200 Subject: Revert "Merge #4233" This reverts commit a5f2b16366f027ad60c58266a66eb7fbdcbda9f9, reversing changes made to c96b2180c1c4206a0a98c280b4d30897eb116336. --- crates/ra_hir_def/src/body/lower.rs | 4 +++ crates/ra_hir_def/src/expr.rs | 4 +++ crates/ra_hir_ty/src/infer/expr.rs | 5 ++++ crates/ra_parser/src/grammar/expressions/atom.rs | 6 ++-- crates/ra_parser/src/syntax_kind/generated.rs | 1 + crates/ra_syntax/src/ast.rs | 4 +-- crates/ra_syntax/src/ast/expr_extensions.rs | 27 ++++------------- crates/ra_syntax/src/ast/generated/nodes.rs | 37 ++++++++++++++++++++++-- 8 files changed, 59 insertions(+), 29 deletions(-) (limited to 'crates') diff --git a/crates/ra_hir_def/src/body/lower.rs b/crates/ra_hir_def/src/body/lower.rs index e9dd65b0a..f06cc115b 100644 --- a/crates/ra_hir_def/src/body/lower.rs +++ b/crates/ra_hir_def/src/body/lower.rs @@ -203,6 +203,10 @@ impl ExprCollector<'_> { self.alloc_expr(Expr::If { condition, then_branch, else_branch }, syntax_ptr) } + ast::Expr::TryBlockExpr(e) => { + let body = self.collect_block_opt(e.body()); + self.alloc_expr(Expr::TryBlock { body }, syntax_ptr) + } ast::Expr::BlockExpr(e) => self.collect_block(e), ast::Expr::LoopExpr(e) => { let body = self.collect_block_opt(e.loop_body()); diff --git a/crates/ra_hir_def/src/expr.rs b/crates/ra_hir_def/src/expr.rs index aad12e123..a0cdad529 100644 --- a/crates/ra_hir_def/src/expr.rs +++ b/crates/ra_hir_def/src/expr.rs @@ -101,6 +101,9 @@ pub enum Expr { Try { expr: ExprId, }, + TryBlock { + body: ExprId, + }, Cast { expr: ExprId, type_ref: TypeRef, @@ -236,6 +239,7 @@ impl Expr { f(*expr); } } + Expr::TryBlock { body } => f(*body), Expr::Loop { body } => f(*body), Expr::While { condition, body } => { f(*condition); diff --git a/crates/ra_hir_ty/src/infer/expr.rs b/crates/ra_hir_ty/src/infer/expr.rs index efc60986b..83f946eee 100644 --- a/crates/ra_hir_ty/src/infer/expr.rs +++ b/crates/ra_hir_ty/src/infer/expr.rs @@ -73,6 +73,11 @@ impl<'a> InferenceContext<'a> { self.coerce_merge_branch(&then_ty, &else_ty) } Expr::Block { statements, tail } => self.infer_block(statements, *tail, expected), + Expr::TryBlock { body } => { + let _inner = self.infer_expr(*body, expected); + // FIXME should be std::result::Result<{inner}, _> + Ty::Unknown + } Expr::Loop { body } => { self.infer_expr(*body, &Expectation::has_type(Ty::unit())); // FIXME handle break with value diff --git a/crates/ra_parser/src/grammar/expressions/atom.rs b/crates/ra_parser/src/grammar/expressions/atom.rs index 76aa601cb..166dfc472 100644 --- a/crates/ra_parser/src/grammar/expressions/atom.rs +++ b/crates/ra_parser/src/grammar/expressions/atom.rs @@ -84,7 +84,7 @@ pub(super) fn atom_expr(p: &mut Parser, r: Restrictions) -> Option<(CompletedMar T![box] => box_expr(p, None), T![for] => for_expr(p, None), T![while] => while_expr(p, None), - T![try] => try_expr(p, None), + T![try] => try_block_expr(p, None), LIFETIME if la == T![:] => { let m = p.start(); label(p); @@ -134,7 +134,7 @@ pub(super) fn atom_expr(p: &mut Parser, r: Restrictions) -> Option<(CompletedMar } }; let blocklike = match done.kind() { - IF_EXPR | WHILE_EXPR | FOR_EXPR | LOOP_EXPR | MATCH_EXPR | BLOCK_EXPR | TRY_EXPR => { + IF_EXPR | WHILE_EXPR | FOR_EXPR | LOOP_EXPR | MATCH_EXPR | BLOCK_EXPR | TRY_BLOCK_EXPR => { BlockLike::Block } _ => BlockLike::NotBlock, @@ -532,7 +532,7 @@ fn break_expr(p: &mut Parser, r: Restrictions) -> CompletedMarker { // fn foo() { // let _ = try {}; // } -fn try_expr(p: &mut Parser, m: Option) -> CompletedMarker { +fn try_block_expr(p: &mut Parser, m: Option) -> CompletedMarker { assert!(p.at(T![try])); let m = m.unwrap_or_else(|| p.start()); // Special-case `try!` as macro. diff --git a/crates/ra_parser/src/syntax_kind/generated.rs b/crates/ra_parser/src/syntax_kind/generated.rs index ab727ed7e..524e7d784 100644 --- a/crates/ra_parser/src/syntax_kind/generated.rs +++ b/crates/ra_parser/src/syntax_kind/generated.rs @@ -191,6 +191,7 @@ pub enum SyntaxKind { RECORD_LIT, RECORD_FIELD_LIST, RECORD_FIELD, + TRY_BLOCK_EXPR, BOX_EXPR, CALL_EXPR, INDEX_EXPR, diff --git a/crates/ra_syntax/src/ast.rs b/crates/ra_syntax/src/ast.rs index 521ca8ab8..a716e525b 100644 --- a/crates/ra_syntax/src/ast.rs +++ b/crates/ra_syntax/src/ast.rs @@ -16,9 +16,7 @@ use crate::{ }; pub use self::{ - expr_extensions::{ - ArrayExprKind, BinOp, BlockModifier, ElseBranch, LiteralKind, PrefixOp, RangeOp, - }, + expr_extensions::{ArrayExprKind, BinOp, ElseBranch, LiteralKind, PrefixOp, RangeOp}, extensions::{ AttrKind, FieldKind, NameOrNameRef, PathSegmentKind, SelfParamKind, SlicePatComponents, StructKind, TypeBoundKind, VisibilityKind, diff --git a/crates/ra_syntax/src/ast/expr_extensions.rs b/crates/ra_syntax/src/ast/expr_extensions.rs index 352c0d2c5..ecf74fd36 100644 --- a/crates/ra_syntax/src/ast/expr_extensions.rs +++ b/crates/ra_syntax/src/ast/expr_extensions.rs @@ -16,7 +16,7 @@ impl ast::Expr { | ast::Expr::WhileExpr(_) | ast::Expr::BlockExpr(_) | ast::Expr::MatchExpr(_) - | ast::Expr::TryExpr(_) => true, + | ast::Expr::TryBlockExpr(_) => true, _ => false, } } @@ -359,22 +359,7 @@ impl ast::Literal { } } -pub enum BlockModifier { - Async(SyntaxToken), - Unsafe(SyntaxToken), -} - impl ast::BlockExpr { - pub fn modifier(&self) -> Option { - if let Some(token) = self.async_token() { - return Some(BlockModifier::Async(token)); - } - if let Some(token) = self.unsafe_token() { - return Some(BlockModifier::Unsafe(token)); - } - None - } - /// false if the block is an intrinsic part of the syntax and can't be /// replaced with arbitrary expression. /// @@ -383,15 +368,15 @@ impl ast::BlockExpr { /// const FOO: () = { stand_alone }; /// ``` pub fn is_standalone(&self) -> bool { - if self.modifier().is_some() { + if self.unsafe_token().is_some() || self.async_token().is_some() { return false; } - let parent = match self.syntax().parent() { - Some(it) => it, + let kind = match self.syntax().parent() { None => return true, + Some(it) => it.kind(), }; - match parent.kind() { - FN_DEF | IF_EXPR | WHILE_EXPR | LOOP_EXPR => false, + match kind { + FN_DEF | IF_EXPR | WHILE_EXPR | LOOP_EXPR | TRY_BLOCK_EXPR => false, _ => true, } } diff --git a/crates/ra_syntax/src/ast/generated/nodes.rs b/crates/ra_syntax/src/ast/generated/nodes.rs index 3f16592b6..2096f12f1 100644 --- a/crates/ra_syntax/src/ast/generated/nodes.rs +++ b/crates/ra_syntax/src/ast/generated/nodes.rs @@ -475,6 +475,16 @@ impl LoopExpr { pub fn loop_token(&self) -> Option { support::token(&self.syntax, T![loop]) } } +#[derive(Debug, Clone, PartialEq, Eq, Hash)] +pub struct TryBlockExpr { + pub(crate) syntax: SyntaxNode, +} +impl ast::AttrsOwner for TryBlockExpr {} +impl TryBlockExpr { + pub fn try_token(&self) -> Option { support::token(&self.syntax, T![try]) } + pub fn body(&self) -> Option { support::child(&self.syntax) } +} + #[derive(Debug, Clone, PartialEq, Eq, Hash)] pub struct ForExpr { pub(crate) syntax: SyntaxNode, @@ -1467,6 +1477,7 @@ pub enum Expr { FieldExpr(FieldExpr), AwaitExpr(AwaitExpr), TryExpr(TryExpr), + TryBlockExpr(TryBlockExpr), CastExpr(CastExpr), RefExpr(RefExpr), PrefixExpr(PrefixExpr), @@ -1949,6 +1960,17 @@ impl AstNode for LoopExpr { } fn syntax(&self) -> &SyntaxNode { &self.syntax } } +impl AstNode for TryBlockExpr { + fn can_cast(kind: SyntaxKind) -> bool { kind == TRY_BLOCK_EXPR } + fn cast(syntax: SyntaxNode) -> Option { + if Self::can_cast(syntax.kind()) { + Some(Self { syntax }) + } else { + None + } + } + fn syntax(&self) -> &SyntaxNode { &self.syntax } +} impl AstNode for ForExpr { fn can_cast(kind: SyntaxKind) -> bool { kind == FOR_EXPR } fn cast(syntax: SyntaxNode) -> Option { @@ -3290,6 +3312,9 @@ impl From for Expr { impl From for Expr { fn from(node: TryExpr) -> Expr { Expr::TryExpr(node) } } +impl From for Expr { + fn from(node: TryBlockExpr) -> Expr { Expr::TryBlockExpr(node) } +} impl From for Expr { fn from(node: CastExpr) -> Expr { Expr::CastExpr(node) } } @@ -3320,8 +3345,9 @@ impl AstNode for Expr { TUPLE_EXPR | ARRAY_EXPR | PAREN_EXPR | PATH_EXPR | LAMBDA_EXPR | IF_EXPR | LOOP_EXPR | FOR_EXPR | WHILE_EXPR | CONTINUE_EXPR | BREAK_EXPR | LABEL | BLOCK_EXPR | RETURN_EXPR | MATCH_EXPR | RECORD_LIT | CALL_EXPR | INDEX_EXPR - | METHOD_CALL_EXPR | FIELD_EXPR | AWAIT_EXPR | TRY_EXPR | CAST_EXPR | REF_EXPR - | PREFIX_EXPR | RANGE_EXPR | BIN_EXPR | LITERAL | MACRO_CALL | BOX_EXPR => true, + | METHOD_CALL_EXPR | FIELD_EXPR | AWAIT_EXPR | TRY_EXPR | TRY_BLOCK_EXPR + | CAST_EXPR | REF_EXPR | PREFIX_EXPR | RANGE_EXPR | BIN_EXPR | LITERAL | MACRO_CALL + | BOX_EXPR => true, _ => false, } } @@ -3349,6 +3375,7 @@ impl AstNode for Expr { FIELD_EXPR => Expr::FieldExpr(FieldExpr { syntax }), AWAIT_EXPR => Expr::AwaitExpr(AwaitExpr { syntax }), TRY_EXPR => Expr::TryExpr(TryExpr { syntax }), + TRY_BLOCK_EXPR => Expr::TryBlockExpr(TryBlockExpr { syntax }), CAST_EXPR => Expr::CastExpr(CastExpr { syntax }), REF_EXPR => Expr::RefExpr(RefExpr { syntax }), PREFIX_EXPR => Expr::PrefixExpr(PrefixExpr { syntax }), @@ -3385,6 +3412,7 @@ impl AstNode for Expr { Expr::FieldExpr(it) => &it.syntax, Expr::AwaitExpr(it) => &it.syntax, Expr::TryExpr(it) => &it.syntax, + Expr::TryBlockExpr(it) => &it.syntax, Expr::CastExpr(it) => &it.syntax, Expr::RefExpr(it) => &it.syntax, Expr::PrefixExpr(it) => &it.syntax, @@ -3865,6 +3893,11 @@ impl std::fmt::Display for LoopExpr { std::fmt::Display::fmt(self.syntax(), f) } } +impl std::fmt::Display for TryBlockExpr { + fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result { + std::fmt::Display::fmt(self.syntax(), f) + } +} impl std::fmt::Display for ForExpr { fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result { std::fmt::Display::fmt(self.syntax(), f) -- cgit v1.2.3