diff options
Diffstat (limited to 'src/tools/rust-analyzer/crates/hir-expand')
8 files changed, 370 insertions, 66 deletions
diff --git a/src/tools/rust-analyzer/crates/hir-expand/src/ast_id_map.rs b/src/tools/rust-analyzer/crates/hir-expand/src/ast_id_map.rs index c1ddef03b..11c0a6764 100644 --- a/src/tools/rust-analyzer/crates/hir-expand/src/ast_id_map.rs +++ b/src/tools/rust-analyzer/crates/hir-expand/src/ast_id_map.rs @@ -15,7 +15,7 @@ use std::{ use la_arena::{Arena, Idx}; use profile::Count; use rustc_hash::FxHasher; -use syntax::{ast, match_ast, AstNode, AstPtr, SyntaxNode, SyntaxNodePtr}; +use syntax::{ast, AstNode, AstPtr, SyntaxNode, SyntaxNodePtr}; /// `AstId` points to an AST node in a specific file. pub struct FileAstId<N: AstNode> { @@ -92,18 +92,12 @@ impl AstIdMap { // change parent's id. This means that, say, adding a new function to a // trait does not change ids of top-level items, which helps caching. bdfs(node, |it| { - match_ast! { - match it { - ast::Item(module_item) => { - res.alloc(module_item.syntax()); - true - }, - ast::BlockExpr(block) => { - res.alloc(block.syntax()); - true - }, - _ => false, - } + let kind = it.kind(); + if ast::Item::can_cast(kind) || ast::BlockExpr::can_cast(kind) { + res.alloc(&it); + true + } else { + false } }); res.map = hashbrown::HashMap::with_capacity_and_hasher(res.arena.len(), ()); @@ -123,6 +117,7 @@ impl AstIdMap { let raw = self.erased_ast_id(item.syntax()); FileAstId { raw, _ty: PhantomData } } + fn erased_ast_id(&self, item: &SyntaxNode) -> ErasedFileAstId { let ptr = SyntaxNodePtr::new(item); let hash = hash_ptr(&ptr); diff --git a/src/tools/rust-analyzer/crates/hir-expand/src/builtin_fn_macro.rs b/src/tools/rust-analyzer/crates/hir-expand/src/builtin_fn_macro.rs index 76da7c9f1..8befa7f7d 100644 --- a/src/tools/rust-analyzer/crates/hir-expand/src/builtin_fn_macro.rs +++ b/src/tools/rust-analyzer/crates/hir-expand/src/builtin_fn_macro.rs @@ -251,9 +251,13 @@ fn format_args_expand( } for arg in &mut args { // Remove `key =`. - if matches!(arg.token_trees.get(1), Some(tt::TokenTree::Leaf(tt::Leaf::Punct(p))) if p.char == '=' && p.spacing != tt::Spacing::Joint) + if matches!(arg.token_trees.get(1), Some(tt::TokenTree::Leaf(tt::Leaf::Punct(p))) if p.char == '=') { - arg.token_trees.drain(..2); + // but not with `==` + if !matches!(arg.token_trees.get(2), Some(tt::TokenTree::Leaf(tt::Leaf::Punct(p))) if p.char == '=' ) + { + arg.token_trees.drain(..2); + } } } let _format_string = args.remove(0); @@ -357,6 +361,12 @@ fn unquote_str(lit: &tt::Literal) -> Option<String> { token.value().map(|it| it.into_owned()) } +fn unquote_char(lit: &tt::Literal) -> Option<char> { + let lit = ast::make::tokens::literal(&lit.to_string()); + let token = ast::Char::cast(lit)?; + token.value() +} + fn unquote_byte_string(lit: &tt::Literal) -> Option<Vec<u8>> { let lit = ast::make::tokens::literal(&lit.to_string()); let token = ast::ByteString::cast(lit)?; @@ -408,8 +418,12 @@ fn concat_expand( // concat works with string and char literals, so remove any quotes. // It also works with integer, float and boolean literals, so just use the rest // as-is. - let component = unquote_str(it).unwrap_or_else(|| it.text.to_string()); - text.push_str(&component); + if let Some(c) = unquote_char(it) { + text.push(c); + } else { + let component = unquote_str(it).unwrap_or_else(|| it.text.to_string()); + text.push_str(&component); + } } // handle boolean literals tt::TokenTree::Leaf(tt::Leaf::Ident(id)) diff --git a/src/tools/rust-analyzer/crates/hir-expand/src/db.rs b/src/tools/rust-analyzer/crates/hir-expand/src/db.rs index bd60c3d26..bc97ee15c 100644 --- a/src/tools/rust-analyzer/crates/hir-expand/src/db.rs +++ b/src/tools/rust-analyzer/crates/hir-expand/src/db.rs @@ -321,7 +321,11 @@ fn censor_for_macro_input(loc: &MacroCallLoc, node: &SyntaxNode) -> FxHashSet<Sy ast::Item::cast(node.clone())? .attrs() .take(derive_attr_index as usize + 1) - // FIXME + // FIXME, this resolution should not be done syntactically + // derive is a proper macro now, no longer builtin + // But we do not have resolution at this stage, this means + // we need to know about all macro calls for the given ast item here + // so we require some kind of mapping... .filter(|attr| attr.simple_name().as_deref() == Some("derive")) .map(|it| it.syntax().clone()) .collect() diff --git a/src/tools/rust-analyzer/crates/hir-expand/src/fixup.rs b/src/tools/rust-analyzer/crates/hir-expand/src/fixup.rs index 9999790fa..893e6fe4b 100644 --- a/src/tools/rust-analyzer/crates/hir-expand/src/fixup.rs +++ b/src/tools/rust-analyzer/crates/hir-expand/src/fixup.rs @@ -5,7 +5,7 @@ use std::mem; use mbe::{SyntheticToken, SyntheticTokenId, TokenMap}; use rustc_hash::FxHashMap; use syntax::{ - ast::{self, AstNode}, + ast::{self, AstNode, HasLoopBody}, match_ast, SyntaxElement, SyntaxKind, SyntaxNode, TextRange, }; use tt::Subtree; @@ -67,7 +67,6 @@ pub(crate) fn fixup_syntax(node: &SyntaxNode) -> SyntaxFixups { preorder.skip_subtree(); continue; } - // In some other situations, we can fix things by just appending some tokens. let end_range = TextRange::empty(node.text_range().end()); match_ast! { @@ -142,8 +141,127 @@ pub(crate) fn fixup_syntax(node: &SyntaxNode) -> SyntaxFixups { ]); } }, + ast::WhileExpr(it) => { + if it.condition().is_none() { + // insert placeholder token after the while token + let while_token = match it.while_token() { + Some(t) => t, + None => continue, + }; + append.insert(while_token.into(), vec![ + SyntheticToken { + kind: SyntaxKind::IDENT, + text: "__ra_fixup".into(), + range: end_range, + id: EMPTY_ID, + }, + ]); + } + if it.loop_body().is_none() { + append.insert(node.clone().into(), vec![ + SyntheticToken { + kind: SyntaxKind::L_CURLY, + text: "{".into(), + range: end_range, + id: EMPTY_ID, + }, + SyntheticToken { + kind: SyntaxKind::R_CURLY, + text: "}".into(), + range: end_range, + id: EMPTY_ID, + }, + ]); + } + }, + ast::LoopExpr(it) => { + if it.loop_body().is_none() { + append.insert(node.clone().into(), vec![ + SyntheticToken { + kind: SyntaxKind::L_CURLY, + text: "{".into(), + range: end_range, + id: EMPTY_ID, + }, + SyntheticToken { + kind: SyntaxKind::R_CURLY, + text: "}".into(), + range: end_range, + id: EMPTY_ID, + }, + ]); + } + }, // FIXME: foo:: - // FIXME: for, loop, match etc. + ast::MatchExpr(it) => { + if it.expr().is_none() { + let match_token = match it.match_token() { + Some(t) => t, + None => continue + }; + append.insert(match_token.into(), vec![ + SyntheticToken { + kind: SyntaxKind::IDENT, + text: "__ra_fixup".into(), + range: end_range, + id: EMPTY_ID + }, + ]); + } + if it.match_arm_list().is_none() { + // No match arms + append.insert(node.clone().into(), vec![ + SyntheticToken { + kind: SyntaxKind::L_CURLY, + text: "{".into(), + range: end_range, + id: EMPTY_ID, + }, + SyntheticToken { + kind: SyntaxKind::R_CURLY, + text: "}".into(), + range: end_range, + id: EMPTY_ID, + }, + ]); + } + }, + ast::ForExpr(it) => { + let for_token = match it.for_token() { + Some(token) => token, + None => continue + }; + + let [pat, in_token, iter] = [ + (SyntaxKind::UNDERSCORE, "_"), + (SyntaxKind::IN_KW, "in"), + (SyntaxKind::IDENT, "__ra_fixup") + ].map(|(kind, text)| SyntheticToken { kind, text: text.into(), range: end_range, id: EMPTY_ID}); + + if it.pat().is_none() && it.in_token().is_none() && it.iterable().is_none() { + append.insert(for_token.into(), vec![pat, in_token, iter]); + // does something funky -- see test case for_no_pat + } else if it.pat().is_none() { + append.insert(for_token.into(), vec![pat]); + } + + if it.loop_body().is_none() { + append.insert(node.clone().into(), vec![ + SyntheticToken { + kind: SyntaxKind::L_CURLY, + text: "{".into(), + range: end_range, + id: EMPTY_ID, + }, + SyntheticToken { + kind: SyntaxKind::R_CURLY, + text: "}".into(), + range: end_range, + id: EMPTY_ID, + }, + ]); + } + }, _ => (), } } @@ -237,6 +355,111 @@ mod tests { } #[test] + fn just_for_token() { + check( + r#" +fn foo() { + for +} +"#, + expect![[r#" +fn foo () {for _ in __ra_fixup {}} +"#]], + ) + } + + #[test] + fn for_no_iter_pattern() { + check( + r#" +fn foo() { + for {} +} +"#, + expect![[r#" +fn foo () {for _ in __ra_fixup {}} +"#]], + ) + } + + #[test] + fn for_no_body() { + check( + r#" +fn foo() { + for bar in qux +} +"#, + expect![[r#" +fn foo () {for bar in qux {}} +"#]], + ) + } + + // FIXME: https://github.com/rust-lang/rust-analyzer/pull/12937#discussion_r937633695 + #[test] + fn for_no_pat() { + check( + r#" +fn foo() { + for in qux { + + } +} +"#, + expect![[r#" +fn foo () {__ra_fixup} +"#]], + ) + } + + #[test] + fn match_no_expr_no_arms() { + check( + r#" +fn foo() { + match +} +"#, + expect![[r#" +fn foo () {match __ra_fixup {}} +"#]], + ) + } + + #[test] + fn match_expr_no_arms() { + check( + r#" +fn foo() { + match x { + + } +} +"#, + expect![[r#" +fn foo () {match x {}} +"#]], + ) + } + + #[test] + fn match_no_expr() { + check( + r#" +fn foo() { + match { + _ => {} + } +} +"#, + expect![[r#" +fn foo () {match __ra_fixup {}} +"#]], + ) + } + + #[test] fn incomplete_field_expr_1() { check( r#" @@ -245,7 +468,7 @@ fn foo() { } "#, expect![[r#" -fn foo () {a . __ra_fixup} +fn foo () {a .__ra_fixup} "#]], ) } @@ -255,11 +478,11 @@ fn foo () {a . __ra_fixup} check( r#" fn foo() { - a. ; + a.; } "#, expect![[r#" -fn foo () {a . __ra_fixup ;} +fn foo () {a .__ra_fixup ;} "#]], ) } @@ -269,12 +492,12 @@ fn foo () {a . __ra_fixup ;} check( r#" fn foo() { - a. ; + a.; bar(); } "#, expect![[r#" -fn foo () {a . __ra_fixup ; bar () ;} +fn foo () {a .__ra_fixup ; bar () ;} "#]], ) } @@ -302,7 +525,7 @@ fn foo() { } "#, expect![[r#" -fn foo () {let x = a . __ra_fixup ;} +fn foo () {let x = a .__ra_fixup ;} "#]], ) } @@ -318,7 +541,7 @@ fn foo() { } "#, expect![[r#" -fn foo () {a . b ; bar () ;} +fn foo () {a .b ; bar () ;} "#]], ) } @@ -379,4 +602,59 @@ fn foo () {if {} {}} "#]], ) } + + #[test] + fn fixup_while_1() { + check( + r#" +fn foo() { + while +} +"#, + expect![[r#" +fn foo () {while __ra_fixup {}} +"#]], + ) + } + + #[test] + fn fixup_while_2() { + check( + r#" +fn foo() { + while foo +} +"#, + expect![[r#" +fn foo () {while foo {}} +"#]], + ) + } + #[test] + fn fixup_while_3() { + check( + r#" +fn foo() { + while {} +} +"#, + expect![[r#" +fn foo () {while __ra_fixup {}} +"#]], + ) + } + + #[test] + fn fixup_loop() { + check( + r#" +fn foo() { + loop +} +"#, + expect![[r#" +fn foo () {loop {}} +"#]], + ) + } } diff --git a/src/tools/rust-analyzer/crates/hir-expand/src/lib.rs b/src/tools/rust-analyzer/crates/hir-expand/src/lib.rs index 252293090..fc128102f 100644 --- a/src/tools/rust-analyzer/crates/hir-expand/src/lib.rs +++ b/src/tools/rust-analyzer/crates/hir-expand/src/lib.rs @@ -130,7 +130,6 @@ pub struct MacroDefId { pub enum MacroDefKind { Declarative(AstId<ast::Macro>), BuiltIn(BuiltinFnLikeExpander, AstId<ast::Macro>), - // FIXME: maybe just Builtin and rename BuiltinFnLikeExpander to BuiltinExpander BuiltInAttr(BuiltinAttrExpander, AstId<ast::Macro>), BuiltInDerive(BuiltinDeriveExpander, AstId<ast::Macro>), BuiltInEager(EagerExpander, AstId<ast::Macro>), @@ -617,7 +616,7 @@ impl ExpansionInfo { let token_id = match token_id_in_attr_input { Some(token_id) => token_id, - // the token is not inside an attribute's input so do the lookup in the macro_arg as ususal + // the token is not inside an attribute's input so do the lookup in the macro_arg as usual None => { let relative_range = token.value.text_range().checked_sub(self.arg.value.text_range().start())?; @@ -970,7 +969,7 @@ impl ExpandTo { if parent.kind() == MACRO_EXPR && parent .parent() - .map_or(true, |p| matches!(p.kind(), EXPR_STMT | STMT_LIST | MACRO_STMTS)) + .map_or(false, |p| matches!(p.kind(), EXPR_STMT | STMT_LIST | MACRO_STMTS)) { return ExpandTo::Statements; } diff --git a/src/tools/rust-analyzer/crates/hir-expand/src/mod_path.rs b/src/tools/rust-analyzer/crates/hir-expand/src/mod_path.rs index fea09521e..d7586d129 100644 --- a/src/tools/rust-analyzer/crates/hir-expand/src/mod_path.rs +++ b/src/tools/rust-analyzer/crates/hir-expand/src/mod_path.rs @@ -22,7 +22,7 @@ pub struct ModPath { } #[derive(Debug, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)] -pub struct EscapedModPath<'a>(&'a ModPath); +pub struct UnescapedModPath<'a>(&'a ModPath); #[derive(Debug, Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)] pub enum PathKind { @@ -102,8 +102,8 @@ impl ModPath { } } - pub fn escaped(&self) -> EscapedModPath<'_> { - EscapedModPath(self) + pub fn unescaped(&self) -> UnescapedModPath<'_> { + UnescapedModPath(self) } fn _fmt(&self, f: &mut fmt::Formatter<'_>, escaped: bool) -> fmt::Result { @@ -134,9 +134,9 @@ impl ModPath { } first_segment = false; if escaped { - segment.escaped().fmt(f)? - } else { segment.fmt(f)? + } else { + segment.unescaped().fmt(f)? }; } Ok(()) @@ -145,13 +145,13 @@ impl ModPath { impl Display for ModPath { fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { - self._fmt(f, false) + self._fmt(f, true) } } -impl<'a> Display for EscapedModPath<'a> { +impl<'a> Display for UnescapedModPath<'a> { fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { - self.0._fmt(f, true) + self.0._fmt(f, false) } } @@ -257,6 +257,7 @@ macro_rules! __known_path { (core::ops::RangeToInclusive) => {}; (core::ops::RangeInclusive) => {}; (core::future::Future) => {}; + (core::future::IntoFuture) => {}; (core::ops::Try) => {}; ($path:path) => { compile_error!("Please register your known path in the path module") diff --git a/src/tools/rust-analyzer/crates/hir-expand/src/name.rs b/src/tools/rust-analyzer/crates/hir-expand/src/name.rs index 85b0a7735..4ce21a579 100644 --- a/src/tools/rust-analyzer/crates/hir-expand/src/name.rs +++ b/src/tools/rust-analyzer/crates/hir-expand/src/name.rs @@ -7,12 +7,16 @@ use syntax::{ast, SmolStr, SyntaxKind}; /// `Name` is a wrapper around string, which is used in hir for both references /// and declarations. In theory, names should also carry hygiene info, but we are /// not there yet! +/// +/// Note that `Name` holds and prints escaped name i.e. prefixed with "r#" when it +/// is a raw identifier. Use [`unescaped()`][Name::unescaped] when you need the +/// name without "r#". #[derive(Debug, Clone, PartialEq, Eq, Hash, PartialOrd, Ord)] pub struct Name(Repr); -/// `EscapedName` will add a prefix "r#" to the wrapped `Name` when it is a raw identifier +/// Wrapper of `Name` to print the name without "r#" even when it is a raw identifier. #[derive(Debug, Clone, PartialEq, Eq, Hash, PartialOrd, Ord)] -pub struct EscapedName<'a>(&'a Name); +pub struct UnescapedName<'a>(&'a Name); #[derive(Debug, Clone, PartialEq, Eq, Hash, PartialOrd, Ord)] enum Repr { @@ -34,37 +38,26 @@ fn is_raw_identifier(name: &str) -> bool { is_keyword && !matches!(name, "self" | "crate" | "super" | "Self") } -impl<'a> fmt::Display for EscapedName<'a> { +impl<'a> fmt::Display for UnescapedName<'a> { fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { match &self.0 .0 { Repr::Text(text) => { - if is_raw_identifier(text) { - write!(f, "r#{}", &text) - } else { - fmt::Display::fmt(&text, f) - } + let text = text.strip_prefix("r#").unwrap_or(text); + fmt::Display::fmt(&text, f) } Repr::TupleField(idx) => fmt::Display::fmt(&idx, f), } } } -impl<'a> EscapedName<'a> { - pub fn is_escaped(&self) -> bool { - match &self.0 .0 { - Repr::Text(it) => is_raw_identifier(&it), - Repr::TupleField(_) => false, - } - } - - /// Returns the textual representation of this name as a [`SmolStr`]. - /// Prefer using this over [`ToString::to_string`] if possible as this conversion is cheaper in - /// the general case. +impl<'a> UnescapedName<'a> { + /// Returns the textual representation of this name as a [`SmolStr`]. Prefer using this over + /// [`ToString::to_string`] if possible as this conversion is cheaper in the general case. pub fn to_smol_str(&self) -> SmolStr { match &self.0 .0 { Repr::Text(it) => { - if is_raw_identifier(&it) { - SmolStr::from_iter(["r#", &it]) + if let Some(stripped) = it.strip_prefix("r#") { + SmolStr::new(stripped) } else { it.clone() } @@ -98,8 +91,16 @@ impl Name { /// Resolve a name from the text of token. fn resolve(raw_text: &str) -> Name { match raw_text.strip_prefix("r#") { - Some(text) => Name::new_text(SmolStr::new(text)), - None => Name::new_text(raw_text.into()), + // When `raw_text` starts with "r#" but the name does not coincide with any + // keyword, we never need the prefix so we strip it. + Some(text) if !is_raw_identifier(text) => Name::new_text(SmolStr::new(text)), + // Keywords (in the current edition) *can* be used as a name in earlier editions of + // Rust, e.g. "try" in Rust 2015. Even in such cases, we keep track of them in their + // escaped form. + None if is_raw_identifier(raw_text) => { + Name::new_text(SmolStr::from_iter(["r#", raw_text])) + } + _ => Name::new_text(raw_text.into()), } } @@ -142,8 +143,15 @@ impl Name { } } - pub fn escaped(&self) -> EscapedName<'_> { - EscapedName(self) + pub fn unescaped(&self) -> UnescapedName<'_> { + UnescapedName(self) + } + + pub fn is_escaped(&self) -> bool { + match &self.0 { + Repr::Text(it) => it.starts_with("r#"), + Repr::TupleField(_) => false, + } } } @@ -258,6 +266,7 @@ pub mod known { Try, Ok, Future, + IntoFuture, Result, Option, Output, @@ -327,6 +336,7 @@ pub mod known { test, test_case, recursion_limit, + feature, // Safe intrinsics abort, add_with_overflow, @@ -381,6 +391,7 @@ pub mod known { bitor, bitxor_assign, bitxor, + branch, deref_mut, deref, div_assign, @@ -390,12 +401,14 @@ pub mod known { future_trait, index, index_mut, + into_future, mul_assign, mul, neg, not, owned_box, partial_ord, + poll, r#fn, rem_assign, rem, diff --git a/src/tools/rust-analyzer/crates/hir-expand/src/quote.rs b/src/tools/rust-analyzer/crates/hir-expand/src/quote.rs index 82f410ecd..e839e97bf 100644 --- a/src/tools/rust-analyzer/crates/hir-expand/src/quote.rs +++ b/src/tools/rust-analyzer/crates/hir-expand/src/quote.rs @@ -196,8 +196,8 @@ impl_to_to_tokentrees! { tt::Literal => self { self }; tt::Ident => self { self }; tt::Punct => self { self }; - &str => self { tt::Literal{text: format!("\"{}\"", self.escape_debug()).into(), id: tt::TokenId::unspecified()}}; - String => self { tt::Literal{text: format!("\"{}\"", self.escape_debug()).into(), id: tt::TokenId::unspecified()}} + &str => self { tt::Literal{text: format!("\"{}\"", self.escape_default()).into(), id: tt::TokenId::unspecified()}}; + String => self { tt::Literal{text: format!("\"{}\"", self.escape_default()).into(), id: tt::TokenId::unspecified()}} } #[cfg(test)] |