Before submitting, please make sure that you're not running into one of these known issues:
- 1. extension doesn't load in VSCodium: #11080
- 2. on-the-fly diagnostics are mostly unimplemented (`cargo check` diagnostics will be shown when saving a file): #3107
+ 1. on-the-fly diagnostics are mostly unimplemented (`cargo check` diagnostics will be shown when saving a file): #3107
Otherwise please try to provide information which will help us to fix the issue faster. Minimal reproducible examples with few dependencies are especially lovely <3.
-->
name: Critical Nightly Regression
about: You are using nightly rust-analyzer and the latest version is unusable.
title: ''
-labels: ''
-assignees: 'matklad'
+labels: 'Broken Window'
+assignees: ''
---
-->
This is a serious regression in nightly and it's important to fix it before the next release.
-@matklad, please take a look.
- name: Publish Extension (OpenVSX, release)
if: github.ref == 'refs/heads/release' && (github.repository == 'rust-analyzer/rust-analyzer' || github.repository == 'rust-lang/rust-analyzer')
working-directory: ./editors/code
- # token from https://dev.azure.com/rust-analyzer/
- run: npx ovsx publish --pat ${{ secrets.OPENVSX_TOKEN }} --packagePath ../../dist/rust-analyzer-*.vsix || true
+ run: npx ovsx publish --pat ${{ secrets.OPENVSX_TOKEN }} --packagePath ../../dist/rust-analyzer-*.vsix
timeout-minutes: 2
- name: Publish Extension (Code Marketplace, nightly)
- name: Publish Extension (OpenVSX, nightly)
if: github.ref != 'refs/heads/release' && (github.repository == 'rust-analyzer/rust-analyzer' || github.repository == 'rust-lang/rust-analyzer')
working-directory: ./editors/code
- run: npx ovsx publish --pat ${{ secrets.OPENVSX_TOKEN }} --packagePath ../../dist/rust-analyzer-*.vsix || true
+ run: npx ovsx publish --pat ${{ secrets.OPENVSX_TOKEN }} --packagePath ../../dist/rust-analyzer-*.vsix
timeout-minutes: 2
print_type_ref(elem, buf)?;
write!(buf, "]")?;
}
- TypeRef::Fn(args_and_ret, varargs) => {
+ TypeRef::Fn(args_and_ret, varargs, is_unsafe) => {
let ((_, return_type), args) =
args_and_ret.split_last().expect("TypeRef::Fn is missing return type");
+ if *is_unsafe {
+ write!(buf, "unsafe ")?;
+ }
write!(buf, "fn(")?;
for (i, (_, typeref)) in args.iter().enumerate() {
if i != 0 {
Array(Box<TypeRef>, ConstScalarOrPath),
Slice(Box<TypeRef>),
/// A fn pointer. Last element of the vector is the return type.
- Fn(Vec<(Option<Name>, TypeRef)>, bool /*varargs*/),
+ Fn(Vec<(Option<Name>, TypeRef)>, bool /*varargs*/, bool /*is_unsafe*/),
ImplTrait(Vec<Interned<TypeBound>>),
DynTrait(Vec<Interned<TypeBound>>),
Macro(AstId<ast::MacroCall>),
Vec::new()
};
params.push((None, ret_ty));
- TypeRef::Fn(params, is_varargs)
+ TypeRef::Fn(params, is_varargs, inner.unsafe_token().is_some())
}
// for types are close enough for our purposes to the inner type for now...
ast::Type::ForType(inner) => TypeRef::from_ast_opt(ctx, inner.ty()),
fn go(type_ref: &TypeRef, f: &mut impl FnMut(&TypeRef)) {
f(type_ref);
match type_ref {
- TypeRef::Fn(params, _) => {
+ TypeRef::Fn(params, _, _) => {
params.iter().for_each(|(_, param_type)| go(param_type, f))
}
TypeRef::Tuple(types) => types.iter().for_each(|t| go(t, f)),
inner.hir_fmt(f)?;
write!(f, "]")?;
}
- TypeRef::Fn(parameters, is_varargs) => {
+ &TypeRef::Fn(ref parameters, is_varargs, is_unsafe) => {
// FIXME: Function pointer qualifiers.
+ if is_unsafe {
+ write!(f, "unsafe ")?;
+ }
write!(f, "fn(")?;
if let Some(((_, return_type), function_parameters)) = parameters.split_last() {
for index in 0..function_parameters.len() {
write!(f, ", ")?;
}
}
- if *is_varargs {
+ if is_varargs {
write!(f, "{}...", if parameters.len() == 1 { "" } else { ", " })?;
}
write!(f, ")")?;
/// The primary use case is where the expected type is a fat pointer,
/// like `&[isize]`. For example, consider the following statement:
///
- /// let x: &[isize] = &[1, 2, 3];
+ /// let x: &[isize] = &[1, 2, 3];
///
/// In this case, the expected type for the `&[1, 2, 3]` expression is
/// `&[isize]`. If however we were to say that `[1, 2, 3]` has the
let ty = match &self.body[tgt_expr] {
Expr::Missing => self.err_ty(),
&Expr::If { condition, then_branch, else_branch } => {
+ let expected = &expected.adjust_for_branches(&mut self.table);
self.infer_expr(
condition,
&Expectation::has_type(TyKind::Scalar(Scalar::Bool).intern(Interner)),
use chalk_ir::{
fold::{Shift, TypeFoldable},
interner::HasInterner,
- NoSolution,
+ NoSolution, UniverseIndex,
};
use hir_def::{expr::ExprId, type_ref::Rawness, TypeOrConstParamId};
+use hir_expand::name;
use itertools::Either;
+use traits::FnTrait;
use utils::Generics;
use crate::{consteval::unknown_const, db::HirDatabase, utils::generics};
pub struct CallableSig {
params_and_return: Arc<[Ty]>,
is_varargs: bool,
+ safety: Safety,
}
has_interner!(CallableSig);
pub type PolyFnSig = Binders<CallableSig>;
impl CallableSig {
- pub fn from_params_and_return(mut params: Vec<Ty>, ret: Ty, is_varargs: bool) -> CallableSig {
+ pub fn from_params_and_return(
+ mut params: Vec<Ty>,
+ ret: Ty,
+ is_varargs: bool,
+ safety: Safety,
+ ) -> CallableSig {
params.push(ret);
- CallableSig { params_and_return: params.into(), is_varargs }
+ CallableSig { params_and_return: params.into(), is_varargs, safety }
}
pub fn from_fn_ptr(fn_ptr: &FnPointer) -> CallableSig {
.map(|arg| arg.assert_ty_ref(Interner).clone())
.collect(),
is_varargs: fn_ptr.sig.variadic,
+ safety: fn_ptr.sig.safety,
}
}
pub fn to_fn_ptr(&self) -> FnPointer {
FnPointer {
num_binders: 0,
- sig: FnSig { abi: (), safety: Safety::Safe, variadic: self.is_varargs },
+ sig: FnSig { abi: (), safety: self.safety, variadic: self.is_varargs },
substitution: FnSubst(Substitution::from_iter(
Interner,
self.params_and_return.iter().cloned(),
) -> Result<Self, E> {
let vec = self.params_and_return.to_vec();
let folded = vec.try_fold_with(folder, outer_binder)?;
- Ok(CallableSig { params_and_return: folded.into(), is_varargs: self.is_varargs })
+ Ok(CallableSig {
+ params_and_return: folded.into(),
+ is_varargs: self.is_varargs,
+ safety: self.safety,
+ })
}
}
});
Canonical { value, binders: chalk_ir::CanonicalVarKinds::from_iter(Interner, kinds) }
}
+
+pub fn callable_sig_from_fnonce(
+ self_ty: &Canonical<Ty>,
+ env: Arc<TraitEnvironment>,
+ db: &dyn HirDatabase,
+) -> Option<CallableSig> {
+ let krate = env.krate;
+ let fn_once_trait = FnTrait::FnOnce.get_id(db, krate)?;
+ let output_assoc_type = db.trait_data(fn_once_trait).associated_type_by_name(&name![Output])?;
+
+ let mut kinds = self_ty.binders.interned().to_vec();
+ let b = TyBuilder::trait_ref(db, fn_once_trait);
+ if b.remaining() != 2 {
+ return None;
+ }
+ let fn_once = b
+ .push(self_ty.value.clone())
+ .fill_with_bound_vars(DebruijnIndex::INNERMOST, kinds.len())
+ .build();
+ kinds.extend(fn_once.substitution.iter(Interner).skip(1).map(|x| {
+ let vk = match x.data(Interner) {
+ chalk_ir::GenericArgData::Ty(_) => {
+ chalk_ir::VariableKind::Ty(chalk_ir::TyVariableKind::General)
+ }
+ chalk_ir::GenericArgData::Lifetime(_) => chalk_ir::VariableKind::Lifetime,
+ chalk_ir::GenericArgData::Const(c) => {
+ chalk_ir::VariableKind::Const(c.data(Interner).ty.clone())
+ }
+ };
+ chalk_ir::WithKind::new(vk, UniverseIndex::ROOT)
+ }));
+
+ // FIXME: chalk refuses to solve `<Self as FnOnce<^0.0>>::Output == ^0.1`, so we first solve
+ // `<Self as FnOnce<^0.0>>` and then replace `^0.0` with the concrete argument tuple.
+ let trait_env = env.env.clone();
+ let obligation = InEnvironment { goal: fn_once.cast(Interner), environment: trait_env };
+ let canonical =
+ Canonical { binders: CanonicalVarKinds::from_iter(Interner, kinds), value: obligation };
+ let subst = match db.trait_solve(krate, canonical) {
+ Some(Solution::Unique(vars)) => vars.value.subst,
+ _ => return None,
+ };
+ let args = subst.at(Interner, self_ty.binders.interned().len()).ty(Interner)?;
+ let params = match args.kind(Interner) {
+ chalk_ir::TyKind::Tuple(_, subst) => {
+ subst.iter(Interner).filter_map(|arg| arg.ty(Interner).cloned()).collect::<Vec<_>>()
+ }
+ _ => return None,
+ };
+ if params.iter().any(|ty| ty.is_unknown()) {
+ return None;
+ }
+
+ let fn_once = TyBuilder::trait_ref(db, fn_once_trait)
+ .push(self_ty.value.clone())
+ .push(args.clone())
+ .build();
+ let projection =
+ TyBuilder::assoc_type_projection(db, output_assoc_type, Some(fn_once.substitution.clone()))
+ .build();
+
+ let ret_ty = db.normalize_projection(projection, env);
+
+ Some(CallableSig::from_params_and_return(params, ret_ty.clone(), false, Safety::Safe))
+}
.intern(Interner)
}
TypeRef::Placeholder => TyKind::Error.intern(Interner),
- TypeRef::Fn(params, is_varargs) => {
+ &TypeRef::Fn(ref params, variadic, is_unsafe) => {
let substs = self.with_shifted_in(DebruijnIndex::ONE, |ctx| {
Substitution::from_iter(Interner, params.iter().map(|(_, tr)| ctx.lower_ty(tr)))
});
TyKind::Function(FnPointer {
num_binders: 0, // FIXME lower `for<'a> fn()` correctly
- sig: FnSig { abi: (), safety: Safety::Safe, variadic: *is_varargs },
+ sig: FnSig {
+ abi: (),
+ safety: if is_unsafe { Safety::Unsafe } else { Safety::Safe },
+ variadic,
+ },
substitution: FnSubst(substs),
})
.intern(Interner)
.with_type_param_mode(ParamLoweringMode::Variable);
let ret = ctx_ret.lower_ty(&data.ret_type);
let generics = generics(db.upcast(), def.into());
- let sig = CallableSig::from_params_and_return(params, ret, data.is_varargs());
+ let sig = CallableSig::from_params_and_return(
+ params,
+ ret,
+ data.is_varargs(),
+ if data.has_unsafe_kw() { Safety::Unsafe } else { Safety::Safe },
+ );
make_binders(db, &generics, sig)
}
TyLoweringContext::new(db, &resolver).with_type_param_mode(ParamLoweringMode::Variable);
let params = fields.iter().map(|(_, field)| ctx.lower_ty(&field.type_ref)).collect::<Vec<_>>();
let (ret, binders) = type_for_adt(db, def.into()).into_value_and_skipped_binders();
- Binders::new(binders, CallableSig::from_params_and_return(params, ret, false))
+ Binders::new(binders, CallableSig::from_params_and_return(params, ret, false, Safety::Safe))
}
/// Build the type of a tuple struct constructor.
TyLoweringContext::new(db, &resolver).with_type_param_mode(ParamLoweringMode::Variable);
let params = fields.iter().map(|(_, field)| ctx.lower_ty(&field.type_ref)).collect::<Vec<_>>();
let (ret, binders) = type_for_adt(db, def.parent.into()).into_value_and_skipped_binders();
- Binders::new(binders, CallableSig::from_params_and_return(params, ret, false))
+ Binders::new(binders, CallableSig::from_params_and_return(params, ret, false, Safety::Safe))
}
/// Build the type of a tuple enum variant constructor.
)
}
+#[test]
+fn if_else_adjust_for_branches_discard_type_var() {
+ check_no_mismatches(
+ r#"
+fn test() {
+ let f = || {
+ if true {
+ &""
+ } else {
+ ""
+ }
+ };
+}
+"#,
+ );
+}
+
#[test]
fn match_first_coerce() {
check_no_mismatches(
);
}
+#[test]
+fn match_adjust_for_branches_discard_type_var() {
+ check_no_mismatches(
+ r#"
+fn test() {
+ let f = || {
+ match 0i32 {
+ 0i32 => &"",
+ _ => "",
+ }
+ };
+}
+"#,
+ );
+}
+
#[test]
fn return_coerce_unknown() {
check_types(
let f: fn(u32) -> isize = foo;
// ^^^ adjustments: Pointer(ReifyFnPointer)
let f: unsafe fn(u32) -> isize = foo;
- // ^^^ adjustments: Pointer(ReifyFnPointer)
+ // ^^^ adjustments: Pointer(ReifyFnPointer), Pointer(UnsafeFnPointer)
}",
);
}
check_no_mismatches(
r"
fn test() {
- let f: fn(u32) -> isize = |x| { 1 };
+ let f: fn(u32) -> u32 = |x| x;
+ // ^^^^^ adjustments: Pointer(ClosureFnPointer(Safe))
+ let f: unsafe fn(u32) -> u32 = |x| x;
+ // ^^^^^ adjustments: Pointer(ClosureFnPointer(Unsafe))
}",
);
}
let callee = match self.ty.kind(Interner) {
TyKind::Closure(id, _) => Callee::Closure(*id),
TyKind::Function(_) => Callee::FnPtr,
- _ => Callee::Def(self.ty.callable_def(db)?),
+ TyKind::FnDef(..) => Callee::Def(self.ty.callable_def(db)?),
+ _ => {
+ let ty = hir_ty::replace_errors_with_variables(&self.ty);
+ let sig = hir_ty::callable_sig_from_fnonce(&ty, self.env.clone(), db)?;
+ return Some(Callable {
+ ty: self.clone(),
+ sig,
+ callee: Callee::Other,
+ is_bound_method: false,
+ });
+ }
};
let sig = self.ty.callable_sig(db)?;
Def(CallableDefId),
Closure(ClosureId),
FnPtr,
+ Other,
}
pub enum CallableKind {
TupleEnumVariant(Variant),
Closure,
FnPtr,
+ /// Some other type that implements `FnOnce`.
+ Other,
}
impl Callable {
Def(CallableDefId::EnumVariantId(it)) => CallableKind::TupleEnumVariant(it.into()),
Closure(_) => CallableKind::Closure,
FnPtr => CallableKind::FnPtr,
+ Other => CallableKind::Other,
}
}
pub fn receiver_param(&self, db: &dyn HirDatabase) -> Option<ast::SelfParam> {
pub allowed: Option<Vec<AssistKind>>,
pub insert_use: InsertUseConfig,
pub prefer_no_std: bool,
+ pub assist_emit_must_use: bool,
}
let inferred_type = ty.display_source_code(ctx.db(), module.into()).ok()?;
acc.add(
AssistId("add_explicit_type", AssistKind::RefactorRewrite),
- format!("Insert explicit type `{}`", inferred_type),
+ format!("Insert explicit type `{inferred_type}`"),
pat_range,
|builder| match ascribed_ty {
Some(ascribed_ty) => {
builder.replace(ascribed_ty.syntax().text_range(), inferred_type);
}
None => {
- builder.insert(pat_range.end(), format!(": {}", inferred_type));
+ builder.insert(pat_range.end(), format!(": {inferred_type}"));
}
},
)
match builder_edit_pos {
InsertOrReplace::Insert(insert_pos, needs_whitespace) => {
let preceeding_whitespace = if needs_whitespace { " " } else { "" };
- builder.insert(insert_pos, &format!("{}-> {} ", preceeding_whitespace, ty))
+ builder.insert(insert_pos, &format!("{preceeding_whitespace}-> {ty} "))
}
InsertOrReplace::Replace(text_range) => {
- builder.replace(text_range, &format!("-> {}", ty))
+ builder.replace(text_range, &format!("-> {ty}"))
}
}
if let FnType::Closure { wrap_expr: true } = fn_type {
cov_mark::hit!(wrap_closure_non_block_expr);
// `|x| x` becomes `|x| -> T x` which is invalid, so wrap it in a block
- builder.replace(tail_expr.syntax().text_range(), &format!("{{{}}}", tail_expr));
+ builder.replace(tail_expr.syntax().text_range(), &format!("{{{tail_expr}}}"));
}
},
)
builder.trigger_signature_help();
match ctx.config.snippet_cap {
Some(cap) => {
- let snip = format!("::<{}>", get_snippet_fish_head(number_of_arguments));
+ let fish_head = get_snippet_fish_head(number_of_arguments);
+ let snip = format!("::<{fish_head}>");
builder.insert_snippet(cap, ident.text_range().end(), snip)
}
None => {
let fish_head = std::iter::repeat("_").take(number_of_arguments).format(", ");
- let snip = format!("::<{}>", fish_head);
+ let snip = format!("::<{fish_head}>");
builder.insert(ident.text_range().end(), snip);
}
}
/// This will create a snippet string with tabstops marked
fn get_snippet_fish_head(number_of_arguments: usize) -> String {
let mut fish_head = (1..number_of_arguments)
- .format_with("", |i, f| f(&format_args!("${{{}:_}}, ", i)))
+ .format_with("", |i, f| f(&format_args!("${{{i}:_}}, ")))
.to_string();
// tabstop 0 is a special case and always the last one
let lhs_range = lhs.syntax().text_range();
let not_lhs = invert_boolean_expression(lhs);
- edit.replace(lhs_range, format!("!({}", not_lhs.syntax().text()));
+ edit.replace(lhs_range, format!("!({not_lhs}"));
}
if let Some(rhs) = terms.pop_back() {
let rhs_range = rhs.syntax().text_range();
let not_rhs = invert_boolean_expression(rhs);
- edit.replace(rhs_range, format!("{})", not_rhs.syntax().text()));
+ edit.replace(rhs_range, format!("{not_rhs})"));
}
for term in terms {
let term_range = term.syntax().text_range();
let not_term = invert_boolean_expression(term);
- edit.replace(term_range, not_term.syntax().text());
+ edit.replace(term_range, not_term.to_string());
}
}
},
.sort_by_key(|import| Reverse(relevance_score(ctx, import, current_module.as_ref())));
for import in proposed_imports {
+ let import_path = import.import_path;
+
acc.add_group(
&group_label,
AssistId("auto_import", AssistKind::QuickFix),
- format!("Import `{}`", import.import_path),
+ format!("Import `{import_path}`"),
range,
|builder| {
let scope = match scope.clone() {
ImportScope::Module(it) => ImportScope::Module(builder.make_mut(it)),
ImportScope::Block(it) => ImportScope::Block(builder.make_mut(it)),
};
- insert_use(&scope, mod_path_to_ast(&import.import_path), &ctx.config.insert_use);
+ insert_use(&scope, mod_path_to_ast(&import_path), &ctx.config.insert_use);
},
);
}
let indent_spaces = indentation.to_string();
let output = lines
- .map(|l| l.trim_start_matches(&indent_spaces))
- .map(|l| {
+ .map(|line| {
+ let line = line.trim_start_matches(&indent_spaces);
+
// Don't introduce trailing whitespace
- if l.is_empty() {
+ if line.is_empty() {
line_prefix.to_string()
} else {
- format!("{} {}", line_prefix, l.trim_start_matches(&indent_spaces))
+ format!("{line_prefix} {line}")
}
})
- .join(&format!("\n{}", indent_spaces));
+ .join(&format!("\n{indent_spaces}"));
edit.replace(target, output)
},
let block_prefix =
CommentKind { shape: CommentShape::Block, ..comment.kind() }.prefix();
- let output = format!("{}\n{}\n{}*/", block_prefix, block_comment_body, indentation);
+ let output = format!("{block_prefix}\n{block_comment_body}\n{indentation}*/");
edit.replace(target, output)
},
}
let mut converted = match target_radix {
- Radix::Binary => format!("0b{:b}", value),
- Radix::Octal => format!("0o{:o}", value),
+ Radix::Binary => format!("0b{value:b}"),
+ Radix::Octal => format!("0o{value:o}"),
Radix::Decimal => value.to_string(),
- Radix::Hexadecimal => format!("0x{:X}", value),
+ Radix::Hexadecimal => format!("0x{value:X}"),
};
- let label = format!("Convert {} to {}{}", literal, converted, suffix.unwrap_or_default());
-
// Appends the type suffix back into the new literal if it exists.
if let Some(suffix) = suffix {
converted.push_str(suffix);
}
+ let label = format!("Convert {literal} to {converted}");
+
acc.add_group(
&group_id,
AssistId("convert_integer_literal", AssistKind::RefactorInline),
impl_.syntax().text_range(),
|builder| {
builder.replace(src_type.syntax().text_range(), dest_type.to_string());
- builder.replace(ast_trait.syntax().text_range(), format!("From<{}>", src_type));
+ builder.replace(ast_trait.syntax().text_range(), format!("From<{src_type}>"));
builder.replace(into_fn_return.syntax().text_range(), "-> Self");
- builder.replace(into_fn_params.syntax().text_range(), format!("(val: {})", src_type));
+ builder.replace(into_fn_params.syntax().text_range(), format!("(val: {src_type})"));
builder.replace(into_fn_name.syntax().text_range(), "from");
for s in selfs {
{
// We have either "for x in &col" and col implements a method called iter
// or "for x in &mut col" and col implements a method called iter_mut
- format_to!(buf, "{}.{}()", expr_behind_ref, method);
+ format_to!(buf, "{expr_behind_ref}.{method}()");
} else if let ast::Expr::RangeExpr(..) = iterable {
// range expressions need to be parenthesized for the syntax to be correct
- format_to!(buf, "({})", iterable);
+ format_to!(buf, "({iterable})");
} else if impls_core_iter(&ctx.sema, &iterable) {
- format_to!(buf, "{}", iterable);
+ format_to!(buf, "{iterable}");
} else if let ast::Expr::RefExpr(_) = iterable {
- format_to!(buf, "({}).into_iter()", iterable);
+ format_to!(buf, "({iterable}).into_iter()");
} else {
- format_to!(buf, "{}.into_iter()", iterable);
+ format_to!(buf, "{iterable}.into_iter()");
}
- format_to!(buf, ".for_each(|{}| {});", pat, body);
+ format_to!(buf, ".for_each(|{pat}| {body});");
builder.replace(for_loop.syntax().text_range(), buf)
},
.map(
|(ident, ismut)| {
if *ismut && addmut {
- format!("mut {}", ident)
+ format!("mut {ident}")
} else {
ident.to_string()
}
} else if binders.len() == 1 {
vars
} else {
- format!("({})", vars)
+ format!("({vars})")
}
}
let only_expr = let_else_block.statements().next().is_none();
let branch2 = match &let_else_block.tail_expr() {
- Some(tail) if only_expr => format!("{},", tail.syntax().text()),
+ Some(tail) if only_expr => format!("{tail},"),
_ => let_else_block.syntax().text().to_string(),
};
let replace = if binders.is_empty() {
--- /dev/null
+use ide_db::defs::{Definition, NameRefClass};
+use syntax::{
+ ast::{self, HasName},
+ ted, AstNode, SyntaxNode,
+};
+
+use crate::{
+ assist_context::{AssistContext, Assists},
+ AssistId, AssistKind,
+};
+
+// Assist: convert_match_to_let_else
+//
+// Converts let statement with match initializer to let-else statement.
+//
+// ```
+// # //- minicore: option
+// fn foo(opt: Option<()>) {
+// let val = $0match opt {
+// Some(it) => it,
+// None => return,
+// };
+// }
+// ```
+// ->
+// ```
+// fn foo(opt: Option<()>) {
+// let Some(val) = opt else { return };
+// }
+// ```
+pub(crate) fn convert_match_to_let_else(acc: &mut Assists, ctx: &AssistContext<'_>) -> Option<()> {
+ let let_stmt: ast::LetStmt = ctx.find_node_at_offset()?;
+ let binding = find_binding(let_stmt.pat()?)?;
+
+ let initializer = match let_stmt.initializer() {
+ Some(ast::Expr::MatchExpr(it)) => it,
+ _ => return None,
+ };
+ let initializer_expr = initializer.expr()?;
+
+ let (extracting_arm, diverging_arm) = match find_arms(ctx, &initializer) {
+ Some(it) => it,
+ None => return None,
+ };
+ if extracting_arm.guard().is_some() {
+ cov_mark::hit!(extracting_arm_has_guard);
+ return None;
+ }
+
+ let diverging_arm_expr = diverging_arm.expr()?;
+ let extracting_arm_pat = extracting_arm.pat()?;
+ let extracted_variable = find_extracted_variable(ctx, &extracting_arm)?;
+
+ acc.add(
+ AssistId("convert_match_to_let_else", AssistKind::RefactorRewrite),
+ "Convert match to let-else",
+ let_stmt.syntax().text_range(),
+ |builder| {
+ let extracting_arm_pat = rename_variable(&extracting_arm_pat, extracted_variable, binding);
+ builder.replace(
+ let_stmt.syntax().text_range(),
+ format!("let {extracting_arm_pat} = {initializer_expr} else {{ {diverging_arm_expr} }};")
+ )
+ },
+ )
+}
+
+// Given a pattern, find the name introduced to the surrounding scope.
+fn find_binding(pat: ast::Pat) -> Option<ast::IdentPat> {
+ if let ast::Pat::IdentPat(ident) = pat {
+ Some(ident)
+ } else {
+ None
+ }
+}
+
+// Given a match expression, find extracting and diverging arms.
+fn find_arms(
+ ctx: &AssistContext<'_>,
+ match_expr: &ast::MatchExpr,
+) -> Option<(ast::MatchArm, ast::MatchArm)> {
+ let arms = match_expr.match_arm_list()?.arms().collect::<Vec<_>>();
+ if arms.len() != 2 {
+ return None;
+ }
+
+ let mut extracting = None;
+ let mut diverging = None;
+ for arm in arms {
+ if ctx.sema.type_of_expr(&arm.expr().unwrap()).unwrap().original().is_never() {
+ diverging = Some(arm);
+ } else {
+ extracting = Some(arm);
+ }
+ }
+
+ match (extracting, diverging) {
+ (Some(extracting), Some(diverging)) => Some((extracting, diverging)),
+ _ => {
+ cov_mark::hit!(non_diverging_match);
+ None
+ }
+ }
+}
+
+// Given an extracting arm, find the extracted variable.
+fn find_extracted_variable(ctx: &AssistContext<'_>, arm: &ast::MatchArm) -> Option<ast::Name> {
+ match arm.expr()? {
+ ast::Expr::PathExpr(path) => {
+ let name_ref = path.syntax().descendants().find_map(ast::NameRef::cast)?;
+ match NameRefClass::classify(&ctx.sema, &name_ref)? {
+ NameRefClass::Definition(Definition::Local(local)) => {
+ let source = local.source(ctx.db()).value.left()?;
+ Some(source.name()?)
+ }
+ _ => None,
+ }
+ }
+ _ => {
+ cov_mark::hit!(extracting_arm_is_not_an_identity_expr);
+ return None;
+ }
+ }
+}
+
+// Rename `extracted` with `binding` in `pat`.
+fn rename_variable(pat: &ast::Pat, extracted: ast::Name, binding: ast::IdentPat) -> SyntaxNode {
+ let syntax = pat.syntax().clone_for_update();
+ let extracted_syntax = syntax.covering_element(extracted.syntax().text_range());
+
+ // If `extracted` variable is a record field, we should rename it to `binding`,
+ // otherwise we just need to replace `extracted` with `binding`.
+
+ if let Some(record_pat_field) = extracted_syntax.ancestors().find_map(ast::RecordPatField::cast)
+ {
+ if let Some(name_ref) = record_pat_field.field_name() {
+ ted::replace(
+ record_pat_field.syntax(),
+ ast::make::record_pat_field(ast::make::name_ref(&name_ref.text()), binding.into())
+ .syntax()
+ .clone_for_update(),
+ );
+ }
+ } else {
+ ted::replace(extracted_syntax, binding.syntax().clone_for_update());
+ }
+
+ syntax
+}
+
+#[cfg(test)]
+mod tests {
+ use crate::tests::{check_assist, check_assist_not_applicable};
+
+ use super::*;
+
+ #[test]
+ fn should_not_be_applicable_for_non_diverging_match() {
+ cov_mark::check!(non_diverging_match);
+ check_assist_not_applicable(
+ convert_match_to_let_else,
+ r#"
+//- minicore: option
+fn foo(opt: Option<()>) {
+ let val = $0match opt {
+ Some(it) => it,
+ None => (),
+ };
+}
+"#,
+ );
+ }
+
+ #[test]
+ fn should_not_be_applicable_if_extracting_arm_is_not_an_identity_expr() {
+ cov_mark::check_count!(extracting_arm_is_not_an_identity_expr, 2);
+ check_assist_not_applicable(
+ convert_match_to_let_else,
+ r#"
+//- minicore: option
+fn foo(opt: Option<i32>) {
+ let val = $0match opt {
+ Some(it) => it + 1,
+ None => return,
+ };
+}
+"#,
+ );
+
+ check_assist_not_applicable(
+ convert_match_to_let_else,
+ r#"
+//- minicore: option
+fn foo(opt: Option<()>) {
+ let val = $0match opt {
+ Some(it) => {
+ let _ = 1 + 1;
+ it
+ },
+ None => return,
+ };
+}
+"#,
+ );
+ }
+
+ #[test]
+ fn should_not_be_applicable_if_extracting_arm_has_guard() {
+ cov_mark::check!(extracting_arm_has_guard);
+ check_assist_not_applicable(
+ convert_match_to_let_else,
+ r#"
+//- minicore: option
+fn foo(opt: Option<()>) {
+ let val = $0match opt {
+ Some(it) if 2 > 1 => it,
+ None => return,
+ };
+}
+"#,
+ );
+ }
+
+ #[test]
+ fn basic_pattern() {
+ check_assist(
+ convert_match_to_let_else,
+ r#"
+//- minicore: option
+fn foo(opt: Option<()>) {
+ let val = $0match opt {
+ Some(it) => it,
+ None => return,
+ };
+}
+ "#,
+ r#"
+fn foo(opt: Option<()>) {
+ let Some(val) = opt else { return };
+}
+ "#,
+ );
+ }
+
+ #[test]
+ fn keeps_modifiers() {
+ check_assist(
+ convert_match_to_let_else,
+ r#"
+//- minicore: option
+fn foo(opt: Option<()>) {
+ let ref mut val = $0match opt {
+ Some(it) => it,
+ None => return,
+ };
+}
+ "#,
+ r#"
+fn foo(opt: Option<()>) {
+ let Some(ref mut val) = opt else { return };
+}
+ "#,
+ );
+ }
+
+ #[test]
+ fn nested_pattern() {
+ check_assist(
+ convert_match_to_let_else,
+ r#"
+//- minicore: option, result
+fn foo(opt: Option<Result<()>>) {
+ let val = $0match opt {
+ Some(Ok(it)) => it,
+ _ => return,
+ };
+}
+ "#,
+ r#"
+fn foo(opt: Option<Result<()>>) {
+ let Some(Ok(val)) = opt else { return };
+}
+ "#,
+ );
+ }
+
+ #[test]
+ fn works_with_any_diverging_block() {
+ check_assist(
+ convert_match_to_let_else,
+ r#"
+//- minicore: option
+fn foo(opt: Option<()>) {
+ loop {
+ let val = $0match opt {
+ Some(it) => it,
+ None => break,
+ };
+ }
+}
+ "#,
+ r#"
+fn foo(opt: Option<()>) {
+ loop {
+ let Some(val) = opt else { break };
+ }
+}
+ "#,
+ );
+
+ check_assist(
+ convert_match_to_let_else,
+ r#"
+//- minicore: option
+fn foo(opt: Option<()>) {
+ loop {
+ let val = $0match opt {
+ Some(it) => it,
+ None => continue,
+ };
+ }
+}
+ "#,
+ r#"
+fn foo(opt: Option<()>) {
+ loop {
+ let Some(val) = opt else { continue };
+ }
+}
+ "#,
+ );
+
+ check_assist(
+ convert_match_to_let_else,
+ r#"
+//- minicore: option
+fn panic() -> ! {}
+
+fn foo(opt: Option<()>) {
+ loop {
+ let val = $0match opt {
+ Some(it) => it,
+ None => panic(),
+ };
+ }
+}
+ "#,
+ r#"
+fn panic() -> ! {}
+
+fn foo(opt: Option<()>) {
+ loop {
+ let Some(val) = opt else { panic() };
+ }
+}
+ "#,
+ );
+ }
+
+ #[test]
+ fn struct_pattern() {
+ check_assist(
+ convert_match_to_let_else,
+ r#"
+//- minicore: option
+struct Point {
+ x: i32,
+ y: i32,
+}
+
+fn foo(opt: Option<Point>) {
+ let val = $0match opt {
+ Some(Point { x: 0, y }) => y,
+ _ => return,
+ };
+}
+ "#,
+ r#"
+struct Point {
+ x: i32,
+ y: i32,
+}
+
+fn foo(opt: Option<Point>) {
+ let Some(Point { x: 0, y: val }) = opt else { return };
+}
+ "#,
+ );
+ }
+
+ #[test]
+ fn renames_whole_binding() {
+ check_assist(
+ convert_match_to_let_else,
+ r#"
+//- minicore: option
+fn foo(opt: Option<i32>) -> Option<i32> {
+ let val = $0match opt {
+ it @ Some(42) => it,
+ _ => return None,
+ };
+ val
+}
+ "#,
+ r#"
+fn foo(opt: Option<i32>) -> Option<i32> {
+ let val @ Some(42) = opt else { return None };
+ val
+}
+ "#,
+ );
+ }
+}
}
Some((path, bound_ident)) => {
// If-let.
- let match_expr = {
- let happy_arm = {
- let pat = make::tuple_struct_pat(
- path,
- once(make::ext::simple_ident_pat(make::name("it")).into()),
- );
- let expr = {
- let path = make::ext::ident_path("it");
- make::expr_path(path)
- };
- make::match_arm(once(pat.into()), None, expr)
- };
-
- let sad_arm = make::match_arm(
- // FIXME: would be cool to use `None` or `Err(_)` if appropriate
- once(make::wildcard_pat().into()),
- None,
- early_expression,
- );
-
- make::expr_match(cond_expr, make::match_arm_list(vec![happy_arm, sad_arm]))
- };
-
- let let_stmt = make::let_stmt(bound_ident, None, Some(match_expr));
- let let_stmt = let_stmt.indent(if_indent_level);
- let_stmt.syntax().clone_for_update()
+ let pat = make::tuple_struct_pat(path, once(bound_ident));
+ let let_else_stmt = make::let_else_stmt(
+ pat.into(),
+ None,
+ cond_expr,
+ ast::make::tail_only_block_expr(early_expression),
+ );
+ let let_else_stmt = let_else_stmt.indent(if_indent_level);
+ let_else_stmt.syntax().clone_for_update()
}
};
r#"
fn main(n: Option<String>) {
bar();
- let n = match n {
- Some(it) => it,
- _ => return,
- };
+ let Some(n) = n else { return };
foo(n);
// comment
"#,
r#"
fn main() {
- let x = match Err(92) {
- Ok(it) => it,
- _ => return,
- };
+ let Ok(x) = Err(92) else { return };
foo(x);
}
"#,
r#"
fn main(n: Option<String>) {
bar();
- let n = match n {
- Some(it) => it,
- _ => return,
- };
+ let Some(n) = n else { return };
foo(n);
// comment
r#"
fn main(n: Option<String>) {
bar();
- let mut n = match n {
- Some(it) => it,
- _ => return,
- };
+ let Some(mut n) = n else { return };
foo(n);
// comment
r#"
fn main(n: Option<&str>) {
bar();
- let ref n = match n {
- Some(it) => it,
- _ => return,
- };
+ let Some(ref n) = n else { return };
foo(n);
// comment
r#"
fn main() {
while true {
- let n = match n {
- Some(it) => it,
- _ => continue,
- };
+ let Some(n) = n else { continue };
foo(n);
bar();
}
r#"
fn main() {
loop {
- let n = match n {
- Some(it) => it,
- _ => continue,
- };
+ let Some(n) = n else { continue };
foo(n);
bar();
}
}
fn generate_names(fields: impl Iterator<Item = ast::TupleField>) -> Vec<ast::Name> {
- fields.enumerate().map(|(i, _)| ast::make::name(&format!("field{}", i + 1))).collect()
+ fields
+ .enumerate()
+ .map(|(i, _)| {
+ let idx = i + 1;
+ ast::make::name(&format!("field{idx}"))
+ })
+ .collect()
}
#[cfg(test)]
target_range,
|builder| {
let mut arm_str = String::new();
- if let Some(ref pat) = first_arm.pat() {
+ if let Some(pat) = &first_arm.pat() {
arm_str += &pat.to_string();
}
- if let Some(ref guard) = first_arm.guard() {
- arm_str += &format!(" {}", &guard.to_string());
+ if let Some(guard) = &first_arm.guard() {
+ arm_str += &format!(" {guard}");
}
if invert_matches {
- builder.replace(target_range, format!("!matches!({}, {})", expr, arm_str));
+ builder.replace(target_range, format!("!matches!({expr}, {arm_str})"));
} else {
- builder.replace(target_range, format!("matches!({}, {})", expr, arm_str));
+ builder.replace(target_range, format!("matches!({expr}, {arm_str})"));
}
},
)
_usages: &Option<UsageSearchResult>,
) -> String {
// FIXME: detect if name already used
- format!("_{}", index)
+ format!("_{index}")
}
enum RefType {
let add_cursor = |text: &str| {
// place cursor on first tuple item
let first_tuple = &data.field_names[0];
- text.replacen(first_tuple, &format!("$0{}", first_tuple), 1)
+ text.replacen(first_tuple, &format!("$0{first_tuple}"), 1)
};
// with sub_pattern: keep original tuple and add subpattern: `tup @ (_0, _1)`
if in_sub_pattern {
- let text = format!(" @ {}", tuple_pat);
+ let text = format!(" @ {tuple_pat}");
match ctx.config.snippet_cap {
Some(cap) => {
let snip = add_cursor(&text);
impl RefData {
fn format(&self, field_name: &str) -> String {
match (self.needs_deref, self.needs_parentheses) {
- (true, true) => format!("(*{})", field_name),
- (true, false) => format!("*{}", field_name),
- (false, true) => format!("({})", field_name),
+ (true, true) => format!("(*{field_name})"),
+ (true, false) => format!("*{field_name}"),
+ (false, true) => format!("({field_name})"),
(false, false) => field_name.to_string(),
}
}
let mut counter = 0;
while names_in_scope.contains(&name) {
counter += 1;
- name = format!("{}{}", &default_name, counter)
+ name = format!("{default_name}{counter}")
}
make::name_ref(&name)
}
match fun.outliving_locals.as_slice() {
[] => {}
[var] => {
- format_to!(buf, "let {}{} = ", mut_modifier(var), var.local.name(ctx.db()))
+ let modifier = mut_modifier(var);
+ let name = var.local.name(ctx.db());
+ format_to!(buf, "let {modifier}{name} = ")
}
vars => {
buf.push_str("let (");
let bindings = vars.iter().format_with(", ", |local, f| {
- f(&format_args!("{}{}", mut_modifier(local), local.local.name(ctx.db())))
+ let modifier = mut_modifier(local);
+ let name = local.local.name(ctx.db());
+ f(&format_args!("{modifier}{name}"))
});
- format_to!(buf, "{}", bindings);
+ format_to!(buf, "{bindings}");
buf.push_str(") = ");
}
}
- format_to!(buf, "{}", expr);
+ format_to!(buf, "{expr}");
let insert_comma = fun
.body
.parent()
new_indent: IndentLevel,
) -> String {
let mut fn_def = String::new();
+
+ let fun_name = &fun.name;
let params = fun.make_param_list(ctx, module);
let ret_ty = fun.make_ret_ty(ctx, module);
let body = make_body(ctx, old_indent, new_indent, fun);
let async_kw = if fun.control_flow.is_async { "async " } else { "" };
let unsafe_kw = if fun.control_flow.is_unsafe { "unsafe " } else { "" };
let (generic_params, where_clause) = make_generic_params_and_where_clause(ctx, fun);
+
+ format_to!(fn_def, "\n\n{new_indent}{const_kw}{async_kw}{unsafe_kw}");
match ctx.config.snippet_cap {
- Some(_) => format_to!(
- fn_def,
- "\n\n{}{}{}{}fn $0{}",
- new_indent,
- const_kw,
- async_kw,
- unsafe_kw,
- fun.name,
- ),
- None => format_to!(
- fn_def,
- "\n\n{}{}{}{}fn {}",
- new_indent,
- const_kw,
- async_kw,
- unsafe_kw,
- fun.name,
- ),
+ Some(_) => format_to!(fn_def, "fn $0{fun_name}"),
+ None => format_to!(fn_def, "fn {fun_name}"),
}
if let Some(generic_params) = generic_params {
- format_to!(fn_def, "{}", generic_params);
+ format_to!(fn_def, "{generic_params}");
}
- format_to!(fn_def, "{}", params);
+ format_to!(fn_def, "{params}");
if let Some(ret_ty) = ret_ty {
- format_to!(fn_def, " {}", ret_ty);
+ format_to!(fn_def, " {ret_ty}");
}
if let Some(where_clause) = where_clause {
- format_to!(fn_def, " {}", where_clause);
+ format_to!(fn_def, " {where_clause}");
}
- format_to!(fn_def, " {}", body);
+ format_to!(fn_def, " {body}");
fn_def
}
for item in items_to_be_processed {
let item = item.indent(IndentLevel(1));
let mut indented_item = String::new();
- format_to!(indented_item, "{}{}", new_item_indent, item.to_string());
+ format_to!(indented_item, "{new_item_indent}{item}");
body_items.push(indented_item);
}
let mut impl_body_def = String::new();
if let Some(self_ty) = impl_.self_ty() {
- format_to!(
- impl_body_def,
- "{}impl {} {{\n{}\n{}}}",
- old_item_indent + 1,
- self_ty.to_string(),
- body,
- old_item_indent + 1
- );
-
+ {
+ let impl_indent = old_item_indent + 1;
+ format_to!(
+ impl_body_def,
+ "{impl_indent}impl {self_ty} {{\n{body}\n{impl_indent}}}",
+ );
+ }
body = impl_body_def;
// Add the import for enum/struct corresponding to given impl block
module.make_use_stmt_of_node_with_super(self_ty.syntax());
for item in module.use_items {
- let mut indented_item = String::new();
- format_to!(indented_item, "{}{}", old_item_indent + 1, item.to_string());
- body = format!("{}\n\n{}", indented_item, body);
+ let item_indent = old_item_indent + 1;
+ body = format!("{item_indent}{item}\n\n{body}");
}
}
}
let mut module_def = String::new();
- format_to!(module_def, "mod {} {{\n{}\n{}}}", module.name, body, old_item_indent);
+ let module_name = module.name;
+ format_to!(module_def, "mod {module_name} {{\n{body}\n{old_item_indent}}}");
let mut usages_to_be_updated_for_curr_file = vec![];
for usages_to_be_updated_for_file in usages_to_be_processed {
builder.delete(range);
}
- builder.insert(impl_.syntax().text_range().end(), format!("\n\n{}", module_def));
+ builder.insert(impl_.syntax().text_range().end(), format!("\n\n{module_def}"));
} else {
builder.replace(module.text_range, module_def)
}
&& !self.text_range.contains_range(desc.text_range())
{
if let Some(name_ref) = ast::NameRef::cast(desc) {
+ let mod_name = self.name;
return Some((
name_ref.syntax().text_range(),
- format!("{}::{}", self.name, name_ref),
+ format!("{mod_name}::{name_ref}"),
));
}
}
fn update_variant(variant: &ast::Variant, generics: Option<ast::GenericParamList>) -> Option<()> {
let name = variant.name()?;
- let ty = generics
+ let generic_args = generics
.filter(|generics| generics.generic_params().count() > 0)
- .map(|generics| make::ty(&format!("{}{}", &name.text(), generics.to_generic_args())))
- .unwrap_or_else(|| make::ty(&name.text()));
+ .map(|generics| generics.to_generic_args());
+ // FIXME: replace with a `ast::make` constructor
+ let ty = match generic_args {
+ Some(generic_args) => make::ty(&format!("{name}{generic_args}")),
+ None => make::ty(&name.text()),
+ };
// change from a record to a tuple field list
let tuple_field = make::tuple_field(None, ty);
use either::Either;
use ide_db::syntax_helpers::node_ext::walk_ty;
-use itertools::Itertools;
use syntax::{
- ast::{self, edit::IndentLevel, AstNode, HasGenericParams, HasName},
+ ast::{self, edit::IndentLevel, make, AstNode, HasGenericParams, HasName},
match_ast,
};
known_generics.extend(it.generic_params());
}
let generics = collect_used_generics(&ty, &known_generics);
+ let generic_params =
+ generics.map(|it| make::generic_param_list(it.into_iter().cloned()));
- let replacement = if !generics.is_empty() {
- format!(
- "Type<{}>",
- generics.iter().format_with(", ", |generic, f| {
- match generic {
- ast::GenericParam::ConstParam(cp) => f(&cp.name().unwrap()),
- ast::GenericParam::LifetimeParam(lp) => f(&lp.lifetime().unwrap()),
- ast::GenericParam::TypeParam(tp) => f(&tp.name().unwrap()),
- }
- })
- )
- } else {
- String::from("Type")
- };
+ let ty_args = generic_params
+ .as_ref()
+ .map_or(String::new(), |it| it.to_generic_args().to_string());
+ let replacement = format!("Type{ty_args}");
builder.replace(target, replacement);
let indent = IndentLevel::from_node(node);
- let generics = if !generics.is_empty() {
- format!("<{}>", generics.iter().format(", "))
- } else {
- String::new()
- };
+ let generic_params = generic_params.map_or(String::new(), |it| it.to_string());
match ctx.config.snippet_cap {
Some(cap) => {
builder.insert_snippet(
cap,
insert_pos,
- format!("type $0Type{} = {};\n\n{}", generics, ty, indent),
+ format!("type $0Type{generic_params} = {ty};\n\n{indent}"),
);
}
None => {
builder.insert(
insert_pos,
- format!("type Type{} = {};\n\n{}", generics, ty, indent),
+ format!("type Type{generic_params} = {ty};\n\n{indent}"),
);
}
}
fn collect_used_generics<'gp>(
ty: &ast::Type,
known_generics: &'gp [ast::GenericParam],
-) -> Vec<&'gp ast::GenericParam> {
+) -> Option<Vec<&'gp ast::GenericParam>> {
// can't use a closure -> closure here cause lifetime inference fails for that
fn find_lifetime(text: &str) -> impl Fn(&&ast::GenericParam) -> bool + '_ {
move |gp: &&ast::GenericParam| match gp {
ast::GenericParam::LifetimeParam(_) => 0,
ast::GenericParam::TypeParam(_) => 1,
});
- generics
+
+ Some(generics).filter(|it| it.len() > 0)
}
#[cfg(test)]
match anchor {
Anchor::Before(_) | Anchor::Replace(_) => {
- format_to!(buf, "let {}{} = {}", var_modifier, var_name, reference_modifier)
+ format_to!(buf, "let {var_modifier}{var_name} = {reference_modifier}")
}
Anchor::WrapInBlock(_) => {
- format_to!(buf, "{{ let {} = {}", var_name, reference_modifier)
+ format_to!(buf, "{{ let {var_name} = {reference_modifier}")
}
};
- format_to!(buf, "{}", to_extract.syntax());
+ format_to!(buf, "{to_extract}");
if let Anchor::Replace(stmt) = anchor {
cov_mark::hit!(test_extract_var_expr_stmt);
match ctx.config.snippet_cap {
Some(cap) => {
let snip = buf.replace(
- &format!("let {}{}", var_modifier, var_name),
- &format!("let {}$0{}", var_modifier, var_name),
+ &format!("let {var_modifier}{var_name}"),
+ &format!("let {var_modifier}$0{var_name}"),
);
edit.replace_snippet(cap, expr_range, snip)
}
match ctx.config.snippet_cap {
Some(cap) => {
let snip = buf.replace(
- &format!("let {}{}", var_modifier, var_name),
- &format!("let {}$0{}", var_modifier, var_name),
+ &format!("let {var_modifier}{var_name}"),
+ &format!("let {var_modifier}$0{var_name}"),
);
edit.insert_snippet(cap, offset, snip)
}
if current_module.krate() == target_module.krate() { "pub(crate)" } else { "pub" };
let assist_label = match target_name {
- None => format!("Change visibility to {}", missing_visibility),
- Some(name) => format!("Change visibility of {} to {}", name, missing_visibility),
+ None => format!("Change visibility to {missing_visibility}"),
+ Some(name) => format!("Change visibility of {name} to {missing_visibility}"),
};
acc.add(AssistId("fix_visibility", AssistKind::QuickFix), assist_label, target, |builder| {
Some(current_visibility) => builder.replace_snippet(
cap,
current_visibility.syntax().text_range(),
- format!("$0{}", missing_visibility),
+ format!("$0{missing_visibility}"),
),
- None => builder.insert_snippet(cap, offset, format!("$0{} ", missing_visibility)),
+ None => builder.insert_snippet(cap, offset, format!("$0{missing_visibility} ")),
},
None => match current_visibility {
Some(current_visibility) => {
builder.replace(current_visibility.syntax().text_range(), missing_visibility)
}
- None => builder.insert(offset, format!("{} ", missing_visibility)),
+ None => builder.insert(offset, format!("{missing_visibility} ")),
},
}
})
let target_name = record_field_def.name(ctx.db());
let assist_label =
- format!("Change visibility of {}.{} to {}", parent_name, target_name, missing_visibility);
+ format!("Change visibility of {parent_name}.{target_name} to {missing_visibility}");
acc.add(AssistId("fix_visibility", AssistKind::QuickFix), assist_label, target, |builder| {
builder.edit_file(target_file);
Some(current_visibility) => builder.replace_snippet(
cap,
current_visibility.syntax().text_range(),
- format!("$0{}", missing_visibility),
+ format!("$0{missing_visibility}"),
),
- None => builder.insert_snippet(cap, offset, format!("$0{} ", missing_visibility)),
+ None => builder.insert_snippet(cap, offset, format!("$0{missing_visibility} ")),
},
None => match current_visibility {
Some(current_visibility) => {
builder.replace(current_visibility.syntax().text_range(), missing_visibility)
}
- None => builder.insert(offset, format!("{} ", missing_visibility)),
+ None => builder.insert(offset, format!("{missing_visibility} ")),
},
}
})
happy_case,
sad_case,
} = props;
+
let variant = ctx.find_node_at_offset::<ast::Variant>()?;
let variant_name = variant.name()?;
let parent_enum = ast::Adt::Enum(variant.parent_enum());
ast::StructKind::Unit => return None,
};
- let fn_name = format!("{}_{}", fn_name_prefix, &to_lower_snake_case(&variant_name.text()));
+ let fn_name = format!("{fn_name_prefix}_{}", &to_lower_snake_case(&variant_name.text()));
// Return early if we've found an existing new fn
let impl_def = find_struct_impl(ctx, &parent_enum, &[fn_name.clone()])?;
assist_description,
target,
|builder| {
- let vis = parent_enum.visibility().map_or(String::new(), |v| format!("{v} "));
+ let vis = parent_enum.visibility().map_or(String::new(), |v| format!("{} ", v));
+
+ let field_type_syntax = field_type.syntax();
+
+ let must_use = if ctx.config.assist_emit_must_use {
+ "#[must_use]\n "
+ } else {
+ ""
+ };
+
let method = format!(
- " {vis}fn {fn_name}({self_param}) -> {return_prefix}{field_type}{return_suffix} {{
+ " {must_use}{vis}fn {fn_name}({self_param}) -> {return_prefix}{field_type_syntax}{return_suffix} {{
if let Self::{variant_name}{pattern_suffix} = self {{
{happy_case}({bound_name})
}} else {{
{sad_case}
}}
- }}");
+ }}"
+ );
add_method_to_adt(builder, &parent_enum, impl_def, &method);
},
+use std::collections::BTreeSet;
+
use ast::make;
use either::Either;
use hir::{db::HirDatabase, PathResolution, Semantics, TypeInfo};
PathResolution::Def(hir::ModuleDef::Function(f)) => f,
_ => return None,
};
- (function, format!("Inline `{}`", path))
+ (function, format!("Inline `{path}`"))
}
ast::CallableExpr::MethodCall(call) => {
- (ctx.sema.resolve_method_call(call)?, format!("Inline `{}`", name_ref))
+ (ctx.sema.resolve_method_call(call)?, format!("Inline `{name_ref}`"))
}
};
})
}
}
+
+ let mut func_let_vars: BTreeSet<String> = BTreeSet::new();
+
+ // grab all of the local variable declarations in the function
+ for stmt in fn_body.statements() {
+ if let Some(let_stmt) = ast::LetStmt::cast(stmt.syntax().to_owned()) {
+ for has_token in let_stmt.syntax().children_with_tokens() {
+ if let Some(node) = has_token.as_node() {
+ if let Some(ident_pat) = ast::IdentPat::cast(node.to_owned()) {
+ func_let_vars.insert(ident_pat.syntax().text().to_string());
+ }
+ }
+ }
+ }
+ }
+
// Inline parameter expressions or generate `let` statements depending on whether inlining works or not.
for ((pat, param_ty, _), usages, expr) in izip!(params, param_use_nodes, arguments).rev() {
+ // izip confuses RA due to our lack of hygiene info currently losing us type info causing incorrect errors
+ let usages: &[ast::PathExpr] = &*usages;
+ let expr: &ast::Expr = expr;
+
+ let insert_let_stmt = || {
+ let ty = sema.type_of_expr(expr).filter(TypeInfo::has_adjustment).and(param_ty.clone());
+ if let Some(stmt_list) = body.stmt_list() {
+ stmt_list.push_front(
+ make::let_stmt(pat.clone(), ty, Some(expr.clone())).clone_for_update().into(),
+ )
+ }
+ };
+
+ // check if there is a local var in the function that conflicts with parameter
+ // if it does then emit a let statement and continue
+ if func_let_vars.contains(&expr.syntax().text().to_string()) {
+ insert_let_stmt();
+ continue;
+ }
+
let inline_direct = |usage, replacement: &ast::Expr| {
if let Some(field) = path_expr_as_record_field(usage) {
cov_mark::hit!(inline_call_inline_direct_field);
ted::replace(usage.syntax(), &replacement.syntax().clone_for_update());
}
};
- // izip confuses RA due to our lack of hygiene info currently losing us type info causing incorrect errors
- let usages: &[ast::PathExpr] = &*usages;
- let expr: &ast::Expr = expr;
+
match usages {
// inline single use closure arguments
[usage]
}
// can't inline, emit a let statement
_ => {
- let ty =
- sema.type_of_expr(expr).filter(TypeInfo::has_adjustment).and(param_ty.clone());
- if let Some(stmt_list) = body.stmt_list() {
- stmt_list.push_front(
- make::let_stmt(pat.clone(), ty, Some(expr.clone()))
- .clone_for_update()
- .into(),
- )
- }
+ insert_let_stmt();
}
}
}
+
if let Some(generic_arg_list) = generic_arg_list.clone() {
if let Some((target, source)) = &sema.scope(node.syntax()).zip(sema.scope(fn_body.syntax()))
{
"#,
)
}
+
+ #[test]
+ fn local_variable_shadowing_callers_argument() {
+ check_assist(
+ inline_call,
+ r#"
+fn foo(bar: u32, baz: u32) -> u32 {
+ let a = 1;
+ bar * baz * a * 6
+}
+fn main() {
+ let a = 7;
+ let b = 1;
+ let res = foo$0(a, b);
+}
+"#,
+ r#"
+fn foo(bar: u32, baz: u32) -> u32 {
+ let a = 1;
+ bar * baz * a * 6
+}
+fn main() {
+ let a = 7;
+ let b = 1;
+ let res = {
+ let bar = a;
+ let a = 1;
+ bar * b * a * 6
+ };
+}
+"#,
+ );
+ }
}
.collect::<Option<Vec<_>>>()?;
let init_str = initializer_expr.syntax().text().to_string();
- let init_in_paren = format!("({})", &init_str);
+ let init_in_paren = format!("({init_str})");
let target = match target {
ast::NameOrNameRef::Name(it) => it.syntax().text_range(),
let replacement = if should_wrap { &init_in_paren } else { &init_str };
if ast::RecordExprField::for_field_name(&name).is_some() {
cov_mark::hit!(inline_field_shorthand);
- builder.insert(range.end(), format!(": {}", replacement));
+ builder.insert(range.end(), format!(": {replacement}"));
} else {
builder.replace(range, replacement.clone())
}
Some(type_params) => {
let used_lifetime_params: FxHashSet<_> =
type_params.lifetime_params().map(|p| p.syntax().text().to_string()).collect();
- ('a'..='z').map(|it| format!("'{}", it)).find(|it| !used_lifetime_params.contains(it))
+ ('a'..='z').map(|it| format!("'{it}")).find(|it| !used_lifetime_params.contains(it))
}
None => Some("'a".to_string()),
}
.join(" | ")
};
- let arm = format!("{} => {},", pats, current_expr.syntax().text());
+ let arm = format!("{pats} => {current_expr},");
if let [first, .., last] = &*arms_to_merge {
let start = first.syntax().text_range().start();
let target = source_file.syntax().text_range();
let module_name = module.name(ctx.db())?.to_string();
- let path = format!("../{}.rs", module_name);
+ let path = format!("../{module_name}.rs");
let dst = AnchoredPathBuf { anchor: ctx.file_id(), path };
acc.add(
AssistId("move_from_mod_rs", AssistKind::Refactor),
- format!("Convert {}/mod.rs to {}.rs", module_name, module_name),
+ format!("Convert {module_name}/mod.rs to {module_name}.rs"),
target,
|builder| {
builder.move_file(ctx.file_id(), dst);
};
let then_arm_end = match_arm.syntax().text_range().end();
let indent_level = match_arm.indent_level();
- let spaces = " ".repeat(indent_level.0 as _);
+ let spaces = indent_level;
let mut first = true;
for (cond, block) in conds_blocks {
if !first {
- edit.insert(then_arm_end, format!("\n{}", spaces));
+ edit.insert(then_arm_end, format!("\n{spaces}"));
} else {
first = false;
}
- let guard = format!("{} if {} => ", match_pat, cond.syntax().text());
+ let guard = format!("{match_pat} if {cond} => ");
edit.insert(then_arm_end, guard);
let only_expr = block.statements().next().is_none();
match &block.tail_expr() {
}
if let Some(e) = tail {
cov_mark::hit!(move_guard_ifelse_else_tail);
- let guard = format!("\n{}{} => ", spaces, match_pat);
+ let guard = format!("\n{spaces}{match_pat} => ");
edit.insert(then_arm_end, guard);
let only_expr = e.statements().next().is_none();
match &e.tail_expr() {
{
cov_mark::hit!(move_guard_ifelse_has_wildcard);
}
- _ => edit.insert(then_arm_end, format!("\n{}{} => {{}}", spaces, match_pat)),
+ _ => edit.insert(then_arm_end, format!("\n{spaces}{match_pat} => {{}}")),
}
}
},
let mut buf = String::from("./");
match parent_module.name(ctx.db()) {
Some(name) if !parent_module.is_mod_rs(ctx.db()) => {
- format_to!(buf, "{}/", name)
+ format_to!(buf, "{name}/")
}
_ => (),
}
items
};
- let buf = format!("mod {};", module_name);
+ let buf = format!("mod {module_name};");
let replacement_start = match module_ast.mod_token() {
Some(mod_token) => mod_token.text_range(),
let target = source_file.syntax().text_range();
let module_name = module.name(ctx.db())?.to_string();
- let path = format!("./{}/mod.rs", module_name);
+ let path = format!("./{module_name}/mod.rs");
let dst = AnchoredPathBuf { anchor: ctx.file_id(), path };
acc.add(
AssistId("move_to_mod_rs", AssistKind::Refactor),
- format!("Convert {}.rs to {}/mod.rs", module_name, module_name),
+ format!("Convert {module_name}.rs to {module_name}/mod.rs"),
target,
|builder| {
builder.move_file(ctx.file_id(), dst);
converted.push_str(suffix);
let group_id = GroupLabel("Reformat number literal".into());
- let label = format!("Convert {} to {}", literal, converted);
+ let label = format!("Convert {literal} to {converted}");
let range = literal.syntax().text_range();
acc.add_group(
&group_id,
acc.add(
AssistId("qualify_method_call", AssistKind::RefactorInline),
- format!("Qualify `{}` method call", ident.text()),
+ format!("Qualify `{ident}` method call"),
range,
|builder| {
qualify_candidate.qualify(
match self {
QualifyCandidate::QualifierStart(segment, generics) => {
let generics = generics.as_ref().map_or_else(String::new, ToString::to_string);
- replacer(format!("{}{}::{}", import, generics, segment));
+ replacer(format!("{import}{generics}::{segment}"));
}
QualifyCandidate::UnqualifiedName(generics) => {
let generics = generics.as_ref().map_or_else(String::new, ToString::to_string);
- replacer(format!("{}{}", import, generics));
+ replacer(format!("{import}{generics}"));
}
QualifyCandidate::TraitAssocItem(qualifier, segment) => {
- replacer(format!("<{} as {}>::{}", qualifier, import, segment));
+ replacer(format!("<{qualifier} as {import}>::{segment}"));
}
QualifyCandidate::TraitMethod(db, mcall_expr) => {
Self::qualify_trait_method(db, mcall_expr, replacer, import, item);
hir::Access::Exclusive => make::expr_ref(receiver, true),
hir::Access::Owned => receiver,
};
- replacer(format!(
- "{}::{}{}{}",
- import,
- method_name,
- generics,
- match arg_list {
- Some(args) => make::arg_list(iter::once(receiver).chain(args)),
- None => make::arg_list(iter::once(receiver)),
- }
- ));
+ let arg_list = match arg_list {
+ Some(args) => make::arg_list(iter::once(receiver).chain(args)),
+ None => make::arg_list(iter::once(receiver)),
+ };
+ replacer(format!("{import}::{method_name}{generics}{arg_list}"));
}
Some(())
}
}
}
.text();
- GroupLabel(format!("Qualify {}", name))
+ GroupLabel(format!("Qualify {name}"))
}
fn label(candidate: &ImportCandidate, import: &LocatedImport) -> String {
+ let import_path = &import.import_path;
+
match candidate {
ImportCandidate::Path(candidate) if candidate.qualifier.is_none() => {
- format!("Qualify as `{}`", import.import_path)
+ format!("Qualify as `{import_path}`")
}
- _ => format!("Qualify with `{}`", import.import_path),
+ _ => format!("Qualify with `{import_path}`"),
}
}
let hashes = "#".repeat(required_hashes(&value).max(1));
if matches!(value, Cow::Borrowed(_)) {
// Avoid replacing the whole string to better position the cursor.
- edit.insert(token.syntax().text_range().start(), format!("r{}", hashes));
+ edit.insert(token.syntax().text_range().start(), format!("r{hashes}"));
edit.insert(token.syntax().text_range().end(), hashes);
} else {
- edit.replace(
- token.syntax().text_range(),
- format!("r{}\"{}\"{}", hashes, value, hashes),
- );
+ edit.replace(token.syntax().text_range(), format!("r{hashes}\"{value}\"{hashes}"));
}
},
)
}
}
- edit.replace(token.syntax().text_range(), format!("\"{}\"", escaped));
+ edit.replace(token.syntax().text_range(), format!("\"{escaped}\""));
},
)
}
};
(
macro_call.syntax().text_range(),
- if wrap { format!("({})", expr) } else { expr.to_string() },
+ if wrap { format!("({expr})") } else { expr.to_string() },
)
}
// dbg!(expr0, expr1, ...)
fn check(ra_fixture_before: &str, ra_fixture_after: &str) {
check_assist(
remove_dbg,
- &format!("fn main() {{\n{}\n}}", ra_fixture_before),
- &format!("fn main() {{\n{}\n}}", ra_fixture_after),
+ &format!("fn main() {{\n{ra_fixture_before}\n}}"),
+ &format!("fn main() {{\n{ra_fixture_after}\n}}"),
);
}
) -> Option<()> {
let target = attr.syntax().text_range();
let annotated_name = adt.name()?;
- let label = format!("Convert to manual `impl {} for {}`", replace_trait_path, annotated_name);
+ let label = format!("Convert to manual `impl {replace_trait_path} for {annotated_name}`");
acc.add(
AssistId("replace_derive_with_manual_impl", AssistKind::Refactor),
}
}
- builder.insert_snippet(
- cap,
- insert_pos,
- format!("\n\n{}", render_snippet(cap, impl_def.syntax(), cursor)),
- )
+ let rendered = render_snippet(cap, impl_def.syntax(), cursor);
+ builder.insert_snippet(cap, insert_pos, format!("\n\n{rendered}"))
}
};
},
acc.add(
AssistId("replace_or_with_or_else", AssistKind::RefactorRewrite),
- format!("Replace {} with {}", name.text(), replace),
+ format!("Replace {name} with {replace}"),
call.syntax().text_range(),
|builder| {
builder.replace(name.syntax().text_range(), replace);
acc.add(
AssistId("replace_or_else_with_or", AssistKind::RefactorRewrite),
- format!("Replace {} with {}", name.text(), replace),
+ format!("Replace {name} with {replace}"),
call.syntax().text_range(),
|builder| {
builder.replace(name.syntax().text_range(), replace);
"Replace turbofish with explicit type",
TextRange::new(initializer_start, turbofish_range.end()),
|builder| {
- builder.insert(ident_range.end(), format!(": {}", returned_type));
+ builder.insert(ident_range.end(), format!(": {returned_type}"));
builder.delete(turbofish_range);
},
);
if function.body()?.syntax().descendants().find_map(ast::AwaitExpr::cast).is_some() {
return None;
}
+ // Do nothing if the method is a member of trait.
+ if let Some(impl_) = function.syntax().ancestors().nth(2).and_then(ast::Impl::cast) {
+ if let Some(_) = impl_.trait_() {
+ return None;
+ }
+ }
// Remove the `async` keyword plus whitespace after it, if any.
let async_range = {
fn does_not_apply_when_not_on_prototype() {
check_assist_not_applicable(unnecessary_async, "pub async fn f() { $0f2() }")
}
+
+ #[test]
+ fn does_not_apply_on_async_trait_method() {
+ check_assist_not_applicable(
+ unnecessary_async,
+ r#"
+trait Trait {
+ async fn foo();
+}
+impl Trait for () {
+ $0async fn foo() {}
+}"#,
+ );
+ }
}
for (pat, ty, expr) in
itertools::izip!(tuple_pat.fields(), tys.fields(), tuple_init.fields())
{
- zipped_decls.push_str(&format!("{}let {pat}: {ty} = {expr};\n", indents))
+ zipped_decls.push_str(&format!("{indents}let {pat}: {ty} = {expr};\n"))
}
edit.replace(parent.text_range(), zipped_decls.trim());
} else {
let mut zipped_decls = String::new();
for (pat, expr) in itertools::izip!(tuple_pat.fields(), tuple_init.fields()) {
- zipped_decls.push_str(&format!("{}let {pat} = {expr};\n", indents));
+ zipped_decls.push_str(&format!("{indents}let {pat} = {expr};\n"));
}
edit.replace(parent.text_range(), zipped_decls.trim());
}
match ctx.config.snippet_cap {
Some(cap) => {
- let snippet = format!("Result<{}, ${{0:_}}>", type_ref);
+ let snippet = format!("Result<{type_ref}, ${{0:_}}>");
builder.replace_snippet(cap, type_ref.syntax().text_range(), snippet)
}
None => builder
- .replace(type_ref.syntax().text_range(), format!("Result<{}, _>", type_ref)),
+ .replace(type_ref.syntax().text_range(), format!("Result<{type_ref}, _>")),
}
},
)
mod convert_into_to_from;
mod convert_iter_for_each_to_for;
mod convert_let_else_to_match;
+ mod convert_match_to_let_else;
mod convert_tuple_struct_to_named_struct;
mod convert_named_struct_to_tuple_struct;
mod convert_to_guarded_return;
convert_iter_for_each_to_for::convert_for_loop_with_for_each,
convert_let_else_to_match::convert_let_else_to_match,
convert_named_struct_to_tuple_struct::convert_named_struct_to_tuple_struct,
+ convert_match_to_let_else::convert_match_to_let_else,
convert_to_guarded_return::convert_to_guarded_return,
convert_tuple_struct_to_named_struct::convert_tuple_struct_to_named_struct,
convert_two_arm_bool_match_to_matches_macro::convert_two_arm_bool_match_to_matches_macro,
skip_glob_imports: true,
},
prefer_no_std: false,
+ assist_emit_must_use: false,
};
pub(crate) fn with_single_file(text: &str) -> (RootDatabase, FileId) {
)
}
+#[test]
+fn doctest_convert_match_to_let_else() {
+ check_doc_test(
+ "convert_match_to_let_else",
+ r#####"
+//- minicore: option
+fn foo(opt: Option<()>) {
+ let val = $0match opt {
+ Some(it) => it,
+ None => return,
+ };
+}
+"#####,
+ r#####"
+fn foo(opt: Option<()>) {
+ let Some(val) = opt else { return };
+}
+"#####,
+ )
+}
+
#[test]
fn doctest_convert_named_struct_to_tuple_struct() {
check_doc_test(
let mut placeholder = cursor.node().to_string();
escape(&mut placeholder);
let tab_stop = match cursor {
- Cursor::Replace(placeholder) => format!("${{0:{}}}", placeholder),
- Cursor::Before(placeholder) => format!("$0{}", placeholder),
+ Cursor::Replace(placeholder) => format!("${{0:{placeholder}}}"),
+ Cursor::Before(placeholder) => format!("$0{placeholder}"),
};
let mut buf = node.to_string();
ReferenceConversionType::AsRefSlice => {
let type_argument_name =
self.ty.type_arguments().next().unwrap().display(db).to_string();
- format!("&[{}]", type_argument_name)
+ format!("&[{type_argument_name}]")
}
ReferenceConversionType::Dereferenced => {
let type_argument_name =
self.ty.type_arguments().next().unwrap().display(db).to_string();
- format!("&{}", type_argument_name)
+ format!("&{type_argument_name}")
}
ReferenceConversionType::Option => {
let type_argument_name =
self.ty.type_arguments().next().unwrap().display(db).to_string();
- format!("Option<&{}>", type_argument_name)
+ format!("Option<&{type_argument_name}>")
}
ReferenceConversionType::Result => {
let mut type_arguments = self.ty.type_arguments();
type_arguments.next().unwrap().display(db).to_string();
let second_type_argument_name =
type_arguments.next().unwrap().display(db).to_string();
- format!("Result<&{}, &{}>", first_type_argument_name, second_type_argument_name)
+ format!("Result<&{first_type_argument_name}, &{second_type_argument_name}>")
}
}
}
pub(crate) fn getter(&self, field_name: String) -> String {
match self.conversion {
- ReferenceConversionType::Copy => format!("self.{}", field_name),
+ ReferenceConversionType::Copy => format!("self.{field_name}"),
ReferenceConversionType::AsRefStr
| ReferenceConversionType::AsRefSlice
| ReferenceConversionType::Dereferenced
| ReferenceConversionType::Option
- | ReferenceConversionType::Result => format!("self.{}.as_ref()", field_name),
+ | ReferenceConversionType::Result => format!("self.{field_name}.as_ref()"),
}
}
}
let mut arms = vec![];
for variant in list.variants() {
let name = variant.name()?;
- let variant_name = make::ext::path_from_idents(["Self", &format!("{}", name)])?;
+ let variant_name = make::ext::path_from_idents(["Self", &format!("{name}")])?;
match variant.field_list() {
// => match self { Self::Name { x } => Self::Name { x: x.clone() } }
let mut pats = vec![];
let mut fields = vec![];
for (i, _) in list.fields().enumerate() {
- let field_name = format!("arg{}", i);
+ let field_name = format!("arg{i}");
let pat = make::ident_pat(false, false, make::name(&field_name));
pats.push(pat.into());
let mut fields = vec![];
for (i, _) in field_list.fields().enumerate() {
let f_path = make::expr_path(make::ext::ident_path("self"));
- let target = make::expr_field(f_path, &format!("{}", i));
+ let target = make::expr_field(f_path, &format!("{i}"));
fields.push(gen_clone_call(target));
}
let struct_name = make::expr_path(make::ext::ident_path("Self"));
let mut arms = vec![];
for variant in list.variants() {
let name = variant.name()?;
- let variant_name = make::ext::path_from_idents(["Self", &format!("{}", name)])?;
+ let variant_name = make::ext::path_from_idents(["Self", &format!("{name}")])?;
let target = make::expr_path(make::ext::ident_path("f"));
match variant.field_list() {
// => f.debug_struct(name)
let target = make::expr_path(make::ext::ident_path("f"));
let method = make::name_ref("debug_struct");
- let struct_name = format!("\"{}\"", name);
+ let struct_name = format!("\"{name}\"");
let args = make::arg_list(Some(make::expr_literal(&struct_name).into()));
let mut expr = make::expr_method_call(target, method, args);
// => <expr>.field("field_name", field)
let method_name = make::name_ref("field");
- let name = make::expr_literal(&(format!("\"{}\"", field_name))).into();
- let path = &format!("{}", field_name);
+ let name = make::expr_literal(&(format!("\"{field_name}\""))).into();
+ let path = &format!("{field_name}");
let path = make::expr_path(make::ext::ident_path(path));
let args = make::arg_list(vec![name, path]);
expr = make::expr_method_call(expr, method_name, args);
// => f.debug_tuple(name)
let target = make::expr_path(make::ext::ident_path("f"));
let method = make::name_ref("debug_tuple");
- let struct_name = format!("\"{}\"", name);
+ let struct_name = format!("\"{name}\"");
let args = make::arg_list(Some(make::expr_literal(&struct_name).into()));
let mut expr = make::expr_method_call(target, method, args);
let mut pats = vec![];
for (i, _) in list.fields().enumerate() {
- let name = format!("arg{}", i);
+ let name = format!("arg{i}");
// create a field pattern for use in `MyStruct(fields..)`
let field_name = make::name(&name);
arms.push(make::match_arm(Some(pat.into()), None, expr));
}
None => {
- let fmt_string = make::expr_literal(&(format!("\"{}\"", name))).into();
+ let fmt_string = make::expr_literal(&(format!("\"{name}\""))).into();
let args = make::arg_list([target, fmt_string]);
let macro_name = make::expr_path(make::ext::ident_path("write"));
let macro_call = make::expr_macro_call(macro_name, args);
}
ast::Adt::Struct(strukt) => {
- let name = format!("\"{}\"", annotated_name);
+ let name = format!("\"{annotated_name}\"");
let args = make::arg_list(Some(make::expr_literal(&name).into()));
let target = make::expr_path(make::ext::ident_path("f"));
let mut expr = make::expr_method_call(target, method, args);
for field in field_list.fields() {
let name = field.name()?;
- let f_name = make::expr_literal(&(format!("\"{}\"", name))).into();
+ let f_name = make::expr_literal(&(format!("\"{name}\""))).into();
let f_path = make::expr_path(make::ext::ident_path("self"));
let f_path = make::expr_ref(f_path, false);
- let f_path = make::expr_field(f_path, &format!("{}", name));
+ let f_path = make::expr_field(f_path, &format!("{name}"));
let args = make::arg_list([f_name, f_path]);
expr = make::expr_method_call(expr, make::name_ref("field"), args);
}
for (i, _) in field_list.fields().enumerate() {
let f_path = make::expr_path(make::ext::ident_path("self"));
let f_path = make::expr_ref(f_path, false);
- let f_path = make::expr_field(f_path, &format!("{}", i));
+ let f_path = make::expr_field(f_path, &format!("{i}"));
let method = make::name_ref("field");
expr = make::expr_method_call(expr, method, make::arg_list(Some(f_path)));
}
let mut stmts = vec![];
for (i, _) in field_list.fields().enumerate() {
let base = make::expr_path(make::ext::ident_path("self"));
- let target = make::expr_field(base, &format!("{}", i));
+ let target = make::expr_field(base, &format!("{i}"));
stmts.push(gen_hash_call(target));
}
make::block_expr(stmts, None).indent(ast::edit::IndentLevel(1))
for field in list.fields() {
let field_name = field.name()?.to_string();
- let l_name = &format!("l_{}", field_name);
+ let l_name = &format!("l_{field_name}");
l_fields.push(gen_record_pat_field(&field_name, l_name));
- let r_name = &format!("r_{}", field_name);
+ let r_name = &format!("r_{field_name}");
r_fields.push(gen_record_pat_field(&field_name, r_name));
let lhs = make::expr_path(make::ext::ident_path(l_name));
let mut r_fields = vec![];
for (i, _) in list.fields().enumerate() {
- let field_name = format!("{}", i);
+ let field_name = format!("{i}");
- let l_name = format!("l{}", field_name);
+ let l_name = format!("l{field_name}");
l_fields.push(gen_tuple_field(&l_name));
- let r_name = format!("r{}", field_name);
+ let r_name = format!("r{field_name}");
r_fields.push(gen_tuple_field(&r_name));
let lhs = make::expr_path(make::ext::ident_path(&l_name));
Some(ast::FieldList::TupleFieldList(field_list)) => {
let mut expr = None;
for (i, _) in field_list.fields().enumerate() {
- let idx = format!("{}", i);
+ let idx = format!("{i}");
let lhs = make::expr_path(make::ext::ident_path("self"));
let lhs = make::expr_field(lhs, &idx);
let rhs = make::expr_path(make::ext::ident_path("other"));
Some(ast::FieldList::TupleFieldList(field_list)) => {
let mut exprs = vec![];
for (i, _) in field_list.fields().enumerate() {
- let idx = format!("{}", i);
+ let idx = format!("{i}");
let lhs = make::expr_path(make::ext::ident_path("self"));
let lhs = make::expr_field(lhs, &idx);
let rhs = make::expr_path(make::ext::ident_path("other"));
}
}
- if !ctx.config.snippets.is_empty() {
- add_custom_postfix_completions(acc, ctx, &postfix_snippet, &receiver_text);
- }
-
let try_enum = TryEnum::from_ty(&ctx.sema, &receiver_ty.strip_references());
if let Some(try_enum) = &try_enum {
match try_enum {
None => return,
};
+ if !ctx.config.snippets.is_empty() {
+ add_custom_postfix_completions(acc, ctx, &postfix_snippet, &receiver_text);
+ }
+
match try_enum {
Some(try_enum) => match try_enum {
TryEnum::Result => {
r#"fn main() { log::error!("{}", 2+2) }"#,
);
}
+
+ #[test]
+ fn postfix_custom_snippets_completion_for_references() {
+ check_edit_with_config(
+ CompletionConfig {
+ snippets: vec![Snippet::new(
+ &[],
+ &["ok".into()],
+ &["Ok(${receiver})".into()],
+ "",
+ &[],
+ crate::SnippetScope::Expr,
+ )
+ .unwrap()],
+ ..TEST_CONFIG
+ },
+ "ok",
+ r#"fn main() { &&42.$0 }"#,
+ r#"fn main() { Ok(&&42) }"#,
+ );
+ }
}
})
}
- // FIXME: There should be optimization potential here
- // Currently we try to descend everything we find which
- // means we call `Semantics::descend_into_macros` on
- // every textual hit. That function is notoriously
- // expensive even for things that do not get down mapped
- // into macros.
+ let find_nodes = move |name: &str, node: &syntax::SyntaxNode, offset: TextSize| {
+ node.token_at_offset(offset).find(|it| it.text() == name).map(|token| {
+ // FIXME: There should be optimization potential here
+ // Currently we try to descend everything we find which
+ // means we call `Semantics::descend_into_macros` on
+ // every textual hit. That function is notoriously
+ // expensive even for things that do not get down mapped
+ // into macros.
+ sema.descend_into_macros(token).into_iter().filter_map(|it| it.parent())
+ })
+ };
+
for (text, file_id, search_range) in scope_files(sema, &search_scope) {
let tree = Lazy::new(move || sema.parse(file_id).syntax().clone());
// Search for occurrences of the items name
for offset in match_indices(&text, finder, search_range) {
- for name in sema.find_nodes_at_offset_with_descend(&tree, offset) {
- if match name {
- ast::NameLike::NameRef(name_ref) => self.found_name_ref(&name_ref, sink),
- ast::NameLike::Name(name) => self.found_name(&name, sink),
- ast::NameLike::Lifetime(lifetime) => self.found_lifetime(&lifetime, sink),
- } {
- return;
+ if let Some(iter) = find_nodes(name, &tree, offset) {
+ for name in iter.filter_map(ast::NameLike::cast) {
+ if match name {
+ ast::NameLike::NameRef(name_ref) => {
+ self.found_name_ref(&name_ref, sink)
+ }
+ ast::NameLike::Name(name) => self.found_name(&name, sink),
+ ast::NameLike::Lifetime(lifetime) => {
+ self.found_lifetime(&lifetime, sink)
+ }
+ } {
+ return;
+ }
}
}
}
// Search for occurrences of the `Self` referring to our type
if let Some((self_ty, finder)) = &include_self_kw_refs {
for offset in match_indices(&text, finder, search_range) {
- for name_ref in sema.find_nodes_at_offset_with_descend(&tree, offset) {
- if self.found_self_ty_name_ref(self_ty, &name_ref, sink) {
- return;
+ if let Some(iter) = find_nodes("Self", &tree, offset) {
+ for name_ref in iter.filter_map(ast::NameRef::cast) {
+ if self.found_self_ty_name_ref(self_ty, &name_ref, sink) {
+ return;
+ }
}
}
}
let tree = Lazy::new(move || sema.parse(file_id).syntax().clone());
for offset in match_indices(&text, finder, search_range) {
- for name_ref in sema.find_nodes_at_offset_with_descend(&tree, offset) {
- if self.found_name_ref(&name_ref, sink) {
- return;
+ if let Some(iter) = find_nodes("super", &tree, offset) {
+ for name_ref in iter.filter_map(ast::NameRef::cast) {
+ if self.found_name_ref(&name_ref, sink) {
+ return;
+ }
}
}
}
if let Some(finder) = &is_crate_root {
for offset in match_indices(&text, finder, search_range) {
- for name_ref in sema.find_nodes_at_offset_with_descend(&tree, offset) {
- if self.found_name_ref(&name_ref, sink) {
- return;
+ if let Some(iter) = find_nodes("crate", &tree, offset) {
+ for name_ref in iter.filter_map(ast::NameRef::cast) {
+ if self.found_name_ref(&name_ref, sink) {
+ return;
+ }
}
}
}
let finder = &Finder::new("self");
for offset in match_indices(&text, finder, search_range) {
- for name_ref in sema.find_nodes_at_offset_with_descend(&tree, offset) {
- if self.found_self_module_name_ref(&name_ref, sink) {
- return;
+ if let Some(iter) = find_nodes("self", &tree, offset) {
+ for name_ref in iter.filter_map(ast::NameRef::cast) {
+ if self.found_self_module_name_ref(&name_ref, sink) {
+ return;
+ }
}
}
}
#[derive(Debug, Clone, PartialEq, Eq, Hash)]
pub struct PackageInformation {
pub name: String,
- pub repo: String,
- pub version: String,
+ pub repo: Option<String>,
+ pub version: Option<String>,
}
pub(crate) fn crate_for_file(db: &RootDatabase, file_id: FileId) -> Option<Crate> {
let (name, repo, version) = match krate.origin(db) {
CrateOrigin::CratesIo { repo, name } => (
name.unwrap_or(krate.display_name(db)?.canonical_name().to_string()),
- repo?,
- krate.version(db)?,
+ repo,
+ krate.version(db),
),
CrateOrigin::Lang(lang) => (
krate.display_name(db)?.canonical_name().to_string(),
- "https://github.com/rust-lang/rust/".to_string(),
- match lang {
+ Some("https://github.com/rust-lang/rust/".to_string()),
+ Some(match lang {
LangCrateOrigin::Other => {
"https://github.com/rust-lang/rust/library/".into()
}
lang => format!("https://github.com/rust-lang/rust/library/{lang}",),
- },
+ }),
),
};
PackageInformation { name, repo, version }
}
"#,
"foo::module::func",
- r#"PackageInformation { name: "foo", repo: "https://a.b/foo.git", version: "0.1.0" }"#,
+ r#"PackageInformation { name: "foo", repo: Some("https://a.b/foo.git"), version: Some("0.1.0") }"#,
MonikerKind::Import,
);
check_moniker(
}
"#,
"foo::module::func",
- r#"PackageInformation { name: "foo", repo: "https://a.b/foo.git", version: "0.1.0" }"#,
+ r#"PackageInformation { name: "foo", repo: Some("https://a.b/foo.git"), version: Some("0.1.0") }"#,
MonikerKind::Export,
);
}
}
"#,
"foo::module::MyTrait::func",
- r#"PackageInformation { name: "foo", repo: "https://a.b/foo.git", version: "0.1.0" }"#,
+ r#"PackageInformation { name: "foo", repo: Some("https://a.b/foo.git"), version: Some("0.1.0") }"#,
MonikerKind::Export,
);
}
}
"#,
"foo::module::MyTrait::MY_CONST",
- r#"PackageInformation { name: "foo", repo: "https://a.b/foo.git", version: "0.1.0" }"#,
+ r#"PackageInformation { name: "foo", repo: Some("https://a.b/foo.git"), version: Some("0.1.0") }"#,
MonikerKind::Export,
);
}
}
"#,
"foo::module::MyTrait::MyType",
- r#"PackageInformation { name: "foo", repo: "https://a.b/foo.git", version: "0.1.0" }"#,
+ r#"PackageInformation { name: "foo", repo: Some("https://a.b/foo.git"), version: Some("0.1.0") }"#,
MonikerKind::Export,
);
}
}
"#,
"foo::module::MyStruct::MyTrait::func",
- r#"PackageInformation { name: "foo", repo: "https://a.b/foo.git", version: "0.1.0" }"#,
+ r#"PackageInformation { name: "foo", repo: Some("https://a.b/foo.git"), version: Some("0.1.0") }"#,
MonikerKind::Export,
);
}
}
"#,
"foo::St::a",
- r#"PackageInformation { name: "foo", repo: "https://a.b/foo.git", version: "0.1.0" }"#,
+ r#"PackageInformation { name: "foo", repo: Some("https://a.b/foo.git"), version: Some("0.1.0") }"#,
MonikerKind::Import,
);
}
if def.range_for_rename(&sema).is_none() {
bail!("No references found at position")
}
- let frange = sema.original_range(name_like.syntax());
+ let Some(frange) = sema.original_range_opt(name_like.syntax()) else {
+ bail!("No references found at position");
+ };
always!(
frange.range.contains_inclusive(position.offset)
.reduce(|acc, cur| match (acc, cur) {
// ensure all ranges are the same
(Ok(acc_inner), Ok(cur_inner)) if acc_inner == cur_inner => Ok(acc_inner),
- (Err(e), _) => Err(e),
+ (e @ Err(_), _) | (_, e @ Err(_)) => e,
_ => bail!("inconsistent text range"),
});
"#,
);
}
+
+ #[test]
+ fn regression_13498() {
+ check(
+ "Testing",
+ r"
+mod foo {
+ pub struct Test$0;
+}
+
+use foo::Test as Tester;
+
+fn main() {
+ let t = Tester;
+}
+",
+ r"
+mod foo {
+ pub struct Testing;
+}
+
+use foo::Testing as Tester;
+
+fn main() {
+ let t = Tester;
+}
+",
+ )
+ }
}
variant.name(db)
);
}
- hir::CallableKind::Closure | hir::CallableKind::FnPtr => (),
+ hir::CallableKind::Closure | hir::CallableKind::FnPtr | hir::CallableKind::Other => (),
}
res.signature.push('(');
hir::CallableKind::Function(func) if callable.return_type().contains_unknown() => {
render(func.ret_type(db))
}
- hir::CallableKind::Function(_) | hir::CallableKind::Closure | hir::CallableKind::FnPtr => {
- render(callable.return_type())
- }
+ hir::CallableKind::Function(_)
+ | hir::CallableKind::Closure
+ | hir::CallableKind::FnPtr
+ | hir::CallableKind::Other => render(callable.return_type()),
hir::CallableKind::TupleStruct(_) | hir::CallableKind::TupleEnumVariant(_) => {}
}
Some(res)
}
fn check(ra_fixture: &str, expect: Expect) {
- // Implicitly add `Sized` to avoid noisy `T: ?Sized` in the results.
let fixture = format!(
r#"
-#[lang = "sized"] trait Sized {{}}
+//- minicore: sized, fn
{ra_fixture}
"#
);
"#]],
);
}
+
+ #[test]
+ fn help_for_generic_call() {
+ check(
+ r#"
+fn f<F: FnOnce(u8, u16) -> i32>(f: F) {
+ f($0)
+}
+"#,
+ expect![[r#"
+ (u8, u16) -> i32
+ ^^ ---
+ "#]],
+ );
+ }
}
manager: "cargo".to_string(),
uri: None,
content: None,
- repository: Some(lsif::Repository {
- url: pi.repo,
+ repository: pi.repo.map(|url| lsif::Repository {
+ url,
r#type: "git".to_string(),
commit_id: None,
}),
- version: Some(pi.version),
+ version: pi.version,
}));
self.package_map.insert(package_information, result_set_id);
result_set_id
package: Some(scip_types::Package {
manager: "cargo".to_string(),
name: package_name,
- version,
+ version: version.unwrap_or_else(|| ".".to_string()),
..Default::default()
})
.into(),
"",
);
}
+
+ #[test]
+ fn global_symbol_for_pub_struct() {
+ check_symbol(
+ r#"
+ //- /lib.rs crate:main
+ mod foo;
+
+ fn main() {
+ let _bar = foo::Bar { i: 0 };
+ }
+ //- /foo.rs
+ pub struct Bar$0 {
+ pub i: i32,
+ }
+ "#,
+ "rust-analyzer cargo main . foo/Bar#",
+ );
+ }
+
+ #[test]
+ fn global_symbol_for_pub_struct_reference() {
+ check_symbol(
+ r#"
+ //- /lib.rs crate:main
+ mod foo;
+
+ fn main() {
+ let _bar = foo::Bar$0 { i: 0 };
+ }
+ //- /foo.rs
+ pub struct Bar {
+ pub i: i32,
+ }
+ "#,
+ "rust-analyzer cargo main . foo/Bar#",
+ );
+ }
}
// parsing the old name.
config_data! {
struct ConfigData {
+ /// Whether to insert #[must_use] when generating `as_` methods
+ /// for enum variants.
+ assist_emitMustUse: bool = "false",
/// Placeholder expression to use for missing expressions in assists.
assist_expressionFillDefault: ExprFillDefaultDef = "\"todo\"",
allowed: None,
insert_use: self.insert_use_config(),
prefer_no_std: self.data.imports_prefer_no_std,
+ assist_emit_must_use: self.data.assist_emitMustUse,
}
}
ast_from_text(&format!("fn f() {buf}"))
}
+pub fn tail_only_block_expr(tail_expr: ast::Expr) -> ast::BlockExpr {
+ ast_from_text(&format!("fn f() {{ {tail_expr} }}"))
+}
+
/// Ideally this function wouldn't exist since it involves manual indenting.
/// It differs from `make::block_expr` by also supporting comments.
///
};
ast_from_text(&format!("fn f() {{ {text} }}"))
}
+
+pub fn let_else_stmt(
+ pattern: ast::Pat,
+ ty: Option<ast::Type>,
+ expr: ast::Expr,
+ diverging: ast::BlockExpr,
+) -> ast::LetStmt {
+ let mut text = String::new();
+ format_to!(text, "let {pattern}");
+ if let Some(ty) = ty {
+ format_to!(text, ": {ty}");
+ }
+ format_to!(text, " = {expr} else {diverging};");
+ ast_from_text(&format!("fn f() {{ {text} }}"))
+}
+
pub fn expr_stmt(expr: ast::Expr) -> ast::ExprStmt {
let semi = if expr.is_block_like() { "" } else { ";" };
ast_from_text(&format!("fn f() {{ {expr}{semi} (); }}"))
declarations and recursively process child modules. This is handled by the
[`module_tree_query`], with two slight variations.
-[`module_tree_query`]: https://github.com/rust-lang/rust-analyzer/blob/guide-2019-01/crates/hir/src/module_tree.rs#L116-L123
+[`module_tree_query`]: https://github.com/rust-lang/rust-analyzer/blob/guide-2019-01/crates/ra_hir/src/module_tree.rs#L115-L133
First, rust-analyzer builds a module tree for all crates in a source root
simultaneously. The main reason for this is historical (`module_tree` predates
need to re-execute it when we add/remove new files or when we change mod
declarations.
-[`submodules_query`]: https://github.com/rust-lang/rust-analyzer/blob/guide-2019-01/crates/hir/src/module_tree.rs#L41
+[`submodules_query`]: https://github.com/rust-lang/rust-analyzer/blob/guide-2019-01/crates/ra_hir/src/module_tree.rs#L41
We store the resulting modules in a `Vec`-based indexed arena. The indices in
the arena becomes module IDs. And this brings us to the next topic:
database we use includes a couple of [interners]. How to "garbage collect"
unused locations is an open question.
-[`LocationInterner`]: https://github.com/rust-lang/rust-analyzer/blob/guide-2019-01/crates/base_db/src/loc2id.rs#L65-L71
-[interners]: https://github.com/rust-lang/rust-analyzer/blob/guide-2019-01/crates/hir/src/db.rs#L22-L23
+[`LocationInterner`]: https://github.com/rust-lang/rust-analyzer/blob/guide-2019-01/crates/ra_db/src/loc2id.rs#L65-L71
+[interners]: https://github.com/rust-lang/rust-analyzer/blob/guide-2019-01/crates/ra_hir/src/db.rs#L22-L23
For example, we use `LocationInterner` to assign IDs to definitions of functions,
structs, enums, etc. The location, [`DefLoc`] contains two bits of information:
we do instead is we store "index" of the item among all of the items of a file
(so, a positional based ID, but localized to a single file).
-[`DefLoc`]: https://github.com/rust-lang/rust-analyzer/blob/guide-2019-01/crates/hir/src/ids.rs#L127-L139
+[`DefLoc`]: https://github.com/rust-lang/rust-analyzer/blob/guide-2019-01/crates/ra_hir/src/ids.rs#L129-L139
One thing we've glossed over for the time being is support for macros. We have
only proof of concept handling of macros at the moment, but they are extremely
`HirFileId`s bottoms out in `HirFileId::FileId`, that is, some source file
actually written by the user.
-[`HirFileId`]: https://github.com/rust-lang/rust-analyzer/blob/guide-2019-01/crates/hir/src/ids.rs#L18-L125
+[`HirFileId`]: https://github.com/rust-lang/rust-analyzer/blob/guide-2019-01/crates/ra_hir/src/ids.rs#L31-L93
Now that we understand how to identify a definition, in a source or in a
macro-generated file, we can discuss name resolution a bit.
we modify bodies of the items. After that we [loop] resolving all imports until
we've reached a fixed point.
-[lower]: https://github.com/rust-lang/rust-analyzer/blob/guide-2019-01/crates/hir/src/nameres/lower.rs#L113-L117
-[loop]: https://github.com/rust-lang/rust-analyzer/blob/guide-2019-01/crates/hir/src/nameres.rs#L186-L196
-
+[lower]: https://github.com/rust-lang/rust-analyzer/blob/guide-2019-01/crates/ra_hir/src/nameres/lower.rs#L113-L147
+[loop]: https://github.com/rust-lang/rust-analyzer/blob/guide-2019-01/crates/ra_hir/src/nameres.rs#L186-L196
And, given all our preparation with IDs and a position-independent representation,
it is satisfying to [test] that typing inside function body does not invalidate
name resolution results.
-[test]: https://github.com/rust-lang/rust-analyzer/blob/guide-2019-01/crates/hir/src/nameres/tests.rs#L376
+[test]: https://github.com/rust-lang/rust-analyzer/blob/guide-2019-01/crates/ra_hir/src/nameres/tests.rs#L376
An interesting fact about name resolution is that it "erases" all of the
intermediate paths from the imports: in the end, we know which items are defined
position-independent part of the lowering. The result of this query is stable.
Naturally, name resolution [uses] this stable projection query.
-[imports]: https://github.com/rust-lang/rust-analyzer/blob/guide-2019-01/crates/hir/src/nameres/lower.rs#L52-L59
-[`SourceMap`]: https://github.com/rust-lang/rust-analyzer/blob/guide-2019-01/crates/hir/src/nameres/lower.rs#L52-L59
-[projection query]: https://github.com/rust-lang/rust-analyzer/blob/guide-2019-01/crates/hir/src/nameres/lower.rs#L97-L103
-[uses]: https://github.com/rust-lang/rust-analyzer/blob/guide-2019-01/crates/hir/src/query_definitions.rs#L49
+[imports]: https://github.com/rust-lang/rust-analyzer/blob/guide-2019-01/crates/ra_hir/src/nameres/lower.rs#L52-L59
+[`SourceMap`]: https://github.com/rust-lang/rust-analyzer/blob/guide-2019-01/crates/ra_hir/src/nameres/lower.rs#L52-L59
+[projection query]: https://github.com/rust-lang/rust-analyzer/blob/guide-2019-01/crates/ra_hir/src/nameres/lower.rs#L97-L103
+[uses]: https://github.com/rust-lang/rust-analyzer/blob/guide-2019-01/crates/ra_hir/src/query_definitions.rs#L49
## Type inference
[@flodiebold]: https://github.com/flodiebold
[#327]: https://github.com/rust-lang/rust-analyzer/pull/327
-[lower the AST]: https://github.com/rust-lang/rust-analyzer/blob/guide-2019-01/crates/hir/src/expr.rs
-[positional ID]: https://github.com/rust-lang/rust-analyzer/blob/guide-2019-01/crates/hir/src/expr.rs#L13-L15
-[a source map]: https://github.com/rust-lang/rust-analyzer/blob/guide-2019-01/crates/hir/src/expr.rs#L41-L44
-[type inference]: https://github.com/rust-lang/rust-analyzer/blob/guide-2019-01/crates/hir/src/ty.rs#L1208-L1223
+[lower the AST]: https://github.com/rust-lang/rust-analyzer/blob/guide-2019-01/crates/ra_hir/src/expr.rs
+[positional ID]: https://github.com/rust-lang/rust-analyzer/blob/guide-2019-01/crates/ra_hir/src/expr.rs#L13-L15
+[a source map]: https://github.com/rust-lang/rust-analyzer/blob/guide-2019-01/crates/ra_hir/src/expr.rs#L41-L44
+[type inference]: https://github.com/rust-lang/rust-analyzer/blob/guide-2019-01/crates/ra_hir/src/ty.rs#L1208-L1223
## Tying it all together: completion
[catch]: https://github.com/rust-lang/rust-analyzer/blob/guide-2019-01/crates/ra_lsp_server/src/main_loop.rs#L436-L442
[the handler]: https://salsa.zulipchat.com/#narrow/stream/181542-rfcs.2Fsalsa-query-group/topic/design.20next.20steps
[ask analysis for completion]: https://github.com/rust-lang/rust-analyzer/blob/guide-2019-01/crates/ide_api/src/lib.rs#L439-L444
-[completion implementation]: https://github.com/rust-lang/rust-analyzer/blob/guide-2019-01/crates/ide_api/src/completion.rs#L46-L62
-[`CompletionContext`]: https://github.com/rust-lang/rust-analyzer/blob/guide-2019-01/crates/ide_api/src/completion/completion_context.rs#L14-L37
-["IntelliJ Trick"]: https://github.com/rust-lang/rust-analyzer/blob/guide-2019-01/crates/ide_api/src/completion/completion_context.rs#L72-L75
-[find an ancestor `fn` node]: https://github.com/rust-lang/rust-analyzer/blob/guide-2019-01/crates/ide_api/src/completion/completion_context.rs#L116-L120
-[semantic model]: https://github.com/rust-lang/rust-analyzer/blob/guide-2019-01/crates/ide_api/src/completion/completion_context.rs#L123
-[series of independent completion routines]: https://github.com/rust-lang/rust-analyzer/blob/guide-2019-01/crates/ide_api/src/completion.rs#L52-L59
-[`complete_dot`]: https://github.com/rust-lang/rust-analyzer/blob/guide-2019-01/crates/ide_api/src/completion/complete_dot.rs#L6-L22
+[ask analysis for completion]: https://github.com/rust-lang/rust-analyzer/blob/guide-2019-01/crates/ra_ide_api/src/lib.rs#L439-L444
+[completion implementation]: https://github.com/rust-lang/rust-analyzer/blob/guide-2019-01/crates/ra_ide_api/src/completion.rs#L46-L62
+[`CompletionContext`]: https://github.com/rust-lang/rust-analyzer/blob/guide-2019-01/crates/ra_ide_api/src/completion/completion_context.rs#L14-L37
+["IntelliJ Trick"]: https://github.com/rust-lang/rust-analyzer/blob/guide-2019-01/crates/ra_ide_api/src/completion/completion_context.rs#L72-L75
+[find an ancestor `fn` node]: https://github.com/rust-lang/rust-analyzer/blob/guide-2019-01/crates/ra_ide_api/src/completion/completion_context.rs#L116-L120
+[semantic model]: https://github.com/rust-lang/rust-analyzer/blob/guide-2019-01/crates/ra_ide_api/src/completion/completion_context.rs#L123
+[series of independent completion routines]: https://github.com/rust-lang/rust-analyzer/blob/guide-2019-01/crates/ra_ide_api/src/completion.rs#L52-L59
+[`complete_dot`]: https://github.com/rust-lang/rust-analyzer/blob/guide-2019-01/crates/ra_ide_api/src/completion/complete_dot.rs#L6-L22
+[[rust-analyzer.assist.emitMustUse]]rust-analyzer.assist.emitMustUse (default: `false`)::
++
+--
+Whether to insert #[must_use] when generating `as_` methods
+for enum variants.
+--
[[rust-analyzer.assist.expressionFillDefault]]rust-analyzer.assist.expressionFillDefault (default: `"todo"`)::
+
--
However, it won't install `rust-analyzer` automatically.
You can follow instructions for installing <<rust-analyzer-language-server-binary,`rust-analyzer` binary>>.
+=== Crates
+
+There is a package named `ra_ap_rust_analyzer` available on https://crates.io/crates/ra_ap_rust-analyzer[crates.io], for someone who wants to use it programmatically.
+
+For more details, see https://github.com/rust-lang/rust-analyzer/blob/master/.github/workflows/publish.yml[the publish workflow].
+
== Troubleshooting
Start with looking at the rust-analyzer version.
"esbuild": "^0.14.48",
"eslint": "^8.19.0",
"eslint-config-prettier": "^8.5.0",
- "ovsx": "^0.5.1",
+ "ovsx": "^0.5.2",
"prettier": "^2.7.1",
"tslib": "^2.4.0",
"typescript": "^4.7.4",
}
},
"node_modules/ovsx": {
- "version": "0.5.1",
- "resolved": "https://registry.npmjs.org/ovsx/-/ovsx-0.5.1.tgz",
- "integrity": "sha512-3OWq0l7DuVHi2bd2aQe5+QVQlFIqvrcw3/2vGXL404L6Tr+R4QHtzfnYYghv8CCa85xJHjU0RhcaC7pyXkAUbg==",
+ "version": "0.5.2",
+ "resolved": "https://registry.npmjs.org/ovsx/-/ovsx-0.5.2.tgz",
+ "integrity": "sha512-UbLultRCk46WddeA0Cly4hoRhzBJUiLgbIEViXlgOvV54LbsppClDkMLoCevUUBHoiNdMX2NuiSgURAEXgCZdw==",
"dev": true,
"dependencies": {
"commander": "^6.1.0",
}
},
"ovsx": {
- "version": "0.5.1",
- "resolved": "https://registry.npmjs.org/ovsx/-/ovsx-0.5.1.tgz",
- "integrity": "sha512-3OWq0l7DuVHi2bd2aQe5+QVQlFIqvrcw3/2vGXL404L6Tr+R4QHtzfnYYghv8CCa85xJHjU0RhcaC7pyXkAUbg==",
+ "version": "0.5.2",
+ "resolved": "https://registry.npmjs.org/ovsx/-/ovsx-0.5.2.tgz",
+ "integrity": "sha512-UbLultRCk46WddeA0Cly4hoRhzBJUiLgbIEViXlgOvV54LbsppClDkMLoCevUUBHoiNdMX2NuiSgURAEXgCZdw==",
"dev": true,
"requires": {
"commander": "^6.1.0",
"esbuild": "^0.14.48",
"eslint": "^8.19.0",
"eslint-config-prettier": "^8.5.0",
- "ovsx": "^0.5.1",
+ "ovsx": "^0.5.2",
"prettier": "^2.7.1",
"tslib": "^2.4.0",
"typescript": "^4.7.4",
{
"command": "rust-analyzer.syntaxTree",
"title": "Show Syntax Tree",
- "category": "rust-analyzer"
+ "category": "rust-analyzer (debug command)"
},
{
"command": "rust-analyzer.viewHir",
"title": "View Hir",
- "category": "rust-analyzer"
+ "category": "rust-analyzer (debug command)"
},
{
"command": "rust-analyzer.viewFileText",
"title": "View File Text (as seen by the server)",
- "category": "rust-analyzer"
+ "category": "rust-analyzer (debug command)"
},
{
"command": "rust-analyzer.viewItemTree",
"title": "Debug ItemTree",
- "category": "rust-analyzer"
+ "category": "rust-analyzer (debug command)"
+ },
+ {
+ "command": "rust-analyzer.shuffleCrateGraph",
+ "title": "Shuffle Crate Graph",
+ "category": "rust-analyzer (debug command)"
+ },
+ {
+ "command": "rust-analyzer.memoryUsage",
+ "title": "Memory Usage (Clears Database)",
+ "category": "rust-analyzer (debug command)"
},
{
"command": "rust-analyzer.viewCrateGraph",
"title": "Status",
"category": "rust-analyzer"
},
- {
- "command": "rust-analyzer.memoryUsage",
- "title": "Memory Usage (Clears Database)",
- "category": "rust-analyzer"
- },
- {
- "command": "rust-analyzer.shuffleCrateGraph",
- "title": "Shuffle Crate Graph",
- "category": "rust-analyzer"
- },
{
"command": "rust-analyzer.reloadWorkspace",
"title": "Reload workspace",
"type": "boolean"
},
"$generated-start": {},
+ "rust-analyzer.assist.emitMustUse": {
+ "markdownDescription": "Whether to insert #[must_use] when generating `as_` methods\nfor enum variants.",
+ "default": false,
+ "type": "boolean"
+ },
"rust-analyzer.assist.expressionFillDefault": {
"markdownDescription": "Placeholder expression to use for missing expressions in assists.",
"default": "todo",
[assign]
+
+[shortcut]
+
+[relabel]
+allow-unauthenticated = [
+ "S-*",
+]
+
+[autolabel."S-waiting-on-review"]
+new_pr = true
projects / rust.git / commitdiff