item_scope::BuiltinShadowMode,

path::{GenericArgs, Path},

type_ref::{Mutability, Rawness, TypeRef},

};

pub struct LowerCtx<'a> {

}

ast::Expr::BlockExpr(e) => match e.modifier() {

Some(ast::BlockModifier::Try(_)) => {

}

Some(ast::BlockModifier::Unsafe(_)) => {

}

Some(ast::BlockModifier::Label(label)) => {

let label = self.collect_label(label);

}

None => self.collect_block(e),

},

ast::Expr::LoopExpr(e) => {

}

fn collect_block(&mut self, block: ast::BlockExpr) -> ExprId {

let file_local_id = self.ast_id_map.ast_id(&block);

let ast_id = AstId::new(self.expander.current_file_id, file_local_id);

let block_loc =

});

let syntax_node_ptr = AstPtr::new(&block.into());

self.expander.def_map = prev_def_map;

self.expander.module = prev_local_module;

self.print_expr(*expr);

w!(self, "?");

}

Expr::Cast { expr, type_ref } => {

self.print_expr(*expr);

w!(self, " as ");

}

w!(self, ")");

}

Expr::Array(arr) => {

w!(self, "[");

if !matches!(arr, Array::ElementList { elements, .. } if elements.is_empty()) {

}

Expr::Literal(lit) => self.print_literal(lit),

Expr::Block { id: _, statements, tail, label } => {

}

}

}

}

fn print_pat(&mut self, pat: PatId) {

scopes.set_scope(expr, scope);

compute_block_scopes(statements, *tail, body, scopes, &mut scope);

}

Expr::For { iterable, pat, body: body_expr, label } => {

compute_expr_scopes(*iterable, body, scopes, scope);

let mut scope = scopes.new_labeled_scope(*scope, make_label(label));

tail: Option<ExprId>,

label: Option<LabelId>,

},

Loop {

body: ExprId,

label: Option<LabelId>,

Try {

expr: ExprId,

},

Cast {

expr: ExprId,

type_ref: Interned<TypeRef>,

exprs: Box<[ExprId]>,

is_assignee_expr: bool,

},

Array(Array),

Literal(Literal),

Underscore,

Expr::Let { expr, .. } => {

f(*expr);

}

for stmt in statements.iter() {

match stmt {

if let &Some(expr) = initializer {

f(expr);

}

}

Statement::Expr { expr: expression, .. } => f(*expression),

}

f(expr);

}

}

Expr::Loop { body, .. } => f(*body),

Expr::While { condition, body, .. } => {

f(*condition);

}

}

}

// If a path of the shape `u16::from_le_bytes` failed to resolve at all, then we fall back

unsafe_expr_cb(UnsafeExpr { expr: current, inside_unsafe_block });

}

}

}

_ => {}

}

}

}

fn infer_expr_inner(&mut self, tgt_expr: ExprId, expected: &Expectation) -> Ty {

self.db.unwind_if_cancelled();

Expr::Missing => self.err_ty(),

&Expr::If { condition, then_branch, else_branch } => {

let expected = &expected.adjust_for_branches(&mut self.table);

condition,

&Expectation::HasType(self.result.standard_types.bool_.clone()),

);

self.result.standard_types.bool_.clone()

}

Expr::Block { statements, tail, label, id: _ } => {

}

self.with_breakable_ctx(BreakableKind::Border, None, None, |this| {

})

.1

}

// The type that is returned from the try block

let try_ty = self.table.new_type_var();

if let Some(ty) = expected.only_has_type(&mut self.table) {

let ok_ty =

self.resolve_associated_type(try_ty.clone(), self.resolve_ops_try_output());

try_ty

}

let ret_ty = self.table.new_type_var();

let prev_diverges = mem::replace(&mut self.diverges, Diverges::Maybe);

let prev_ret_ty = mem::replace(&mut self.return_ty, ret_ty.clone());

let (_, inner_ty) =

self.with_breakable_ctx(BreakableKind::Border, None, None, |this| {

});

self.diverges = prev_diverges;

// Use the first type parameter as the output type of future.

// existential type AsyncBlockImplTrait<InnerType>: Future<Output = InnerType>

let opaque_ty_id = self.db.intern_impl_trait_id(impl_trait_id).into();

TyKind::OpaqueType(opaque_ty_id, Substitution::from1(Interner, inner_ty))

.intern(Interner)

Expr::Match { expr, arms } => {

let input_ty = self.infer_expr(*expr, &Expectation::none());

self.result.standard_types.never.clone()

} else {

}

}

Expr::Path(p) => {

// FIXME this could be more efficient...

expr: ExprId,

statements: &[Statement],

tail: Option<ExprId>,

expected: &Expectation,

) -> Ty {

}

}

}

}

}

fn lookup_field(

id: ExprOrPatId,

) -> Option<Ty> {

let (value, self_subst) = if let Some(type_ref) = path.type_anchor() {

let ty = self.make_ty(type_ref);

let remaining_segments_for_ty = path.segments().take(path.segments().len() - 1);

let ctx = crate::lower::TyLoweringContext::new(self.db, resolver);

let (ty, _) = ctx.lower_ty_relative_path(ty, None, remaining_segments_for_ty);

} else {

let value_or_partial =

resolver.resolve_path_in_value_ns(self.db.upcast(), path.mod_path())?;

};

let typable: ValueTyDefId = match value {

ValueNs::FunctionId(it) => it.into(),

ValueNs::ConstId(it) => it.into(),

ValueNs::StaticId(it) => it.into(),

let ty = self.db.value_ty(struct_id.into()).substitute(Interner, &substs);

return Some(ty);

} else {

return None;

}

}

}

Ok(result)

}

Expr::Block { id: _, statements, tail, label } => {

}

Expr::Loop { body, label } => self.lower_loop(current, *label, |this, begin, _| {

let (_, block) = this.lower_expr_to_some_place(*body, begin)?;

self.push_assignment(current, place, r);

Ok(current)

}

Expr::Array(l) => match l {

Array::ElementList { elements, .. } => {

let elem_ty = match &self.expr_ty(expr_id).data(Interner).kind {

}

}

fn lower_literal_to_operand(&mut self, ty: Ty, l: &Literal) -> Result<Operand> {

let size = layout_of_ty(self.db, &ty, self.owner.module(self.db.upcast()).krate())?

.size

Some(tracing::subscriber::set_default(subscriber))

}

fn check_types(ra_fixture: &str) {

check_impl(ra_fixture, false, true, false)

}

fn check_types_source_code(ra_fixture: &str) {

check_impl(ra_fixture, false, true, true)

}

fn check_no_mismatches(ra_fixture: &str) {

check_impl(ra_fixture, true, false, false)

}

fn check(ra_fixture: &str) {

check_impl(ra_fixture, false, false, false)

}

fn check_impl(ra_fixture: &str, allow_none: bool, only_types: bool, display_source: bool) {

let _tracing = setup_tracing();

let (db, files) = TestDB::with_many_files(ra_fixture);

"#,

);

}

123..167 '{ ...o(); }': ()

133..134 's': &S

137..151 'unsafe { f() }': &S

146..147 'f': fn f() -> &S

146..149 'f()': &S

157..158 's': &S

183..184 'x': usize

190..191 'x': usize

201..205 'E::B': E

216..217 '1': usize

227..231 'E::B': E

235..237 '10': usize

61..320 '{ ... }': ()

75..79 'name': &{unknown}

82..166 'if doe... }': &{unknown}

99..128 '{ ... }': &{unknown}

113..118 'first': &{unknown}

134..166 '{ ... }': &{unknown}

181..188 'content': &{unknown}

191..313 'if ICE... }': &{unknown}

194..231 'ICE_RE..._VALUE': {unknown}

241..246 '&name': &&{unknown}

242..246 'name': &{unknown}

248..276 '{ ... }': &{unknown}

20..31 '{ "first" }': ()

22..29 '"first"': &str

72..190 '{ ...] 13 }': ()

80..86 '"fake"': &str

95..101 '"fake"': &str

108..120 '{ "second" }': ()

110..118 '"second"': &str

71..89 'MyUnio...o: 0 }': MyUnion

86..87 '0': u32

95..113 'unsafe...(u); }': ()

104..107 'baz': fn baz(MyUnion)

104..110 'baz(u)': ()

108..109 'u': MyUnion

126..146 'MyUnio... 0.0 }': MyUnion

141..144 '0.0': f32

152..170 'unsafe...(u); }': ()

161..164 'baz': fn baz(MyUnion)

161..167 'baz(u)': ()

165..166 'u': MyUnion

16..193 '{ ...2 }; }': ()

26..27 'x': i32

30..43 'unsafe { 92 }': i32

39..41 '92': i32

53..54 'y': impl Future<Output = ()>

57..85 'async ...wait }': impl Future<Output = ()>

65..77 'async { () }': impl Future<Output = ()>

65..83 'async ....await': ()

73..75 '()': ()

95..96 'z': ControlFlow<(), ()>

130..140 'try { () }': ControlFlow<(), ()>

136..138 '()': ()

150..151 'w': i32

154..166 'const { 92 }': i32

162..164 '92': i32

176..177 't': i32

180..190 ''a: { 92 }': i32

83..84 'f': F

89..91 '{}': ()

103..231 '{ ... }); }': ()

109..161 'async ... }': impl Future<Output = Result<(), ()>>

125..139 'return Err(())': !

132..135 'Err': Err<(), ()>(()) -> Result<(), ()>

167..171 'test': fn test<(), (), || -> impl Future<Output = Result<(), ()>>, impl Future<Output = Result<(), ()>>>(|| -> impl Future<Output = Result<(), ()>>)

167..228 'test(|... })': ()

172..227 '|| asy... }': || -> impl Future<Output = Result<(), ()>>

175..227 'async ... }': impl Future<Output = Result<(), ()>>

191..205 'return Err(())': !

198..201 'Err': Err<(), ()>(()) -> Result<(), ()>

extract_variable,

r"

fn foo() {

something_else();

}",

r"