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fix: Fix wrong where clause rendering on hover

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This commit is contained in:
Lukas Wirth 2024-03-16 17:49:59 +01:00
parent 0dd89d7ee7
commit d69a81fddb
2 changed files with 211 additions and 109 deletions
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90
crates/hir/src/display.rs
View File

@ -159,6 +159,7 @@ impl HirDisplay for Adt {
impl HirDisplay for Struct {
fn hir_fmt(&self, f: &mut HirFormatter<'_>) -> Result<(), HirDisplayError> {
let module_id = self.module(f.db).id;
// FIXME: Render repr if its set explicitly?
write_visibility(module_id, self.visibility(f.db), f)?;
f.write_str("struct ")?;
write!(f, "{}", self.name(f.db).display(f.db.upcast()))?;
@ -166,37 +167,40 @@ impl HirDisplay for Struct {
write_generic_params(def_id, f)?;
let variant_data = self.variant_data(f.db);
if let StructKind::Tuple = variant_data.kind() {
f.write_char('(')?;
let mut it = variant_data.fields().iter().peekable();
match variant_data.kind() {
StructKind::Tuple => {
f.write_char('(')?;
let mut it = variant_data.fields().iter().peekable();
while let Some((id, _)) = it.next() {
let field = Field { parent: (*self).into(), id };
write_visibility(module_id, field.visibility(f.db), f)?;
field.ty(f.db).hir_fmt(f)?;
if it.peek().is_some() {
f.write_str(", ")?;
while let Some((id, _)) = it.next() {
let field = Field { parent: (*self).into(), id };
write_visibility(module_id, field.visibility(f.db), f)?;
field.ty(f.db).hir_fmt(f)?;
if it.peek().is_some() {
f.write_str(", ")?;
}
}
f.write_char(')')?;
write_where_clause(def_id, f)?;
}
StructKind::Record => {
let has_where_clause = write_where_clause(def_id, f)?;
let fields = self.fields(f.db);
f.write_char(if !has_where_clause { ' ' } else { '\n' })?;
if fields.is_empty() {
f.write_str("{}")?;
} else {
f.write_str("{\n")?;
for field in self.fields(f.db) {
f.write_str(" ")?;
field.hir_fmt(f)?;
f.write_str(",\n")?;
}
f.write_str("}")?;
}
}
f.write_str(");")?;
}
write_where_clause(def_id, f)?;
if let StructKind::Record = variant_data.kind() {
let fields = self.fields(f.db);
if fields.is_empty() {
f.write_str(" {}")?;
} else {
f.write_str(" {\n")?;
for field in self.fields(f.db) {
f.write_str(" ")?;
field.hir_fmt(f)?;
f.write_str(",\n")?;
}
f.write_str("}")?;
}
StructKind::Unit => _ = write_where_clause(def_id, f)?,
}
Ok(())
@ -210,11 +214,12 @@ impl HirDisplay for Enum {
write!(f, "{}", self.name(f.db).display(f.db.upcast()))?;
let def_id = GenericDefId::AdtId(AdtId::EnumId(self.id));
write_generic_params(def_id, f)?;
write_where_clause(def_id, f)?;
let has_where_clause = write_where_clause(def_id, f)?;
let variants = self.variants(f.db);
if !variants.is_empty() {
f.write_str(" {\n")?;
f.write_char(if !has_where_clause { ' ' } else { '\n' })?;
f.write_str("{\n")?;
for variant in variants {
f.write_str(" ")?;
variant.hir_fmt(f)?;
@ -234,11 +239,12 @@ impl HirDisplay for Union {
write!(f, "{}", self.name(f.db).display(f.db.upcast()))?;
let def_id = GenericDefId::AdtId(AdtId::UnionId(self.id));
write_generic_params(def_id, f)?;
write_where_clause(def_id, f)?;
let has_where_clause = write_where_clause(def_id, f)?;
let fields = self.fields(f.db);
if !fields.is_empty() {
f.write_str(" {\n")?;
f.write_char(if !has_where_clause { ' ' } else { '\n' })?;
f.write_str("{\n")?;
for field in self.fields(f.db) {
f.write_str(" ")?;
field.hir_fmt(f)?;
@ -446,7 +452,10 @@ fn write_generic_params(
Ok(())
}
fn write_where_clause(def: GenericDefId, f: &mut HirFormatter<'_>) -> Result<(), HirDisplayError> {
fn write_where_clause(
def: GenericDefId,
f: &mut HirFormatter<'_>,
) -> Result<bool, HirDisplayError> {
let params = f.db.generic_params(def);
// unnamed type targets are displayed inline with the argument itself, e.g. `f: impl Y`.
@ -465,7 +474,7 @@ fn write_where_clause(def: GenericDefId, f: &mut HirFormatter<'_>) -> Result<(),
});
if !has_displayable_predicate {
return Ok(());
return Ok(false);
}
let write_target = |target: &WherePredicateTypeTarget, f: &mut HirFormatter<'_>| match target {
@ -543,7 +552,7 @@ fn write_where_clause(def: GenericDefId, f: &mut HirFormatter<'_>) -> Result<(),
// End of final predicate. There must be at least one predicate here.
f.write_char(',')?;
Ok(())
Ok(true)
}
impl HirDisplay for Const {
@ -594,19 +603,20 @@ impl HirDisplay for Trait {
write!(f, "trait {}", data.name.display(f.db.upcast()))?;
let def_id = GenericDefId::TraitId(self.id);
write_generic_params(def_id, f)?;
write_where_clause(def_id, f)?;
let has_where_clause = write_where_clause(def_id, f)?;
if let Some(limit) = f.entity_limit {
let assoc_items = self.items(f.db);
let count = assoc_items.len().min(limit);
f.write_char(if !has_where_clause { ' ' } else { '\n' })?;
if count == 0 {
if assoc_items.is_empty() {
f.write_str(" {}")?;
f.write_str("{}")?;
} else {
f.write_str(" { /* … */ }")?;
f.write_str("{ /* … */ }")?;
}
} else {
f.write_str(" {\n")?;
f.write_str("{\n")?;
for item in &assoc_items[..count] {
f.write_str(" ")?;
match item {
@ -651,7 +661,6 @@ impl HirDisplay for TypeAlias {
write!(f, "type {}", data.name.display(f.db.upcast()))?;
let def_id = GenericDefId::TypeAliasId(self.id);
write_generic_params(def_id, f)?;
write_where_clause(def_id, f)?;
if !data.bounds.is_empty() {
f.write_str(": ")?;
f.write_joined(data.bounds.iter(), " + ")?;
@ -660,6 +669,7 @@ impl HirDisplay for TypeAlias {
f.write_str(" = ")?;
ty.hir_fmt(f)?;
}
write_where_clause(def_id, f)?;
Ok(())
}
}

230
crates/ide/src/hover/tests.rs
View File

@ -819,7 +819,7 @@ fn foo(foo: Foo) {
fn hover_tuple_struct() {
check(
r#"
struct Foo$0(pub u32)
struct Foo$0(pub u32) where u32: Copy;
"#,
expect![[r#"
*Foo*
@ -830,7 +830,99 @@ struct Foo$0(pub u32)
```rust
// size = 4, align = 4
struct Foo(pub u32);
struct Foo(pub u32)
where
u32: Copy,
```
"#]],
);
}
#[test]
fn hover_record_struct() {
check(
r#"
struct Foo$0 { field: u32 }
"#,
expect![[r#"
*Foo*
```rust
test
```
```rust
// size = 4, align = 4
struct Foo {
field: u32,
}
```
"#]],
);
check(
r#"
struct Foo$0 where u32: Copy { field: u32 }
"#,
expect![[r#"
*Foo*
```rust
test
```
```rust
// size = 4, align = 4
struct Foo
where
u32: Copy,
{
field: u32,
}
```
"#]],
);
}
#[test]
fn hover_unit_struct() {
check(
r#"
struct Foo$0 where u32: Copy;
"#,
expect![[r#"
*Foo*
```rust
test
```
```rust
// size = 0, align = 1
struct Foo
where
u32: Copy,
```
"#]],
);
}
#[test]
fn hover_type_alias() {
check(
r#"
type Fo$0o: Trait = S where T: Trait;
"#,
expect![[r#"
*Foo*
```rust
test
```
```rust
type Foo: Trait = S
where
T: Trait,
```
"#]],
);
@ -2540,7 +2632,7 @@ fn main() { let s$0t = S{ f1:Arg(0) }; }
focus_range: 7..10,
name: "Arg",
kind: Struct,
description: "struct Arg(u32);",
description: "struct Arg(u32)",
},
},
HoverGotoTypeData {
@ -2599,7 +2691,7 @@ fn main() { let s$0t = S{ f1: S{ f1: Arg(0) } }; }
focus_range: 7..10,
name: "Arg",
kind: Struct,
description: "struct Arg(u32);",
description: "struct Arg(u32)",
},
},
HoverGotoTypeData {
@ -2648,7 +2740,7 @@ fn main() { let s$0t = (A(1), B(2), M::C(3) ); }
focus_range: 7..8,
name: "A",
kind: Struct,
description: "struct A(u32);",
description: "struct A(u32)",
},
},
HoverGotoTypeData {
@ -2661,7 +2753,7 @@ fn main() { let s$0t = (A(1), B(2), M::C(3) ); }
focus_range: 22..23,
name: "B",
kind: Struct,
description: "struct B(u32);",
description: "struct B(u32)",
},
},
HoverGotoTypeData {
@ -2675,7 +2767,7 @@ fn main() { let s$0t = (A(1), B(2), M::C(3) ); }
name: "C",
kind: Struct,
container_name: "M",
description: "pub struct C(u32);",
description: "pub struct C(u32)",
},
},
],
@ -3331,26 +3423,26 @@ struct Foo<const BAR: Bar>;
impl<const BAR: Bar> Foo<BAR$0> {}
"#,
expect![[r#"
[
GoToType(
[
HoverGotoTypeData {
mod_path: "test::Bar",
nav: NavigationTarget {
file_id: FileId(
0,
),
full_range: 0..11,
focus_range: 7..10,
name: "Bar",
kind: Struct,
description: "struct Bar",
},
[
GoToType(
[
HoverGotoTypeData {
mod_path: "test::Bar",
nav: NavigationTarget {
file_id: FileId(
0,
),
full_range: 0..11,
focus_range: 7..10,
name: "Bar",
kind: Struct,
description: "struct Bar",
},
],
),
]
"#]],
},
],
),
]
"#]],
);
}
@ -3396,26 +3488,26 @@ impl Foo {
}
"#,
expect![[r#"
[
GoToType(
[
HoverGotoTypeData {
mod_path: "test::Foo",
nav: NavigationTarget {
file_id: FileId(
0,
),
full_range: 0..11,
focus_range: 7..10,
name: "Foo",
kind: Struct,
description: "struct Foo",
},
[
GoToType(
[
HoverGotoTypeData {
mod_path: "test::Foo",
nav: NavigationTarget {
file_id: FileId(
0,
),
full_range: 0..11,
focus_range: 7..10,
name: "Foo",
kind: Struct,
description: "struct Foo",
},
],
),
]
"#]],
},
],
),
]
"#]],
);
}
@ -3498,7 +3590,7 @@ struct S$0T<const C: usize = 1, T = Foo>(T);
```
```rust
struct ST<const C: usize = 1, T = Foo>(T);
struct ST<const C: usize = 1, T = Foo>(T)
```
"#]],
);
@ -3519,7 +3611,7 @@ struct S$0T<const C: usize = {40 + 2}, T = Foo>(T);
```
```rust
struct ST<const C: usize = {const}, T = Foo>(T);
struct ST<const C: usize = {const}, T = Foo>(T)
```
"#]],
);
@ -3541,7 +3633,7 @@ struct S$0T<const C: usize = VAL, T = Foo>(T);
```
```rust
struct ST<const C: usize = VAL, T = Foo>(T);
struct ST<const C: usize = VAL, T = Foo>(T)
```
"#]],
);
@ -5931,26 +6023,26 @@ fn foo() {
}
"#,
expect![[r#"
[
GoToType(
[
HoverGotoTypeData {
mod_path: "test::Foo",
nav: NavigationTarget {
file_id: FileId(
0,
),
full_range: 0..11,
focus_range: 7..10,
name: "Foo",
kind: Struct,
description: "struct Foo",
},
[
GoToType(
[
HoverGotoTypeData {
mod_path: "test::Foo",
nav: NavigationTarget {
file_id: FileId(
0,
),
full_range: 0..11,
focus_range: 7..10,
name: "Foo",
kind: Struct,
description: "struct Foo",
},
],
),
]
"#]],
},
],
),
]
"#]],
);
}
@ -6166,7 +6258,7 @@ pub struct Foo(i32);
```rust
// size = 4, align = 4
pub struct Foo(i32);
pub struct Foo(i32)
```
---
@ -6191,7 +6283,7 @@ pub struct Foo<T>(T);
```
```rust
pub struct Foo<T>(T);
pub struct Foo<T>(T)
```
---