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fix: use placeholder as default type in Generate function.

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This commit is contained in:
Dawer 2021-09-04 13:43:36 +05:00
parent 5506e0dfaf
commit a6c650edf6
2 changed files with 31 additions and 28 deletions
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56
crates/ide_assists/src/handlers/generate_function.rs
View File

@ -37,7 +37,7 @@
// bar("", baz());
// }
//
// fn bar(arg: &str, baz: Baz) ${0:-> ()} {
// fn bar(arg: &str, baz: Baz) ${0:-> _} {
// todo!()
// }
//
@ -342,7 +342,7 @@ fn render(self) -> FunctionTemplate {
}
/// Makes an optional return type along with whether the return type should be focused by the cursor.
/// If we cannot infer what the return type should be, we create unit as a placeholder.
/// If we cannot infer what the return type should be, we create a placeholder type.
///
/// The rule for whether we focus a return type or not (and thus focus the function body),
/// is rather simple:
@ -357,14 +357,14 @@ fn make_return_type(
) -> (Option<ast::RetType>, bool) {
let (ret_ty, should_focus_return_type) = {
match ctx.sema.type_of_expr(call).map(TypeInfo::original) {
Some(ty) if ty.is_unknown() => (Some(make::ty_unit()), true),
None => (Some(make::ty_unit()), true),
Some(ty) if ty.is_unknown() => (Some(make::ty_placeholder()), true),
None => (Some(make::ty_placeholder()), true),
Some(ty) if ty.is_unit() => (None, false),
Some(ty) => {
let rendered = ty.display_source_code(ctx.db(), target_module.into());
match rendered {
Ok(rendered) => (Some(make::ty(&rendered)), false),
Err(_) => (Some(make::ty_unit()), true),
Err(_) => (Some(make::ty_placeholder()), true),
}
}
}
@ -458,7 +458,7 @@ fn fn_args(
ty
}
}
None => String::from("()"),
None => String::from("_"),
});
}
deduplicate_arg_names(&mut arg_names);
@ -639,7 +639,7 @@ fn foo() {
bar();
}
fn bar() ${0:-> ()} {
fn bar() ${0:-> _} {
todo!()
}
",
@ -666,7 +666,7 @@ fn foo() {
}
}
fn bar() ${0:-> ()} {
fn bar() ${0:-> _} {
todo!()
}
",
@ -690,7 +690,7 @@ fn foo1() {
bar();
}
fn bar() ${0:-> ()} {
fn bar() ${0:-> _} {
todo!()
}
@ -716,7 +716,7 @@ fn foo() {
bar();
}
fn bar() ${0:-> ()} {
fn bar() ${0:-> _} {
todo!()
}
}
@ -740,7 +740,7 @@ fn foo() {
bar(BazBaz);
}
fn bar(baz_baz: BazBaz) ${0:-> ()} {
fn bar(baz_baz: BazBaz) ${0:-> _} {
todo!()
}
",
@ -763,7 +763,7 @@ fn foo() {
bar(&BazBaz as *const BazBaz);
}
fn bar(baz_baz: *const BazBaz) ${0:-> ()} {
fn bar(baz_baz: *const BazBaz) ${0:-> _} {
todo!()
}
",
@ -788,7 +788,7 @@ fn foo() {
bar(baz());
}
fn bar(baz: Baz) ${0:-> ()} {
fn bar(baz: Baz) ${0:-> _} {
todo!()
}
",
@ -1091,7 +1091,7 @@ fn foo() {
bar(Baz::new);
}
fn bar(new: fn) ${0:-> ()} {
fn bar(new: fn) ${0:-> _} {
todo!()
}
",
@ -1115,7 +1115,7 @@ fn foo() {
bar(closure)
}
fn bar(closure: ()) {
fn bar(closure: _) {
${0:todo!()}
}
",
@ -1123,7 +1123,7 @@ fn bar(closure: ()) {
}
#[test]
fn unresolveable_types_default_to_unit() {
fn unresolveable_types_default_to_placeholder() {
check_assist(
generate_function,
r"
@ -1136,7 +1136,7 @@ fn foo() {
bar(baz)
}
fn bar(baz: ()) {
fn bar(baz: _) {
${0:todo!()}
}
",
@ -1400,7 +1400,7 @@ fn foo(&self) {
self.bar();
}
fn bar(&self) ${0:-> ()} {
fn bar(&self) ${0:-> _} {
todo!()
}
}
@ -1422,7 +1422,7 @@ fn foo() {
bar(42).await();
}
async fn bar(arg: i32) ${0:-> ()} {
async fn bar(arg: i32) ${0:-> _} {
todo!()
}
",
@ -1443,7 +1443,7 @@ fn create_method() {
impl S {
fn bar(&self) ${0:-> ()} {
fn bar(&self) ${0:-> _} {
todo!()
}
}
@ -1465,7 +1465,7 @@ impl S {}
struct S;
fn foo() {S.bar();}
impl S {
fn bar(&self) ${0:-> ()} {
fn bar(&self) ${0:-> _} {
todo!()
}
}
@ -1490,7 +1490,7 @@ mod s {
impl S {
pub(crate) fn bar(&self) ${0:-> ()} {
pub(crate) fn bar(&self) ${0:-> _} {
todo!()
}
}
@ -1523,7 +1523,7 @@ fn foo() {
impl S {
fn bar(&self) ${0:-> ()} {
fn bar(&self) ${0:-> _} {
todo!()
}
}
@ -1546,7 +1546,7 @@ fn create_method_with_cursor_anywhere_on_call_expresion() {
impl S {
fn bar(&self) ${0:-> ()} {
fn bar(&self) ${0:-> _} {
todo!()
}
}
@ -1568,7 +1568,7 @@ fn create_static_method() {
impl S {
fn bar() ${0:-> ()} {
fn bar() ${0:-> _} {
todo!()
}
}
@ -1590,7 +1590,7 @@ impl S {}
struct S;
fn foo() {S::bar();}
impl S {
fn bar() ${0:-> ()} {
fn bar() ${0:-> _} {
todo!()
}
}
@ -1615,7 +1615,7 @@ mod s {
impl S {
pub(crate) fn bar() ${0:-> ()} {
pub(crate) fn bar() ${0:-> _} {
todo!()
}
}
@ -1639,7 +1639,7 @@ fn create_static_method_with_cursor_anywhere_on_call_expresion() {
impl S {
fn bar() ${0:-> ()} {
fn bar() ${0:-> _} {
todo!()
}
}

3
crates/syntax/src/ast/make.rs
View File

@ -95,6 +95,9 @@ pub fn lifetime(text: &str) -> ast::Lifetime {
pub fn ty(text: &str) -> ast::Type {
ty_from_text(text)
}
pub fn ty_placeholder() -> ast::Type {
ty_from_text("_")
}
pub fn ty_unit() -> ast::Type {
ty_from_text("()")
}