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-rw-r--r--crates/assists/src/handlers/generate_impl.rs42
1 files changed, 40 insertions, 2 deletions
diff --git a/crates/assists/src/handlers/generate_impl.rs b/crates/assists/src/handlers/generate_impl.rs
index 9989109b5..114974465 100644
--- a/crates/assists/src/handlers/generate_impl.rs
+++ b/crates/assists/src/handlers/generate_impl.rs
@@ -1,6 +1,6 @@
1use itertools::Itertools; 1use itertools::Itertools;
2use stdx::format_to; 2use stdx::format_to;
3use syntax::ast::{self, AstNode, GenericParamsOwner, NameOwner}; 3use syntax::ast::{self, AstNode, AttrsOwner, GenericParamsOwner, NameOwner};
4 4
5use crate::{AssistContext, AssistId, AssistKind, Assists}; 5use crate::{AssistContext, AssistId, AssistKind, Assists};
6 6
@@ -27,6 +27,7 @@ pub(crate) fn generate_impl(acc: &mut Assists, ctx: &AssistContext) -> Option<()
27 let nominal = ctx.find_node_at_offset::<ast::AdtDef>()?; 27 let nominal = ctx.find_node_at_offset::<ast::AdtDef>()?;
28 let name = nominal.name()?; 28 let name = nominal.name()?;
29 let target = nominal.syntax().text_range(); 29 let target = nominal.syntax().text_range();
30
30 acc.add( 31 acc.add(
31 AssistId("generate_impl", AssistKind::Generate), 32 AssistId("generate_impl", AssistKind::Generate),
32 format!("Generate impl for `{}`", name), 33 format!("Generate impl for `{}`", name),
@@ -35,7 +36,15 @@ pub(crate) fn generate_impl(acc: &mut Assists, ctx: &AssistContext) -> Option<()
35 let type_params = nominal.generic_param_list(); 36 let type_params = nominal.generic_param_list();
36 let start_offset = nominal.syntax().text_range().end(); 37 let start_offset = nominal.syntax().text_range().end();
37 let mut buf = String::new(); 38 let mut buf = String::new();
38 buf.push_str("\n\nimpl"); 39 buf.push_str("\n\n");
40 nominal
41 .attrs()
42 .filter(|attr| {
43 attr.as_simple_call().map(|(name, _arg)| name == "cfg").unwrap_or(false)
44 })
45 .for_each(|attr| buf.push_str(format!("{}\n", attr.to_string()).as_str()));
46
47 buf.push_str("impl");
39 if let Some(type_params) = &type_params { 48 if let Some(type_params) = &type_params {
40 format_to!(buf, "{}", type_params.syntax()); 49 format_to!(buf, "{}", type_params.syntax());
41 } 50 }
@@ -91,6 +100,35 @@ mod tests {
91 "struct Foo<'a, T: Foo<'a>> {<|>}", 100 "struct Foo<'a, T: Foo<'a>> {<|>}",
92 "struct Foo<'a, T: Foo<'a>> {}\n\nimpl<'a, T: Foo<'a>> Foo<'a, T> {\n $0\n}", 101 "struct Foo<'a, T: Foo<'a>> {}\n\nimpl<'a, T: Foo<'a>> Foo<'a, T> {\n $0\n}",
93 ); 102 );
103 check_assist(
104 generate_impl,
105 r#"
106 #[cfg(feature = "foo")]
107 struct Foo<'a, T: Foo<'a>> {<|>}"#,
108 r#"
109 #[cfg(feature = "foo")]
110 struct Foo<'a, T: Foo<'a>> {}
111
112 #[cfg(feature = "foo")]
113 impl<'a, T: Foo<'a>> Foo<'a, T> {
114 $0
115 }"#,
116 );
117
118 check_assist(
119 generate_impl,
120 r#"
121 #[cfg(not(feature = "foo"))]
122 struct Foo<'a, T: Foo<'a>> {<|>}"#,
123 r#"
124 #[cfg(not(feature = "foo"))]
125 struct Foo<'a, T: Foo<'a>> {}
126
127 #[cfg(not(feature = "foo"))]
128 impl<'a, T: Foo<'a>> Foo<'a, T> {
129 $0
130 }"#,
131 );
94 } 132 }
95 133
96 #[test] 134 #[test]