Merge #11393

[rust.git] / crates / ide_completion / src / completions / record.rs

diff --git a/crates/ide_completion/src/completions/record.rs b/crates/ide_completion/src/completions/record.rs
index c7cf5e3e4b14ca82c4d3af9da86774d504cd3bbf..ec1ee292be41ab5381dbc70923d01830f3f9855f 100644 (file)
--- a/crates/ide_completion/src/completions/record.rs
+++ b/crates/ide_completion/src/completions/record.rs
@@ -1,35 +1,40 @@
 //! Complete fields in record literals and patterns.
-use ide_db::{helpers::FamousDefs, SymbolKind};
-use syntax::ast::Expr;
+use ide_db::SymbolKind;
+use syntax::{ast::Expr, T};
 
 use crate::{
-    item::CompletionKind, patterns::ImmediateLocation, CompletionContext, CompletionItem,
-    Completions,
+    patterns::ImmediateLocation, CompletionContext, CompletionItem, CompletionItemKind, Completions,
 };
 
 pub(crate) fn complete_record(acc: &mut Completions, ctx: &CompletionContext) -> Option<()> {
     let missing_fields = match &ctx.completion_location {
-        Some(ImmediateLocation::RecordExpr(record_expr)) => {
+        Some(
+            ImmediateLocation::RecordExpr(record_expr)
+            | ImmediateLocation::RecordExprUpdate(record_expr),
+        ) => {
             let ty = ctx.sema.type_of_expr(&Expr::RecordExpr(record_expr.clone()));
-            let default_trait = FamousDefs(&ctx.sema, ctx.krate).core_default_Default();
-            let impl_default_trait = default_trait
-                .zip(ty)
-                .map_or(false, |(default_trait, ty)| ty.impls_trait(ctx.db, default_trait, &[]));
+            let default_trait = ctx.famous_defs().core_default_Default();
+            let impl_default_trait = default_trait.zip(ty).map_or(false, |(default_trait, ty)| {
+                ty.original.impls_trait(ctx.db, default_trait, &[])
+            });
 
             let missing_fields = ctx.sema.record_literal_missing_fields(record_expr);
-            if impl_default_trait && !missing_fields.is_empty() {
+            if impl_default_trait && !missing_fields.is_empty() && ctx.path_qual().is_none() {
                 let completion_text = "..Default::default()";
-                let mut item = CompletionItem::new(
-                    CompletionKind::Snippet,
-                    ctx.source_range(),
-                    completion_text,
-                );
+                let mut item =
+                    CompletionItem::new(SymbolKind::Field, ctx.source_range(), completion_text);
                 let completion_text =
                     completion_text.strip_prefix(ctx.token.text()).unwrap_or(completion_text);
-                item.insert_text(completion_text).kind(SymbolKind::Field);
+                item.insert_text(completion_text);
                 item.add_to(acc);
             }
-
+            if ctx.previous_token_is(T![.]) {
+                let mut item =
+                    CompletionItem::new(CompletionItemKind::Snippet, ctx.source_range(), "..");
+                item.insert_text(".");
+                item.add_to(acc);
+                return None;
+            }
             missing_fields
         }
         Some(ImmediateLocation::RecordPat(record_pat)) => {
@@ -45,11 +50,114 @@ pub(crate) fn complete_record(acc: &mut Completions, ctx: &CompletionContext) ->
     Some(())
 }
 
+pub(crate) fn complete_record_literal(
+    acc: &mut Completions,
+    ctx: &CompletionContext,
+) -> Option<()> {
+    if !ctx.expects_expression() {
+        return None;
+    }
+
+    if let hir::Adt::Struct(strukt) = ctx.expected_type.as_ref()?.as_adt()? {
+        let module = if let Some(module) = ctx.module { module } else { strukt.module(ctx.db) };
+
+        let path = module.find_use_path(ctx.db, hir::ModuleDef::from(strukt));
+
+        acc.add_struct_literal(ctx, strukt, path, None);
+    }
+
+    Some(())
+}
+
 #[cfg(test)]
 mod tests {
-
     use crate::tests::check_edit;
 
+    #[test]
+    fn literal_struct_completion_edit() {
+        check_edit(
+            "FooDesc {…}",
+            r#"
+struct FooDesc { pub bar: bool }
+
+fn create_foo(foo_desc: &FooDesc) -> () { () }
+
+fn baz() {
+    let foo = create_foo(&$0);
+}
+            "#,
+            r#"
+struct FooDesc { pub bar: bool }
+
+fn create_foo(foo_desc: &FooDesc) -> () { () }
+
+fn baz() {
+    let foo = create_foo(&FooDesc { bar: ${1:()} }$0);
+}
+            "#,
+        )
+    }
+
+    #[test]
+    fn literal_struct_completion_from_sub_modules() {
+        check_edit(
+            "Struct {…}",
+            r#"
+mod submod {
+    pub struct Struct {
+        pub a: u64,
+    }
+}
+
+fn f() -> submod::Struct {
+    Stru$0
+}
+            "#,
+            r#"
+mod submod {
+    pub struct Struct {
+        pub a: u64,
+    }
+}
+
+fn f() -> submod::Struct {
+    submod::Struct { a: ${1:()} }$0
+}
+            "#,
+        )
+    }
+
+    #[test]
+    fn literal_struct_complexion_module() {
+        check_edit(
+            "FooDesc {…}",
+            r#"
+mod _69latrick {
+    pub struct FooDesc { pub six: bool, pub neuf: Vec<String>, pub bar: bool }
+    pub fn create_foo(foo_desc: &FooDesc) -> () { () }
+}
+
+fn baz() {
+    use _69latrick::*;
+
+    let foo = create_foo(&$0);
+}
+            "#,
+            r#"
+mod _69latrick {
+    pub struct FooDesc { pub six: bool, pub neuf: Vec<String>, pub bar: bool }
+    pub fn create_foo(foo_desc: &FooDesc) -> () { () }
+}
+
+fn baz() {
+    use _69latrick::*;
+
+    let foo = create_foo(&FooDesc { six: ${1:()}, neuf: ${2:()}, bar: ${3:()} }$0);
+}
+            "#,
+        );
+    }
+
     #[test]
     fn default_completion_edit() {
         check_edit(
@@ -108,6 +216,38 @@ impl Default for Struct {
     fn default() -> Self {}
 }
 
+fn foo() {
+    let other = Struct {
+        foo: 5,
+        ..Default::default()
+    };
+}
+"#,
+        );
+        check_edit(
+            "..Default::default()",
+            r#"
+//- minicore: default
+struct Struct { foo: u32, bar: usize }
+
+impl Default for Struct {
+    fn default() -> Self {}
+}
+
+fn foo() {
+    let other = Struct {
+        foo: 5,
+        ..$0
+    };
+}
+"#,
+            r#"
+struct Struct { foo: u32, bar: usize }
+
+impl Default for Struct {
+    fn default() -> Self {}
+}
+
 fn foo() {
     let other = Struct {
         foo: 5,