1 //! Renderer for `struct` literal.
3 use hir::{db::HirDatabase, HasAttrs, HasVisibility, Name, StructKind};
4 use ide_db::helpers::SnippetCap;
5 use itertools::Itertools;
8 use crate::{render::RenderContext, CompletionItem, CompletionItemKind};
10 pub(crate) fn render_struct_literal(
11 ctx: RenderContext<'_>,
13 path: Option<hir::ModPath>,
14 local_name: Option<Name>,
15 ) -> Option<CompletionItem> {
16 let _p = profile::span("render_struct_literal");
18 let fields = strukt.fields(ctx.db());
19 let (visible_fields, fields_omitted) = visible_fields(&ctx, &fields, strukt)?;
22 // If some fields are private you can't make `struct` literal.
26 let name = local_name.unwrap_or_else(|| strukt.name(ctx.db())).to_smol_str();
28 let literal = render_literal(&ctx, path, &name, strukt.kind(ctx.db()), &visible_fields)?;
30 Some(build_completion(ctx, name, literal, strukt))
34 ctx: RenderContext<'_>,
37 def: impl HasAttrs + Copy,
39 let mut item = CompletionItem::new(
40 CompletionItemKind::Snippet,
42 SmolStr::from_iter([&name, " {…}"]),
44 item.set_documentation(ctx.docs(def)).set_deprecated(ctx.is_deprecated(def)).detail(&literal);
45 match ctx.snippet_cap() {
46 Some(snippet_cap) => item.insert_snippet(snippet_cap, literal),
47 None => item.insert_text(literal),
53 ctx: &RenderContext<'_>,
54 path: Option<hir::ModPath>,
57 fields: &[hir::Field],
61 let qualified_name = if let Some(path) = path {
62 path_string = path.to_string();
68 let mut literal = match kind {
69 StructKind::Tuple if ctx.snippet_cap().is_some() => {
70 render_tuple_as_literal(fields, qualified_name)
72 StructKind::Record => {
73 render_record_as_literal(ctx.db(), ctx.snippet_cap(), fields, qualified_name)
78 if ctx.snippet_cap().is_some() {
79 literal.push_str("$0");
84 fn render_record_as_literal(
86 snippet_cap: Option<SnippetCap>,
87 fields: &[hir::Field],
90 let fields = fields.iter();
91 if snippet_cap.is_some() {
96 .map(|(idx, field)| format!("{}: ${{{}:()}}", field.name(db), idx + 1))
103 fields.map(|field| format!("{}: ()", field.name(db))).format(", "),
109 fn render_tuple_as_literal(fields: &[hir::Field], name: &str) -> String {
112 fields.iter().enumerate().map(|(idx, _)| format!("${}", idx + 1)).format(", "),
118 ctx: &RenderContext<'_>,
119 fields: &[hir::Field],
121 ) -> Option<(Vec<hir::Field>, bool)> {
122 let module = ctx.completion.module?;
123 let n_fields = fields.len();
126 .filter(|field| field.is_visible_from(ctx.db(), module))
128 .collect::<Vec<_>>();
131 n_fields - fields.len() > 0 || item.attrs(ctx.db()).by_key("non_exhaustive").exists();
132 Some((fields, fields_omitted))