1 //! This module defines an accumulator for completions which are going to be presented to user.
3 pub(crate) mod attribute;
5 pub(crate) mod flyimport;
6 pub(crate) mod fn_param;
7 pub(crate) mod keyword;
8 pub(crate) mod lifetime;
10 pub(crate) mod pattern;
11 pub(crate) mod postfix;
12 pub(crate) mod qualified_path;
13 pub(crate) mod record;
14 pub(crate) mod snippet;
15 pub(crate) mod trait_impl;
16 pub(crate) mod unqualified_path;
21 use ide_db::SymbolKind;
24 item::{Builder, CompletionKind},
27 enum_variant::render_variant,
28 function::{render_fn, render_method},
30 pattern::{render_struct_pat, render_variant_pat},
31 render_field, render_resolution, render_tuple_field,
32 type_alias::render_type_alias,
35 CompletionContext, CompletionItem, CompletionItemKind,
38 /// Represents an in-progress set of completions being built.
39 #[derive(Debug, Default)]
40 pub struct Completions {
41 buf: Vec<CompletionItem>,
44 impl Into<Vec<CompletionItem>> for Completions {
45 fn into(self) -> Vec<CompletionItem> {
51 /// Convenience method, which allows to add a freshly created completion into accumulator
52 /// without binding it to the variable.
53 pub(crate) fn add_to(self, acc: &mut Completions) {
59 pub(crate) fn add(&mut self, item: CompletionItem) {
63 pub(crate) fn add_all<I>(&mut self, items: I)
66 I::Item: Into<CompletionItem>,
68 items.into_iter().for_each(|item| self.add(item.into()))
71 pub(crate) fn add_field(
73 ctx: &CompletionContext,
74 receiver: Option<hir::Name>,
78 let item = render_field(RenderContext::new(ctx), receiver, field, ty);
82 pub(crate) fn add_tuple_field(
84 ctx: &CompletionContext,
85 receiver: Option<hir::Name>,
89 let item = render_tuple_field(RenderContext::new(ctx), receiver, field, ty);
93 pub(crate) fn add_static_lifetime(&mut self, ctx: &CompletionContext) {
95 CompletionItem::new(CompletionKind::Reference, ctx.source_range(), "'static");
96 item.kind(CompletionItemKind::SymbolKind(SymbolKind::LifetimeParam));
97 self.add(item.build());
100 pub(crate) fn add_resolution(
102 ctx: &CompletionContext,
103 local_name: hir::Name,
104 resolution: &hir::ScopeDef,
106 if let Some(item) = render_resolution(RenderContext::new(ctx), local_name, resolution) {
111 pub(crate) fn add_macro(
113 ctx: &CompletionContext,
114 name: Option<hir::Name>,
115 macro_: hir::MacroDef,
117 let name = match name {
121 if let Some(item) = render_macro(RenderContext::new(ctx), None, name, macro_) {
126 pub(crate) fn add_function(
128 ctx: &CompletionContext,
130 local_name: Option<hir::Name>,
132 if let Some(item) = render_fn(RenderContext::new(ctx), None, local_name, func) {
137 pub(crate) fn add_method(
139 ctx: &CompletionContext,
141 receiver: Option<hir::Name>,
142 local_name: Option<hir::Name>,
144 if let Some(item) = render_method(RenderContext::new(ctx), None, receiver, local_name, func)
150 pub(crate) fn add_variant_pat(
152 ctx: &CompletionContext,
153 variant: hir::Variant,
154 local_name: Option<hir::Name>,
156 if let Some(item) = render_variant_pat(RenderContext::new(ctx), variant, local_name, None) {
161 pub(crate) fn add_qualified_variant_pat(
163 ctx: &CompletionContext,
164 variant: hir::Variant,
167 if let Some(item) = render_variant_pat(RenderContext::new(ctx), variant, None, Some(path)) {
172 pub(crate) fn add_struct_pat(
174 ctx: &CompletionContext,
176 local_name: Option<hir::Name>,
178 if let Some(item) = render_struct_pat(RenderContext::new(ctx), strukt, local_name) {
183 pub(crate) fn add_const(&mut self, ctx: &CompletionContext, constant: hir::Const) {
184 if let Some(item) = render_const(RenderContext::new(ctx), constant) {
189 pub(crate) fn add_type_alias(&mut self, ctx: &CompletionContext, type_alias: hir::TypeAlias) {
190 if let Some(item) = render_type_alias(RenderContext::new(ctx), type_alias) {
195 pub(crate) fn add_qualified_enum_variant(
197 ctx: &CompletionContext,
198 variant: hir::Variant,
201 let item = render_variant(RenderContext::new(ctx), None, None, variant, Some(path));
205 pub(crate) fn add_enum_variant(
207 ctx: &CompletionContext,
208 variant: hir::Variant,
209 local_name: Option<hir::Name>,
211 let item = render_variant(RenderContext::new(ctx), None, local_name, variant, None);
216 fn complete_enum_variants(
217 acc: &mut Completions,
218 ctx: &CompletionContext,
219 enum_data: hir::Enum,
220 cb: impl Fn(&mut Completions, &CompletionContext, hir::Variant, hir::ModPath),
222 let variants = enum_data.variants(ctx.db);
224 let module = if let Some(module) = ctx.scope.module() {
225 // Compute path from the completion site if available.
228 // Otherwise fall back to the enum's definition site.
229 enum_data.module(ctx.db)
232 if let Some(impl_) = ctx.impl_def.as_ref().and_then(|impl_| ctx.sema.to_def(impl_)) {
233 if impl_.self_ty(ctx.db).as_adt() == Some(hir::Adt::Enum(enum_data)) {
234 for &variant in &variants {
235 let self_path = hir::ModPath::from_segments(
236 hir::PathKind::Plain,
237 iter::once(known::SELF_TYPE).chain(iter::once(variant.name(ctx.db))),
239 cb(acc, ctx, variant, self_path);
244 for variant in variants {
245 if let Some(path) = module.find_use_path(ctx.db, hir::ModuleDef::from(variant)) {
246 // Variants with trivial paths are already added by the existing completion logic,
247 // so we should avoid adding these twice
248 if path.segments().len() > 1 {
249 cb(acc, ctx, variant, path);