50 lines
1.7 KiB
Rust
50 lines
1.7 KiB
Rust
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//! Completion of names from the current scope in expression position.
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use hir::ScopeDef;
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use crate::{
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context::{PathCompletionCtx, PathKind, PathQualifierCtx},
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CompletionContext, Completions,
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};
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pub(crate) fn complete_expr_path(acc: &mut Completions, ctx: &CompletionContext) {
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let _p = profile::span("complete_expr_path");
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if ctx.is_path_disallowed() {
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return;
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}
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let (&is_absolute_path, qualifier) = match &ctx.path_context {
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Some(PathCompletionCtx {
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kind: Some(PathKind::Expr), is_absolute_path, qualifier, ..
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}) => (is_absolute_path, qualifier),
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_ => return,
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};
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match qualifier {
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Some(PathQualifierCtx { .. }) => return,
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None if is_absolute_path => acc.add_crate_roots(ctx),
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None => {
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acc.add_nameref_keywords_with_colon(ctx);
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if let Some(hir::Adt::Enum(e)) =
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ctx.expected_type.as_ref().and_then(|ty| ty.strip_references().as_adt())
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{
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super::enum_variants_with_paths(acc, ctx, e, |acc, ctx, variant, path| {
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acc.add_qualified_enum_variant(ctx, variant, path)
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});
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}
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ctx.process_all_names(&mut |name, def| {
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use hir::{GenericParam::*, ModuleDef::*};
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let add_resolution = match def {
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ScopeDef::GenericParam(LifetimeParam(_)) | ScopeDef::Label(_) => false,
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// Don't suggest attribute macros and derives.
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ScopeDef::ModuleDef(Macro(mac)) => mac.is_fn_like(ctx.db),
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_ => true,
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};
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if add_resolution {
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acc.add_resolution(ctx, name, def);
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}
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});
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}
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}
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}
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