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Auto merge of #12899 - Veykril:compl-qualifier, r=Veykril

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fix: Do completions in path qualifier position

Fixes https://github.com/rust-lang/rust-analyzer/issues/12566

Not too happy with the duplication needed for this, but it is what it is. Completions in path qualifiers will have to be filtered properly still, but its better to show too many completions for this than too few for now.
This commit is contained in:
bors 2022-07-28 15:11:24 +00:00
commit 5986d2190f
2 changed files with 119 additions and 86 deletions
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16
crates/ide-completion/src/completions/expr.rs
View file

@ -11,7 +11,14 @@ pub(crate) fn complete_expr_path(
acc: &mut Completions,
ctx: &CompletionContext<'_>,
path_ctx @ PathCompletionCtx { qualified, .. }: &PathCompletionCtx,
&ExprCtx {
expr_ctx: &ExprCtx,
) {
let _p = profile::span("complete_expr_path");
if !ctx.qualifier_ctx.none() {
return;
}
let &ExprCtx {
in_block_expr,
in_loop_body,
after_if_expr,
@ -23,12 +30,7 @@ pub(crate) fn complete_expr_path(
ref impl_,
in_match_guard,
..
}: &ExprCtx,
) {
let _p = profile::span("complete_expr_path");
if !ctx.qualifier_ctx.none() {
return;
}
} = expr_ctx;
let wants_mut_token =
ref_expr_parent.as_ref().map(|it| it.mut_token().is_none()).unwrap_or(false);

131
crates/ide-completion/src/context/analysis.rs
View file

@ -592,7 +592,7 @@ impl<'a> CompletionContext<'a> {
has_call_parens: false,
has_macro_bang: false,
qualified: Qualified::No,
parent: path.parent_path(),
parent: None,
path: path.clone(),
kind: PathKind::Item { kind: ItemListKind::SourceFile },
has_type_args: false,
@ -827,45 +827,11 @@ impl<'a> CompletionContext<'a> {
PathKind::Type { location: location.unwrap_or(TypeLocation::Other) }
};
// Infer the path kind
let parent = path.syntax().parent()?;
let kind = match_ast! {
match parent {
ast::PathType(it) => make_path_kind_type(it.into()),
ast::PathExpr(it) => {
if let Some(p) = it.syntax().parent() {
if ast::ExprStmt::can_cast(p.kind()) {
if let Some(kind) = inbetween_body_and_decl_check(p) {
return Some(make_res(NameRefKind::Keyword(kind)));
}
}
}
path_ctx.has_call_parens = it.syntax().parent().map_or(false, |it| ast::CallExpr::can_cast(it.kind()));
make_path_kind_expr(it.into())
},
ast::TupleStructPat(it) => {
path_ctx.has_call_parens = true;
PathKind::Pat { pat_ctx: pattern_context_for(sema, original_file, it.into())}
},
ast::RecordPat(it) => {
path_ctx.has_call_parens = true;
PathKind::Pat { pat_ctx: pattern_context_for(sema, original_file, it.into())}
},
ast::PathPat(it) => {
PathKind::Pat { pat_ctx: pattern_context_for(sema, original_file, it.into())}
},
ast::MacroCall(it) => {
// A macro call in this position is usually a result of parsing recovery, so check that
if let Some(kind) = inbetween_body_and_decl_check(it.syntax().clone()) {
return Some(make_res(NameRefKind::Keyword(kind)));
}
let mut kind_macro_call = |it: ast::MacroCall| {
path_ctx.has_macro_bang = it.excl_token().is_some();
let parent = it.syntax().parent()?;
// Any path in an item list will be treated as a macro call by the parser
match_ast! {
let kind = match_ast! {
match parent {
ast::MacroExpr(expr) => make_path_kind_expr(expr.into()),
ast::MacroPat(it) => PathKind::Pat { pat_ctx: pattern_context_for(sema, original_file, it.into())},
@ -889,30 +855,95 @@ impl<'a> CompletionContext<'a> {
ast::SourceFile(_) => PathKind::Item { kind: ItemListKind::SourceFile },
_ => return None,
}
}
},
ast::Meta(meta) => {
};
Some(kind)
};
let make_path_kind_attr = |meta: ast::Meta| {
let attr = meta.parent_attr()?;
let kind = attr.kind();
let attached = attr.syntax().parent()?;
let is_trailing_outer_attr = kind != AttrKind::Inner
&& non_trivia_sibling(attr.syntax().clone().into(), syntax::Direction::Next).is_none();
let annotated_item_kind = if is_trailing_outer_attr {
None
} else {
Some(attached.kind())
&& non_trivia_sibling(attr.syntax().clone().into(), syntax::Direction::Next)
.is_none();
let annotated_item_kind =
if is_trailing_outer_attr { None } else { Some(attached.kind()) };
Some(PathKind::Attr { attr_ctx: AttrCtx { kind, annotated_item_kind } })
};
PathKind::Attr {
attr_ctx: AttrCtx {
kind,
annotated_item_kind,
// Infer the path kind
let parent = path.syntax().parent()?;
let kind = match_ast! {
match parent {
ast::PathType(it) => make_path_kind_type(it.into()),
ast::PathExpr(it) => {
if let Some(p) = it.syntax().parent() {
if ast::ExprStmt::can_cast(p.kind()) {
if let Some(kind) = inbetween_body_and_decl_check(p) {
return Some(make_res(NameRefKind::Keyword(kind)));
}
}
}
path_ctx.has_call_parens = it.syntax().parent().map_or(false, |it| ast::CallExpr::can_cast(it.kind()));
make_path_kind_expr(it.into())
},
ast::TupleStructPat(it) => {
path_ctx.has_call_parens = true;
PathKind::Pat { pat_ctx: pattern_context_for(sema, original_file, it.into()) }
},
ast::RecordPat(it) => {
path_ctx.has_call_parens = true;
PathKind::Pat { pat_ctx: pattern_context_for(sema, original_file, it.into()) }
},
ast::PathPat(it) => {
PathKind::Pat { pat_ctx: pattern_context_for(sema, original_file, it.into())}
},
ast::MacroCall(it) => {
// A macro call in this position is usually a result of parsing recovery, so check that
if let Some(kind) = inbetween_body_and_decl_check(it.syntax().clone()) {
return Some(make_res(NameRefKind::Keyword(kind)));
}
kind_macro_call(it)?
},
ast::Meta(meta) => make_path_kind_attr(meta)?,
ast::Visibility(it) => PathKind::Vis { has_in_token: it.in_token().is_some() },
ast::UseTree(_) => PathKind::Use,
// completing inside a qualifier
ast::Path(parent) => {
path_ctx.parent = Some(parent.clone());
let parent = iter::successors(Some(parent), |it| it.parent_path()).last()?.syntax().parent()?;
match_ast! {
match parent {
ast::PathType(it) => make_path_kind_type(it.into()),
ast::PathExpr(it) => {
path_ctx.has_call_parens = it.syntax().parent().map_or(false, |it| ast::CallExpr::can_cast(it.kind()));
make_path_kind_expr(it.into())
},
ast::TupleStructPat(it) => {
path_ctx.has_call_parens = true;
PathKind::Pat { pat_ctx: pattern_context_for(sema, original_file, it.into()) }
},
ast::RecordPat(it) => {
path_ctx.has_call_parens = true;
PathKind::Pat { pat_ctx: pattern_context_for(sema, original_file, it.into()) }
},
ast::PathPat(it) => {
PathKind::Pat { pat_ctx: pattern_context_for(sema, original_file, it.into())}
},
ast::MacroCall(it) => {
kind_macro_call(it)?
},
ast::Meta(meta) => make_path_kind_attr(meta)?,
ast::Visibility(it) => PathKind::Vis { has_in_token: it.in_token().is_some() },
ast::UseTree(_) => PathKind::Use,
_ => return None,
}
}
},
_ => return None,
}
};