//! This module uses a bit of static metadata to provide completions
//! for built-in attributes.
-use itertools::Itertools;
-use rustc_hash::FxHashSet;
-use syntax::{ast, AstNode, T};
+use hir::HasAttrs;
+use ide_db::helpers::generated_lints::{CLIPPY_LINTS, DEFAULT_LINTS, FEATURES};
+use once_cell::sync::Lazy;
+use rustc_hash::{FxHashMap, FxHashSet};
+use syntax::{algo::non_trivia_sibling, ast, AstNode, Direction, NodeOrToken, SyntaxKind, T};
use crate::{
context::CompletionContext,
- generated_lint_completions::{CLIPPY_LINTS, FEATURES},
item::{CompletionItem, CompletionItemKind, CompletionKind},
Completions,
};
-pub(crate) fn complete_attribute(acc: &mut Completions, ctx: &CompletionContext) -> Option<()> {
- if ctx.mod_declaration_under_caret.is_some() {
- return None;
- }
+mod cfg;
+mod derive;
+mod lint;
+mod repr;
+pub(crate) fn complete_attribute(acc: &mut Completions, ctx: &CompletionContext) -> Option<()> {
let attribute = ctx.attribute_under_caret.as_ref()?;
- match (attribute.path(), attribute.token_tree()) {
- (Some(path), Some(token_tree)) => {
- let path = path.syntax().text();
- if path == "derive" {
- complete_derive(acc, ctx, token_tree)
- } else if path == "feature" {
- complete_lint(acc, ctx, token_tree, FEATURES)
- } else if path == "allow" || path == "warn" || path == "deny" || path == "forbid" {
- complete_lint(acc, ctx, token_tree.clone(), DEFAULT_LINT_COMPLETIONS);
- complete_lint(acc, ctx, token_tree, CLIPPY_LINTS);
+ match (attribute.path().and_then(|p| p.as_single_name_ref()), attribute.token_tree()) {
+ (Some(path), Some(token_tree)) => match path.text().as_str() {
+ "derive" => derive::complete_derive(acc, ctx, token_tree),
+ "repr" => repr::complete_repr(acc, ctx, token_tree),
+ "feature" => lint::complete_lint(acc, ctx, token_tree, FEATURES),
+ "allow" | "warn" | "deny" | "forbid" => {
+ lint::complete_lint(acc, ctx, token_tree.clone(), DEFAULT_LINTS);
+ lint::complete_lint(acc, ctx, token_tree, CLIPPY_LINTS);
}
- }
- (_, Some(_token_tree)) => {}
- _ => complete_attribute_start(acc, ctx, attribute),
+ "cfg" => {
+ cfg::complete_cfg(acc, ctx);
+ }
+ _ => (),
+ },
+ (None, Some(_)) => (),
+ _ => complete_new_attribute(acc, ctx, attribute),
}
Some(())
}
-fn complete_attribute_start(acc: &mut Completions, ctx: &CompletionContext, attribute: &ast::Attr) {
- for attr_completion in ATTRIBUTES {
+fn complete_new_attribute(acc: &mut Completions, ctx: &CompletionContext, attribute: &ast::Attr) {
+ let is_inner = attribute.kind() == ast::AttrKind::Inner;
+ let attribute_annotated_item_kind =
+ attribute.syntax().parent().map(|it| it.kind()).filter(|_| {
+ is_inner
+ // If we got nothing coming after the attribute it could be anything so filter it the kind out
+ || non_trivia_sibling(attribute.syntax().clone().into(), Direction::Next).is_some()
+ });
+ let attributes = attribute_annotated_item_kind.and_then(|kind| {
+ if ast::Expr::can_cast(kind) {
+ Some(EXPR_ATTRIBUTES)
+ } else {
+ KIND_TO_ATTRIBUTES.get(&kind).copied()
+ }
+ });
+
+ let add_completion = |attr_completion: &AttrCompletion| {
let mut item = CompletionItem::new(
CompletionKind::Attribute,
ctx.source_range(),
attr_completion.label,
- )
- .kind(CompletionItemKind::Attribute);
+ );
+ item.kind(CompletionItemKind::Attribute);
if let Some(lookup) = attr_completion.lookup {
- item = item.lookup_by(lookup);
+ item.lookup_by(lookup);
}
if let Some((snippet, cap)) = attr_completion.snippet.zip(ctx.config.snippet_cap) {
- item = item.insert_snippet(cap, snippet);
+ item.insert_snippet(cap, snippet);
}
- if attribute.kind() == ast::AttrKind::Inner || !attr_completion.prefer_inner {
- acc.add(item.build());
+ if is_inner || !attr_completion.prefer_inner {
+ item.add_to(acc);
}
+ };
+
+ match attributes {
+ Some(applicable) => applicable
+ .iter()
+ .flat_map(|name| ATTRIBUTES.binary_search_by(|attr| attr.key().cmp(name)).ok())
+ .flat_map(|idx| ATTRIBUTES.get(idx))
+ .for_each(add_completion),
+ None if is_inner => ATTRIBUTES.iter().for_each(add_completion),
+ None => ATTRIBUTES.iter().filter(|compl| !compl.prefer_inner).for_each(add_completion),
}
+
+ // FIXME: write a test for this when we can
+ ctx.scope.process_all_names(&mut |name, scope_def| {
+ if let hir::ScopeDef::MacroDef(mac) = scope_def {
+ if mac.kind() == hir::MacroKind::Attr {
+ let mut item = CompletionItem::new(
+ CompletionKind::Attribute,
+ ctx.source_range(),
+ name.to_string(),
+ );
+ item.kind(CompletionItemKind::Attribute);
+ if let Some(docs) = mac.docs(ctx.sema.db) {
+ item.documentation(docs);
+ }
+ item.add_to(acc);
+ }
+ }
+ });
}
struct AttrCompletion {
}
impl AttrCompletion {
+ fn key(&self) -> &'static str {
+ self.lookup.unwrap_or(self.label)
+ }
+
const fn prefer_inner(self) -> AttrCompletion {
AttrCompletion { prefer_inner: true, ..self }
}
AttrCompletion { label, lookup, snippet, prefer_inner: false }
}
-/// https://doc.rust-lang.org/reference/attributes.html#built-in-attributes-index
+macro_rules! attrs {
+ // attributes applicable to all items
+ [@ { item $($tt:tt)* } {$($acc:tt)*}] => {
+ attrs!(@ { $($tt)* } { $($acc)*, "deprecated", "doc", "dochidden", "docalias", "must_use", "no_mangle" })
+ };
+ // attributes applicable to all adts
+ [@ { adt $($tt:tt)* } {$($acc:tt)*}] => {
+ attrs!(@ { $($tt)* } { $($acc)*, "derive", "repr" })
+ };
+ // attributes applicable to all linkable things aka functions/statics
+ [@ { linkable $($tt:tt)* } {$($acc:tt)*}] => {
+ attrs!(@ { $($tt)* } { $($acc)*, "export_name", "link_name", "link_section" })
+ };
+ // error fallback for nicer error message
+ [@ { $ty:ident $($tt:tt)* } {$($acc:tt)*}] => {
+ compile_error!(concat!("unknown attr subtype ", stringify!($ty)))
+ };
+ // general push down accumulation
+ [@ { $lit:literal $($tt:tt)*} {$($acc:tt)*}] => {
+ attrs!(@ { $($tt)* } { $($acc)*, $lit })
+ };
+ [@ {$($tt:tt)+} {$($tt2:tt)*}] => {
+ compile_error!(concat!("Unexpected input ", stringify!($($tt)+)))
+ };
+ // final output construction
+ [@ {} {$($tt:tt)*}] => { &[$($tt)*] as _ };
+ // starting matcher
+ [$($tt:tt),*] => {
+ attrs!(@ { $($tt)* } { "allow", "cfg", "cfg_attr", "deny", "forbid", "warn" })
+ };
+}
+
+#[rustfmt::skip]
+static KIND_TO_ATTRIBUTES: Lazy<FxHashMap<SyntaxKind, &[&str]>> = Lazy::new(|| {
+ use SyntaxKind::*;
+ std::array::IntoIter::new([
+ (
+ SOURCE_FILE,
+ attrs!(
+ item,
+ "crate_name", "feature", "no_implicit_prelude", "no_main", "no_std",
+ "recursion_limit", "type_length_limit", "windows_subsystem"
+ ),
+ ),
+ (MODULE, attrs!(item, "no_implicit_prelude", "path")),
+ (ITEM_LIST, attrs!(item, "no_implicit_prelude")),
+ (MACRO_RULES, attrs!(item, "macro_export", "macro_use")),
+ (MACRO_DEF, attrs!(item)),
+ (EXTERN_CRATE, attrs!(item, "macro_use", "no_link")),
+ (USE, attrs!(item)),
+ (TYPE_ALIAS, attrs!(item)),
+ (STRUCT, attrs!(item, adt, "non_exhaustive")),
+ (ENUM, attrs!(item, adt, "non_exhaustive")),
+ (UNION, attrs!(item, adt)),
+ (CONST, attrs!(item)),
+ (
+ FN,
+ attrs!(
+ item, linkable,
+ "cold", "ignore", "inline", "must_use", "panic_handler", "proc_macro",
+ "proc_macro_derive", "proc_macro_attribute", "should_panic", "target_feature",
+ "test", "track_caller"
+ ),
+ ),
+ (STATIC, attrs!(item, linkable, "global_allocator", "used")),
+ (TRAIT, attrs!(item, "must_use")),
+ (IMPL, attrs!(item, "automatically_derived")),
+ (ASSOC_ITEM_LIST, attrs!(item)),
+ (EXTERN_BLOCK, attrs!(item, "link")),
+ (EXTERN_ITEM_LIST, attrs!(item, "link")),
+ (MACRO_CALL, attrs!()),
+ (SELF_PARAM, attrs!()),
+ (PARAM, attrs!()),
+ (RECORD_FIELD, attrs!()),
+ (VARIANT, attrs!("non_exhaustive")),
+ (TYPE_PARAM, attrs!()),
+ (CONST_PARAM, attrs!()),
+ (LIFETIME_PARAM, attrs!()),
+ (LET_STMT, attrs!()),
+ (EXPR_STMT, attrs!()),
+ (LITERAL, attrs!()),
+ (RECORD_EXPR_FIELD_LIST, attrs!()),
+ (RECORD_EXPR_FIELD, attrs!()),
+ (MATCH_ARM_LIST, attrs!()),
+ (MATCH_ARM, attrs!()),
+ (IDENT_PAT, attrs!()),
+ (RECORD_PAT_FIELD, attrs!()),
+ ])
+ .collect()
+});
+const EXPR_ATTRIBUTES: &[&str] = attrs!();
+
+/// <https://doc.rust-lang.org/reference/attributes.html#built-in-attributes-index>
+// Keep these sorted for the binary search!
const ATTRIBUTES: &[AttrCompletion] = &[
attr("allow(…)", Some("allow"), Some("allow(${0:lint})")),
attr("automatically_derived", None, None),
- attr("cfg_attr(…)", Some("cfg_attr"), Some("cfg_attr(${1:predicate}, ${0:attr})")),
attr("cfg(…)", Some("cfg"), Some("cfg(${0:predicate})")),
+ attr("cfg_attr(…)", Some("cfg_attr"), Some("cfg_attr(${1:predicate}, ${0:attr})")),
attr("cold", None, None),
attr(r#"crate_name = """#, Some("crate_name"), Some(r#"crate_name = "${0:crate_name}""#))
.prefer_inner(),
attr("deny(…)", Some("deny"), Some("deny(${0:lint})")),
attr(r#"deprecated"#, Some("deprecated"), Some(r#"deprecated"#)),
attr("derive(…)", Some("derive"), Some(r#"derive(${0:Debug})"#)),
+ attr(r#"doc = "…""#, Some("doc"), Some(r#"doc = "${0:docs}""#)),
+ attr(r#"doc(alias = "…")"#, Some("docalias"), Some(r#"doc(alias = "${0:docs}")"#)),
+ attr(r#"doc(hidden)"#, Some("dochidden"), Some(r#"doc(hidden)"#)),
attr(
r#"export_name = "…""#,
Some("export_name"),
Some(r#"export_name = "${0:exported_symbol_name}""#),
),
- attr(r#"doc(alias = "…")"#, Some("docalias"), Some(r#"doc(alias = "${0:docs}")"#)),
- attr(r#"doc = "…""#, Some("doc"), Some(r#"doc = "${0:docs}""#)),
- attr(r#"doc(hidden)"#, Some("dochidden"), Some(r#"doc(hidden)"#)),
attr("feature(…)", Some("feature"), Some("feature(${0:flag})")).prefer_inner(),
attr("forbid(…)", Some("forbid"), Some("forbid(${0:lint})")),
- // FIXME: resolve through macro resolution?
- attr("global_allocator", None, None).prefer_inner(),
+ attr("global_allocator", None, None),
attr(r#"ignore = "…""#, Some("ignore"), Some(r#"ignore = "${0:reason}""#)),
attr("inline", Some("inline"), Some("inline")),
attr("link", None, None),
attr("macro_export", None, None),
attr("macro_use", None, None),
attr(r#"must_use"#, Some("must_use"), Some(r#"must_use"#)),
- attr("no_link", None, None).prefer_inner(),
attr("no_implicit_prelude", None, None).prefer_inner(),
+ attr("no_link", None, None).prefer_inner(),
attr("no_main", None, None).prefer_inner(),
attr("no_mangle", None, None),
attr("no_std", None, None).prefer_inner(),
attr("non_exhaustive", None, None),
- attr("panic_handler", None, None).prefer_inner(),
+ attr("panic_handler", None, None),
attr(r#"path = "…""#, Some("path"), Some(r#"path ="${0:path}""#)),
attr("proc_macro", None, None),
attr("proc_macro_attribute", None, None),
.prefer_inner(),
];
-fn complete_derive(acc: &mut Completions, ctx: &CompletionContext, derive_input: ast::TokenTree) {
- if let Ok(existing_derives) = parse_comma_sep_input(derive_input) {
- for derive_completion in DEFAULT_DERIVE_COMPLETIONS
- .iter()
- .filter(|completion| !existing_derives.contains(completion.label))
- {
- let mut components = vec![derive_completion.label];
- components.extend(
- derive_completion
- .dependencies
- .iter()
- .filter(|&&dependency| !existing_derives.contains(dependency)),
- );
- let lookup = components.join(", ");
- let label = components.iter().rev().join(", ");
- CompletionItem::new(CompletionKind::Attribute, ctx.source_range(), label)
- .lookup_by(lookup)
- .kind(CompletionItemKind::Attribute)
- .add_to(acc)
+fn parse_comma_sep_input(derive_input: ast::TokenTree) -> Option<FxHashSet<String>> {
+ let (l_paren, r_paren) = derive_input.l_paren_token().zip(derive_input.r_paren_token())?;
+ let mut input_derives = FxHashSet::default();
+ let mut tokens = derive_input
+ .syntax()
+ .children_with_tokens()
+ .filter_map(NodeOrToken::into_token)
+ .skip_while(|token| token != &l_paren)
+ .skip(1)
+ .take_while(|token| token != &r_paren)
+ .peekable();
+ let mut input = String::new();
+ while tokens.peek().is_some() {
+ for token in tokens.by_ref().take_while(|t| t.kind() != T![,]) {
+ input.push_str(token.text());
}
- for custom_derive_name in get_derive_names_in_scope(ctx).difference(&existing_derives) {
- CompletionItem::new(CompletionKind::Attribute, ctx.source_range(), custom_derive_name)
- .kind(CompletionItemKind::Attribute)
- .add_to(acc)
+ if !input.is_empty() {
+ input_derives.insert(input.trim().to_owned());
}
- }
-}
-fn complete_lint(
- acc: &mut Completions,
- ctx: &CompletionContext,
- derive_input: ast::TokenTree,
- lints_completions: &[LintCompletion],
-) {
- if let Ok(existing_lints) = parse_comma_sep_input(derive_input) {
- for lint_completion in lints_completions
- .into_iter()
- .filter(|completion| !existing_lints.contains(completion.label))
- {
- CompletionItem::new(
- CompletionKind::Attribute,
- ctx.source_range(),
- lint_completion.label,
- )
- .kind(CompletionItemKind::Attribute)
- .detail(lint_completion.description)
- .add_to(acc)
- }
+ input.clear();
}
+
+ Some(input_derives)
}
-fn parse_comma_sep_input(derive_input: ast::TokenTree) -> Result<FxHashSet<String>, ()> {
- match (derive_input.left_delimiter_token(), derive_input.right_delimiter_token()) {
- (Some(left_paren), Some(right_paren))
- if left_paren.kind() == T!['('] && right_paren.kind() == T![')'] =>
- {
- let mut input_derives = FxHashSet::default();
- let mut current_derive = String::new();
- for token in derive_input
- .syntax()
- .children_with_tokens()
- .filter_map(|token| token.into_token())
- .skip_while(|token| token != &left_paren)
- .skip(1)
- .take_while(|token| token != &right_paren)
- {
- if T![,] == token.kind() {
- if !current_derive.is_empty() {
- input_derives.insert(current_derive);
- current_derive = String::new();
- }
- } else {
- current_derive.push_str(token.text().trim());
- }
- }
+#[cfg(test)]
+mod tests {
+ use super::*;
- if !current_derive.is_empty() {
- input_derives.insert(current_derive);
- }
- Ok(input_derives)
- }
- _ => Err(()),
- }
-}
+ use expect_test::{expect, Expect};
-fn get_derive_names_in_scope(ctx: &CompletionContext) -> FxHashSet<String> {
- let mut result = FxHashSet::default();
- ctx.scope.process_all_names(&mut |name, scope_def| {
- if let hir::ScopeDef::MacroDef(mac) = scope_def {
- if mac.is_derive_macro() {
- result.insert(name.to_string());
- }
- }
- });
- result
-}
+ use crate::tests::completion_list;
-struct DeriveCompletion {
- label: &'static str,
- dependencies: &'static [&'static str],
-}
+ #[test]
+ fn attributes_are_sorted() {
+ let mut attrs = ATTRIBUTES.iter().map(|attr| attr.key());
+ let mut prev = attrs.next().unwrap();
-/// Standard Rust derives and the information about their dependencies
-/// (the dependencies are needed so that the main derive don't break the compilation when added)
-const DEFAULT_DERIVE_COMPLETIONS: &[DeriveCompletion] = &[
- DeriveCompletion { label: "Clone", dependencies: &[] },
- DeriveCompletion { label: "Copy", dependencies: &["Clone"] },
- DeriveCompletion { label: "Debug", dependencies: &[] },
- DeriveCompletion { label: "Default", dependencies: &[] },
- DeriveCompletion { label: "Hash", dependencies: &[] },
- DeriveCompletion { label: "PartialEq", dependencies: &[] },
- DeriveCompletion { label: "Eq", dependencies: &["PartialEq"] },
- DeriveCompletion { label: "PartialOrd", dependencies: &["PartialEq"] },
- DeriveCompletion { label: "Ord", dependencies: &["PartialOrd", "Eq", "PartialEq"] },
-];
+ attrs.for_each(|next| {
+ assert!(
+ prev < next,
+ r#"ATTRIBUTES array is not sorted, "{}" should come after "{}""#,
+ prev,
+ next
+ );
+ prev = next;
+ });
+ }
-pub(crate) struct LintCompletion {
- pub(crate) label: &'static str,
- pub(crate) description: &'static str,
-}
+ fn check(ra_fixture: &str, expect: Expect) {
+ let actual = completion_list(ra_fixture);
+ expect.assert_eq(&actual);
+ }
-#[rustfmt::skip]
-const DEFAULT_LINT_COMPLETIONS: &[LintCompletion] = &[
- LintCompletion { label: "absolute_paths_not_starting_with_crate", description: r#"fully qualified paths that start with a module name instead of `crate`, `self`, or an extern crate name"# },
- LintCompletion { label: "anonymous_parameters", description: r#"detects anonymous parameters"# },
- LintCompletion { label: "box_pointers", description: r#"use of owned (Box type) heap memory"# },
- LintCompletion { label: "deprecated_in_future", description: r#"detects use of items that will be deprecated in a future version"# },
- LintCompletion { label: "elided_lifetimes_in_paths", description: r#"hidden lifetime parameters in types are deprecated"# },
- LintCompletion { label: "explicit_outlives_requirements", description: r#"outlives requirements can be inferred"# },
- LintCompletion { label: "indirect_structural_match", description: r#"pattern with const indirectly referencing non-structural-match type"# },
- LintCompletion { label: "keyword_idents", description: r#"detects edition keywords being used as an identifier"# },
- LintCompletion { label: "macro_use_extern_crate", description: r#"the `#[macro_use]` attribute is now deprecated in favor of using macros via the module system"# },
- LintCompletion { label: "meta_variable_misuse", description: r#"possible meta-variable misuse at macro definition"# },
- LintCompletion { label: "missing_copy_implementations", description: r#"detects potentially-forgotten implementations of `Copy`"# },
- LintCompletion { label: "missing_crate_level_docs", description: r#"detects crates with no crate-level documentation"# },
- LintCompletion { label: "missing_debug_implementations", description: r#"detects missing implementations of Debug"# },
- LintCompletion { label: "missing_docs", description: r#"detects missing documentation for public members"# },
- LintCompletion { label: "missing_doc_code_examples", description: r#"detects publicly-exported items without code samples in their documentation"# },
- LintCompletion { label: "non_ascii_idents", description: r#"detects non-ASCII identifiers"# },
- LintCompletion { label: "private_doc_tests", description: r#"detects code samples in docs of private items not documented by rustdoc"# },
- LintCompletion { label: "single_use_lifetimes", description: r#"detects lifetime parameters that are only used once"# },
- LintCompletion { label: "trivial_casts", description: r#"detects trivial casts which could be removed"# },
- LintCompletion { label: "trivial_numeric_casts", description: r#"detects trivial casts of numeric types which could be removed"# },
- LintCompletion { label: "unaligned_references", description: r#"detects unaligned references to fields of packed structs"# },
- LintCompletion { label: "unreachable_pub", description: r#"`pub` items not reachable from crate root"# },
- LintCompletion { label: "unsafe_code", description: r#"usage of `unsafe` code"# },
- LintCompletion { label: "unsafe_op_in_unsafe_fn", description: r#"unsafe operations in unsafe functions without an explicit unsafe block are deprecated"# },
- LintCompletion { label: "unstable_features", description: r#"enabling unstable features (deprecated. do not use)"# },
- LintCompletion { label: "unused_crate_dependencies", description: r#"crate dependencies that are never used"# },
- LintCompletion { label: "unused_extern_crates", description: r#"extern crates that are never used"# },
- LintCompletion { label: "unused_import_braces", description: r#"unnecessary braces around an imported item"# },
- LintCompletion { label: "unused_lifetimes", description: r#"detects lifetime parameters that are never used"# },
- LintCompletion { label: "unused_qualifications", description: r#"detects unnecessarily qualified names"# },
- LintCompletion { label: "unused_results", description: r#"unused result of an expression in a statement"# },
- LintCompletion { label: "variant_size_differences", description: r#"detects enums with widely varying variant sizes"# },
- LintCompletion { label: "array_into_iter", description: r#"detects calling `into_iter` on arrays"# },
- LintCompletion { label: "asm_sub_register", description: r#"using only a subset of a register for inline asm inputs"# },
- LintCompletion { label: "bare_trait_objects", description: r#"suggest using `dyn Trait` for trait objects"# },
- LintCompletion { label: "bindings_with_variant_name", description: r#"detects pattern bindings with the same name as one of the matched variants"# },
- LintCompletion { label: "cenum_impl_drop_cast", description: r#"a C-like enum implementing Drop is cast"# },
- LintCompletion { label: "clashing_extern_declarations", description: r#"detects when an extern fn has been declared with the same name but different types"# },
- LintCompletion { label: "coherence_leak_check", description: r#"distinct impls distinguished only by the leak-check code"# },
- LintCompletion { label: "confusable_idents", description: r#"detects visually confusable pairs between identifiers"# },
- LintCompletion { label: "dead_code", description: r#"detect unused, unexported items"# },
- LintCompletion { label: "deprecated", description: r#"detects use of deprecated items"# },
- LintCompletion { label: "ellipsis_inclusive_range_patterns", description: r#"`...` range patterns are deprecated"# },
- LintCompletion { label: "exported_private_dependencies", description: r#"public interface leaks type from a private dependency"# },
- LintCompletion { label: "illegal_floating_point_literal_pattern", description: r#"floating-point literals cannot be used in patterns"# },
- LintCompletion { label: "improper_ctypes", description: r#"proper use of libc types in foreign modules"# },
- LintCompletion { label: "improper_ctypes_definitions", description: r#"proper use of libc types in foreign item definitions"# },
- LintCompletion { label: "incomplete_features", description: r#"incomplete features that may function improperly in some or all cases"# },
- LintCompletion { label: "inline_no_sanitize", description: r#"detects incompatible use of `#[inline(always)]` and `#[no_sanitize(...)]`"# },
- LintCompletion { label: "intra_doc_link_resolution_failure", description: r#"failures in resolving intra-doc link targets"# },
- LintCompletion { label: "invalid_codeblock_attributes", description: r#"codeblock attribute looks a lot like a known one"# },
- LintCompletion { label: "invalid_value", description: r#"an invalid value is being created (such as a NULL reference)"# },
- LintCompletion { label: "irrefutable_let_patterns", description: r#"detects irrefutable patterns in if-let and while-let statements"# },
- LintCompletion { label: "late_bound_lifetime_arguments", description: r#"detects generic lifetime arguments in path segments with late bound lifetime parameters"# },
- LintCompletion { label: "mixed_script_confusables", description: r#"detects Unicode scripts whose mixed script confusables codepoints are solely used"# },
- LintCompletion { label: "mutable_borrow_reservation_conflict", description: r#"reservation of a two-phased borrow conflicts with other shared borrows"# },
- LintCompletion { label: "non_camel_case_types", description: r#"types, variants, traits and type parameters should have camel case names"# },
- LintCompletion { label: "non_shorthand_field_patterns", description: r#"using `Struct { x: x }` instead of `Struct { x }` in a pattern"# },
- LintCompletion { label: "non_snake_case", description: r#"variables, methods, functions, lifetime parameters and modules should have snake case names"# },
- LintCompletion { label: "non_upper_case_globals", description: r#"static constants should have uppercase identifiers"# },
- LintCompletion { label: "no_mangle_generic_items", description: r#"generic items must be mangled"# },
- LintCompletion { label: "overlapping_patterns", description: r#"detects overlapping patterns"# },
- LintCompletion { label: "path_statements", description: r#"path statements with no effect"# },
- LintCompletion { label: "private_in_public", description: r#"detect private items in public interfaces not caught by the old implementation"# },
- LintCompletion { label: "proc_macro_derive_resolution_fallback", description: r#"detects proc macro derives using inaccessible names from parent modules"# },
- LintCompletion { label: "redundant_semicolons", description: r#"detects unnecessary trailing semicolons"# },
- LintCompletion { label: "renamed_and_removed_lints", description: r#"lints that have been renamed or removed"# },
- LintCompletion { label: "safe_packed_borrows", description: r#"safe borrows of fields of packed structs were erroneously allowed"# },
- LintCompletion { label: "stable_features", description: r#"stable features found in `#[feature]` directive"# },
- LintCompletion { label: "trivial_bounds", description: r#"these bounds don't depend on an type parameters"# },
- LintCompletion { label: "type_alias_bounds", description: r#"bounds in type aliases are not enforced"# },
- LintCompletion { label: "tyvar_behind_raw_pointer", description: r#"raw pointer to an inference variable"# },
- LintCompletion { label: "uncommon_codepoints", description: r#"detects uncommon Unicode codepoints in identifiers"# },
- LintCompletion { label: "unconditional_recursion", description: r#"functions that cannot return without calling themselves"# },
- LintCompletion { label: "unknown_lints", description: r#"unrecognized lint attribute"# },
- LintCompletion { label: "unnameable_test_items", description: r#"detects an item that cannot be named being marked as `#[test_case]`"# },
- LintCompletion { label: "unreachable_code", description: r#"detects unreachable code paths"# },
- LintCompletion { label: "unreachable_patterns", description: r#"detects unreachable patterns"# },
- LintCompletion { label: "unstable_name_collisions", description: r#"detects name collision with an existing but unstable method"# },
- LintCompletion { label: "unused_allocation", description: r#"detects unnecessary allocations that can be eliminated"# },
- LintCompletion { label: "unused_assignments", description: r#"detect assignments that will never be read"# },
- LintCompletion { label: "unused_attributes", description: r#"detects attributes that were not used by the compiler"# },
- LintCompletion { label: "unused_braces", description: r#"unnecessary braces around an expression"# },
- LintCompletion { label: "unused_comparisons", description: r#"comparisons made useless by limits of the types involved"# },
- LintCompletion { label: "unused_doc_comments", description: r#"detects doc comments that aren't used by rustdoc"# },
- LintCompletion { label: "unused_features", description: r#"unused features found in crate-level `#[feature]` directives"# },
- LintCompletion { label: "unused_imports", description: r#"imports that are never used"# },
- LintCompletion { label: "unused_labels", description: r#"detects labels that are never used"# },
- LintCompletion { label: "unused_macros", description: r#"detects macros that were not used"# },
- LintCompletion { label: "unused_must_use", description: r#"unused result of a type flagged as `#[must_use]`"# },
- LintCompletion { label: "unused_mut", description: r#"detect mut variables which don't need to be mutable"# },
- LintCompletion { label: "unused_parens", description: r#"`if`, `match`, `while` and `return` do not need parentheses"# },
- LintCompletion { label: "unused_unsafe", description: r#"unnecessary use of an `unsafe` block"# },
- LintCompletion { label: "unused_variables", description: r#"detect variables which are not used in any way"# },
- LintCompletion { label: "warnings", description: r#"mass-change the level for lints which produce warnings"# },
- LintCompletion { label: "where_clauses_object_safety", description: r#"checks the object safety of where clauses"# },
- LintCompletion { label: "while_true", description: r#"suggest using `loop { }` instead of `while true { }`"# },
- LintCompletion { label: "ambiguous_associated_items", description: r#"ambiguous associated items"# },
- LintCompletion { label: "arithmetic_overflow", description: r#"arithmetic operation overflows"# },
- LintCompletion { label: "conflicting_repr_hints", description: r#"conflicts between `#[repr(..)]` hints that were previously accepted and used in practice"# },
- LintCompletion { label: "const_err", description: r#"constant evaluation detected erroneous expression"# },
- LintCompletion { label: "ill_formed_attribute_input", description: r#"ill-formed attribute inputs that were previously accepted and used in practice"# },
- LintCompletion { label: "incomplete_include", description: r#"trailing content in included file"# },
- LintCompletion { label: "invalid_type_param_default", description: r#"type parameter default erroneously allowed in invalid location"# },
- LintCompletion { label: "macro_expanded_macro_exports_accessed_by_absolute_paths", description: r#"macro-expanded `macro_export` macros from the current crate cannot be referred to by absolute paths"# },
- LintCompletion { label: "missing_fragment_specifier", description: r#"detects missing fragment specifiers in unused `macro_rules!` patterns"# },
- LintCompletion { label: "mutable_transmutes", description: r#"mutating transmuted &mut T from &T may cause undefined behavior"# },
- LintCompletion { label: "no_mangle_const_items", description: r#"const items will not have their symbols exported"# },
- LintCompletion { label: "order_dependent_trait_objects", description: r#"trait-object types were treated as different depending on marker-trait order"# },
- LintCompletion { label: "overflowing_literals", description: r#"literal out of range for its type"# },
- LintCompletion { label: "patterns_in_fns_without_body", description: r#"patterns in functions without body were erroneously allowed"# },
- LintCompletion { label: "pub_use_of_private_extern_crate", description: r#"detect public re-exports of private extern crates"# },
- LintCompletion { label: "soft_unstable", description: r#"a feature gate that doesn't break dependent crates"# },
- LintCompletion { label: "unconditional_panic", description: r#"operation will cause a panic at runtime"# },
- LintCompletion { label: "unknown_crate_types", description: r#"unknown crate type found in `#[crate_type]` directive"# },
-];
+ #[test]
+ fn test_attribute_completion_inside_nested_attr() {
+ check(r#"#[cfg($0)]"#, expect![[]])
+ }
-#[cfg(test)]
-mod tests {
- use expect_test::{expect, Expect};
+ #[test]
+ fn test_attribute_completion_with_existing_attr() {
+ check(
+ r#"#[no_mangle] #[$0] mcall!();"#,
+ expect![[r#"
+ at allow(…)
+ at cfg(…)
+ at cfg_attr(…)
+ at deny(…)
+ at forbid(…)
+ at warn(…)
+ "#]],
+ )
+ }
- use crate::{test_utils::completion_list, CompletionKind};
+ #[test]
+ fn complete_attribute_on_source_file() {
+ check(
+ r#"#![$0]"#,
+ expect![[r#"
+ at allow(…)
+ at cfg(…)
+ at cfg_attr(…)
+ at deny(…)
+ at forbid(…)
+ at warn(…)
+ at deprecated
+ at doc = "…"
+ at doc(hidden)
+ at doc(alias = "…")
+ at must_use
+ at no_mangle
+ at crate_name = ""
+ at feature(…)
+ at no_implicit_prelude
+ at no_main
+ at no_std
+ at recursion_limit = …
+ at type_length_limit = …
+ at windows_subsystem = "…"
+ "#]],
+ );
+ }
- fn check(ra_fixture: &str, expect: Expect) {
- let actual = completion_list(ra_fixture, CompletionKind::Attribute);
- expect.assert_eq(&actual);
+ #[test]
+ fn complete_attribute_on_module() {
+ check(
+ r#"#[$0] mod foo;"#,
+ expect![[r#"
+ at allow(…)
+ at cfg(…)
+ at cfg_attr(…)
+ at deny(…)
+ at forbid(…)
+ at warn(…)
+ at deprecated
+ at doc = "…"
+ at doc(hidden)
+ at doc(alias = "…")
+ at must_use
+ at no_mangle
+ at path = "…"
+ "#]],
+ );
+ check(
+ r#"mod foo {#![$0]}"#,
+ expect![[r#"
+ at allow(…)
+ at cfg(…)
+ at cfg_attr(…)
+ at deny(…)
+ at forbid(…)
+ at warn(…)
+ at deprecated
+ at doc = "…"
+ at doc(hidden)
+ at doc(alias = "…")
+ at must_use
+ at no_mangle
+ at no_implicit_prelude
+ "#]],
+ );
}
#[test]
- fn empty_derive_completion() {
+ fn complete_attribute_on_macro_rules() {
check(
- r#"
-#[derive($0)]
-struct Test {}
- "#,
+ r#"#[$0] macro_rules! foo {}"#,
expect![[r#"
- at Clone
- at Clone, Copy
- at Debug
- at Default
- at Hash
- at PartialEq
- at PartialEq, Eq
- at PartialEq, PartialOrd
- at PartialEq, Eq, PartialOrd, Ord
+ at allow(…)
+ at cfg(…)
+ at cfg_attr(…)
+ at deny(…)
+ at forbid(…)
+ at warn(…)
+ at deprecated
+ at doc = "…"
+ at doc(hidden)
+ at doc(alias = "…")
+ at must_use
+ at no_mangle
+ at macro_export
+ at macro_use
"#]],
);
}
#[test]
- fn no_completion_for_incorrect_derive() {
+ fn complete_attribute_on_macro_def() {
check(
- r#"
-#[derive{$0)]
-struct Test {}
-"#,
- expect![[r#""#]],
- )
+ r#"#[$0] macro foo {}"#,
+ expect![[r#"
+ at allow(…)
+ at cfg(…)
+ at cfg_attr(…)
+ at deny(…)
+ at forbid(…)
+ at warn(…)
+ at deprecated
+ at doc = "…"
+ at doc(hidden)
+ at doc(alias = "…")
+ at must_use
+ at no_mangle
+ "#]],
+ );
}
#[test]
- fn derive_with_input_completion() {
+ fn complete_attribute_on_extern_crate() {
check(
- r#"
-#[derive(serde::Serialize, PartialEq, $0)]
-struct Test {}
-"#,
+ r#"#[$0] extern crate foo;"#,
expect![[r#"
- at Clone
- at Clone, Copy
- at Debug
- at Default
- at Hash
- at Eq
- at PartialOrd
- at Eq, PartialOrd, Ord
+ at allow(…)
+ at cfg(…)
+ at cfg_attr(…)
+ at deny(…)
+ at forbid(…)
+ at warn(…)
+ at deprecated
+ at doc = "…"
+ at doc(hidden)
+ at doc(alias = "…")
+ at must_use
+ at no_mangle
+ at macro_use
"#]],
- )
+ );
}
#[test]
- fn test_attribute_completion() {
+ fn complete_attribute_on_use() {
check(
- r#"#[$0]"#,
+ r#"#[$0] use foo;"#,
expect![[r#"
at allow(…)
- at automatically_derived
+ at cfg(…)
at cfg_attr(…)
+ at deny(…)
+ at forbid(…)
+ at warn(…)
+ at deprecated
+ at doc = "…"
+ at doc(hidden)
+ at doc(alias = "…")
+ at must_use
+ at no_mangle
+ "#]],
+ );
+ }
+
+ #[test]
+ fn complete_attribute_on_type_alias() {
+ check(
+ r#"#[$0] type foo = ();"#,
+ expect![[r#"
+ at allow(…)
at cfg(…)
- at cold
+ at cfg_attr(…)
+ at deny(…)
+ at forbid(…)
+ at warn(…)
+ at deprecated
+ at doc = "…"
+ at doc(hidden)
+ at doc(alias = "…")
+ at must_use
+ at no_mangle
+ "#]],
+ );
+ }
+
+ #[test]
+ fn complete_attribute_on_struct() {
+ check(
+ r#"#[$0] struct Foo;"#,
+ expect![[r#"
+ at allow(…)
+ at cfg(…)
+ at cfg_attr(…)
at deny(…)
+ at forbid(…)
+ at warn(…)
at deprecated
+ at doc = "…"
+ at doc(hidden)
+ at doc(alias = "…")
+ at must_use
+ at no_mangle
at derive(…)
- at export_name = "…"
+ at repr(…)
+ at non_exhaustive
+ "#]],
+ );
+ }
+
+ #[test]
+ fn complete_attribute_on_enum() {
+ check(
+ r#"#[$0] enum Foo {}"#,
+ expect![[r#"
+ at allow(…)
+ at cfg(…)
+ at cfg_attr(…)
+ at deny(…)
+ at forbid(…)
+ at warn(…)
+ at deprecated
+ at doc = "…"
+ at doc(hidden)
at doc(alias = "…")
+ at must_use
+ at no_mangle
+ at derive(…)
+ at repr(…)
+ at non_exhaustive
+ "#]],
+ );
+ }
+
+ #[test]
+ fn complete_attribute_on_const() {
+ check(
+ r#"#[$0] const FOO: () = ();"#,
+ expect![[r#"
+ at allow(…)
+ at cfg(…)
+ at cfg_attr(…)
+ at deny(…)
+ at forbid(…)
+ at warn(…)
+ at deprecated
at doc = "…"
at doc(hidden)
+ at doc(alias = "…")
+ at must_use
+ at no_mangle
+ "#]],
+ );
+ }
+
+ #[test]
+ fn complete_attribute_on_static() {
+ check(
+ r#"#[$0] static FOO: () = ()"#,
+ expect![[r#"
+ at allow(…)
+ at cfg(…)
+ at cfg_attr(…)
+ at deny(…)
at forbid(…)
- at ignore = "…"
- at inline
- at link
+ at warn(…)
+ at deprecated
+ at doc = "…"
+ at doc(hidden)
+ at doc(alias = "…")
+ at must_use
+ at no_mangle
+ at export_name = "…"
at link_name = "…"
at link_section = "…"
- at macro_export
- at macro_use
+ at global_allocator
+ at used
+ "#]],
+ );
+ }
+
+ #[test]
+ fn complete_attribute_on_trait() {
+ check(
+ r#"#[$0] trait Foo {}"#,
+ expect![[r#"
+ at allow(…)
+ at cfg(…)
+ at cfg_attr(…)
+ at deny(…)
+ at forbid(…)
+ at warn(…)
+ at deprecated
+ at doc = "…"
+ at doc(hidden)
+ at doc(alias = "…")
+ at must_use
+ at no_mangle
+ at must_use
+ "#]],
+ );
+ }
+
+ #[test]
+ fn complete_attribute_on_impl() {
+ check(
+ r#"#[$0] impl () {}"#,
+ expect![[r#"
+ at allow(…)
+ at cfg(…)
+ at cfg_attr(…)
+ at deny(…)
+ at forbid(…)
+ at warn(…)
+ at deprecated
+ at doc = "…"
+ at doc(hidden)
+ at doc(alias = "…")
+ at must_use
+ at no_mangle
+ at automatically_derived
+ "#]],
+ );
+ check(
+ r#"impl () {#![$0]}"#,
+ expect![[r#"
+ at allow(…)
+ at cfg(…)
+ at cfg_attr(…)
+ at deny(…)
+ at forbid(…)
+ at warn(…)
+ at deprecated
+ at doc = "…"
+ at doc(hidden)
+ at doc(alias = "…")
+ at must_use
+ at no_mangle
+ "#]],
+ );
+ }
+
+ #[test]
+ fn complete_attribute_on_extern_block() {
+ check(
+ r#"#[$0] extern {}"#,
+ expect![[r#"
+ at allow(…)
+ at cfg(…)
+ at cfg_attr(…)
+ at deny(…)
+ at forbid(…)
+ at warn(…)
+ at deprecated
+ at doc = "…"
+ at doc(hidden)
+ at doc(alias = "…")
at must_use
at no_mangle
+ at link
+ "#]],
+ );
+ check(
+ r#"extern {#![$0]}"#,
+ expect![[r#"
+ at allow(…)
+ at cfg(…)
+ at cfg_attr(…)
+ at deny(…)
+ at forbid(…)
+ at warn(…)
+ at deprecated
+ at doc = "…"
+ at doc(hidden)
+ at doc(alias = "…")
+ at must_use
+ at no_mangle
+ at link
+ "#]],
+ );
+ }
+
+ #[test]
+ fn complete_attribute_on_variant() {
+ check(
+ r#"enum Foo { #[$0] Bar }"#,
+ expect![[r#"
+ at allow(…)
+ at cfg(…)
+ at cfg_attr(…)
+ at deny(…)
+ at forbid(…)
+ at warn(…)
at non_exhaustive
- at path = "…"
+ "#]],
+ );
+ }
+
+ #[test]
+ fn complete_attribute_on_fn() {
+ check(
+ r#"#[$0] fn main() {}"#,
+ expect![[r#"
+ at allow(…)
+ at cfg(…)
+ at cfg_attr(…)
+ at deny(…)
+ at forbid(…)
+ at warn(…)
+ at deprecated
+ at doc = "…"
+ at doc(hidden)
+ at doc(alias = "…")
+ at must_use
+ at no_mangle
+ at export_name = "…"
+ at link_name = "…"
+ at link_section = "…"
+ at cold
+ at ignore = "…"
+ at inline
+ at must_use
+ at panic_handler
at proc_macro
- at proc_macro_attribute
at proc_macro_derive(…)
- at repr(…)
+ at proc_macro_attribute
at should_panic
at target_feature = "…"
at test
at track_caller
- at used
- at warn(…)
"#]],
- )
+ );
}
#[test]
- fn test_attribute_completion_inside_nested_attr() {
- check(r#"#[cfg($0)]"#, expect![[]])
+ fn complete_attribute_on_expr() {
+ cov_mark::check!(no_keyword_completion_in_attr_of_expr);
+ check(
+ r#"fn main() { #[$0] foo() }"#,
+ expect![[r#"
+ at allow(…)
+ at cfg(…)
+ at cfg_attr(…)
+ at deny(…)
+ at forbid(…)
+ at warn(…)
+ "#]],
+ );
}
#[test]
- fn test_inner_attribute_completion() {
+ fn complete_attribute_in_source_file_end() {
check(
- r"#![$0]",
+ r#"#[$0]"#,
expect![[r#"
at allow(…)
at automatically_derived
- at cfg_attr(…)
at cfg(…)
+ at cfg_attr(…)
at cold
- at crate_name = ""
at deny(…)
at deprecated
at derive(…)
- at export_name = "…"
- at doc(alias = "…")
at doc = "…"
+ at doc(alias = "…")
at doc(hidden)
- at feature(…)
+ at export_name = "…"
at forbid(…)
at global_allocator
at ignore = "…"
at macro_export
at macro_use
at must_use
- at no_link
- at no_implicit_prelude
- at no_main
at no_mangle
- at no_std
at non_exhaustive
at panic_handler
at path = "…"
at proc_macro
at proc_macro_attribute
at proc_macro_derive(…)
- at recursion_limit = …
at repr(…)
at should_panic
at target_feature = "…"
at test
at track_caller
- at type_length_limit = …
at used
at warn(…)
- at windows_subsystem = "…"
"#]],
);
}
+
+ #[test]
+ fn test_cfg() {
+ check(
+ r#"#[cfg(target_endian = $0"#,
+ expect![[r#"
+ at little
+ at big
+"#]],
+ );
+ }
}
projects / rust.git / blobdiff