mirror of
https://github.com/rust-lang/rust-analyzer
synced 2025-01-25 11:25:06 +00:00
653 lines
38 KiB
Rust
653 lines
38 KiB
Rust
//! Completion for attributes
|
|
//!
|
|
//! This module uses a bit of static metadata to provide completions
|
|
//! for built-in attributes.
|
|
|
|
use rustc_hash::FxHashSet;
|
|
use syntax::{ast, AstNode, SyntaxKind};
|
|
|
|
use crate::completion::{
|
|
completion_context::CompletionContext,
|
|
completion_item::{CompletionItem, CompletionItemKind, CompletionKind, Completions},
|
|
generated_features::FEATURES,
|
|
};
|
|
|
|
pub(super) 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)) if path.to_string() == "derive" => {
|
|
complete_derive(acc, ctx, token_tree)
|
|
}
|
|
(Some(path), Some(token_tree)) if path.to_string() == "feature" => {
|
|
complete_lint(acc, ctx, token_tree, FEATURES)
|
|
}
|
|
(Some(path), Some(token_tree))
|
|
if ["allow", "warn", "deny", "forbid"]
|
|
.iter()
|
|
.any(|lint_level| lint_level == &path.to_string()) =>
|
|
{
|
|
complete_lint(acc, ctx, token_tree, DEFAULT_LINT_COMPLETIONS)
|
|
}
|
|
(_, Some(_token_tree)) => {}
|
|
_ => complete_attribute_start(acc, ctx, attribute),
|
|
}
|
|
Some(())
|
|
}
|
|
|
|
fn complete_attribute_start(acc: &mut Completions, ctx: &CompletionContext, attribute: &ast::Attr) {
|
|
for attr_completion in ATTRIBUTES {
|
|
let mut item = CompletionItem::new(
|
|
CompletionKind::Attribute,
|
|
ctx.source_range(),
|
|
attr_completion.label,
|
|
)
|
|
.kind(CompletionItemKind::Attribute);
|
|
|
|
if let Some(lookup) = attr_completion.lookup {
|
|
item = item.lookup_by(lookup);
|
|
}
|
|
|
|
match (attr_completion.snippet, ctx.config.snippet_cap) {
|
|
(Some(snippet), Some(cap)) => {
|
|
item = item.insert_snippet(cap, snippet);
|
|
}
|
|
_ => {}
|
|
}
|
|
|
|
if attribute.kind() == ast::AttrKind::Inner || !attr_completion.prefer_inner {
|
|
acc.add(item);
|
|
}
|
|
}
|
|
}
|
|
|
|
struct AttrCompletion {
|
|
label: &'static str,
|
|
lookup: Option<&'static str>,
|
|
snippet: Option<&'static str>,
|
|
prefer_inner: bool,
|
|
}
|
|
|
|
impl AttrCompletion {
|
|
const fn prefer_inner(self) -> AttrCompletion {
|
|
AttrCompletion { prefer_inner: true, ..self }
|
|
}
|
|
}
|
|
|
|
const fn attr(
|
|
label: &'static str,
|
|
lookup: Option<&'static str>,
|
|
snippet: Option<&'static str>,
|
|
) -> AttrCompletion {
|
|
AttrCompletion { label, lookup, snippet, prefer_inner: false }
|
|
}
|
|
|
|
const ATTRIBUTES: &[AttrCompletion] = &[
|
|
attr("allow(…)", Some("allow"), Some("allow(${0:lint})")),
|
|
attr("cfg_attr(…)", Some("cfg_attr"), Some("cfg_attr(${1:predicate}, ${0:attr})")),
|
|
attr("cfg(…)", Some("cfg"), Some("cfg(${0:predicate})")),
|
|
attr("deny(…)", Some("deny"), Some("deny(${0:lint})")),
|
|
attr(r#"deprecated = "…""#, Some("deprecated"), Some(r#"deprecated = "${0:reason}""#)),
|
|
attr("derive(…)", Some("derive"), Some(r#"derive(${0:Debug})"#)),
|
|
attr(r#"doc = "…""#, Some("doc"), Some(r#"doc = "${0:docs}""#)),
|
|
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(r#"ignore = "…""#, Some("ignore"), Some(r#"ignore = "${0:reason}""#)),
|
|
attr("inline(…)", Some("inline"), Some("inline(${0:lint})")),
|
|
attr(r#"link_name = "…""#, Some("link_name"), Some(r#"link_name = "${0:symbol_name}""#)),
|
|
attr("link", None, None),
|
|
attr("macro_export", None, None),
|
|
attr("macro_use", None, None),
|
|
attr(r#"must_use = "…""#, Some("must_use"), Some(r#"must_use = "${0:reason}""#)),
|
|
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("path = \"…\"", Some("path"), Some("path =\"${0:path}\"")),
|
|
attr("proc_macro", None, None),
|
|
attr("proc_macro_attribute", None, None),
|
|
attr("proc_macro_derive(…)", Some("proc_macro_derive"), Some("proc_macro_derive(${0:Trait})")),
|
|
attr("recursion_limit = …", Some("recursion_limit"), Some("recursion_limit = ${0:128}"))
|
|
.prefer_inner(),
|
|
attr("repr(…)", Some("repr"), Some("repr(${0:C})")),
|
|
attr(
|
|
"should_panic(…)",
|
|
Some("should_panic"),
|
|
Some(r#"should_panic(expected = "${0:reason}")"#),
|
|
),
|
|
attr(
|
|
r#"target_feature = "…""#,
|
|
Some("target_feature"),
|
|
Some("target_feature = \"${0:feature}\""),
|
|
),
|
|
attr("test", None, None),
|
|
attr("used", None, None),
|
|
attr("warn(…)", Some("warn"), Some("warn(${0:lint})")),
|
|
attr(
|
|
r#"windows_subsystem = "…""#,
|
|
Some("windows_subsystem"),
|
|
Some(r#"windows_subsystem = "${0:subsystem}""#),
|
|
)
|
|
.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
|
|
.into_iter()
|
|
.filter(|completion| !existing_derives.contains(completion.label))
|
|
{
|
|
let mut label = derive_completion.label.to_owned();
|
|
for dependency in derive_completion
|
|
.dependencies
|
|
.into_iter()
|
|
.filter(|&&dependency| !existing_derives.contains(dependency))
|
|
{
|
|
label.push_str(", ");
|
|
label.push_str(dependency);
|
|
}
|
|
acc.add(
|
|
CompletionItem::new(CompletionKind::Attribute, ctx.source_range(), label)
|
|
.kind(CompletionItemKind::Attribute),
|
|
);
|
|
}
|
|
|
|
for custom_derive_name in get_derive_names_in_scope(ctx).difference(&existing_derives) {
|
|
acc.add(
|
|
CompletionItem::new(
|
|
CompletionKind::Attribute,
|
|
ctx.source_range(),
|
|
custom_derive_name,
|
|
)
|
|
.kind(CompletionItemKind::Attribute),
|
|
);
|
|
}
|
|
}
|
|
}
|
|
|
|
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))
|
|
{
|
|
acc.add(
|
|
CompletionItem::new(
|
|
CompletionKind::Attribute,
|
|
ctx.source_range(),
|
|
lint_completion.label,
|
|
)
|
|
.kind(CompletionItemKind::Attribute)
|
|
.detail(lint_completion.description),
|
|
);
|
|
}
|
|
}
|
|
}
|
|
|
|
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() == SyntaxKind::L_PAREN
|
|
&& right_paren.kind() == SyntaxKind::R_PAREN =>
|
|
{
|
|
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 SyntaxKind::COMMA == token.kind() {
|
|
if !current_derive.is_empty() {
|
|
input_derives.insert(current_derive);
|
|
current_derive = String::new();
|
|
}
|
|
} else {
|
|
current_derive.push_str(token.to_string().trim());
|
|
}
|
|
}
|
|
|
|
if !current_derive.is_empty() {
|
|
input_derives.insert(current_derive);
|
|
}
|
|
Ok(input_derives)
|
|
}
|
|
_ => Err(()),
|
|
}
|
|
}
|
|
|
|
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
|
|
}
|
|
|
|
struct DeriveCompletion {
|
|
label: &'static str,
|
|
dependencies: &'static [&'static str],
|
|
}
|
|
|
|
/// 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)
|
|
#[rustfmt::skip]
|
|
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"] },
|
|
];
|
|
|
|
pub(super) struct LintCompletion {
|
|
pub(super) label: &'static str,
|
|
pub(super) description: &'static str,
|
|
}
|
|
|
|
#[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"# },
|
|
];
|
|
|
|
#[cfg(test)]
|
|
mod tests {
|
|
use expect_test::{expect, Expect};
|
|
|
|
use crate::completion::{test_utils::completion_list, CompletionKind};
|
|
|
|
fn check(ra_fixture: &str, expect: Expect) {
|
|
let actual = completion_list(ra_fixture, CompletionKind::Attribute);
|
|
expect.assert_eq(&actual);
|
|
}
|
|
|
|
#[test]
|
|
fn empty_derive_completion() {
|
|
check(
|
|
r#"
|
|
#[derive(<|>)]
|
|
struct Test {}
|
|
"#,
|
|
expect![[r#"
|
|
at Clone
|
|
at Copy, Clone
|
|
at Debug
|
|
at Default
|
|
at Eq, PartialEq
|
|
at Hash
|
|
at Ord, PartialOrd, Eq, PartialEq
|
|
at PartialEq
|
|
at PartialOrd, PartialEq
|
|
"#]],
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn empty_lint_completion() {
|
|
check(
|
|
r#"#[allow(<|>)]"#,
|
|
expect![[r#"
|
|
at absolute_paths_not_starting_with_crate fully qualified paths that start with a module name instead of `crate`, `self`, or an extern crate name
|
|
at ambiguous_associated_items ambiguous associated items
|
|
at anonymous_parameters detects anonymous parameters
|
|
at arithmetic_overflow arithmetic operation overflows
|
|
at array_into_iter detects calling `into_iter` on arrays
|
|
at asm_sub_register using only a subset of a register for inline asm inputs
|
|
at bare_trait_objects suggest using `dyn Trait` for trait objects
|
|
at bindings_with_variant_name detects pattern bindings with the same name as one of the matched variants
|
|
at box_pointers use of owned (Box type) heap memory
|
|
at cenum_impl_drop_cast a C-like enum implementing Drop is cast
|
|
at clashing_extern_declarations detects when an extern fn has been declared with the same name but different types
|
|
at coherence_leak_check distinct impls distinguished only by the leak-check code
|
|
at conflicting_repr_hints conflicts between `#[repr(..)]` hints that were previously accepted and used in practice
|
|
at confusable_idents detects visually confusable pairs between identifiers
|
|
at const_err constant evaluation detected erroneous expression
|
|
at dead_code detect unused, unexported items
|
|
at deprecated detects use of deprecated items
|
|
at deprecated_in_future detects use of items that will be deprecated in a future version
|
|
at elided_lifetimes_in_paths hidden lifetime parameters in types are deprecated
|
|
at ellipsis_inclusive_range_patterns `...` range patterns are deprecated
|
|
at explicit_outlives_requirements outlives requirements can be inferred
|
|
at exported_private_dependencies public interface leaks type from a private dependency
|
|
at ill_formed_attribute_input ill-formed attribute inputs that were previously accepted and used in practice
|
|
at illegal_floating_point_literal_pattern floating-point literals cannot be used in patterns
|
|
at improper_ctypes proper use of libc types in foreign modules
|
|
at improper_ctypes_definitions proper use of libc types in foreign item definitions
|
|
at incomplete_features incomplete features that may function improperly in some or all cases
|
|
at incomplete_include trailing content in included file
|
|
at indirect_structural_match pattern with const indirectly referencing non-structural-match type
|
|
at inline_no_sanitize detects incompatible use of `#[inline(always)]` and `#[no_sanitize(...)]`
|
|
at intra_doc_link_resolution_failure failures in resolving intra-doc link targets
|
|
at invalid_codeblock_attributes codeblock attribute looks a lot like a known one
|
|
at invalid_type_param_default type parameter default erroneously allowed in invalid location
|
|
at invalid_value an invalid value is being created (such as a NULL reference)
|
|
at irrefutable_let_patterns detects irrefutable patterns in if-let and while-let statements
|
|
at keyword_idents detects edition keywords being used as an identifier
|
|
at late_bound_lifetime_arguments detects generic lifetime arguments in path segments with late bound lifetime parameters
|
|
at macro_expanded_macro_exports_accessed_by_absolute_paths macro-expanded `macro_export` macros from the current crate cannot be referred to by absolute paths
|
|
at macro_use_extern_crate the `#[macro_use]` attribute is now deprecated in favor of using macros via the module system
|
|
at meta_variable_misuse possible meta-variable misuse at macro definition
|
|
at missing_copy_implementations detects potentially-forgotten implementations of `Copy`
|
|
at missing_crate_level_docs detects crates with no crate-level documentation
|
|
at missing_debug_implementations detects missing implementations of Debug
|
|
at missing_doc_code_examples detects publicly-exported items without code samples in their documentation
|
|
at missing_docs detects missing documentation for public members
|
|
at missing_fragment_specifier detects missing fragment specifiers in unused `macro_rules!` patterns
|
|
at mixed_script_confusables detects Unicode scripts whose mixed script confusables codepoints are solely used
|
|
at mutable_borrow_reservation_conflict reservation of a two-phased borrow conflicts with other shared borrows
|
|
at mutable_transmutes mutating transmuted &mut T from &T may cause undefined behavior
|
|
at no_mangle_const_items const items will not have their symbols exported
|
|
at no_mangle_generic_items generic items must be mangled
|
|
at non_ascii_idents detects non-ASCII identifiers
|
|
at non_camel_case_types types, variants, traits and type parameters should have camel case names
|
|
at non_shorthand_field_patterns using `Struct { x: x }` instead of `Struct { x }` in a pattern
|
|
at non_snake_case variables, methods, functions, lifetime parameters and modules should have snake case names
|
|
at non_upper_case_globals static constants should have uppercase identifiers
|
|
at order_dependent_trait_objects trait-object types were treated as different depending on marker-trait order
|
|
at overflowing_literals literal out of range for its type
|
|
at overlapping_patterns detects overlapping patterns
|
|
at path_statements path statements with no effect
|
|
at patterns_in_fns_without_body patterns in functions without body were erroneously allowed
|
|
at private_doc_tests detects code samples in docs of private items not documented by rustdoc
|
|
at private_in_public detect private items in public interfaces not caught by the old implementation
|
|
at proc_macro_derive_resolution_fallback detects proc macro derives using inaccessible names from parent modules
|
|
at pub_use_of_private_extern_crate detect public re-exports of private extern crates
|
|
at redundant_semicolons detects unnecessary trailing semicolons
|
|
at renamed_and_removed_lints lints that have been renamed or removed
|
|
at safe_packed_borrows safe borrows of fields of packed structs were erroneously allowed
|
|
at single_use_lifetimes detects lifetime parameters that are only used once
|
|
at soft_unstable a feature gate that doesn't break dependent crates
|
|
at stable_features stable features found in `#[feature]` directive
|
|
at trivial_bounds these bounds don't depend on an type parameters
|
|
at trivial_casts detects trivial casts which could be removed
|
|
at trivial_numeric_casts detects trivial casts of numeric types which could be removed
|
|
at type_alias_bounds bounds in type aliases are not enforced
|
|
at tyvar_behind_raw_pointer raw pointer to an inference variable
|
|
at unaligned_references detects unaligned references to fields of packed structs
|
|
at uncommon_codepoints detects uncommon Unicode codepoints in identifiers
|
|
at unconditional_panic operation will cause a panic at runtime
|
|
at unconditional_recursion functions that cannot return without calling themselves
|
|
at unknown_crate_types unknown crate type found in `#[crate_type]` directive
|
|
at unknown_lints unrecognized lint attribute
|
|
at unnameable_test_items detects an item that cannot be named being marked as `#[test_case]`
|
|
at unreachable_code detects unreachable code paths
|
|
at unreachable_patterns detects unreachable patterns
|
|
at unreachable_pub `pub` items not reachable from crate root
|
|
at unsafe_code usage of `unsafe` code
|
|
at unsafe_op_in_unsafe_fn unsafe operations in unsafe functions without an explicit unsafe block are deprecated
|
|
at unstable_features enabling unstable features (deprecated. do not use)
|
|
at unstable_name_collisions detects name collision with an existing but unstable method
|
|
at unused_allocation detects unnecessary allocations that can be eliminated
|
|
at unused_assignments detect assignments that will never be read
|
|
at unused_attributes detects attributes that were not used by the compiler
|
|
at unused_braces unnecessary braces around an expression
|
|
at unused_comparisons comparisons made useless by limits of the types involved
|
|
at unused_crate_dependencies crate dependencies that are never used
|
|
at unused_doc_comments detects doc comments that aren't used by rustdoc
|
|
at unused_extern_crates extern crates that are never used
|
|
at unused_features unused features found in crate-level `#[feature]` directives
|
|
at unused_import_braces unnecessary braces around an imported item
|
|
at unused_imports imports that are never used
|
|
at unused_labels detects labels that are never used
|
|
at unused_lifetimes detects lifetime parameters that are never used
|
|
at unused_macros detects macros that were not used
|
|
at unused_must_use unused result of a type flagged as `#[must_use]`
|
|
at unused_mut detect mut variables which don't need to be mutable
|
|
at unused_parens `if`, `match`, `while` and `return` do not need parentheses
|
|
at unused_qualifications detects unnecessarily qualified names
|
|
at unused_results unused result of an expression in a statement
|
|
at unused_unsafe unnecessary use of an `unsafe` block
|
|
at unused_variables detect variables which are not used in any way
|
|
at variant_size_differences detects enums with widely varying variant sizes
|
|
at warnings mass-change the level for lints which produce warnings
|
|
at where_clauses_object_safety checks the object safety of where clauses
|
|
at while_true suggest using `loop { }` instead of `while true { }`
|
|
"#]],
|
|
)
|
|
}
|
|
|
|
#[test]
|
|
fn no_completion_for_incorrect_derive() {
|
|
check(
|
|
r#"
|
|
#[derive{<|>)]
|
|
struct Test {}
|
|
"#,
|
|
expect![[r#""#]],
|
|
)
|
|
}
|
|
|
|
#[test]
|
|
fn derive_with_input_completion() {
|
|
check(
|
|
r#"
|
|
#[derive(serde::Serialize, PartialEq, <|>)]
|
|
struct Test {}
|
|
"#,
|
|
expect![[r#"
|
|
at Clone
|
|
at Copy, Clone
|
|
at Debug
|
|
at Default
|
|
at Eq
|
|
at Hash
|
|
at Ord, PartialOrd, Eq
|
|
at PartialOrd
|
|
"#]],
|
|
)
|
|
}
|
|
|
|
#[test]
|
|
fn test_attribute_completion() {
|
|
check(
|
|
r#"#[<|>]"#,
|
|
expect![[r#"
|
|
at allow(…)
|
|
at cfg(…)
|
|
at cfg_attr(…)
|
|
at deny(…)
|
|
at deprecated = "…"
|
|
at derive(…)
|
|
at doc = "…"
|
|
at forbid(…)
|
|
at ignore = "…"
|
|
at inline(…)
|
|
at link
|
|
at link_name = "…"
|
|
at macro_export
|
|
at macro_use
|
|
at must_use = "…"
|
|
at no_mangle
|
|
at non_exhaustive
|
|
at path = "…"
|
|
at proc_macro
|
|
at proc_macro_attribute
|
|
at proc_macro_derive(…)
|
|
at repr(…)
|
|
at should_panic(…)
|
|
at target_feature = "…"
|
|
at test
|
|
at used
|
|
at warn(…)
|
|
"#]],
|
|
)
|
|
}
|
|
|
|
#[test]
|
|
fn test_attribute_completion_inside_nested_attr() {
|
|
check(r#"#[cfg(<|>)]"#, expect![[]])
|
|
}
|
|
|
|
#[test]
|
|
fn test_inner_attribute_completion() {
|
|
check(
|
|
r"#![<|>]",
|
|
expect![[r#"
|
|
at allow(…)
|
|
at cfg(…)
|
|
at cfg_attr(…)
|
|
at deny(…)
|
|
at deprecated = "…"
|
|
at derive(…)
|
|
at doc = "…"
|
|
at feature(…)
|
|
at forbid(…)
|
|
at global_allocator
|
|
at ignore = "…"
|
|
at inline(…)
|
|
at link
|
|
at link_name = "…"
|
|
at macro_export
|
|
at macro_use
|
|
at must_use = "…"
|
|
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 used
|
|
at warn(…)
|
|
at windows_subsystem = "…"
|
|
"#]],
|
|
);
|
|
}
|
|
}
|