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https://github.com/rust-lang/rust-analyzer
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add completion for rustc lints
This commit is contained in:
Emil Gardström
parent
8ff40af728
commit
2b8dcc15ac
1 changed files with 278 additions and 4 deletions
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@ -13,13 +13,19 @@ use crate::completion::{
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pub(super) fn complete_attribute(acc: &mut Completions, ctx: &CompletionContext) -> Option<()> {
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let attribute = ctx.attribute_under_caret.as_ref()?;
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match (attribute.path(), attribute.input()) {
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(Some(path), Some(ast::AttrInput::TokenTree(token_tree)))
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if path.to_string() == "derive" =>
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{
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complete_derive(acc, ctx, token_tree)
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}
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(Some(path), Some(ast::AttrInput::TokenTree(token_tree)))
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if ["allow", "warn", "deny", "forbid"]
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.iter()
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.any(|lint_level| lint_level == &path.to_string()) =>
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{
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complete_lint(acc, ctx, token_tree)
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}
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(_, Some(ast::AttrInput::TokenTree(_token_tree))) => {}
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_ => complete_attribute_start(acc, ctx, attribute),
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}
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@ -125,7 +131,7 @@ const ATTRIBUTES: &[AttrCompletion] = &[
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];
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fn complete_derive(acc: &mut Completions, ctx: &CompletionContext, derive_input: ast::TokenTree) {
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if let Ok(existing_derives) = parse_derive_input(derive_input) {
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if let Ok(existing_derives) = parse_comma_sep_input(derive_input) {
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for derive_completion in DEFAULT_DERIVE_COMPLETIONS
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.into_iter()
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.filter(|completion| !existing_derives.contains(completion.label))
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@ -158,7 +164,26 @@ fn complete_derive(acc: &mut Completions, ctx: &CompletionContext, derive_input:
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}
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}
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fn parse_derive_input(derive_input: ast::TokenTree) -> Result<FxHashSet<String>, ()> {
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fn complete_lint(acc: &mut Completions, ctx: &CompletionContext, derive_input: ast::TokenTree) {
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if let Ok(existing_lints) = parse_comma_sep_input(derive_input) {
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for lint_completion in DEFAULT_LINT_COMPLETIONS
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.into_iter()
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.filter(|completion| !existing_lints.contains(completion.label))
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{
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acc.add(
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CompletionItem::new(
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CompletionKind::Attribute,
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ctx.source_range(),
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lint_completion.label,
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)
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.kind(CompletionItemKind::Attribute)
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.detail(lint_completion.description),
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);
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}
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}
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}
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fn parse_comma_sep_input(derive_input: ast::TokenTree) -> Result<FxHashSet<String>, ()> {
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match (derive_input.left_delimiter_token(), derive_input.right_delimiter_token()) {
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(Some(left_paren), Some(right_paren))
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if left_paren.kind() == SyntaxKind::L_PAREN
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@ -212,6 +237,7 @@ struct DeriveCompletion {
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/// Standard Rust derives and the information about their dependencies
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/// (the dependencies are needed so that the main derive don't break the compilation when added)
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#[rustfmt::skip]
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const DEFAULT_DERIVE_COMPLETIONS: &[DeriveCompletion] = &[
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DeriveCompletion { label: "Clone", dependencies: &[] },
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DeriveCompletion { label: "Copy", dependencies: &["Clone"] },
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@ -224,6 +250,130 @@ const DEFAULT_DERIVE_COMPLETIONS: &[DeriveCompletion] = &[
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DeriveCompletion { label: "Ord", dependencies: &["PartialOrd", "Eq", "PartialEq"] },
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];
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struct LintCompletion {
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label: &'static str,
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description: &'static str,
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}
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#[rustfmt::skip]
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const DEFAULT_LINT_COMPLETIONS: &[LintCompletion] = &[
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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"# },
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LintCompletion { label: "anonymous_parameters", description: r#"detects anonymous parameters"# },
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LintCompletion { label: "box_pointers", description: r#"use of owned (Box type) heap memory"# },
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LintCompletion { label: "deprecated_in_future", description: r#"detects use of items that will be deprecated in a future version"# },
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LintCompletion { label: "elided_lifetimes_in_paths", description: r#"hidden lifetime parameters in types are deprecated"# },
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LintCompletion { label: "explicit_outlives_requirements", description: r#"outlives requirements can be inferred"# },
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LintCompletion { label: "indirect_structural_match", description: r#"pattern with const indirectly referencing non-structural-match type"# },
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LintCompletion { label: "keyword_idents", description: r#"detects edition keywords being used as an identifier"# },
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LintCompletion { label: "macro_use_extern_crate", description: r#"the `#[macro_use]` attribute is now deprecated in favor of using macros via the module system"# },
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LintCompletion { label: "meta_variable_misuse", description: r#"possible meta-variable misuse at macro definition"# },
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LintCompletion { label: "missing_copy_implementations", description: r#"detects potentially-forgotten implementations of `Copy`"# },
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LintCompletion { label: "missing_crate_level_docs", description: r#"detects crates with no crate-level documentation"# },
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LintCompletion { label: "missing_debug_implementations", description: r#"detects missing implementations of Debug"# },
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LintCompletion { label: "missing_docs", description: r#"detects missing documentation for public members"# },
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LintCompletion { label: "missing_doc_code_examples", description: r#"detects publicly-exported items without code samples in their documentation"# },
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LintCompletion { label: "non_ascii_idents", description: r#"detects non-ASCII identifiers"# },
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LintCompletion { label: "private_doc_tests", description: r#"detects code samples in docs of private items not documented by rustdoc"# },
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LintCompletion { label: "single_use_lifetimes", description: r#"detects lifetime parameters that are only used once"# },
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LintCompletion { label: "trivial_casts", description: r#"detects trivial casts which could be removed"# },
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LintCompletion { label: "trivial_numeric_casts", description: r#"detects trivial casts of numeric types which could be removed"# },
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LintCompletion { label: "unaligned_references", description: r#"detects unaligned references to fields of packed structs"# },
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LintCompletion { label: "unreachable_pub", description: r#"`pub` items not reachable from crate root"# },
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LintCompletion { label: "unsafe_code", description: r#"usage of `unsafe` code"# },
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LintCompletion { label: "unsafe_op_in_unsafe_fn", description: r#"unsafe operations in unsafe functions without an explicit unsafe block are deprecated"# },
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LintCompletion { label: "unstable_features", description: r#"enabling unstable features (deprecated. do not use)"# },
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LintCompletion { label: "unused_crate_dependencies", description: r#"crate dependencies that are never used"# },
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LintCompletion { label: "unused_extern_crates", description: r#"extern crates that are never used"# },
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LintCompletion { label: "unused_import_braces", description: r#"unnecessary braces around an imported item"# },
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LintCompletion { label: "unused_lifetimes", description: r#"detects lifetime parameters that are never used"# },
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LintCompletion { label: "unused_qualifications", description: r#"detects unnecessarily qualified names"# },
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LintCompletion { label: "unused_results", description: r#"unused result of an expression in a statement"# },
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LintCompletion { label: "variant_size_differences", description: r#"detects enums with widely varying variant sizes"# },
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LintCompletion { label: "array_into_iter", description: r#"detects calling `into_iter` on arrays"# },
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LintCompletion { label: "asm_sub_register", description: r#"using only a subset of a register for inline asm inputs"# },
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LintCompletion { label: "bare_trait_objects", description: r#"suggest using `dyn Trait` for trait objects"# },
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LintCompletion { label: "bindings_with_variant_name", description: r#"detects pattern bindings with the same name as one of the matched variants"# },
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LintCompletion { label: "cenum_impl_drop_cast", description: r#"a C-like enum implementing Drop is cast"# },
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LintCompletion { label: "clashing_extern_declarations", description: r#"detects when an extern fn has been declared with the same name but different types"# },
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LintCompletion { label: "coherence_leak_check", description: r#"distinct impls distinguished only by the leak-check code"# },
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LintCompletion { label: "confusable_idents", description: r#"detects visually confusable pairs between identifiers"# },
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LintCompletion { label: "dead_code", description: r#"detect unused, unexported items"# },
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LintCompletion { label: "deprecated", description: r#"detects use of deprecated items"# },
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LintCompletion { label: "ellipsis_inclusive_range_patterns", description: r#"`...` range patterns are deprecated"# },
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LintCompletion { label: "exported_private_dependencies", description: r#"public interface leaks type from a private dependency"# },
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LintCompletion { label: "illegal_floating_point_literal_pattern", description: r#"floating-point literals cannot be used in patterns"# },
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LintCompletion { label: "improper_ctypes", description: r#"proper use of libc types in foreign modules"# },
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LintCompletion { label: "improper_ctypes_definitions", description: r#"proper use of libc types in foreign item definitions"# },
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LintCompletion { label: "incomplete_features", description: r#"incomplete features that may function improperly in some or all cases"# },
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LintCompletion { label: "inline_no_sanitize", description: r#"detects incompatible use of `#[inline(always)]` and `#[no_sanitize(...)]`"# },
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LintCompletion { label: "intra_doc_link_resolution_failure", description: r#"failures in resolving intra-doc link targets"# },
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LintCompletion { label: "invalid_codeblock_attributes", description: r#"codeblock attribute looks a lot like a known one"# },
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LintCompletion { label: "invalid_value", description: r#"an invalid value is being created (such as a NULL reference)"# },
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LintCompletion { label: "irrefutable_let_patterns", description: r#"detects irrefutable patterns in if-let and while-let statements"# },
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LintCompletion { label: "late_bound_lifetime_arguments", description: r#"detects generic lifetime arguments in path segments with late bound lifetime parameters"# },
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LintCompletion { label: "mixed_script_confusables", description: r#"detects Unicode scripts whose mixed script confusables codepoints are solely used"# },
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LintCompletion { label: "mutable_borrow_reservation_conflict", description: r#"reservation of a two-phased borrow conflicts with other shared borrows"# },
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LintCompletion { label: "non_camel_case_types", description: r#"types, variants, traits and type parameters should have camel case names"# },
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LintCompletion { label: "non_shorthand_field_patterns", description: r#"using `Struct { x: x }` instead of `Struct { x }` in a pattern"# },
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LintCompletion { label: "non_snake_case", description: r#"variables, methods, functions, lifetime parameters and modules should have snake case names"# },
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LintCompletion { label: "non_upper_case_globals", description: r#"static constants should have uppercase identifiers"# },
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LintCompletion { label: "no_mangle_generic_items", description: r#"generic items must be mangled"# },
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LintCompletion { label: "overlapping_patterns", description: r#"detects overlapping patterns"# },
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LintCompletion { label: "path_statements", description: r#"path statements with no effect"# },
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LintCompletion { label: "private_in_public", description: r#"detect private items in public interfaces not caught by the old implementation"# },
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LintCompletion { label: "proc_macro_derive_resolution_fallback", description: r#"detects proc macro derives using inaccessible names from parent modules"# },
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LintCompletion { label: "redundant_semicolons", description: r#"detects unnecessary trailing semicolons"# },
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LintCompletion { label: "renamed_and_removed_lints", description: r#"lints that have been renamed or removed"# },
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LintCompletion { label: "safe_packed_borrows", description: r#"safe borrows of fields of packed structs were erroneously allowed"# },
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LintCompletion { label: "stable_features", description: r#"stable features found in `#[feature]` directive"# },
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LintCompletion { label: "trivial_bounds", description: r#"these bounds don't depend on an type parameters"# },
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LintCompletion { label: "type_alias_bounds", description: r#"bounds in type aliases are not enforced"# },
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LintCompletion { label: "tyvar_behind_raw_pointer", description: r#"raw pointer to an inference variable"# },
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LintCompletion { label: "uncommon_codepoints", description: r#"detects uncommon Unicode codepoints in identifiers"# },
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LintCompletion { label: "unconditional_recursion", description: r#"functions that cannot return without calling themselves"# },
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LintCompletion { label: "unknown_lints", description: r#"unrecognized lint attribute"# },
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LintCompletion { label: "unnameable_test_items", description: r#"detects an item that cannot be named being marked as `#[test_case]`"# },
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LintCompletion { label: "unreachable_code", description: r#"detects unreachable code paths"# },
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LintCompletion { label: "unreachable_patterns", description: r#"detects unreachable patterns"# },
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LintCompletion { label: "unstable_name_collisions", description: r#"detects name collision with an existing but unstable method"# },
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LintCompletion { label: "unused_allocation", description: r#"detects unnecessary allocations that can be eliminated"# },
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LintCompletion { label: "unused_assignments", description: r#"detect assignments that will never be read"# },
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LintCompletion { label: "unused_attributes", description: r#"detects attributes that were not used by the compiler"# },
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LintCompletion { label: "unused_braces", description: r#"unnecessary braces around an expression"# },
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LintCompletion { label: "unused_comparisons", description: r#"comparisons made useless by limits of the types involved"# },
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LintCompletion { label: "unused_doc_comments", description: r#"detects doc comments that aren't used by rustdoc"# },
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LintCompletion { label: "unused_features", description: r#"unused features found in crate-level `#[feature]` directives"# },
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LintCompletion { label: "unused_imports", description: r#"imports that are never used"# },
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LintCompletion { label: "unused_labels", description: r#"detects labels that are never used"# },
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LintCompletion { label: "unused_macros", description: r#"detects macros that were not used"# },
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LintCompletion { label: "unused_must_use", description: r#"unused result of a type flagged as `#[must_use]`"# },
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LintCompletion { label: "unused_mut", description: r#"detect mut variables which don't need to be mutable"# },
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LintCompletion { label: "unused_parens", description: r#"`if`, `match`, `while` and `return` do not need parentheses"# },
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LintCompletion { label: "unused_unsafe", description: r#"unnecessary use of an `unsafe` block"# },
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LintCompletion { label: "unused_variables", description: r#"detect variables which are not used in any way"# },
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LintCompletion { label: "warnings", description: r#"mass-change the level for lints which produce warnings"# },
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LintCompletion { label: "where_clauses_object_safety", description: r#"checks the object safety of where clauses"# },
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LintCompletion { label: "while_true", description: r#"suggest using `loop { }` instead of `while true { }`"# },
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LintCompletion { label: "ambiguous_associated_items", description: r#"ambiguous associated items"# },
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LintCompletion { label: "arithmetic_overflow", description: r#"arithmetic operation overflows"# },
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LintCompletion { label: "conflicting_repr_hints", description: r#"conflicts between `#[repr(..)]` hints that were previously accepted and used in practice"# },
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LintCompletion { label: "const_err", description: r#"constant evaluation detected erroneous expression"# },
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LintCompletion { label: "ill_formed_attribute_input", description: r#"ill-formed attribute inputs that were previously accepted and used in practice"# },
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LintCompletion { label: "incomplete_include", description: r#"trailing content in included file"# },
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LintCompletion { label: "invalid_type_param_default", description: r#"type parameter default erroneously allowed in invalid location"# },
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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"# },
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LintCompletion { label: "missing_fragment_specifier", description: r#"detects missing fragment specifiers in unused `macro_rules!` patterns"# },
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LintCompletion { label: "mutable_transmutes", description: r#"mutating transmuted &mut T from &T may cause undefined behavior"# },
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LintCompletion { label: "no_mangle_const_items", description: r#"const items will not have their symbols exported"# },
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LintCompletion { label: "order_dependent_trait_objects", description: r#"trait-object types were treated as different depending on marker-trait order"# },
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LintCompletion { label: "overflowing_literals", description: r#"literal out of range for its type"# },
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LintCompletion { label: "patterns_in_fns_without_body", description: r#"patterns in functions without body were erroneously allowed"# },
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LintCompletion { label: "pub_use_of_private_extern_crate", description: r#"detect public re-exports of private extern crates"# },
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LintCompletion { label: "soft_unstable", description: r#"a feature gate that doesn't break dependent crates"# },
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LintCompletion { label: "unconditional_panic", description: r#"operation will cause a panic at runtime"# },
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LintCompletion { label: "unknown_crate_types", description: r#"unknown crate type found in `#[crate_type]` directive"# },
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];
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#[cfg(test)]
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mod tests {
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use expect::{expect, Expect};
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@ -256,6 +406,130 @@ struct Test {}
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);
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}
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#[test]
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fn empty_lint_completion() {
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check(
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r#"#[allow(<|>)]"#,
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expect![[r#"
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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
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at ambiguous_associated_items ambiguous associated items
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at anonymous_parameters detects anonymous parameters
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at arithmetic_overflow arithmetic operation overflows
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at array_into_iter detects calling `into_iter` on arrays
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at asm_sub_register using only a subset of a register for inline asm inputs
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at bare_trait_objects suggest using `dyn Trait` for trait objects
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at bindings_with_variant_name detects pattern bindings with the same name as one of the matched variants
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at box_pointers use of owned (Box type) heap memory
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at cenum_impl_drop_cast a C-like enum implementing Drop is cast
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at clashing_extern_declarations detects when an extern fn has been declared with the same name but different types
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at coherence_leak_check distinct impls distinguished only by the leak-check code
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at conflicting_repr_hints conflicts between `#[repr(..)]` hints that were previously accepted and used in practice
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at confusable_idents detects visually confusable pairs between identifiers
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at const_err constant evaluation detected erroneous expression
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at dead_code detect unused, unexported items
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at deprecated detects use of deprecated items
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at deprecated_in_future detects use of items that will be deprecated in a future version
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at elided_lifetimes_in_paths hidden lifetime parameters in types are deprecated
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at ellipsis_inclusive_range_patterns `...` range patterns are deprecated
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at explicit_outlives_requirements outlives requirements can be inferred
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at exported_private_dependencies public interface leaks type from a private dependency
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at ill_formed_attribute_input ill-formed attribute inputs that were previously accepted and used in practice
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at illegal_floating_point_literal_pattern floating-point literals cannot be used in patterns
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at improper_ctypes proper use of libc types in foreign modules
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at improper_ctypes_definitions proper use of libc types in foreign item definitions
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at incomplete_features incomplete features that may function improperly in some or all cases
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at incomplete_include trailing content in included file
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at indirect_structural_match pattern with const indirectly referencing non-structural-match type
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at inline_no_sanitize detects incompatible use of `#[inline(always)]` and `#[no_sanitize(...)]`
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at intra_doc_link_resolution_failure failures in resolving intra-doc link targets
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at invalid_codeblock_attributes codeblock attribute looks a lot like a known one
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at invalid_type_param_default type parameter default erroneously allowed in invalid location
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at invalid_value an invalid value is being created (such as a NULL reference)
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at irrefutable_let_patterns detects irrefutable patterns in if-let and while-let statements
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at keyword_idents detects edition keywords being used as an identifier
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at late_bound_lifetime_arguments detects generic lifetime arguments in path segments with late bound lifetime parameters
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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
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at macro_use_extern_crate the `#[macro_use]` attribute is now deprecated in favor of using macros via the module system
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at meta_variable_misuse possible meta-variable misuse at macro definition
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at missing_copy_implementations detects potentially-forgotten implementations of `Copy`
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at missing_crate_level_docs detects crates with no crate-level documentation
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at missing_debug_implementations detects missing implementations of Debug
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at missing_doc_code_examples detects publicly-exported items without code samples in their documentation
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at missing_docs detects missing documentation for public members
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at missing_fragment_specifier detects missing fragment specifiers in unused `macro_rules!` patterns
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at mixed_script_confusables detects Unicode scripts whose mixed script confusables codepoints are solely used
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at mutable_borrow_reservation_conflict reservation of a two-phased borrow conflicts with other shared borrows
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at mutable_transmutes mutating transmuted &mut T from &T may cause undefined behavior
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at no_mangle_const_items const items will not have their symbols exported
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at no_mangle_generic_items generic items must be mangled
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at non_ascii_idents detects non-ASCII identifiers
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at non_camel_case_types types, variants, traits and type parameters should have camel case names
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at non_shorthand_field_patterns using `Struct { x: x }` instead of `Struct { x }` in a pattern
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at non_snake_case variables, methods, functions, lifetime parameters and modules should have snake case names
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at non_upper_case_globals static constants should have uppercase identifiers
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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(
|
||||
|
|
@ -325,7 +599,7 @@ struct Test {}
|
|||
|
||||
#[test]
|
||||
fn test_attribute_completion_inside_nested_attr() {
|
||||
check(r#"#[allow(<|>)]"#, expect![[]])
|
||||
check(r#"#[cfg(<|>)]"#, expect![[]])
|
||||
}
|
||||
|
||||
#[test]
|
||||
|
|
|
|||
Loading…
Reference in a new issue