4df1278c69
This updates the borrowck query to return a result, and this result is then used to incrementally check for unused mutable nodes given sets of all the used mutable nodes. Closes #42384
268 lines
10 KiB
Rust
268 lines
10 KiB
Rust
// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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//! Lints in the Rust compiler.
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//!
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//! This currently only contains the definitions and implementations
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//! of most of the lints that `rustc` supports directly, it does not
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//! contain the infrastructure for defining/registering lints. That is
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//! available in `rustc::lint` and `rustc_plugin` respectively.
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//!
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//! # Note
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//!
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//! This API is completely unstable and subject to change.
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#![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
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html_favicon_url = "https://doc.rust-lang.org/favicon.ico",
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html_root_url = "https://doc.rust-lang.org/nightly/")]
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#![deny(warnings)]
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#![cfg_attr(test, feature(test))]
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#![feature(box_patterns)]
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#![feature(box_syntax)]
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#![feature(i128_type)]
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#![feature(quote)]
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#![feature(rustc_diagnostic_macros)]
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#![feature(slice_patterns)]
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#[macro_use]
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extern crate syntax;
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#[macro_use]
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extern crate rustc;
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#[macro_use]
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extern crate log;
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extern crate rustc_const_eval;
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extern crate syntax_pos;
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use rustc::lint;
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use rustc::middle;
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use rustc::session;
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use rustc::util;
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use session::Session;
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use lint::LintId;
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use lint::FutureIncompatibleInfo;
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mod bad_style;
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mod builtin;
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mod types;
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mod unused;
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use bad_style::*;
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use builtin::*;
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use types::*;
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use unused::*;
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/// Tell the `LintStore` about all the built-in lints (the ones
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/// defined in this crate and the ones defined in
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/// `rustc::lint::builtin`).
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pub fn register_builtins(store: &mut lint::LintStore, sess: Option<&Session>) {
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macro_rules! add_builtin {
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($sess:ident, $($name:ident),*,) => (
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{$(
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store.register_late_pass($sess, false, box $name);
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)*}
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)
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}
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macro_rules! add_early_builtin {
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($sess:ident, $($name:ident),*,) => (
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{$(
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store.register_early_pass($sess, false, box $name);
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)*}
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)
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}
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macro_rules! add_builtin_with_new {
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($sess:ident, $($name:ident),*,) => (
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{$(
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store.register_late_pass($sess, false, box $name::new());
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)*}
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)
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}
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macro_rules! add_early_builtin_with_new {
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($sess:ident, $($name:ident),*,) => (
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{$(
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store.register_early_pass($sess, false, box $name::new());
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)*}
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)
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}
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macro_rules! add_lint_group {
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($sess:ident, $name:expr, $($lint:ident),*) => (
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store.register_group($sess, false, $name, vec![$(LintId::of($lint)),*]);
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)
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}
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add_early_builtin!(sess,
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UnusedParens,
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UnusedImportBraces,
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AnonymousParameters,
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IllegalFloatLiteralPattern,
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UnusedDocComment,
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);
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add_early_builtin_with_new!(sess,
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DeprecatedAttr,
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);
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add_builtin!(sess,
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HardwiredLints,
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WhileTrue,
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ImproperCTypes,
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VariantSizeDifferences,
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BoxPointers,
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UnusedAttributes,
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PathStatements,
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UnusedResults,
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NonCamelCaseTypes,
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NonSnakeCase,
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NonUpperCaseGlobals,
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NonShorthandFieldPatterns,
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UnsafeCode,
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UnusedAllocation,
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MissingCopyImplementations,
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UnstableFeatures,
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UnconditionalRecursion,
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InvalidNoMangleItems,
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PluginAsLibrary,
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MutableTransmutes,
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UnionsWithDropFields,
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);
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add_builtin_with_new!(sess,
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TypeLimits,
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MissingDoc,
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MissingDebugImplementations,
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);
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add_lint_group!(sess,
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"bad_style",
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NON_CAMEL_CASE_TYPES,
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NON_SNAKE_CASE,
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NON_UPPER_CASE_GLOBALS);
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add_lint_group!(sess,
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"unused",
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UNUSED_IMPORTS,
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UNUSED_VARIABLES,
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UNUSED_ASSIGNMENTS,
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DEAD_CODE,
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UNUSED_MUT,
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UNREACHABLE_CODE,
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UNREACHABLE_PATTERNS,
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UNUSED_MUST_USE,
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UNUSED_UNSAFE,
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PATH_STATEMENTS,
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UNUSED_ATTRIBUTES,
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UNUSED_MACROS);
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// Guidelines for creating a future incompatibility lint:
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//
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// - Create a lint defaulting to warn as normal, with ideally the same error
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// message you would normally give
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// - Add a suitable reference, typically an RFC or tracking issue. Go ahead
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// and include the full URL, sort items in ascending order of issue numbers.
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// - Later, change lint to error
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// - Eventually, remove lint
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store.register_future_incompatible(sess,
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vec![
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FutureIncompatibleInfo {
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id: LintId::of(PRIVATE_IN_PUBLIC),
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reference: "issue #34537 <https://github.com/rust-lang/rust/issues/34537>",
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},
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FutureIncompatibleInfo {
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id: LintId::of(PUB_USE_OF_PRIVATE_EXTERN_CRATE),
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reference: "issue #34537 <https://github.com/rust-lang/rust/issues/34537>",
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},
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FutureIncompatibleInfo {
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id: LintId::of(PATTERNS_IN_FNS_WITHOUT_BODY),
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reference: "issue #35203 <https://github.com/rust-lang/rust/issues/35203>",
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},
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FutureIncompatibleInfo {
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id: LintId::of(SAFE_EXTERN_STATICS),
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reference: "issue #36247 <https://github.com/rust-lang/rust/issues/36247>",
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},
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FutureIncompatibleInfo {
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id: LintId::of(INVALID_TYPE_PARAM_DEFAULT),
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reference: "issue #36887 <https://github.com/rust-lang/rust/issues/36887>",
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},
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FutureIncompatibleInfo {
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id: LintId::of(EXTRA_REQUIREMENT_IN_IMPL),
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reference: "issue #37166 <https://github.com/rust-lang/rust/issues/37166>",
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},
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FutureIncompatibleInfo {
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id: LintId::of(LEGACY_DIRECTORY_OWNERSHIP),
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reference: "issue #37872 <https://github.com/rust-lang/rust/issues/37872>",
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},
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FutureIncompatibleInfo {
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id: LintId::of(LEGACY_IMPORTS),
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reference: "issue #38260 <https://github.com/rust-lang/rust/issues/38260>",
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},
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FutureIncompatibleInfo {
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id: LintId::of(LEGACY_CONSTRUCTOR_VISIBILITY),
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reference: "issue #39207 <https://github.com/rust-lang/rust/issues/39207>",
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},
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FutureIncompatibleInfo {
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id: LintId::of(RESOLVE_TRAIT_ON_DEFAULTED_UNIT),
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reference: "issue #39216 <https://github.com/rust-lang/rust/issues/39216>",
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},
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FutureIncompatibleInfo {
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id: LintId::of(MISSING_FRAGMENT_SPECIFIER),
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reference: "issue #40107 <https://github.com/rust-lang/rust/issues/40107>",
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},
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FutureIncompatibleInfo {
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id: LintId::of(ILLEGAL_FLOATING_POINT_LITERAL_PATTERN),
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reference: "issue #41620 <https://github.com/rust-lang/rust/issues/41620>",
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},
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FutureIncompatibleInfo {
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id: LintId::of(ANONYMOUS_PARAMETERS),
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reference: "issue #41686 <https://github.com/rust-lang/rust/issues/41686>",
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},
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FutureIncompatibleInfo {
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id: LintId::of(PARENTHESIZED_PARAMS_IN_TYPES_AND_MODULES),
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reference: "issue #42238 <https://github.com/rust-lang/rust/issues/42238>",
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},
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FutureIncompatibleInfo {
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id: LintId::of(LATE_BOUND_LIFETIME_ARGUMENTS),
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reference: "issue #42868 <https://github.com/rust-lang/rust/issues/42868>",
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},
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]);
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// Register renamed and removed lints
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store.register_renamed("unknown_features", "unused_features");
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store.register_removed("unsigned_negation",
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"replaced by negate_unsigned feature gate");
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store.register_removed("negate_unsigned", "cast a signed value instead");
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store.register_removed("raw_pointer_derive", "using derive with raw pointers is ok");
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// This was renamed to raw_pointer_derive, which was then removed,
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// so it is also considered removed
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store.register_removed("raw_pointer_deriving",
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"using derive with raw pointers is ok");
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store.register_removed("drop_with_repr_extern", "drop flags have been removed");
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store.register_removed("transmute_from_fn_item_types",
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"always cast functions before transmuting them");
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store.register_removed("hr_lifetime_in_assoc_type",
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"converted into hard error, see https://github.com/rust-lang/rust/issues/33685");
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store.register_removed("inaccessible_extern_crate",
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"converted into hard error, see https://github.com/rust-lang/rust/issues/36886");
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store.register_removed("super_or_self_in_global_path",
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"converted into hard error, see https://github.com/rust-lang/rust/issues/36888");
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store.register_removed("overlapping_inherent_impls",
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"converted into hard error, see https://github.com/rust-lang/rust/issues/36889");
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store.register_removed("illegal_floating_point_constant_pattern",
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"converted into hard error, see https://github.com/rust-lang/rust/issues/36890");
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store.register_removed("illegal_struct_or_enum_constant_pattern",
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"converted into hard error, see https://github.com/rust-lang/rust/issues/36891");
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store.register_removed("lifetime_underscore",
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"converted into hard error, see https://github.com/rust-lang/rust/issues/36892");
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}
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