107 lines
3 KiB
Rust
107 lines
3 KiB
Rust
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use rustc_abi::Align;
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use rustc_ast as ast;
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use rustc_macros::{Decodable, Encodable, HashStable_Generic};
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use rustc_span::{Span, Symbol};
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use crate::RustcVersion;
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#[derive(Copy, Clone, PartialEq, Encodable, Decodable, Debug, HashStable_Generic)]
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pub enum InlineAttr {
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None,
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Hint,
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Always,
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Never,
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}
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#[derive(Clone, Encodable, Decodable, Debug, PartialEq, Eq, HashStable_Generic)]
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pub enum InstructionSetAttr {
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ArmA32,
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ArmT32,
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}
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#[derive(Clone, Encodable, Decodable, Debug, HashStable_Generic)]
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pub enum OptimizeAttr {
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None,
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Speed,
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Size,
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}
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#[derive(Clone, Debug, Encodable, Decodable)]
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pub enum DiagnosticAttribute {
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// tidy-alphabetical-start
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DoNotRecommend,
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OnUnimplemented,
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// tidy-alphabetical-end
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}
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#[derive(PartialEq, Debug, Encodable, Decodable, Copy, Clone)]
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pub enum ReprAttr {
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ReprInt(IntType),
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ReprRust,
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ReprC,
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ReprPacked(Align),
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ReprSimd,
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ReprTransparent,
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ReprAlign(Align),
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}
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pub use ReprAttr::*;
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pub enum TransparencyError {
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UnknownTransparency(Symbol, Span),
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MultipleTransparencyAttrs(Span, Span),
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}
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#[derive(Eq, PartialEq, Debug, Copy, Clone)]
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#[derive(Encodable, Decodable)]
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pub enum IntType {
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SignedInt(ast::IntTy),
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UnsignedInt(ast::UintTy),
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}
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#[derive(Copy, Debug, Encodable, Decodable, Clone, HashStable_Generic)]
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pub struct Deprecation {
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pub since: DeprecatedSince,
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/// The note to issue a reason.
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pub note: Option<Symbol>,
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/// A text snippet used to completely replace any use of the deprecated item in an expression.
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///
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/// This is currently unstable.
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pub suggestion: Option<Symbol>,
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}
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/// Release in which an API is deprecated.
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#[derive(Copy, Debug, Encodable, Decodable, Clone, HashStable_Generic)]
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pub enum DeprecatedSince {
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RustcVersion(RustcVersion),
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/// Deprecated in the future ("to be determined").
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Future,
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/// `feature(staged_api)` is off. Deprecation versions outside the standard
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/// library are allowed to be arbitrary strings, for better or worse.
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NonStandard(Symbol),
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/// Deprecation version is unspecified but optional.
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Unspecified,
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/// Failed to parse a deprecation version, or the deprecation version is
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/// unspecified and required. An error has already been emitted.
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Err,
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}
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impl Deprecation {
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/// Whether an item marked with #[deprecated(since = "X")] is currently
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/// deprecated (i.e., whether X is not greater than the current rustc
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/// version).
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pub fn is_in_effect(&self) -> bool {
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match self.since {
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DeprecatedSince::RustcVersion(since) => since <= RustcVersion::CURRENT,
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DeprecatedSince::Future => false,
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// The `since` field doesn't have semantic purpose without `#![staged_api]`.
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DeprecatedSince::NonStandard(_) => true,
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// Assume deprecation is in effect if "since" field is absent or invalid.
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DeprecatedSince::Unspecified | DeprecatedSince::Err => true,
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}
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}
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pub fn is_since_rustc_version(&self) -> bool {
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matches!(self.since, DeprecatedSince::RustcVersion(_))
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}
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}
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