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Add some useful comments to LitKind.

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This commit is contained in:
Nicholas Nethercote 2022-08-22 13:38:19 +10:00
parent 8818b00b63
commit fb5dc6b3e7
1 changed files with 4 additions and 2 deletions
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6
compiler/rustc_ast/src/ast.rs
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@ -1751,7 +1751,8 @@ pub enum LitFloatType {
/// E.g., `"foo"`, `42`, `12.34`, or `bool`.
#[derive(Clone, Encodable, Decodable, Debug, Hash, Eq, PartialEq, HashStable_Generic)]
pub enum LitKind {
/// A string literal (`"foo"`).
/// A string literal (`"foo"`). The symbol is unescaped, and so may differ
/// from the original token's symbol.
Str(Symbol, StrStyle),
/// A byte string (`b"foo"`).
ByteStr(Lrc<[u8]>),
@ -1761,7 +1762,8 @@ pub enum LitKind {
Char(char),
/// An integer literal (`1`).
Int(u128, LitIntType),
/// A float literal (`1f64` or `1E10f64`).
/// A float literal (`1f64` or `1E10f64`). Stored as a symbol rather than
/// `f64` so that `LitKind` can impl `Eq` and `Hash`.
Float(Symbol, LitFloatType),
/// A boolean literal.
Bool(bool),