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LhsExpr
1 parent b9de4ef commit 194d357Copy full SHA for 194d357
src/libsyntax/parse/parser/expr.rs
@@ -66,6 +66,10 @@ pub(super) enum LhsExpr {
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}
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impl From<Option<ThinVec<Attribute>>> for LhsExpr {
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+ /// Converts `Some(attrs)` into `LhsExpr::AttributesParsed(attrs)`
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+ /// and `None` into `LhsExpr::NotYetParsed`.
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+ ///
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+ /// This conversion does not allocate.
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fn from(o: Option<ThinVec<Attribute>>) -> Self {
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if let Some(attrs) = o {
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LhsExpr::AttributesParsed(attrs)
@@ -76,6 +80,9 @@ impl From<Option<ThinVec<Attribute>>> for LhsExpr {
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impl From<P<Expr>> for LhsExpr {
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+ /// Converts the `expr: P<Expr>` into `LhsExpr::AlreadyParsed(expr)`.
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fn from(expr: P<Expr>) -> Self {
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LhsExpr::AlreadyParsed(expr)
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