pub struct MacroExpander<'a, 'b: 'a> {
pub cx: &'a mut ExtCtxt<'b>,
monotonic: bool,
}
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Collect all macro invocations reachable at this time in this AST fragment, and replace
them with "placeholders" - dummy macro invocations with specially crafted NodeId
s.
Then call into resolver that builds a skeleton ("reduced graph") of the fragment and
prepares data for resolving paths of macro invocations.
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Expand a macro invocation. Returns the resulting expanded AST fragment.
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Expand a derive invocation. Returns the resulting expanded AST fragment.
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type Error = !
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)
The type returned in the event of a conversion error.
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Immutably borrows from an owned value. Read more
type Error = <U as TryFrom<T>>::Error
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)
The type returned in the event of a conversion error.
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Mutably borrows from an owned value. Read more
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this method will likely be replaced by an associated static
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Create an error for a missing method specialization. Defaults to panicking with type, trait & method names. S
is the encoder/decoder state type, T
is the type being encoded/decoded, and the arguments are the names of the trait and method that should've been overridden. Read more