pub struct IndexBuilder<'a, 'b: 'a, 'tcx: 'b> {
items: Index,
pub ecx: &'a mut EncodeContext<'b, 'tcx>,
}
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Builder that can encode new items, adding them into the index.
Item encoding cannot be nested.
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🔬 This is a nightly-only experimental API. (rustc_private
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🔬 This is a nightly-only experimental API. (rustc_private
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Emit the data for a def-id to the metadata. The function to
emit the data is op
, and it will be given data
as
arguments. This record
function will call op
to generate
the Entry
(which may point to other encoded information)
and will then record the Lazy<Entry>
for use in the index.
In addition, it will setup a dep-graph task to track what data
op
accesses to generate the metadata, which is later used by
incremental compilation to compute a hash for the metadata and
track changes.
The reason that op
is a function pointer, and not a closure,
is that we want to be able to completely track all data it has
access to, so that we can be sure that DATA: DepGraphRead
holds, and that it is therefore not gaining "secret" access to
bits of HIR or other state that would not be trackd by the
content system.
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🔬 This is a nightly-only experimental API. (rustc_private
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🔬 This is a nightly-only experimental API. (rustc_private
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🔬 This is a nightly-only experimental API. (rustc_private
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🔬 This is a nightly-only experimental API. (rustc_private
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In some cases, along with the item itself, we also
encode some sub-items. Usually we want some info from the item
so it's easier to do that here then to wait until we would encounter
normally in the visitor walk.
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🔬 This is a nightly-only experimental API. (rustc_private
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🔬 This is a nightly-only experimental API. (rustc_private
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🔬 This is a nightly-only experimental API. (rustc_private
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🔬 This is a nightly-only experimental API. (rustc_private
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🔬 This is a nightly-only experimental API. (rustc_private
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🔬 This is a nightly-only experimental API. (rustc_private
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🔬 This is a nightly-only experimental API. (rustc_private
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The resulting type after dereferencing.
Mutably dereferences the value.
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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
🔬 This is a nightly-only experimental API. (get_type_id
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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
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