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Loader

Struct Loader 

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pub struct Loader { /* private fields */ }
Expand description

Builder for loading and resolving MIB modules.

Typical usage starts with Loader::new, adds one or more Sources, optionally restricts the requested modules, and finishes with Loader::load.

If no module list is provided, all modules visible from the configured sources are loaded.

§Examples

Load a specific module from a directory:

use mib_rs::Loader;

let mib = Loader::new()
    .source(mib_rs::source::dir("/usr/share/snmp/mibs").unwrap())
    .modules(["IF-MIB"])
    .load()
    .expect("load failed");

Load from an in-memory source:

use mib_rs::Loader;

let src = mib_rs::source::memory("MY-MIB", b"MY-MIB DEFINITIONS ::= BEGIN END".as_slice());
let mib = Loader::new()
    .source(src)
    .load()
    .expect("load failed");

Implementations§

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impl Loader

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pub fn new() -> Self

Create a new loader with no sources.

Uses ResolverStrictness::Normal and the default DiagnosticConfig.

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pub fn source(self, src: Box<dyn Source>) -> Self

Add a MIB source.

Sources are searched in the order they are added. When the same module is available from multiple sources, the first matching source wins.

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pub fn sources(self, srcs: Vec<Box<dyn Source>>) -> Self

Add multiple MIB sources.

Sources are appended in order and searched left-to-right.

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pub fn modules(self, names: impl IntoIterator<Item = impl Into<String>>) -> Self

Restrict loading to the named modules and their transitive dependencies.

When omitted, all modules from the configured sources are loaded.

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pub fn diagnostic_config(self, config: DiagnosticConfig) -> Self

Set the DiagnosticConfig controlling which diagnostics are reported and which severity triggers a LoadError::DiagnosticThreshold.

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pub fn resolver_strictness(self, strictness: ResolverStrictness) -> Self

Set the ResolverStrictness level used during resolution.

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pub fn system_paths(self) -> Self

Enable automatic discovery of system MIB directories.

Probes net-snmp and libsmi config files and environment variables. Discovered paths are appended after any explicitly added sources. See searchpath::discover_system_paths for details.

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impl Loader

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pub fn load(self) -> Result<Mib, LoadError>

Execute the full load pipeline and return the resolved Mib.

Runs source discovery, parallel parsing, lowering, and resolution.

§Errors

Returns LoadError::NoSources if no sources are configured, LoadError::MissingModules if explicitly requested modules cannot be found, LoadError::DiagnosticThreshold if any diagnostic exceeds the configured severity threshold, or LoadError::Io on file read failures.

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impl Default for Loader

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fn default() -> Self

Returns the “default value” for a type. Read more

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<T> Pointable for T

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const ALIGN: usize

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more