Struct log::MetadataBuilder

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pub struct MetadataBuilder<'a> { /* private fields */ }
Expand description

Builder for Metadata.

Typically should only be used by log library creators or for testing and “shim loggers”. The MetadataBuilder can set the different parameters of a Metadata object, and returns the created object when build is called.

Example

let target = "myApp";
use log::{Level, MetadataBuilder};
let metadata = MetadataBuilder::new()
                    .level(Level::Debug)
                    .target(target)
                    .build();

Implementations§

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impl<'a> MetadataBuilder<'a>

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pub fn new() -> MetadataBuilder<'a>

Construct a new MetadataBuilder.

The default options are:

  • level: Level::Info
  • target: ""
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pub fn level(&mut self, arg: Level) -> &mut MetadataBuilder<'a>

Setter for level.

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pub fn target(&mut self, target: &'a str) -> &mut MetadataBuilder<'a>

Setter for target.

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pub fn build(&self) -> Metadata<'a>

Returns a Metadata object.

Trait Implementations§

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impl<'a> Debug for MetadataBuilder<'a>

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl<'a> Hash for MetadataBuilder<'a>

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fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher. Read more
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fn hash_slice<H>(data: &[Self], state: &mut H)where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl<'a> Ord for MetadataBuilder<'a>

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fn cmp(&self, other: &MetadataBuilder<'a>) -> Ordering

This method returns an Ordering between self and other. Read more
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fn max(self, other: Self) -> Selfwhere Self: Sized,

Compares and returns the maximum of two values. Read more
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fn min(self, other: Self) -> Selfwhere Self: Sized,

Compares and returns the minimum of two values. Read more
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fn clamp(self, min: Self, max: Self) -> Selfwhere Self: Sized + PartialOrd<Self>,

Restrict a value to a certain interval. Read more
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impl<'a> PartialEq<MetadataBuilder<'a>> for MetadataBuilder<'a>

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fn eq(&self, other: &MetadataBuilder<'a>) -> bool

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl<'a> PartialOrd<MetadataBuilder<'a>> for MetadataBuilder<'a>

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fn partial_cmp(&self, other: &MetadataBuilder<'a>) -> Option<Ordering>

This method returns an ordering between self and other values if one exists. Read more
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fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator. Read more
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fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator. Read more
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fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator. Read more
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fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator. Read more
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impl<'a> Eq for MetadataBuilder<'a>

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impl<'a> StructuralEq for MetadataBuilder<'a>

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impl<'a> StructuralPartialEq for MetadataBuilder<'a>

Auto Trait Implementations§

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impl<'a> RefUnwindSafe for MetadataBuilder<'a>

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impl<'a> Send for MetadataBuilder<'a>

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impl<'a> Sync for MetadataBuilder<'a>

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impl<'a> Unpin for MetadataBuilder<'a>

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impl<'a> UnwindSafe for MetadataBuilder<'a>

Blanket Implementations§

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impl<T> Any for Twhere 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 Twhere 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 Twhere 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, U> Into<U> for Twhere 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, U> TryFrom<U> for Twhere 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 Twhere 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.