pub enum TypeNarrowing {
    All,
    Unquoted,
    None,
}
Expand description

Controls when a value is attempted to be narrowed to a more specific type

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All

Attempt to narrow all values to more specific type

use jomini::{TextTape, json::{JsonOptions, TypeNarrowing}};

let tape = TextTape::from_slice(br#"a="01" b=02 c="yes" d=no"#)?;
let reader = tape.windows1252_reader();

let options = JsonOptions::new()
    .with_type_narrowing(TypeNarrowing::All);

let actual = reader.json()
    .with_options(options)
    .to_string();
assert_eq!(actual, r#"{"a":1,"b":2,"c":true,"d":false}"#);
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Unquoted

Only attempt to narrow unquoted values to a more specific type

use jomini::{TextTape, json::{JsonOptions, TypeNarrowing}};

let tape = TextTape::from_slice(br#"a="01" b=02 c="yes" d=no"#)?;
let reader = tape.windows1252_reader();

let options = JsonOptions::new()
    .with_type_narrowing(TypeNarrowing::Unquoted);

let actual = reader.json()
    .with_options(options)
    .to_string();
assert_eq!(actual, r#"{"a":"01","b":2,"c":"yes","d":false}"#);
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None

Don’t attempt any narrowing (all values will be strings)

use jomini::{TextTape, json::{JsonOptions, TypeNarrowing}};

let tape = TextTape::from_slice(br#"a="01" b=02 c="yes" d=no"#)?;
let reader = tape.windows1252_reader();

let options = JsonOptions::new()
    .with_type_narrowing(TypeNarrowing::None);

let actual = reader.json()
    .with_options(options)
    .to_string();
assert_eq!(actual, r#"{"a":"01","b":"02","c":"yes","d":"no"}"#);

Trait Implementations§

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impl Clone for TypeNarrowing

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fn clone(&self) -> TypeNarrowing

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for TypeNarrowing

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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 PartialEq for TypeNarrowing

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fn eq(&self, other: &TypeNarrowing) -> 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 Copy for TypeNarrowing

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impl Eq for TypeNarrowing

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impl StructuralPartialEq for TypeNarrowing

Auto Trait Implementations§

Blanket Implementations§

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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, 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> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. 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.