Trait glib::value::FromValue

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pub unsafe trait FromValue<'a>: Sized {
    type Checker: ValueTypeChecker;

    unsafe fn from_value(value: &'a Value) -> Self;
}
Expand description

Trait to retrieve the contained value from a Value.

Usually this would not be used directly but from the get function on a Value

Required Associated Types§

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type Checker: ValueTypeChecker

Value type checker.

Required Methods§

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unsafe fn from_value(value: &'a Value) -> Self

Get the contained value from a Value.

Safety

Self::Checker::check() must be called first and must not fail.

Implementations on Foreign Types§

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impl<'a> FromValue<'a> for &'a [GStrPtr]

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type Checker = GenericValueTypeChecker<&'a [GStrPtr]>

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unsafe fn from_value(value: &'a Value) -> Self

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impl<'a, 'b> FromValue<'a> for Vec<&'b FlagsValue>

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type Checker = FlagsTypeChecker

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unsafe fn from_value(value: &'a Value) -> Self

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impl<'a> FromValue<'a> for Vec<GString>

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impl<'a, T, C, E> FromValue<'a> for Option<T>where
    T: FromValue<'a, Checker = C> + StaticType,
    C: ValueTypeChecker<Error = ValueTypeMismatchOrNoneError<E>>,
    E: Error + Send + Sized + 'static,

Blanket implementation for all optional types.

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type Checker = ValueTypeOrNoneChecker<T, C, E>

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unsafe fn from_value(value: &'a Value) -> Self

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impl<'a> FromValue<'a> for &'a str

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type Checker = GenericValueTypeOrNoneChecker<&'a str>

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unsafe fn from_value(value: &'a Value) -> Self

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impl<'a> FromValue<'a> for String

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impl<'a> FromValue<'a> for Vec<String>

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impl<'a> FromValue<'a> for bool

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type Checker = GenericValueTypeChecker<bool>

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unsafe fn from_value(value: &'a Value) -> Self

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impl<'a> FromValue<'a> for NonNull<Pointee>

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impl<'a> FromValue<'a> for i8

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type Checker = GenericValueTypeChecker<i8>

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unsafe fn from_value(value: &'a Value) -> Self

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impl<'a> FromValue<'a> for u8

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type Checker = GenericValueTypeChecker<u8>

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unsafe fn from_value(value: &'a Value) -> Self

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impl<'a> FromValue<'a> for i32

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type Checker = GenericValueTypeChecker<i32>

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unsafe fn from_value(value: &'a Value) -> Self

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impl<'a> FromValue<'a> for u32

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type Checker = GenericValueTypeChecker<u32>

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unsafe fn from_value(value: &'a Value) -> Self

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impl<'a> FromValue<'a> for i64

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type Checker = GenericValueTypeChecker<i64>

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unsafe fn from_value(value: &'a Value) -> Self

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impl<'a> FromValue<'a> for u64

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type Checker = GenericValueTypeChecker<u64>

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unsafe fn from_value(value: &'a Value) -> Self

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impl<'a> FromValue<'a> for f32

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type Checker = GenericValueTypeChecker<f32>

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unsafe fn from_value(value: &'a Value) -> Self

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impl<'a> FromValue<'a> for f64

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type Checker = GenericValueTypeChecker<f64>

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unsafe fn from_value(value: &'a Value) -> Self

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impl<'a> FromValue<'a> for char

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type Checker = CharTypeChecker

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unsafe fn from_value(value: &'a Value) -> Self

Implementors§