Trait FromValue

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

    // Required method
    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.

Dyn Compatibility§

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

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

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

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

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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

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

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

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

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

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

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

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

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

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

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

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

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

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impl<'a> FromValue<'a> for PathBuf

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impl<'a> FromValue<'a> for NonZeroI8

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impl<'a> FromValue<'a> for NonZeroI32

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impl<'a> FromValue<'a> for NonZeroI64

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impl<'a> FromValue<'a> for NonZeroU8

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impl<'a> FromValue<'a> for NonZeroU32

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impl<'a> FromValue<'a> for NonZeroU64

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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 GStr

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

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

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impl<'a> FromValue<'a> for NormalizeMode

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impl<'a> FromValue<'a> for UnicodeBreakType

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impl<'a> FromValue<'a> for UnicodeScript

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impl<'a> FromValue<'a> for UnicodeType

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impl<'a> FromValue<'a> for StrV

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impl<'a> FromValue<'a> for BindingFlags

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

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impl<'a> FromValue<'a> for IOCondition

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impl<'a> FromValue<'a> for ILong

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impl<'a> FromValue<'a> for ULong

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impl<'a> FromValue<'a> for BoxedValue

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impl<'a> FromValue<'a> for Value

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impl<'a> FromValue<'a> for Pointer

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impl<'a, 'input: 'a> FromValue<'a> for MatchInfo<'input>

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

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

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

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

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

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

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

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

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

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

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

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

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

impl<'a> FromValue<'a> for Antialias

impl<'a> FromValue<'a> for Content

impl<'a> FromValue<'a> for DeviceType

impl<'a> FromValue<'a> for Extend

impl<'a> FromValue<'a> for FillRule

impl<'a> FromValue<'a> for Filter

impl<'a> FromValue<'a> for FontSlant

impl<'a> FromValue<'a> for FontType

impl<'a> FromValue<'a> for FontWeight

impl<'a> FromValue<'a> for Format

impl<'a> FromValue<'a> for HintMetrics

impl<'a> FromValue<'a> for HintStyle

impl<'a> FromValue<'a> for LineCap

impl<'a> FromValue<'a> for LineJoin

impl<'a> FromValue<'a> for Operator

impl<'a> FromValue<'a> for PathDataType

impl<'a> FromValue<'a> for PatternType

impl<'a> FromValue<'a> for RegionOverlap

impl<'a> FromValue<'a> for SubpixelOrder

impl<'a> FromValue<'a> for SurfaceType

impl<'a> FromValue<'a> for TextClusterFlags

impl<'a> FromValue<'a> for Context

impl<'a> FromValue<'a> for Device

impl<'a> FromValue<'a> for ImageSurface

impl<'a> FromValue<'a> for Matrix

impl<'a> FromValue<'a> for PdfSurface

impl<'a> FromValue<'a> for PsSurface

impl<'a> FromValue<'a> for RecordingSurface

impl<'a> FromValue<'a> for Rectangle

impl<'a> FromValue<'a> for RectangleInt

impl<'a> FromValue<'a> for Region

impl<'a> FromValue<'a> for Surface

impl<'a> FromValue<'a> for SvgSurface

impl<'a> FromValue<'a> for XCBSurface

impl<'a> FromValue<'a> for Colorspace

impl<'a> FromValue<'a> for InterpType

impl<'a> FromValue<'a> for PixbufAlphaMode

impl<'a> FromValue<'a> for PixbufError

impl<'a> FromValue<'a> for PixbufRotation

impl<'a> FromValue<'a> for BusType

impl<'a> FromValue<'a> for ConverterResult

impl<'a> FromValue<'a> for CredentialsType

impl<'a> FromValue<'a> for DBusError

impl<'a> FromValue<'a> for DBusMessageType

impl<'a> FromValue<'a> for DriveStartStopType

impl<'a> FromValue<'a> for EmblemOrigin

impl<'a> FromValue<'a> for FileAttributeType

impl<'a> FromValue<'a> for FileMonitorEvent

impl<'a> FromValue<'a> for FileType

impl<'a> FromValue<'a> for IOErrorEnum

impl<'a> FromValue<'a> for IOModuleScopeFlags

impl<'a> FromValue<'a> for PasswordSave

impl<'a> FromValue<'a> for PollableReturn

impl<'a> FromValue<'a> for ResolverError

impl<'a> FromValue<'a> for ResolverRecordType

impl<'a> FromValue<'a> for ResourceError

impl<'a> FromValue<'a> for SocketClientEvent

impl<'a> FromValue<'a> for SocketFamily

impl<'a> FromValue<'a> for SocketProtocol

impl<'a> FromValue<'a> for SocketType

impl<'a> FromValue<'a> for TlsError

impl<'a> FromValue<'a> for TlsProtocolVersion

impl<'a> FromValue<'a> for TlsRehandshakeMode

impl<'a> FromValue<'a> for AppInfoCreateFlags

impl<'a> FromValue<'a> for ApplicationFlags

impl<'a> FromValue<'a> for AskPasswordFlags

impl<'a> FromValue<'a> for BusNameOwnerFlags

impl<'a> FromValue<'a> for ConverterFlags

impl<'a> FromValue<'a> for DBusCallFlags

impl<'a> FromValue<'a> for DBusMessageFlags

impl<'a> FromValue<'a> for DBusProxyFlags

impl<'a> FromValue<'a> for DBusServerFlags

impl<'a> FromValue<'a> for DBusSignalFlags

impl<'a> FromValue<'a> for DBusSubtreeFlags

impl<'a> FromValue<'a> for DriveStartFlags

impl<'a> FromValue<'a> for FileCopyFlags

impl<'a> FromValue<'a> for FileCreateFlags

impl<'a> FromValue<'a> for FileMeasureFlags

impl<'a> FromValue<'a> for FileMonitorFlags

impl<'a> FromValue<'a> for FileQueryInfoFlags

impl<'a> FromValue<'a> for MountMountFlags

impl<'a> FromValue<'a> for MountUnmountFlags

impl<'a> FromValue<'a> for ResourceFlags

impl<'a> FromValue<'a> for SettingsBindFlags

impl<'a> FromValue<'a> for SocketMsgFlags

impl<'a> FromValue<'a> for SubprocessFlags

impl<'a> FromValue<'a> for TestDBusFlags

impl<'a> FromValue<'a> for TlsPasswordFlags

impl<'a> FromValue<'a> for Alignment

impl<'a> FromValue<'a> for AttrType

impl<'a> FromValue<'a> for BaselineShift

impl<'a> FromValue<'a> for BidiType

impl<'a> FromValue<'a> for CoverageLevel

impl<'a> FromValue<'a> for Direction

impl<'a> FromValue<'a> for EllipsizeMode

impl<'a> FromValue<'a> for FontScale

impl<'a> FromValue<'a> for Gravity

impl<'a> FromValue<'a> for GravityHint

impl<'a> FromValue<'a> for Overline

impl<'a> FromValue<'a> for RenderPart

impl<'a> FromValue<'a> for Script

impl<'a> FromValue<'a> for Stretch

impl<'a> FromValue<'a> for Style

impl<'a> FromValue<'a> for TabAlign

impl<'a> FromValue<'a> for TextTransform

impl<'a> FromValue<'a> for Underline

impl<'a> FromValue<'a> for Variant

impl<'a> FromValue<'a> for Weight

impl<'a> FromValue<'a> for WrapMode

impl<'a> FromValue<'a> for FontMask

impl<'a> FromValue<'a> for ShapeFlags

impl<'a> FromValue<'a> for ShowFlags