Enum PropValue 

#[non_exhaustive]
pub enum PropValue {
    Bool(bool),
    Int(i64),
    Uint(u64),
    Double(f64),
    Fraction(i32, i32),
    Str(String),
    Flags(Vec<String>),
}

A runtime property value. The variants mirror PropKind.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Bool(bool)

Int(i64)

Uint(u64)

Double(f64)

Fraction(i32, i32)

(numerator, denominator).

Str(String)

Flags(Vec<String>)

The nicks of a set-valued property, in the order they were written.

Implementations

impl PropValue

pub fn kind(&self) -> PropKind

The PropKind this value holds.

pub fn parse(kind: PropKind, text: &str) -> Result<PropValue, PropError>

Parse a textual value (as it appears in a gst-launch pipeline) for the given PropKind. true/false for bools; n/d for fractions; a bare integer is also accepted as a fraction n/1. The string kind takes the text verbatim.

pub fn as_bool(&self) -> Option<bool>

Borrow the value as bool, if it is one.

pub fn as_int(&self) -> Option<i64>

Borrow the value as i64, if it is an Int.

pub fn as_uint(&self) -> Option<u64>

Borrow the value as u64, if it is a Uint.

pub fn as_double(&self) -> Option<f64>

Borrow the value as f64, if it is a Double.

pub fn as_fraction(&self) -> Option<(i32, i32)>

Borrow the value as a (num, den) fraction, if it is one.

pub fn as_str(&self) -> Option<&str>

Borrow the value as &str, if it is a Str.

pub fn as_flags(&self) -> Option<&[String]>

Borrow the value as the nicks of a Flags set. The parser has already split the a+b text and (when the property declares enum_values) checked every nick, so an element only matches them.

pub fn has_flag(&self, nick: &str) -> bool

Whether a Flags set contains nick. false for any other kind.

Trait Implementations

impl Clone for PropValue

fn clone(&self) -> PropValue

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for PropValue

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

Formats the value using the given formatter.

impl PartialEq for PropValue

fn eq(&self, other: &PropValue) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for PropValue