Enum style::values::Impossible

pub enum Impossible {}

Convenience void type to disable some properties and values through types.

Trait Implementations

impl MallocSizeOf for Impossible

fn size_of(&self, ops: &mut MallocSizeOfOps) -> usize

Measure the heap usage of all descendant heap-allocated structures, but not the space taken up by the value itself.

impl Clone for Impossible

fn clone(&self) -> Impossible

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Copy for Impossible

impl Debug for Impossible

fn fmt(&self, __arg_0: &mut Formatter) -> Result

Formats the value using the given formatter.

impl PartialEq for Impossible

fn eq(&self, __arg_0: &Impossible) -> bool

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=.

impl ToComputedValue for Impossible

type ComputedValue = Impossible

The computed value type we're going to be converted to.

fn to_computed_value(&self, context: &Context) -> Self::ComputedValue

Convert a specified value to a computed value, using itself and the data inside the Context.

fn from_computed_value(computed: &Self::ComputedValue) -> Self

Convert a computed value to specified value form.

impl ToCss for Impossible

fn to_css<W>(&self, dest: &mut W) -> Result where
    W: Write, 

Serialize self in CSS syntax, writing to dest.

fn to_css_string(&self) -> String

Serialize self in CSS syntax and return a string.

impl Parse for Impossible

fn parse<'i, 't>(
    _context: &ParserContext,
    input: &mut Parser<'i, 't>
) -> Result<Self, ParseError<'i>>

Parse a value of this type.