Trait ColorComponentParser

pub trait ColorComponentParser<'i> {
    type Error: 'i;

    // Provided methods
    fn parse_angle_or_number<'t>(
        &self,
        input: &mut Parser<'i, 't>,
    ) -> Result<AngleOrNumber, ParseError<'i, Self::Error>> { ... }
    fn parse_percentage<'t>(
        &self,
        input: &mut Parser<'i, 't>,
    ) -> Result<f32, ParseError<'i, Self::Error>> { ... }
    fn parse_number<'t>(
        &self,
        input: &mut Parser<'i, 't>,
    ) -> Result<f32, ParseError<'i, Self::Error>> { ... }
    fn parse_number_or_percentage<'t>(
        &self,
        input: &mut Parser<'i, 't>,
    ) -> Result<NumberOrPercentage, ParseError<'i, Self::Error>> { ... }
}

A trait that can be used to hook into how cssparser parses color components, with the intention of implementing more complicated behavior.

For example, this is used by Servo to support calc() in color.

Required Associated Types

type Error: 'i

A custom error type that can be returned from the parsing functions.

Provided Methods

fn parse_angle_or_number<'t>( &self, input: &mut Parser<'i, 't>, ) -> Result<AngleOrNumber, ParseError<'i, Self::Error>>

Parse an <angle> or <number>.

Returns the result in degrees.

fn parse_percentage<'t>( &self, input: &mut Parser<'i, 't>, ) -> Result<f32, ParseError<'i, Self::Error>>

Parse a <percentage> value.

Returns the result in a number from 0.0 to 1.0.

fn parse_number<'t>( &self, input: &mut Parser<'i, 't>, ) -> Result<f32, ParseError<'i, Self::Error>>

Parse a <number> value.

fn parse_number_or_percentage<'t>( &self, input: &mut Parser<'i, 't>, ) -> Result<NumberOrPercentage, ParseError<'i, Self::Error>>

Parse a <number> value or a <percentage> value.

Implementors