//! `userSpaceOnUse` or `objectBoundingBox` values.

use cssparser::Parser;

use crate::error::*;

use crate::parse_identifiers;

use crate::parsers::Parse;

/// Defines the units to be used for things that can consider a

/// coordinate system in terms of the current transformation, or in

/// terms of the current object's bounding box.

pub enum CoordUnits {

    UserSpaceOnUse,

    ObjectBoundingBox,

}

impl Parse for CoordUnits {

            parser,

            "userSpaceOnUse" => CoordUnits::UserSpaceOnUse,

            "objectBoundingBox" => CoordUnits::ObjectBoundingBox,

}

/// Creates a newtype around `CoordUnits`, with a default value.

///

/// SVG attributes that can take `userSpaceOnUse` or

/// `objectBoundingBox` values often have different default values

/// depending on the type of SVG element.  We use this macro to create

/// a newtype for each SVG element and attribute that requires values

/// of this type.  The newtype provides an `impl Default` with the

/// specified `$default` value.

#[doc(hidden)]

#[macro_export]

macro_rules! coord_units {

    ($name:ident, $default:expr) => {

        impl Default for $name {

        }

        impl From<$name> for CoordUnits {

                u.0

        }

        impl $crate::parsers::Parse for $name {

                parser: &mut ::cssparser::Parser<'i, '_>,

            ) -> Result<Self, $crate::error::ParseError<'i>> {

        }

    };

}

#[cfg(test)]

mod tests {

    use super::*;

    #[test]

    #[test]

            MyUnits(CoordUnits::UserSpaceOnUse)

        );

            MyUnits(CoordUnits::ObjectBoundingBox)

        );

    #[test]

    #[test]

            CoordUnits::ObjectBoundingBox

        );

}