Trait cssparser::DeclarationParser

pub trait DeclarationParser {
    type Declaration;
    fn parse_value(&mut self,
                   name: &str,
                   input: &mut Parser)
                   -> Result<Self::Declaration, ()>;
}

A trait to provide various parsing of declaration values.

For example, there could be different implementations for property declarations in style rules and for descriptors in @font-face rules.

Associated Types

type Declaration

The finished representation of a declaration.

Required Methods

fn parse_value(&mut self,
               name: &str,
               input: &mut Parser)
               -> Result<Self::Declaration, ()>

Parse the value of a declaration with the given name.

Return the finished representation for the declaration as returned by DeclarationListParser::next, or Err(()) to ignore the entire declaration as invalid.

Declaration name matching should be case-insensitive in the ASCII range. This can be done with std::ascii::Ascii::eq_ignore_ascii_case, or with the match_ignore_ascii_case! macro.

The given input is a "delimited" parser that ends wherever the declaration value should end. (In declaration lists, before the next semicolon or end of the current block.)

If !important can be used in a given context, input.try(parse_important).is_ok() should be used at the end of the implementation of this method and the result should be part of the return value.

Implementors