| color.rs |
General color-parsing utilities, independent on the specific color storage and parsing
implementation.
For a more complete css-color implementation take a look at cssparser-color crate, or at
Gecko's color module. |
12327 |
| cow_rc_str.rs |
|
4752 |
| from_bytes.rs |
|
2368 |
| lib.rs |
!
Implementation of [CSS Syntax Module Level 3](https://drafts.csswg.org/css-syntax/) for Rust.
# Input
Everything is based on `Parser` objects, which borrow a `&str` input.
If you have bytes (from a file, the network, or something)
and want to support character encodings other than UTF-8,
see the `stylesheet_encoding` function,
which can be used together with rust-encoding or encoding-rs.
# Conventions for parsing functions
Take (at least) a `input: &mut cssparser::Parser` parameter
Return `Result<_, ()>`
When returning `Ok(_)`,
the function must have consumed exactly the amount of input that represents the parsed value.
When returning `Err(())`, any amount of input may have been consumed.
As a consequence, when calling another parsing function, either:
Any `Err(())` return value must be propagated.
This happens by definition for tail calls,
and can otherwise be done with the `?` operator.
Or the call must be wrapped in a `Parser::try` call.
`try` takes a closure that takes a `Parser` and returns a `Result`,
calls it once,
and returns itself that same result.
If the result is `Err`,
it restores the position inside the input to the one saved before calling the closure.
Examples:
```{rust,ignore}
// 'none' | <image>
fn parse_background_image(context: &ParserContext, input: &mut Parser)
-> Result<Option<Image>, ()> {
if input.try_parse(|input| input.expect_ident_matching("none")).is_ok() {
Ok(None)
} else {
Image::parse(context, input).map(Some) // tail call
}
}
```
```{rust,ignore}
// [ <length> | <percentage> ] [ <length> | <percentage> ]?
fn parse_border_spacing(_context: &ParserContext, input: &mut Parser)
-> Result<(LengthOrPercentage, LengthOrPercentage), ()> {
let first = LengthOrPercentage::parse?;
let second = input.try_parse(LengthOrPercentage::parse).unwrap_or(first);
(first, second)
}
```
|
3717 |
| macros.rs |
|
7714 |
| nth.rs |
|
5016 |
| parser.rs |
|
40996 |
| rules_and_declarations.rs |
... |
21515 |
| serializer.rs |
")?;
dest.write_str(content)?;
dest.write_str(" |
19243 |
| size_of_tests.rs |
|
2095 |
| tests.rs |
|
44662 |
| tokenizer.rs |
` ` |
48018 |
| unicode_range.rs |
https://drafts.csswg.org/css-syntax/#urange |
5628 |