mirror of
https://github.com/servo/servo.git
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311c403522
This is just a code health change. I want to move it away to keep matching.rs as simple as possible.
216 lines
6.5 KiB
Rust
216 lines
6.5 KiB
Rust
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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//! Calculate [specified][specified] and [computed values][computed] from a
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//! tree of DOM nodes and a set of stylesheets.
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//!
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//! [computed]: https://drafts.csswg.org/css-cascade/#computed
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//! [specified]: https://drafts.csswg.org/css-cascade/#specified
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//!
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//! In particular, this crate contains the definitions of supported properties,
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//! the code to parse them into specified values and calculate the computed
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//! values based on the specified values, as well as the code to serialize both
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//! specified and computed values.
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//!
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//! The main entry point is [`recalc_style_at`][recalc_style_at].
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//!
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//! [recalc_style_at]: traversal/fn.recalc_style_at.html
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//!
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//! Major dependencies are the [cssparser][cssparser] and [selectors][selectors]
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//! crates.
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//!
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//! [cssparser]: ../cssparser/index.html
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//! [selectors]: ../selectors/index.html
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#![deny(warnings)]
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#![deny(missing_docs)]
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// FIXME(bholley): We need to blanket-allow unsafe code in order to make the
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// gecko atom!() macro work. When Rust 1.14 is released [1], we can uncomment
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// the commented-out attributes in regen_atoms.py and go back to denying unsafe
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// code by default.
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//
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// [1] https://github.com/rust-lang/rust/issues/15701#issuecomment-251900615
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//#![deny(unsafe_code)]
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#![allow(unused_unsafe)]
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#![recursion_limit = "500"] // For define_css_keyword_enum! in -moz-appearance
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extern crate app_units;
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extern crate arrayvec;
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extern crate atomic_refcell;
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extern crate bit_vec;
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#[macro_use]
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extern crate bitflags;
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#[allow(unused_extern_crates)] extern crate byteorder;
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#[cfg(feature = "gecko")] #[macro_use] #[no_link] extern crate cfg_if;
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#[macro_use] extern crate cssparser;
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extern crate euclid;
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extern crate fnv;
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#[cfg(feature = "gecko")] #[macro_use] pub mod gecko_string_cache;
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#[cfg(feature = "servo")] extern crate heapsize;
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#[cfg(feature = "servo")] #[macro_use] extern crate heapsize_derive;
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extern crate itoa;
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#[cfg(feature = "servo")] #[macro_use] extern crate html5ever;
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#[macro_use]
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extern crate lazy_static;
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#[macro_use]
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extern crate log;
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#[allow(unused_extern_crates)]
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#[macro_use]
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extern crate matches;
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#[cfg(feature = "gecko")]
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#[macro_use]
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pub extern crate nsstring_vendor as nsstring;
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#[cfg(feature = "gecko")] extern crate num_cpus;
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extern crate num_integer;
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extern crate num_traits;
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extern crate ordered_float;
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extern crate parking_lot;
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extern crate pdqsort;
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#[cfg(feature = "gecko")] extern crate precomputed_hash;
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extern crate rayon;
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extern crate selectors;
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#[cfg(feature = "servo")] extern crate serde;
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#[cfg(feature = "servo")] #[macro_use] extern crate serde_derive;
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#[cfg(feature = "servo")] #[macro_use] extern crate servo_atoms;
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#[cfg(feature = "servo")] extern crate servo_config;
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#[cfg(feature = "servo")] extern crate servo_url;
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extern crate smallvec;
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#[macro_use]
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extern crate style_derive;
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#[macro_use]
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extern crate style_traits;
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extern crate time;
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#[allow(unused_extern_crates)]
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extern crate unicode_segmentation;
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#[macro_use]
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mod macros;
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pub mod animation;
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#[allow(missing_docs)] // TODO.
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#[cfg(feature = "servo")] pub mod attr;
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pub mod bezier;
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pub mod bloom;
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pub mod cache;
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pub mod cascade_info;
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pub mod context;
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pub mod counter_style;
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pub mod custom_properties;
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pub mod data;
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pub mod document_condition;
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pub mod dom;
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pub mod element_state;
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#[cfg(feature = "servo")] mod encoding_support;
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pub mod error_reporting;
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pub mod font_face;
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pub mod font_metrics;
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#[cfg(feature = "gecko")] #[allow(unsafe_code)] pub mod gecko;
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#[cfg(feature = "gecko")] #[allow(unsafe_code)] pub mod gecko_bindings;
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pub mod keyframes;
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#[allow(missing_docs)] // TODO.
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pub mod logical_geometry;
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pub mod matching;
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pub mod media_queries;
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pub mod parallel;
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pub mod parser;
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pub mod restyle_hints;
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pub mod rule_tree;
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pub mod scoped_tls;
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pub mod selector_parser;
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pub mod shared_lock;
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pub mod sharing;
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pub mod stylist;
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#[cfg(feature = "servo")] #[allow(unsafe_code)] pub mod servo;
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pub mod sequential;
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pub mod sink;
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pub mod str;
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pub mod style_adjuster;
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pub mod stylearc;
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pub mod stylesheet_set;
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pub mod stylesheets;
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pub mod supports;
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pub mod thread_state;
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pub mod timer;
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pub mod traversal;
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#[macro_use]
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#[allow(non_camel_case_types)]
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pub mod values;
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pub mod viewport;
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use std::fmt;
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use style_traits::ToCss;
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#[cfg(feature = "gecko")] pub use gecko_string_cache as string_cache;
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#[cfg(feature = "gecko")] pub use gecko_string_cache::Atom;
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#[cfg(feature = "gecko")] pub use gecko_string_cache::Namespace;
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#[cfg(feature = "gecko")] pub use gecko_string_cache::Atom as Prefix;
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#[cfg(feature = "gecko")] pub use gecko_string_cache::Atom as LocalName;
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#[cfg(feature = "servo")] pub use servo_atoms::Atom;
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#[cfg(feature = "servo")] pub use html5ever::Prefix;
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#[cfg(feature = "servo")] pub use html5ever::LocalName;
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#[cfg(feature = "servo")] pub use html5ever::Namespace;
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/// The CSS properties supported by the style system.
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/// Generated from the properties.mako.rs template by build.rs
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#[macro_use]
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#[allow(unsafe_code)]
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#[deny(missing_docs)]
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pub mod properties {
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include!(concat!(env!("OUT_DIR"), "/properties.rs"));
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}
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#[cfg(feature = "gecko")]
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#[allow(unsafe_code, missing_docs)]
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pub mod gecko_properties {
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include!(concat!(env!("OUT_DIR"), "/gecko_properties.rs"));
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}
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macro_rules! reexport_computed_values {
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( $( $name: ident )+ ) => {
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/// Types for [computed values][computed].
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///
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/// [computed]: https://drafts.csswg.org/css-cascade/#computed
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pub mod computed_values {
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$(
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pub use properties::longhands::$name::computed_value as $name;
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)+
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// Don't use a side-specific name needlessly:
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pub use properties::longhands::border_top_style::computed_value as border_style;
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}
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}
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}
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longhand_properties_idents!(reexport_computed_values);
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/// Pointer equality
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///
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/// FIXME: Remove this and use std::ptr::eq once we require Rust 1.17
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#[inline]
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pub fn ptr_eq<T: ?Sized>(a: *const T, b: *const T) -> bool {
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a == b
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}
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/// Serializes as CSS a comma-separated list of any `T` that supports being
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/// serialized as CSS.
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pub fn serialize_comma_separated_list<W, T>(dest: &mut W,
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list: &[T])
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-> fmt::Result
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where W: fmt::Write,
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T: ToCss,
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{
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if list.is_empty() {
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return Ok(());
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}
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try!(list[0].to_css(dest));
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for item in list.iter().skip(1) {
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try!(write!(dest, ", "));
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try!(item.to_css(dest));
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}
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Ok(())
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}
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