float_pigment_css/
lib.rs

//! CSS parser with a style sheet manager.
//!
//! Note: it is not a full web-compatible CSS parser because it supports a subset of CSS selectors and properties.
//!
//! ### Main Workflow
//!
//! The CSS parser is designed to be used in high-level UI frameworks. The main workflow:
//!
//! 1. Create a `StyleSheetGroup`.
//! 1. Parsing CSS text into a `StyleSheet` and added to the `StyleSheetGroup`.
//! 1. Create a `StyleQuery`.
//! 1. Run the `StyleQuery` with `StyleSheetGroup::query_matched_rules` and get a `MatchedRuleList`.
//! 1. Create a `NodeProperties` with `NodeProperties::new`.
//! 1. Merge the `MatchedRuleList` into `NodeProperties` with `MatchedRuleList::merge_node_properties`.
//!
//! The result `NodeProperties` contains all supported CSS properties.
//!
//! ### The Binary Format
//!
//! The `StyleSheet` can be serialized into a specialized "bincode" format. (Note that it is not the same format as the `bincode` crate.)
//! This binary format can be deserialized with great performance, so it can be used as the cache of static style sheet text.
//! It also has compatibilities across different versions of this crate.

#![cfg_attr(not(feature = "std"), no_std)]
#![warn(missing_docs)]

#[macro_use]
extern crate alloc;
#[macro_use]
extern crate log;

#[allow(unused_imports)]
use alloc::{boxed::Box, vec::Vec};

pub use fixed;
pub use num_traits;
#[cfg(feature = "wasm-entrance")]
use wasm_bindgen::prelude::*;

#[cfg(debug_assertions)]
mod check_trait;
mod group;
mod path;
pub use group::{StyleSheetGroup, StyleSheetImportIndex, StyleSheetResource, TEMP_SHEET_INDEX};
pub mod sheet;
pub use sheet::{LinkedStyleSheet, StyleSheet};
pub mod property;
pub mod query;
mod resolve_font_size;
pub mod typing;
mod typing_stringify;
pub use query::{EnvValues, MediaQueryStatus, StyleQuery};
// #[cfg(not(target_arch = "wasm32"))]
pub mod ffi;
pub mod length_num;
pub mod parser;

#[cfg(debug_assertions)]
use check_trait::CompatibilityCheck;

#[cfg(all(target_arch = "wasm32", feature = "wasm-entrance"))]
fn init_logger() {
    use std::sync::Once;
    static INIT: Once = Once::new();
    INIT.call_once(|| {
        console_log::init_with_level(log::Level::Debug).unwrap();
    });
}

#[cfg(all(target_arch = "wasm32", feature = "wasm-entrance"))]
#[wasm_bindgen(start)]
pub fn wasm_main() {
    init_logger();
    console_error_panic_hook::set_once();
}

#[doc(hidden)]
#[cfg(all(feature = "serialize", feature = "serialize_json"))]
#[cfg_attr(
    feature = "wasm-entrance",
    wasm_bindgen(js_name = "compileStyleSheetToJson")
)]
pub fn compile_style_sheet_to_json(filename: &str, style_text: &str) -> String {
    let (style_sheet, warnings) = parser::parse_style_sheet(filename, style_text);
    for w in warnings {
        warn!(
            "{} (at {:?}, from line {:?} column {:?} to line {:?} column {:?})",
            w.message.as_str(),
            filename,
            w.start_line,
            w.start_col,
            w.end_line,
            w.end_col,
        );
    }
    style_sheet.serialize_json()
}

/// Serialize CSS to the binary format.
#[cfg(feature = "serialize")]
#[cfg_attr(
    feature = "wasm-entrance",
    wasm_bindgen(js_name = "compileStyleSheetToBincode")
)]
pub fn compile_style_sheet_to_bincode(filename: &str, style_text: &str) -> Vec<u8> {
    let (style_sheet, warnings) = parser::parse_style_sheet(filename, style_text);
    for w in warnings {
        warn!(
            "{} (at {:?}, from line {:?} column {:?} to line {:?} column {:?})",
            w.message.as_str(),
            filename,
            w.start_line,
            w.start_col,
            w.end_line,
            w.end_col,
        );
    }
    style_sheet.serialize_bincode()
}

/// Deserialize bincode from the binary format.
#[cfg(feature = "deserialize")]
#[cfg_attr(
    feature = "wasm-entrance",
    wasm_bindgen(js_name = "styleSheetFromBincode")
)]
pub fn style_sheet_from_bincode(bincode: Vec<u8>) -> StyleSheetGroup {
    let ptr = Box::into_raw(bincode.into_boxed_slice());
    let mut ssg = StyleSheetGroup::new();
    let mut resource = StyleSheetResource::new();
    unsafe {
        resource.add_bincode_zero_copy("", ptr, move || drop(Box::from_raw(ptr)));
    }
    ssg.append_from_resource(&resource, "", None);
    ssg
}
float_pigment_css/lib.rs

float_pigment_css/
lib.rs
