utility_machine.rs — tailwindcss Source File

Source Code

use crate::cursor;
use crate::extractor::arbitrary_property_machine::ArbitraryPropertyMachine;
use crate::extractor::machine::{Machine, MachineState};
use crate::extractor::modifier_machine::ModifierMachine;
use crate::extractor::named_utility_machine::NamedUtilityMachine;
use classification_macros::ClassifyBytes;

#[derive(Debug, Default)]
pub struct UtilityMachine {
    /// Start position of the utility
    start_pos: usize,

    /// Whether the legacy important marker `!` was used
    legacy_important: bool,

    arbitrary_property_machine: ArbitraryPropertyMachine,
    named_utility_machine: NamedUtilityMachine,
    modifier_machine: ModifierMachine,
}

impl Machine for UtilityMachine {
    #[inline(always)]
    fn reset(&mut self) {
        self.start_pos = 0;
        self.legacy_important = false;
    }

    #[inline]
    fn next(&mut self, cursor: &mut cursor::Cursor<'_>) -> MachineState {
        match cursor.curr.into() {
            // LEGACY: Important marker
            Class::Exclamation => {
                self.legacy_important = true;

                match cursor.next.into() {
                    // Start of an arbitrary property
                    //
                    // E.g.: `![color:red]`
                    //        ^
                    Class::OpenBracket => {
                        self.start_pos = cursor.pos;
                        cursor.advance();
                        self.parse_arbitrary_property(cursor)
                    }

                    // Start of a named utility
                    //
                    // E.g.: `!flex`
                    //        ^
                    _ => {
                        self.start_pos = cursor.pos;
                        cursor.advance();
                        self.parse_named_utility(cursor)
                    }
                }
            }

            // Start of an arbitrary property
            //
            // E.g.: `[color:red]`
// ... (287 more lines)