ruby.rs — tailwindcss Source File

Source Code

// See: - https://docs.ruby-lang.org/en/3.4/syntax/literals_rdoc.html#label-Percent+Literals
//      - https://docs.ruby-lang.org/en/3.4/syntax/literals_rdoc.html#label-25w+and+-25W-3A+String-Array+Literals
use crate::cursor;
use crate::extractor::bracket_stack;
use crate::extractor::pre_processors::pre_processor::PreProcessor;
use crate::scanner::pre_process_input;
use bstr::ByteVec;
use regex::{Regex, RegexBuilder};
use std::sync;

static TEMPLATE_START_REGEX: sync::LazyLock<Regex> = sync::LazyLock::new(|| {
    RegexBuilder::new(r#"\s*([a-z0-9_-]+)_template\s*<<[-~]?([A-Z]+)$"#)
        .multi_line(true)
        .build()
        .unwrap()
});

static TEMPLATE_END_REGEX: sync::LazyLock<Regex> = sync::LazyLock::new(|| {
    RegexBuilder::new(r#"^\s*([A-Z]+)"#)
        .multi_line(true)
        .build()
        .unwrap()
});

#[derive(Debug, Default)]
pub struct Ruby;

impl PreProcessor for Ruby {
    fn process(&self, content: &[u8]) -> Vec<u8> {
        let len = content.len();
        let mut result = content.to_vec();
        let mut cursor = cursor::Cursor::new(content);
        let mut bracket_stack = bracket_stack::BracketStack::default();

        // Extract embedded template languages
        // https://viewcomponent.org/guide/templates.html#interpolations
        let content_as_str = std::str::from_utf8(content).unwrap();

        let starts = TEMPLATE_START_REGEX
            .captures_iter(content_as_str)
            .collect::<Vec<_>>();
        let ends = TEMPLATE_END_REGEX
            .captures_iter(content_as_str)
            .collect::<Vec<_>>();

        for start in starts.iter() {
            // The language for this block
            let lang = start.get(1).unwrap().as_str();

            // The HEREDOC delimiter
            let delimiter_start = start.get(2).unwrap().as_str();

            // Where the "body" starts for the HEREDOC block
            let body_start = start.get(0).unwrap().end();

            // Look through all of the ends to find a matching language
            for end in ends.iter() {
                // 1. This must appear after the start
                let body_end = end.get(0).unwrap().start();
                if body_end < body_start {
// ... (371 more lines)