next() — tailwindcss Function Reference

Architecture documentation for the next() function in named_utility_machine.rs from the tailwindcss codebase.

Function rust RustCore MachineExtractor calls 1

Entity Profile

RustCore→ MachineExtractor→ next() — tailwindcss Function Reference

Dependency Diagram

graph TD
  e0eb12b8_7e04_697d_9c8f_461b86da956a["next()"]
  435a321a_a1e2_cb4f_7579_0ca15cb86434["advance()"]
  e0eb12b8_7e04_697d_9c8f_461b86da956a -->|calls| 435a321a_a1e2_cb4f_7579_0ca15cb86434
  style e0eb12b8_7e04_697d_9c8f_461b86da956a fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

crates/oxide/src/extractor/named_utility_machine.rs lines 54–107

    fn next(&mut self, cursor: &mut cursor::Cursor<'_>) -> MachineState {
        match cursor.curr.into() {
            Class::AlphaLower => match cursor.next.into() {
                // Valid single character utility in between quotes
                //
                // E.g.: `<div class="a"></div>`
                //                    ^
                // E.g.: `<div class="a "></div>`
                //                    ^
                // E.g.: `<div class=" a"></div>`
                //                     ^
                Class::Whitespace | Class::Quote | Class::End => self.done(cursor.pos, cursor),

                // Valid start characters
                //
                // E.g.: `flex`
                //        ^
                _ => {
                    self.start_pos = cursor.pos;
                    cursor.advance();
                    self.transition::<ParsingState>().next(cursor)
                }
            },

            // Valid start characters
            //
            // E.g.: `@container`
            //        ^
            Class::At => {
                self.start_pos = cursor.pos;
                cursor.advance();
                self.transition::<ParsingState>().next(cursor)
            }

            // Valid start of a negative utility, if followed by another set of valid
            // characters. `@` as a second character is invalid.
            //
            // E.g.: `-mx-2.5`
            //        ^^
            Class::Dash => match cursor.next.into() {
                Class::AlphaLower => {
                    self.start_pos = cursor.pos;
                    cursor.advance();
                    self.transition::<ParsingState>().next(cursor)
                }

                // A dash should not be followed by anything else
                _ => MachineState::Idle,
            },

            // Everything else, is not a valid start of the utility.
            _ => MachineState::Idle,
        }
    }