67 lines
1.8 KiB
Rust
67 lines
1.8 KiB
Rust
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use crate::err::ProcessingResult;
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use crate::proc::Processor;
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// See https://www.w3.org/TR/html52/syntax.html#script-data-state and "notes/Script data.md".
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enum State {
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End,
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Normal,
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Escaped,
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DoubleEscaped,
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}
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// TODO Optimise all functions in this file.
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fn process_script_data_double_escaped(proc: &mut Processor) -> ProcessingResult<State> {
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loop {
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if chain!(proc.match_seq(b"</script").keep().matched()) {
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return Ok(State::Escaped);
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};
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if chain!(proc.match_seq(b"-->").keep().matched()) {
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return Ok(State::Normal);
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};
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proc.accept()?;
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};
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}
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fn process_script_data_escaped(proc: &mut Processor) -> ProcessingResult<State> {
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loop {
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if chain!(proc.match_seq(b"<script").keep().matched()) {
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return Ok(State::DoubleEscaped);
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};
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if chain!(proc.match_seq(b"</script").matched()) {
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return Ok(State::End);
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};
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if chain!(proc.match_seq(b"-->").keep().matched()) {
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return Ok(State::Normal);
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};
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proc.accept()?;
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};
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}
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fn process_script_data(proc: &mut Processor) -> ProcessingResult<State> {
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loop {
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if chain!(proc.match_seq(b"</script").matched()) {
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return Ok(State::End);
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};
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if chain!(proc.match_seq(b"<!--").keep().matched()) {
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return Ok(State::Escaped);
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};
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proc.accept()?;
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};
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}
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pub fn process_script(proc: &mut Processor) -> ProcessingResult<()> {
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// NOTE: See "notes/Script data.md".
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let mut state = State::Normal;
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loop {
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state = match state {
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State::End => break,
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State::Normal => process_script_data(proc)?,
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State::Escaped => process_script_data_escaped(proc)?,
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State::DoubleEscaped => process_script_data_double_escaped(proc)?,
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};
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};
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Ok(())
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}
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