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//! The string content type.
//!
//! **String** is a limited [text][] like content type which only allows
//! character escapes and character references.
//! It exists in things such as identifiers (media references, definitions),
//! titles, URLs, code (fenced) info and meta parts.
//!
//! The constructs found in string are:
//!
//! * [Character escape][crate::construct::character_escape]
//! * [Character reference][crate::construct::character_reference]
//!
//! [text]: crate::content::text
use crate::construct::partial_whitespace::resolve_whitespace;
use crate::tokenizer::{State, StateName, Tokenizer};
const MARKERS: [u8; 2] = [b'&', b'\\'];
/// Start of string.
pub fn start(tokenizer: &mut Tokenizer) -> State {
tokenizer.register_resolver("whitespace".to_string(), Box::new(resolve));
tokenizer.tokenize_state.stop = &MARKERS;
before(tokenizer)
}
/// Before string.
pub fn before(tokenizer: &mut Tokenizer) -> State {
match tokenizer.current {
None => State::Ok,
Some(b'&') => tokenizer.attempt(
StateName::CharacterReferenceStart,
State::Fn(StateName::StringBefore),
State::Fn(StateName::StringBeforeData),
),
Some(b'\\') => tokenizer.attempt(
StateName::CharacterEscapeStart,
State::Fn(StateName::StringBefore),
State::Fn(StateName::StringBeforeData),
),
_ => before_data(tokenizer),
}
}
/// At data.
pub fn before_data(tokenizer: &mut Tokenizer) -> State {
tokenizer.attempt(
StateName::DataStart,
State::Fn(StateName::StringBefore),
State::Nok,
)
}
/// Resolve whitespace.
pub fn resolve(tokenizer: &mut Tokenizer) {
resolve_whitespace(tokenizer, false, false);
}
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