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|
// To do: pass token types in.
use crate::construct::partial_whitespace::start as whitespace;
use crate::tokenizer::{Code, State, StateFnResult, TokenType, Tokenizer};
/// Type of quote, if we’re in an attribure, in complete (condition 7).
#[derive(Debug, Clone, PartialEq)]
enum TitleKind {
/// In a parenthesised (`(` and `)`) title.
Paren,
/// In a double quoted (`"`) title.
Double,
/// In a single quoted (`"`) title.
Single,
}
fn kind_to_marker(kind: &TitleKind) -> char {
match kind {
TitleKind::Double => '"',
TitleKind::Single => '\'',
TitleKind::Paren => ')',
}
}
pub fn start(tokenizer: &mut Tokenizer, code: Code) -> StateFnResult {
let kind = match code {
Code::Char('"') => Some(TitleKind::Double),
Code::Char('\'') => Some(TitleKind::Single),
Code::Char('(') => Some(TitleKind::Paren),
_ => None,
};
if let Some(kind) = kind {
tokenizer.enter(TokenType::DefinitionTitle);
tokenizer.enter(TokenType::DefinitionTitleMarker);
tokenizer.consume(code);
tokenizer.exit(TokenType::DefinitionTitleMarker);
(State::Fn(Box::new(|t, c| at_first_break(t, c, kind))), None)
} else {
(State::Nok, None)
}
}
/// To do.
fn at_first_break(tokenizer: &mut Tokenizer, code: Code, kind: TitleKind) -> StateFnResult {
match code {
Code::Char(char) if char == kind_to_marker(&kind) => {
tokenizer.enter(TokenType::DefinitionTitleMarker);
tokenizer.consume(code);
tokenizer.exit(TokenType::DefinitionTitleMarker);
tokenizer.exit(TokenType::DefinitionTitle);
(State::Ok, None)
}
_ => {
tokenizer.enter(TokenType::DefinitionTitleString);
at_break(tokenizer, code, kind)
}
}
}
/// To do.
fn at_break(tokenizer: &mut Tokenizer, code: Code, kind: TitleKind) -> StateFnResult {
match code {
Code::Char(char) if char == kind_to_marker(&kind) => {
tokenizer.exit(TokenType::DefinitionTitleString);
at_first_break(tokenizer, code, kind)
}
Code::None => (State::Nok, None),
Code::CarriageReturnLineFeed | Code::Char('\r' | '\n') => {
tokenizer.enter(TokenType::LineEnding);
tokenizer.consume(code);
tokenizer.exit(TokenType::LineEnding);
(
State::Fn(Box::new(|t, c| at_break_line_start(t, c, kind))),
None,
)
}
_ => {
// To do: link.
tokenizer.enter(TokenType::ChunkString);
title(tokenizer, code, kind)
}
}
}
fn at_break_line_start(tokenizer: &mut Tokenizer, code: Code, kind: TitleKind) -> StateFnResult {
tokenizer.attempt(
|t, c| whitespace(t, c, TokenType::Whitespace),
|_ok| Box::new(|t, c| at_break_line_begin(t, c, kind)),
)(tokenizer, code)
}
fn at_break_line_begin(tokenizer: &mut Tokenizer, code: Code, kind: TitleKind) -> StateFnResult {
match code {
// Blank line not allowed.
Code::CarriageReturnLineFeed | Code::Char('\r' | '\n') => (State::Nok, None),
_ => at_break(tokenizer, code, kind),
}
}
/// To do.
fn title(tokenizer: &mut Tokenizer, code: Code, kind: TitleKind) -> StateFnResult {
match code {
Code::Char(char) if char == kind_to_marker(&kind) => {
tokenizer.exit(TokenType::ChunkString);
at_break(tokenizer, code, kind)
}
Code::None | Code::CarriageReturnLineFeed | Code::Char('\r' | '\n') => {
tokenizer.exit(TokenType::ChunkString);
at_break(tokenizer, code, kind)
}
Code::Char('\\') => {
tokenizer.consume(code);
(State::Fn(Box::new(|t, c| escape(t, c, kind))), None)
}
_ => {
tokenizer.consume(code);
(State::Fn(Box::new(|t, c| title(t, c, kind))), None)
}
}
}
/// To do.
fn escape(tokenizer: &mut Tokenizer, code: Code, kind: TitleKind) -> StateFnResult {
match code {
Code::Char(char) if char == kind_to_marker(&kind) => {
tokenizer.consume(code);
(State::Fn(Box::new(move |t, c| title(t, c, kind))), None)
}
Code::Char('\\') => {
tokenizer.consume(code);
(State::Fn(Box::new(move |t, c| title(t, c, kind))), None)
}
_ => title(tokenizer, code, kind),
}
}
|
