64 lines
1.1 KiB
Plaintext
64 lines
1.1 KiB
Plaintext
/**
|
|
* @import {
|
|
* Construct,
|
|
* State,
|
|
* TokenizeContext,
|
|
* Tokenizer
|
|
* } from 'micromark-util-types'
|
|
*/
|
|
|
|
import { asciiPunctuation } from 'micromark-util-character';
|
|
/** @type {Construct} */
|
|
export const characterEscape = {
|
|
name: 'characterEscape',
|
|
tokenize: tokenizeCharacterEscape
|
|
};
|
|
|
|
/**
|
|
* @this {TokenizeContext}
|
|
* Context.
|
|
* @type {Tokenizer}
|
|
*/
|
|
function tokenizeCharacterEscape(effects, ok, nok) {
|
|
return start;
|
|
|
|
/**
|
|
* Start of character escape.
|
|
*
|
|
* ```markdown
|
|
* > | a\*b
|
|
* ^
|
|
* ```
|
|
*
|
|
* @type {State}
|
|
*/
|
|
function start(code) {
|
|
effects.enter("characterEscape");
|
|
effects.enter("escapeMarker");
|
|
effects.consume(code);
|
|
effects.exit("escapeMarker");
|
|
return inside;
|
|
}
|
|
|
|
/**
|
|
* After `\`, at punctuation.
|
|
*
|
|
* ```markdown
|
|
* > | a\*b
|
|
* ^
|
|
* ```
|
|
*
|
|
* @type {State}
|
|
*/
|
|
function inside(code) {
|
|
// ASCII punctuation.
|
|
if (asciiPunctuation(code)) {
|
|
effects.enter("characterEscapeValue");
|
|
effects.consume(code);
|
|
effects.exit("characterEscapeValue");
|
|
effects.exit("characterEscape");
|
|
return ok;
|
|
}
|
|
return nok(code);
|
|
}
|
|
} |