63 lines
1.2 KiB
Plaintext
63 lines
1.2 KiB
Plaintext
/**
|
|
* @typedef {import('micromark-util-types').Construct} Construct
|
|
* @typedef {import('micromark-util-types').State} State
|
|
* @typedef {import('micromark-util-types').TokenizeContext} TokenizeContext
|
|
* @typedef {import('micromark-util-types').Tokenizer} Tokenizer
|
|
*/
|
|
|
|
import {markdownLineEnding} from 'micromark-util-character'
|
|
import {codes, types} from 'micromark-util-symbol'
|
|
import {ok as assert} from 'devlop'
|
|
|
|
/** @type {Construct} */
|
|
export const hardBreakEscape = {
|
|
name: 'hardBreakEscape',
|
|
tokenize: tokenizeHardBreakEscape
|
|
}
|
|
|
|
/**
|
|
* @this {TokenizeContext}
|
|
* @type {Tokenizer}
|
|
*/
|
|
function tokenizeHardBreakEscape(effects, ok, nok) {
|
|
return start
|
|
|
|
/**
|
|
* Start of a hard break (escape).
|
|
*
|
|
* ```markdown
|
|
* > | a\
|
|
* ^
|
|
* | b
|
|
* ```
|
|
*
|
|
* @type {State}
|
|
*/
|
|
function start(code) {
|
|
assert(code === codes.backslash, 'expected `\\`')
|
|
effects.enter(types.hardBreakEscape)
|
|
effects.consume(code)
|
|
return after
|
|
}
|
|
|
|
/**
|
|
* After `\`, at eol.
|
|
*
|
|
* ```markdown
|
|
* > | a\
|
|
* ^
|
|
* | b
|
|
* ```
|
|
*
|
|
* @type {State}
|
|
*/
|
|
function after(code) {
|
|
if (markdownLineEnding(code)) {
|
|
effects.exit(types.hardBreakEscape)
|
|
return ok(code)
|
|
}
|
|
|
|
return nok(code)
|
|
}
|
|
}
|