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- export default titleFactory
-
- import assert from 'assert'
- import codes from '../character/codes.mjs'
- import markdownLineEnding from '../character/markdown-line-ending.mjs'
- import constants from '../constant/constants.mjs'
- import types from '../constant/types.mjs'
- import spaceFactory from './factory-space.mjs'
-
- // eslint-disable-next-line max-params
- function titleFactory(effects, ok, nok, type, markerType, stringType) {
- var marker
-
- return start
-
- function start(code) {
- assert(
- code === codes.quotationMark ||
- code === codes.apostrophe ||
- code === codes.leftParenthesis,
- 'expected `"`, `\'`, or `(`'
- )
- effects.enter(type)
- effects.enter(markerType)
- effects.consume(code)
- effects.exit(markerType)
- marker = code === codes.leftParenthesis ? codes.rightParenthesis : code
- return atFirstTitleBreak
- }
-
- function atFirstTitleBreak(code) {
- if (code === marker) {
- effects.enter(markerType)
- effects.consume(code)
- effects.exit(markerType)
- effects.exit(type)
- return ok
- }
-
- effects.enter(stringType)
- return atTitleBreak(code)
- }
-
- function atTitleBreak(code) {
- if (code === marker) {
- effects.exit(stringType)
- return atFirstTitleBreak(marker)
- }
-
- if (code === codes.eof) {
- return nok(code)
- }
-
- // Note: blank lines can’t exist in content.
- if (markdownLineEnding(code)) {
- effects.enter(types.lineEnding)
- effects.consume(code)
- effects.exit(types.lineEnding)
- return spaceFactory(effects, atTitleBreak, types.linePrefix)
- }
-
- effects.enter(types.chunkString, {contentType: constants.contentTypeString})
- return title(code)
- }
-
- function title(code) {
- if (code === marker || code === codes.eof || markdownLineEnding(code)) {
- effects.exit(types.chunkString)
- return atTitleBreak(code)
- }
-
- effects.consume(code)
- return code === codes.backslash ? titleEscape : title
- }
-
- function titleEscape(code) {
- if (code === marker || code === codes.backslash) {
- effects.consume(code)
- return title
- }
-
- return title(code)
- }
- }
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