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