83 lines
2 KiB
JavaScript
83 lines
2 KiB
JavaScript
/**
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* @typedef {import('micromark-util-types').InitialConstruct} InitialConstruct
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* @typedef {import('micromark-util-types').Initializer} Initializer
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* @typedef {import('micromark-util-types').State} State
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* @typedef {import('micromark-util-types').TokenizeContext} TokenizeContext
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*/
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import {blankLine, content} from 'micromark-core-commonmark'
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import {factorySpace} from 'micromark-factory-space'
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import {markdownLineEnding} from 'micromark-util-character'
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import {codes, types} from 'micromark-util-symbol'
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import {ok as assert} from 'devlop'
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/** @type {InitialConstruct} */
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export const flow = {tokenize: initializeFlow}
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/**
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* @this {TokenizeContext}
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* @type {Initializer}
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*/
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function initializeFlow(effects) {
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const self = this
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const initial = effects.attempt(
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// Try to parse a blank line.
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blankLine,
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atBlankEnding,
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// Try to parse initial flow (essentially, only code).
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effects.attempt(
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this.parser.constructs.flowInitial,
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afterConstruct,
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factorySpace(
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effects,
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effects.attempt(
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this.parser.constructs.flow,
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afterConstruct,
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effects.attempt(content, afterConstruct)
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),
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types.linePrefix
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)
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)
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)
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return initial
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/** @type {State} */
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function atBlankEnding(code) {
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assert(
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code === codes.eof || markdownLineEnding(code),
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'expected eol or eof'
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)
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if (code === codes.eof) {
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effects.consume(code)
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return
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}
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effects.enter(types.lineEndingBlank)
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effects.consume(code)
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effects.exit(types.lineEndingBlank)
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self.currentConstruct = undefined
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return initial
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}
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/** @type {State} */
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function afterConstruct(code) {
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assert(
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code === codes.eof || markdownLineEnding(code),
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'expected eol or eof'
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)
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if (code === codes.eof) {
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effects.consume(code)
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return
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}
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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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self.currentConstruct = undefined
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return initial
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}
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}
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