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71 lines
1.6 KiB
JavaScript
71 lines
1.6 KiB
JavaScript
export var tokenize = initializeFlow
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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 types from '../constant/types.mjs'
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import content from '../tokenize/content.mjs'
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import spaceFactory from '../tokenize/factory-space.mjs'
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import blank from '../tokenize/partial-blank-line.mjs'
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function initializeFlow(effects) {
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var self = this
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var initial = effects.attempt(
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// Try to parse a blank line.
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blank,
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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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spaceFactory(
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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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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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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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