213 lines
6.1 KiB
Plaintext
213 lines
6.1 KiB
Plaintext
/**
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* @import {
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* Code,
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* Construct,
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* Exiter,
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* State,
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* TokenizeContext,
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* Tokenizer
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* } from 'micromark-util-types'
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*/
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import { factorySpace } from 'micromark-factory-space';
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import { asciiDigit, markdownSpace } from 'micromark-util-character';
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import { blankLine } from './blank-line.js';
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import { thematicBreak } from './thematic-break.js';
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/** @type {Construct} */
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export const list = {
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continuation: {
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tokenize: tokenizeListContinuation
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},
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exit: tokenizeListEnd,
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name: 'list',
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tokenize: tokenizeListStart
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};
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/** @type {Construct} */
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const listItemPrefixWhitespaceConstruct = {
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partial: true,
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tokenize: tokenizeListItemPrefixWhitespace
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};
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/** @type {Construct} */
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const indentConstruct = {
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partial: true,
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tokenize: tokenizeIndent
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};
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// To do: `markdown-rs` parses list items on their own and later stitches them
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// together.
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/**
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* @this {TokenizeContext}
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* Context.
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* @type {Tokenizer}
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*/
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function tokenizeListStart(effects, ok, nok) {
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const self = this;
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const tail = self.events[self.events.length - 1];
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let initialSize = tail && tail[1].type === "linePrefix" ? tail[2].sliceSerialize(tail[1], true).length : 0;
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let size = 0;
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return start;
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/** @type {State} */
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function start(code) {
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const kind = self.containerState.type || (code === 42 || code === 43 || code === 45 ? "listUnordered" : "listOrdered");
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if (kind === "listUnordered" ? !self.containerState.marker || code === self.containerState.marker : asciiDigit(code)) {
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if (!self.containerState.type) {
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self.containerState.type = kind;
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effects.enter(kind, {
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_container: true
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});
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}
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if (kind === "listUnordered") {
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effects.enter("listItemPrefix");
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return code === 42 || code === 45 ? effects.check(thematicBreak, nok, atMarker)(code) : atMarker(code);
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}
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if (!self.interrupt || code === 49) {
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effects.enter("listItemPrefix");
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effects.enter("listItemValue");
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return inside(code);
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}
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}
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return nok(code);
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}
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/** @type {State} */
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function inside(code) {
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if (asciiDigit(code) && ++size < 10) {
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effects.consume(code);
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return inside;
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}
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if ((!self.interrupt || size < 2) && (self.containerState.marker ? code === self.containerState.marker : code === 41 || code === 46)) {
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effects.exit("listItemValue");
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return atMarker(code);
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}
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return nok(code);
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}
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/**
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* @type {State}
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**/
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function atMarker(code) {
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effects.enter("listItemMarker");
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effects.consume(code);
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effects.exit("listItemMarker");
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self.containerState.marker = self.containerState.marker || code;
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return effects.check(blankLine,
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// Can’t be empty when interrupting.
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self.interrupt ? nok : onBlank, effects.attempt(listItemPrefixWhitespaceConstruct, endOfPrefix, otherPrefix));
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}
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/** @type {State} */
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function onBlank(code) {
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self.containerState.initialBlankLine = true;
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initialSize++;
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return endOfPrefix(code);
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}
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/** @type {State} */
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function otherPrefix(code) {
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if (markdownSpace(code)) {
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effects.enter("listItemPrefixWhitespace");
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effects.consume(code);
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effects.exit("listItemPrefixWhitespace");
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return endOfPrefix;
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}
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return nok(code);
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}
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/** @type {State} */
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function endOfPrefix(code) {
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self.containerState.size = initialSize + self.sliceSerialize(effects.exit("listItemPrefix"), true).length;
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return ok(code);
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}
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}
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/**
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* @this {TokenizeContext}
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* Context.
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* @type {Tokenizer}
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*/
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function tokenizeListContinuation(effects, ok, nok) {
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const self = this;
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self.containerState._closeFlow = undefined;
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return effects.check(blankLine, onBlank, notBlank);
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/** @type {State} */
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function onBlank(code) {
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self.containerState.furtherBlankLines = self.containerState.furtherBlankLines || self.containerState.initialBlankLine;
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// We have a blank line.
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// Still, try to consume at most the items size.
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return factorySpace(effects, ok, "listItemIndent", self.containerState.size + 1)(code);
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}
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/** @type {State} */
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function notBlank(code) {
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if (self.containerState.furtherBlankLines || !markdownSpace(code)) {
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self.containerState.furtherBlankLines = undefined;
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self.containerState.initialBlankLine = undefined;
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return notInCurrentItem(code);
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}
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self.containerState.furtherBlankLines = undefined;
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self.containerState.initialBlankLine = undefined;
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return effects.attempt(indentConstruct, ok, notInCurrentItem)(code);
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}
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/** @type {State} */
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function notInCurrentItem(code) {
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// While we do continue, we signal that the flow should be closed.
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self.containerState._closeFlow = true;
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// As we’re closing flow, we’re no longer interrupting.
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self.interrupt = undefined;
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// Always populated by defaults.
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return factorySpace(effects, effects.attempt(list, ok, nok), "linePrefix", self.parser.constructs.disable.null.includes('codeIndented') ? undefined : 4)(code);
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}
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}
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/**
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* @this {TokenizeContext}
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* Context.
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* @type {Tokenizer}
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*/
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function tokenizeIndent(effects, ok, nok) {
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const self = this;
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return factorySpace(effects, afterPrefix, "listItemIndent", self.containerState.size + 1);
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/** @type {State} */
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function afterPrefix(code) {
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const tail = self.events[self.events.length - 1];
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return tail && tail[1].type === "listItemIndent" && tail[2].sliceSerialize(tail[1], true).length === self.containerState.size ? ok(code) : nok(code);
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}
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}
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/**
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* @this {TokenizeContext}
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* Context.
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* @type {Exiter}
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*/
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function tokenizeListEnd(effects) {
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effects.exit(this.containerState.type);
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}
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/**
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* @this {TokenizeContext}
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* Context.
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* @type {Tokenizer}
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*/
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function tokenizeListItemPrefixWhitespace(effects, ok, nok) {
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const self = this;
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// Always populated by defaults.
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return factorySpace(effects, afterPrefix, "listItemPrefixWhitespace", self.parser.constructs.disable.null.includes('codeIndented') ? undefined : 4 + 1);
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/** @type {State} */
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function afterPrefix(code) {
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const tail = self.events[self.events.length - 1];
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return !markdownSpace(code) && tail && tail[1].type === "listItemPrefixWhitespace" ? ok(code) : nok(code);
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}
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} |