61 lines
1.5 KiB
TypeScript
61 lines
1.5 KiB
TypeScript
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import {
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BlockContext,
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LeafBlock,
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LeafBlockParser,
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MarkdownConfig,
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} from "../deps.ts";
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import { tags as t } from "@lezer/highlight";
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import { TaskStateTag } from "./customtags.ts";
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// Taken from https://github.com/lezer-parser/markdown/blob/main/src/extension.ts and adapted
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class MultiStatusTaskParser implements LeafBlockParser {
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constructor(private status: string) {
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}
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nextLine() {
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return false;
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}
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finish(cx: BlockContext, leaf: LeafBlock) {
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cx.addLeafElement(
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leaf,
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cx.elt("Task", leaf.start, leaf.start + leaf.content.length, [
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cx.elt("TaskState", leaf.start, leaf.start + 2 + this.status.length, [
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cx.elt("TaskMarker", leaf.start, leaf.start + 1),
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cx.elt(
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"TaskMarker",
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leaf.start + 1 + this.status.length,
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leaf.start + 2 + this.status.length,
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),
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]),
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...cx.parser.parseInline(
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leaf.content.slice(this.status.length + 2),
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leaf.start + this.status.length + 2,
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),
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]),
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);
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return true;
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}
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}
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export const TaskList: MarkdownConfig = {
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defineNodes: [
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{ name: "Task", block: true, style: t.list },
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{ name: "TaskMarker", style: t.atom },
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{ name: "TaskState", style: TaskStateTag },
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],
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parseBlock: [{
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name: "TaskList",
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leaf(cx, leaf) {
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const match = /^\[([^\]]+)\][ \t]/.exec(leaf.content);
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return match &&
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cx.parentType().name == "ListItem"
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? new MultiStatusTaskParser(match[1])
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: null;
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},
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after: "SetextHeading",
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}],
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};
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