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Fold Decodal delimited blocks from opener

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Keisuke Hirata 2026-07-08 23:55:04 +09:00
parent ee031bd2e8
commit 720c71157e
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1 changed files with 13 additions and 4 deletions
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17
site/decodal-site/src/lib/codemirror/decodal.js
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@ -1,4 +1,4 @@
import { LRLanguage, LanguageSupport, HighlightStyle, syntaxHighlighting, foldNodeProp, foldInside, indentNodeProp } from '@codemirror/language';
import { LRLanguage, LanguageSupport, HighlightStyle, syntaxHighlighting, foldNodeProp, indentNodeProp } from '@codemirror/language';
import { styleTags, tags as t } from '@lezer/highlight';
import { parser } from './decodal-parser.js';
@ -25,13 +25,22 @@ const parserWithMetadata = parser.configure({
LetExpression: context => context.column(context.node.from) + context.unit,
}),
foldNodeProp.add({
Object: foldInside,
Array: foldInside,
MatchExpression: foldInside,
Object: foldDelimited('lBrace', 'rBrace'),
Array: foldDelimited('lBracket', 'rBracket'),
MatchExpression: foldDelimited('lBrace', 'rBrace'),
}),
],
});
function foldDelimited(openName, closeName) {
return (node) => {
const open = node.getChild(openName);
const close = node.getChild(closeName);
if (!open || !close || open.to >= close.from) return null;
return { from: open.to, to: close.from };
};
}
export const decodalLanguage = LRLanguage.define({
parser: parserWithMetadata,
languageData: {