import { List } from '../utils/List.js'; function getFirstMatchNode(matchNode) { if ('node' in matchNode) { return matchNode.node; } return getFirstMatchNode(matchNode.match[0]); } function getLastMatchNode(matchNode) { if ('node' in matchNode) { return matchNode.node; } return getLastMatchNode(matchNode.match[matchNode.match.length - 1]); } export function matchFragments(lexer, ast, match, type, name) { function findFragments(matchNode) { if (matchNode.syntax !== null && matchNode.syntax.type === type && matchNode.syntax.name === name) { const start = getFirstMatchNode(matchNode); const end = getLastMatchNode(matchNode); lexer.syntax.walk(ast, function(node, item, list) { if (node === start) { const nodes = new List(); do { nodes.appendData(item.data); if (item.data === end) { break; } item = item.next; } while (item !== null); fragments.push({ parent: list, nodes }); } }); } if (Array.isArray(matchNode.match)) { matchNode.match.forEach(findFragments); } } const fragments = []; if (match.matched !== null) { findFragments(match.matched); } return fragments; }