editors/vscode/client/codeactions.js


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// convert protocol edits into editor actions while rejecting stale versions.
function convertCodeActions(vscode, results, document, expectedVersion = document.version) {
    return (Array.isArray(results) ? results : []).flatMap(result => {
        if (!result.edit) return [];
        const changes = result.edit.documentChanges || Object.entries(result.edit.changes || {}).map(([uri, edits]) => ({ textDocument: { uri }, edits }));
        if (changes.some(change => change.textDocument?.uri === document.uri.toString() && change.textDocument.version != null && change.textDocument.version !== expectedVersion)) return [];
        const edit = new vscode.WorkspaceEdit();
        let count = 0;
        for (const change of changes) {
            if (!change.textDocument || !Array.isArray(change.edits)) continue;
            const uri = vscode.Uri.parse(change.textDocument.uri);
            for (const replacement of change.edits) {
                const range = replacement.range;
                if (!range || typeof replacement.newText !== 'string') continue;
                edit.replace(uri, new vscode.Range(range.start.line, range.start.character, range.end.line, range.end.character), replacement.newText);
                count++;
            }
        }
        if (!count) return [];
        const action = new vscode.CodeAction(result.title, vscode.CodeActionKind.QuickFix);
        action.edit = edit;
        action.isPreferred = !!result.isPreferred;
        return [action];
    });
}

module.exports = { convertCodeActions };