ccls/src/messages/textDocument_rename.cc
Fangrui Song 9a529bd691 Delay requests if the document has not not indexed (#176)
This fixes a plethora of "not indexed" errors when the document has not been indexed.

* Message handler throws NotIndexed if not overdue
* The message is put into backlog and tagged with backlog_path
* path2backlog[path] tracks backlog associated with document `path`
* The backlog is cleared when the index is merged
* backlog[0] is forced to run if it becomes overdue
2019-03-17 18:50:25 -07:00

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/* Copyright 2017-2018 ccls Authors
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
==============================================================================*/
#include "message_handler.hh"
#include "query.hh"
namespace ccls {
namespace {
WorkspaceEdit BuildWorkspaceEdit(DB *db, WorkingFiles *wfiles, SymbolRef sym,
const std::string &new_text) {
std::unordered_map<int, TextDocumentEdit> path_to_edit;
EachOccurrence(db, sym, true, [&](Use use) {
std::optional<Location> ls_location = GetLsLocation(db, wfiles, use);
if (!ls_location)
return;
int file_id = use.file_id;
if (path_to_edit.find(file_id) == path_to_edit.end()) {
path_to_edit[file_id] = TextDocumentEdit();
QueryFile &file = db->files[file_id];
if (!file.def)
return;
const std::string &path = file.def->path;
path_to_edit[file_id].textDocument.uri = DocumentUri::FromPath(path);
WorkingFile *wf = wfiles->GetFile(path);
if (wf)
path_to_edit[file_id].textDocument.version = wf->version;
}
TextEdit &edit = path_to_edit[file_id].edits.emplace_back();
edit.range = ls_location->range;
edit.newText = new_text;
});
WorkspaceEdit edit;
for (const auto &changes : path_to_edit)
edit.documentChanges.push_back(changes.second);
return edit;
}
} // namespace
void MessageHandler::textDocument_rename(RenameParam &param, ReplyOnce &reply) {
auto [file, wf] = FindOrFail(param.textDocument.uri.GetPath(), reply);
if (!wf) {
return;
}
WorkspaceEdit result;
for (SymbolRef sym : FindSymbolsAtLocation(wf, file, param.position)) {
result = BuildWorkspaceEdit(db, wfiles, sym, param.newName);
break;
}
reply(result);
}
} // namespace ccls