mirror of
https://github.com/MaskRay/ccls.git
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108 lines
3.6 KiB
C++
108 lines
3.6 KiB
C++
/* Copyright 2017-2018 ccls Authors
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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==============================================================================*/
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#include "message_handler.hh"
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#include "query_utils.hh"
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namespace ccls {
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namespace {
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struct Param {
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TextDocumentIdentifier textDocument;
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Position position;
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std::string direction;
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};
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MAKE_REFLECT_STRUCT(Param, textDocument, position, direction);
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Maybe<Range> FindParent(QueryFile *file, Pos pos) {
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Maybe<Range> parent;
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for (auto [sym, refcnt] : file->symbol2refcnt)
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if (refcnt > 0 && sym.extent.Valid() && sym.extent.start <= pos &&
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pos < sym.extent.end &&
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(!parent || (parent->start == sym.extent.start
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? parent->end < sym.extent.end
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: parent->start < sym.extent.start)))
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parent = sym.extent;
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return parent;
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}
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} // namespace
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void MessageHandler::ccls_navigate(Reader &reader,
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ReplyOnce &reply) {
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Param param;
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Reflect(reader, param);
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QueryFile *file = FindFile(reply, param.textDocument.uri.GetPath());
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if (!file)
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return;
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WorkingFile *wfile = wfiles->GetFileByFilename(file->def->path);
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Position ls_pos = param.position;
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if (wfile && wfile->index_lines.size())
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if (auto line = wfile->GetIndexPosFromBufferPos(ls_pos.line,
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&ls_pos.character, false))
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ls_pos.line = *line;
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Pos pos{(int16_t)ls_pos.line, (int16_t)ls_pos.character};
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Maybe<Range> res;
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switch (param.direction[0]) {
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case 'D': {
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Maybe<Range> parent = FindParent(file, pos);
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for (auto [sym, refcnt] : file->symbol2refcnt)
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if (refcnt > 0 && pos < sym.extent.start &&
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(!parent || sym.extent.end <= parent->end) &&
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(!res || sym.extent.start < res->start))
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res = sym.extent;
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break;
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}
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case 'L':
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for (auto [sym, refcnt] : file->symbol2refcnt)
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if (refcnt > 0 && sym.extent.Valid() && sym.extent.end <= pos &&
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(!res || (res->end == sym.extent.end ? sym.extent.start < res->start
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: res->end < sym.extent.end)))
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res = sym.extent;
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break;
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case 'R': {
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Maybe<Range> parent = FindParent(file, pos);
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if (parent && parent->start.line == pos.line && pos < parent->end) {
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pos = parent->end;
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if (pos.column)
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pos.column--;
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}
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for (auto [sym, refcnt] : file->symbol2refcnt)
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if (refcnt > 0 && sym.extent.Valid() && pos < sym.extent.start &&
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(!res ||
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(sym.extent.start == res->start ? res->end < sym.extent.end
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: sym.extent.start < res->start)))
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res = sym.extent;
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break;
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}
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case 'U':
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default:
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for (auto [sym, refcnt] : file->symbol2refcnt)
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if (refcnt > 0 && sym.extent.Valid() && sym.extent.start < pos &&
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pos < sym.extent.end && (!res || res->start < sym.extent.start))
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res = sym.extent;
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break;
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}
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std::vector<Location> result;
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if (res)
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if (auto ls_range = GetLsRange(wfile, *res)) {
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Location &ls_loc = result.emplace_back();
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ls_loc.uri = param.textDocument.uri;
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ls_loc.range = *ls_range;
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}
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reply(result);
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}
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} // namespace ccls
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