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108 lines
3.3 KiB
C++
108 lines
3.3 KiB
C++
#include "message_handler.h"
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#include "pipeline.hh"
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#include "query_utils.h"
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using namespace ccls;
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namespace {
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MethodType kMethodType = "textDocument/hover";
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// Find the comments for |sym|, if any.
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std::optional<lsMarkedString> GetComments(DB* db, SymbolRef sym) {
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std::optional<lsMarkedString> ret;
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WithEntity(db, sym, [&](const auto& entity) {
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if (const auto* def = entity.AnyDef())
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if (def->comments[0]) {
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lsMarkedString m;
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m.value = def->comments;
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ret = m;
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}
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});
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return ret;
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}
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// Returns the hover or detailed name for `sym`, if any.
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std::optional<lsMarkedString> GetHoverOrName(DB* db,
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LanguageId lang,
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SymbolRef sym) {
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std::optional<lsMarkedString> ret;
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WithEntity(db, sym, [&](const auto& entity) {
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if (const auto* def = entity.AnyDef()) {
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lsMarkedString m;
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m.language = LanguageIdentifier(lang);
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if (def->hover[0]) {
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m.value = def->hover;
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ret = m;
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} else if (def->detailed_name[0]) {
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m.value = def->detailed_name;
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ret = m;
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}
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}
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});
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return ret;
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}
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struct In_TextDocumentHover : public RequestInMessage {
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MethodType GetMethodType() const override { return kMethodType; }
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lsTextDocumentPositionParams params;
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};
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MAKE_REFLECT_STRUCT(In_TextDocumentHover, id, params);
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REGISTER_IN_MESSAGE(In_TextDocumentHover);
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struct Out_TextDocumentHover : public lsOutMessage<Out_TextDocumentHover> {
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struct Result {
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std::vector<lsMarkedString> contents;
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std::optional<lsRange> range;
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};
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lsRequestId id;
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std::optional<Result> result;
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};
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MAKE_REFLECT_STRUCT(Out_TextDocumentHover::Result, contents, range);
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MAKE_REFLECT_STRUCT_MANDATORY_OPTIONAL(Out_TextDocumentHover,
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jsonrpc,
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id,
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result);
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struct Handler_TextDocumentHover : BaseMessageHandler<In_TextDocumentHover> {
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MethodType GetMethodType() const override { return kMethodType; }
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void Run(In_TextDocumentHover* request) override {
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auto& params = request->params;
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QueryFile* file;
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if (!FindFileOrFail(db, project, request->id,
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params.textDocument.uri.GetPath(), &file))
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return;
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WorkingFile* working_file =
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working_files->GetFileByFilename(file->def->path);
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Out_TextDocumentHover out;
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out.id = request->id;
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for (SymbolRef sym :
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FindSymbolsAtLocation(working_file, file, params.position)) {
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// Found symbol. Return hover.
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std::optional<lsRange> ls_range = GetLsRange(
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working_files->GetFileByFilename(file->def->path), sym.range);
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if (!ls_range)
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continue;
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std::optional<lsMarkedString> comments = GetComments(db, sym);
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std::optional<lsMarkedString> hover =
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GetHoverOrName(db, file->def->language, sym);
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if (comments || hover) {
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out.result = Out_TextDocumentHover::Result();
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out.result->range = *ls_range;
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if (comments)
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out.result->contents.push_back(*comments);
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if (hover)
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out.result->contents.push_back(*hover);
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break;
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}
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}
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pipeline::WriteStdout(kMethodType, out);
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}
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};
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REGISTER_MESSAGE_HANDLER(Handler_TextDocumentHover);
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} // namespace
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