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LanguageServers/Cpp: Add 'FindDeclaration' capability

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The C++ LanguageServer can now find the matching declaration for
variable names, function calls, struct/class types and properties.

When clicking on one of the above with Ctrl pressed, HackStudio will
ask the language server to find a matching declaration, and navigate
to the result in the Editor. :^)
This commit is contained in:
Itamar 2021-02-20 12:27:39 +02:00 • committed by Andreas Kling
parent d3ff82ba80
commit 5bc82c0185
12 changed files with 150 additions and 38 deletions
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21
Userland/DevTools/HackStudio/LanguageServers/Cpp/ClientConnection.cpp
View file

@ -128,7 +128,7 @@ void ClientConnection::handle(const Messages::LanguageServer::SetFileContent& me
void ClientConnection::handle(const Messages::LanguageServer::SetAutoCompleteMode& message)
{
#ifdef DEBUG_CPP_LANGUAGE_SERVER
#ifdef CPP_LANGUAGE_SERVER_DEBUG
dbgln("SetAutoCompleteMode: {}", message.mode());
#endif
if (message.mode() == "Parser")
@ -137,4 +137,23 @@ void ClientConnection::handle(const Messages::LanguageServer::SetAutoCompleteMod
m_autocomplete_engine = make<LexerAutoComplete>(m_filedb);
}
void ClientConnection::handle(const Messages::LanguageServer::FindDeclaration& message)
{
dbgln_if(CPP_LANGUAGE_SERVER_DEBUG, "FindDeclaration: {} {}:{}", message.file_name(), message.line(), message.column());
auto document = m_filedb.get(message.file_name());
if (!document) {
dbgln("file {} has not been opened", message.file_name());
return;
}
GUI::TextPosition identifier_position = { (size_t)message.line(), (size_t)message.column() };
auto location = m_autocomplete_engine->find_declaration_of(message.file_name(), identifier_position);
if (!location.has_value()) {
dbgln("could not find declaration");
return;
}
dbgln_if(CPP_LANGUAGE_SERVER_DEBUG, "declaration location: {} {}:{}", location.value().file, location.value().line, location.value().column);
post_message(Messages::LanguageClient::DeclarationLocation(location.value().file, location.value().line, location.value().column));
}
}