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LanguageServers/Cpp: Allow the creation of DocumentData objects to fail

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This fixes langauge-server crashes when trying to parse non-existant
header files, such as #include <new>.
Closes #5569.
This commit is contained in:
Itamar 2021-03-04 13:13:48 +02:00 • committed by Andreas Kling
parent a2ac86f5e1
commit 3f0ace6670
2 changed files with 19 additions and 8 deletions
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23
Userland/DevTools/HackStudio/LanguageServers/Cpp/ParserAutoComplete.cpp
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@ -41,7 +41,7 @@ ParserAutoComplete::ParserAutoComplete(ClientConnection& connection, const FileD
{
}
const ParserAutoComplete::DocumentData& ParserAutoComplete::get_or_create_document_data(const String& file)
const ParserAutoComplete::DocumentData* ParserAutoComplete::get_or_create_document_data(const String& file)
{
auto absolute_path = filedb().to_absolute_path(file);
if (!m_documents.contains(absolute_path)) {
@ -50,12 +50,12 @@ const ParserAutoComplete::DocumentData& ParserAutoComplete::get_or_create_docume
return get_document_data(absolute_path);
}
const ParserAutoComplete::DocumentData& ParserAutoComplete::get_document_data(const String& file) const
const ParserAutoComplete::DocumentData* ParserAutoComplete::get_document_data(const String& file) const
{
auto absolute_path = filedb().to_absolute_path(file);
auto document_data = m_documents.get(absolute_path);
VERIFY(document_data.has_value());
return *document_data.value();
return document_data.value();
}
OwnPtr<ParserAutoComplete::DocumentData> ParserAutoComplete::create_document_data_for(const String& file)
@ -97,7 +97,11 @@ Vector<GUI::AutocompleteProvider::Entry> ParserAutoComplete::get_suggestions(con
dbgln_if(CPP_LANGUAGE_SERVER_DEBUG, "ParserAutoComplete position {}:{}", position.line, position.column);
const auto& document = get_or_create_document_data(file);
const auto* document_ptr = get_or_create_document_data(file);
if (!document_ptr)
return {};
const auto& document = *document_ptr;
auto node = document.parser.node_at(position);
if (!node) {
dbgln_if(CPP_LANGUAGE_SERVER_DEBUG, "no node at position {}:{}", position.line, position.column);
@ -273,8 +277,11 @@ NonnullRefPtrVector<Declaration> ParserAutoComplete::get_declarations_in_outer_s
{
NonnullRefPtrVector<Declaration> declarations;
for (auto& include : document.preprocessor.included_paths()) {
document_path_from_include_path(include);
auto included_document = get_document_data(document_path_from_include_path(include));
declarations.append(get_declarations_in_outer_scope_including_headers(included_document));
if (!included_document)
continue;
declarations.append(get_declarations_in_outer_scope_including_headers(*included_document));
}
for (auto& decl : document.parser.root_node()->declarations()) {
declarations.append(decl);
@ -324,7 +331,11 @@ void ParserAutoComplete::file_opened([[maybe_unused]] const String& file)
Optional<GUI::AutocompleteProvider::ProjectLocation> ParserAutoComplete::find_declaration_of(const String& file_name, const GUI::TextPosition& identifier_position)
{
const auto& document = get_or_create_document_data(file_name);
const auto* document_ptr = get_or_create_document_data(file_name);
if (!document_ptr)
return {};
const auto& document = *document_ptr;
auto node = document.parser.node_at(Cpp::Position { identifier_position.line(), identifier_position.column() });
if (!node) {
dbgln_if(CPP_LANGUAGE_SERVER_DEBUG, "no node at position {}:{}", identifier_position.line(), identifier_position.column());