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serenity/Userland/DevTools/HackStudio/LanguageServers/Cpp/ParserAutoComplete.h
Itamar c54238f65c CppLanguageServer: Make autocomplete logic consider scopes
When returning autocomplete suggestions, we now consider the scope of
the name that is being completed.

For example, when requested to complete an expression like
'MyNamespace::', we will only suggest things that are in the
'MyNamespace' namespace.

This commit also has some general refactoring of the autocomplete
logic.
2021-05-15 23:28:50 +02:00

110 lines
4.6 KiB
C++

/*
* Copyright (c) 2021, Itamar S. <itamar8910@gmail.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/Function.h>
#include <AK/String.h>
#include <AK/Vector.h>
#include <DevTools/HackStudio/AutoCompleteResponse.h>
#include <DevTools/HackStudio/LanguageServers/AutoCompleteEngine.h>
#include <DevTools/HackStudio/LanguageServers/FileDB.h>
#include <LibCpp/AST.h>
#include <LibCpp/Parser.h>
#include <LibCpp/Preprocessor.h>
#include <LibGUI/TextPosition.h>
namespace LanguageServers::Cpp {
using namespace ::Cpp;
class ParserAutoComplete : public AutoCompleteEngine {
public:
ParserAutoComplete(const FileDB& filedb);
virtual Vector<GUI::AutocompleteProvider::Entry> get_suggestions(const String& file, const GUI::TextPosition& autocomplete_position) override;
virtual void on_edit(const String& file) override;
virtual void file_opened([[maybe_unused]] const String& file) override;
virtual Optional<GUI::AutocompleteProvider::ProjectLocation> find_declaration_of(const String& filename, const GUI::TextPosition& identifier_position) override;
private:
struct DocumentData {
const String& filename() const { return m_filename; }
const String& text() const { return m_text; }
const Preprocessor& preprocessor() const
{
VERIFY(m_preprocessor);
return *m_preprocessor;
}
Preprocessor& preprocessor()
{
VERIFY(m_preprocessor);
return *m_preprocessor;
}
const Parser& parser() const
{
VERIFY(m_parser);
return *m_parser;
}
Parser& parser()
{
VERIFY(m_parser);
return *m_parser;
}
String m_filename;
String m_text;
OwnPtr<Preprocessor> m_preprocessor;
OwnPtr<Parser> m_parser;
// FIXME: This HashTable must be re-computed if a declaration from a header file is modified
HashTable<NonnullRefPtr<Declaration>> m_declarations_from_headers;
};
Vector<GUI::AutocompleteProvider::Entry> autocomplete_property(const DocumentData&, const MemberExpression&, const String partial_text) const;
Vector<GUI::AutocompleteProvider::Entry> autocomplete_name(const DocumentData&, const ASTNode&, const String& partial_text) const;
String type_of(const DocumentData&, const Expression&) const;
String type_of_property(const DocumentData&, const Identifier&) const;
String type_of_variable(const Identifier&) const;
bool is_property(const ASTNode&) const;
bool is_empty_property(const DocumentData&, const ASTNode&, const Position& autocomplete_position) const;
RefPtr<Declaration> find_declaration_of(const DocumentData&, const ASTNode&) const;
enum class RecurseIntoScopes {
No,
Yes
};
NonnullRefPtrVector<Declaration> get_available_declarations(const DocumentData&, const ASTNode&, RecurseIntoScopes) const;
struct PropertyInfo {
StringView name;
RefPtr<Type> type;
};
Vector<PropertyInfo> properties_of_type(const DocumentData& document, const String& type) const;
NonnullRefPtrVector<Declaration> get_global_declarations_including_headers(const DocumentData&, RecurseIntoScopes) const;
NonnullRefPtrVector<Declaration> get_global_declarations(const DocumentData&, RecurseIntoScopes) const;
NonnullRefPtrVector<Declaration> get_declarations_recursive(const ASTNode&) const;
const DocumentData* get_document_data(const String& file) const;
const DocumentData* get_or_create_document_data(const String& file);
void set_document_data(const String& file, OwnPtr<DocumentData>&& data);
OwnPtr<DocumentData> create_document_data_for(const String& file);
String document_path_from_include_path(const StringView& include_path) const;
void update_declared_symbols(DocumentData&);
GUI::AutocompleteProvider::DeclarationType type_of_declaration(const Declaration&);
String scope_of_declaration(const Declaration&) const;
String scope_of_name_or_identifier(const ASTNode& node) const;
Optional<GUI::AutocompleteProvider::ProjectLocation> find_preprocessor_definition(const DocumentData&, const GUI::TextPosition&);
OwnPtr<DocumentData> create_document_data(String&& text, const String& filename);
Optional<Vector<GUI::AutocompleteProvider::Entry>> autocomplete_property(const DocumentData&, const ASTNode&, Optional<Token> containing_token) const;
Optional<Vector<GUI::AutocompleteProvider::Entry>> autocomplete_name(const DocumentData&, const ASTNode&, Optional<Token> containing_token) const;
HashMap<String, OwnPtr<DocumentData>> m_documents;
};
}