home/src/command_manager.hh
2017-09-01 17:09:34 +07:00

132 lines
3.9 KiB
C++

#ifndef command_manager_hh_INCLUDED
#define command_manager_hh_INCLUDED
#include "coord.hh"
#include "completion.hh"
#include "array_view.hh"
#include "shell_manager.hh"
#include "parameters_parser.hh"
#include "string.hh"
#include "optional.hh"
#include "utils.hh"
#include "hash_map.hh"
#include <functional>
#include <initializer_list>
namespace Kakoune
{
class Context;
using CommandParameters = ConstArrayView<String>;
using Command = std::function<void (const ParametersParser& parser,
Context& context,
const ShellContext& shell_context)>;
using CommandCompleter = std::function<Completions (const Context& context,
CompletionFlags,
CommandParameters,
size_t, ByteCount)>;
using CommandHelper = std::function<String (const Context& context, CommandParameters)>;
enum class CommandFlags
{
None = 0,
Hidden = 1,
};
constexpr bool with_bit_ops(Meta::Type<CommandFlags>) { return true; }
struct CommandInfo { String name, info; };
struct Token
{
enum class Type
{
Raw,
RawQuoted,
RawEval,
ShellExpand,
RegisterExpand,
OptionExpand,
ValExpand,
ArgExpand,
CommandSeparator
};
Type type;
ByteCount begin;
ByteCount end;
DisplayCoord coord;
String content;
};
using TokenList = Vector<Token>;
template<bool throw_on_unterminated>
TokenList parse(StringView line);
class CommandManager : public Singleton<CommandManager>
{
public:
void execute(StringView command_line, Context& context,
const ShellContext& shell_context = ShellContext{});
Completions complete(const Context& context, CompletionFlags flags,
StringView command_line, ByteCount cursor_pos);
Completions complete(const Context& context, CompletionFlags flags,
CommandParameters params,
size_t token_to_complete, ByteCount pos_in_token);
Optional<CommandInfo> command_info(const Context& context,
StringView command_line) const;
bool command_defined(StringView command_name) const;
void register_command(String command_name, Command command,
String docstring,
ParameterDesc param_desc,
CommandFlags flags = CommandFlags::None,
CommandHelper helper = CommandHelper(),
CommandCompleter completer = CommandCompleter());
Completions complete_command_name(const Context& context, StringView query) const;
void clear_last_complete_command() { m_last_complete_command = String{}; }
private:
void execute_single_command(CommandParameters params,
Context& context,
const ShellContext& shell_context,
DisplayCoord pos);
struct CommandDescriptor
{
Command command;
String docstring;
ParameterDesc param_desc;
CommandFlags flags;
CommandHelper helper;
CommandCompleter completer;
};
using CommandMap = HashMap<String, CommandDescriptor, MemoryDomain::Commands>;
CommandMap m_commands;
String m_last_complete_command;
int m_command_depth = 0;
CommandMap::const_iterator find_command(const Context& context,
StringView name) const;
};
String expand(StringView str, const Context& context,
const ShellContext& shell_context = ShellContext{});
String expand(StringView str, const Context& context,
const ShellContext& shell_context,
const std::function<String (String)>& postprocess);
}
#endif // command_manager_hh_INCLUDED