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#ifndef command_manager_hh_INCLUDED
#define command_manager_hh_INCLUDED
#include "completion.hh"
#include "memoryview.hh"
#include "shell_manager.hh"
#include "string.hh"
#include "utils.hh"
#include <unordered_map>
#include <functional>
#include <initializer_list>
namespace Kakoune
{
struct Context;
using CommandParameters = memoryview<String>;
using Command = std::function<void (CommandParameters, Context& context)>;
using CommandCompleter = std::function<CandidateList (const Context& context,
CompletionFlags,
CommandParameters,
size_t, ByteCount)>;
enum class CommandFlags
{
None = 0,
Hidden = 1,
};
constexpr CommandFlags operator|(CommandFlags lhs, CommandFlags rhs)
{
return (CommandFlags)((int)lhs | (int)rhs);
}
constexpr bool operator&(CommandFlags lhs, CommandFlags rhs)
{
return (bool)((int)lhs & (int)rhs);
}
class PerArgumentCommandCompleter
{
public:
using ArgumentCompleter = std::function<CandidateList (const Context&,
CompletionFlags flags,
const String&, ByteCount)>;
using ArgumentCompleterList = memoryview<ArgumentCompleter>;
PerArgumentCommandCompleter(ArgumentCompleterList completers)
: m_completers(completers.begin(), completers.end()) {}
CandidateList operator()(const Context& context,
CompletionFlags flags,
CommandParameters params,
size_t token_to_complete,
ByteCount pos_in_token) const;
private:
std::vector<ArgumentCompleter> m_completers;
};
class CommandManager : public Singleton<CommandManager>
{
public:
void execute(const String& command_line, Context& context,
memoryview<String> shell_params = {},
const EnvVarMap& env_vars = EnvVarMap{});
Completions complete(const Context& context, CompletionFlags flags,
const String& command_line, ByteCount cursor_pos);
bool command_defined(const String& command_name) const;
void register_command(String command_name, Command command,
CommandFlags flags = CommandFlags::None,
CommandCompleter completer = CommandCompleter());
void register_commands(memoryview<String> command_names, Command command,
CommandFlags flags = CommandFlags::None,
CommandCompleter completer = CommandCompleter());
private:
void execute_single_command(CommandParameters params,
Context& context) const;
struct CommandDescriptor
{
Command command;
CommandFlags flags;
CommandCompleter completer;
};
std::unordered_map<String, CommandDescriptor> m_commands;
};
}
#endif // command_manager_hh_INCLUDED
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