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#ifndef command_manager_hh_INCLUDED
#define command_manager_hh_INCLUDED
#include <unordered_map>
#include <functional>
#include <initializer_list>
#include "string.hh"
#include "utils.hh"
#include "completion.hh"
#include "memoryview.hh"
#include "shell_manager.hh"
namespace Kakoune
{
struct Context;
struct wrong_argument_count : runtime_error
{
wrong_argument_count() : runtime_error("wrong argument count") {}
};
typedef memoryview<String> CommandParameters;
typedef std::function<void (const CommandParameters&,
const Context& context)> Command;
typedef std::function<CandidateList (const CommandParameters&,
size_t, size_t)> CommandCompleter;
class PerArgumentCommandCompleter
{
public:
typedef std::function<CandidateList (const String&, size_t)> ArgumentCompleter;
typedef memoryview<ArgumentCompleter> ArgumentCompleterList;
PerArgumentCommandCompleter(const ArgumentCompleterList& completers)
: m_completers(completers.begin(), completers.end()) {}
CandidateList operator()(const CommandParameters& params,
size_t token_to_complete,
size_t pos_in_token) const;
private:
std::vector<ArgumentCompleter> m_completers;
};
class CommandManager : public Singleton<CommandManager>
{
public:
enum Flags
{
None = 0,
IgnoreSemiColons = 1,
DeferredShellEval = 2,
};
void execute(const String& command_line, const Context& context,
const EnvVarMap& env_vars = EnvVarMap());
void execute(const CommandParameters& params, const Context& context,
const EnvVarMap& env_vars = EnvVarMap());
Completions complete(const String& command_line, size_t cursor_pos);
bool command_defined(const String& command_name) const;
void register_command(const String& command_name,
Command command,
unsigned flags = None,
const CommandCompleter& completer = CommandCompleter());
void register_commands(const memoryview<String>& command_names,
Command command,
unsigned flags = None,
const CommandCompleter& completer = CommandCompleter());
private:
struct CommandDescriptor
{
Command command;
unsigned flags;
CommandCompleter completer;
};
std::unordered_map<String, CommandDescriptor> m_commands;
};
}
#endif // command_manager_hh_INCLUDED
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