Acore::Impl::ChatCommands::ArgInfo< T, std::enable_if_t< std::is_enum_v< T > > > Struct Template Reference

#include "ChatCommandArgs.h"

Public Types
using	SearchMap = std::map< std::string_view, Optional< T >, StringCompareLessI_T >

Static Public Member Functions
static SearchMap	MakeSearchMap ()
static T const *	Match (std::string_view s)
static ChatCommandResult	TryConsume (T &val, ChatHandler const *handler, std::string_view args)

Static Public Attributes
static SearchMap const	_map = MakeSearchMap()

Detailed Description

template<typename T>
struct Acore::Impl::ChatCommands::ArgInfo< T, std::enable_if_t< std::is_enum_v< T > > >

Member Typedef Documentation

SearchMap

template<typename T >

using Acore::Impl::ChatCommands::ArgInfo< T, std::enable_if_t< std::is_enum_v< T > > >::SearchMap = std::map<std::string_view, Optional<T>, StringCompareLessI_T>

Member Function Documentation

MakeSearchMap()

template<typename T >

static SearchMap Acore::Impl::ChatCommands::ArgInfo< T, std::enable_if_t< std::is_enum_v< T > > >::MakeSearchMap ( )

inlinestatic

        {
            SearchMap map;
            for (T val : EnumUtils::Iterate<T>())
            {
                EnumText text = EnumUtils::ToString(val);
 
                std::string_view title(text.Title);
                std::string_view constant(text.Constant);
 
                auto [constantIt, constantNew] = map.try_emplace(title, val);
                if (!constantNew)
                    constantIt->second = std::nullopt;
 
                if (title != constant)
                {
                    auto [titleIt, titleNew] = map.try_emplace(title, val);
                    if (!titleNew)
                        titleIt->second = std::nullopt;
                }
            }
            return map;
        }

References EnumText::Constant, EnumText::Title, and EnumUtils::ToString().

Match()

template<typename T >

static T const * Acore::Impl::ChatCommands::ArgInfo< T, std::enable_if_t< std::is_enum_v< T > > >::Match ( std::string_view  s )

inlinestatic

        {
            auto it = _map.lower_bound(s);
            if (it == _map.end() || !StringStartsWithI(it->first, s)) // not a match
                return nullptr;
 
            if (!StringEqualI(it->first, s)) // we don't have an exact match - check if it is unique
            {
                auto it2 = it;
                ++it2;
                if ((it2 != _map.end()) && StringStartsWithI(it2->first, s)) // not unique
                    return nullptr;
            }
 
            if (it->second)
                return &*it->second;
            else
                return nullptr;
        }

References StringEqualI(), and StringStartsWithI().

TryConsume()

template<typename T >

static ChatCommandResult Acore::Impl::ChatCommands::ArgInfo< T, std::enable_if_t< std::is_enum_v< T > > >::TryConsume ( T &  val, ChatHandler const *  handler, std::string_view  args  )

inlinestatic

        {
            std::string_view strVal;
            ChatCommandResult next1 = ArgInfo<std::string_view>::TryConsume(strVal, handler, args);
            if (next1)
            {
                if (T const* match = Match(strVal))
                {
                    val = *match;
                    return next1;
                }
            }
 
            // Value not found. Try to parse arg as underlying type and cast it to enum type
            using U = std::underlying_type_t<T>;
            U uVal = 0;
            if (ChatCommandResult next2 = ArgInfo<U>::TryConsume(uVal, handler, args))
            {
                if (EnumUtils::IsValid<T>(uVal))
                {
                    val = static_cast<T>(uVal);
                    return next2;
                }
            }
 
            if (next1)
                return FormatAcoreString(handler, LANG_CMDPARSER_STRING_VALUE_INVALID, STRING_VIEW_FMT_ARG(strVal), GetTypeName<T>().c_str());
            else
                return next1;
        }

References Acore::Impl::ChatCommands::FormatAcoreString(), LANG_CMDPARSER_STRING_VALUE_INVALID, and STRING_VIEW_FMT_ARG.

Member Data Documentation

_map

template<typename T >

SearchMap const Acore::Impl::ChatCommands::ArgInfo< T, std::enable_if_t< std::is_enum_v< T > > >::_map = MakeSearchMap()

inlinestatic