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CLK/Reflection/Struct.cpp
2020-03-19 23:24:06 -04:00

125 lines
3.1 KiB
C++

//
// Struct.cpp
// Clock Signal
//
// Created by Thomas Harte on 13/03/2020.
// Copyright © 2020 Thomas Harte. All rights reserved.
//
#include "Struct.hpp"
#include <algorithm>
// MARK: - Setters
template <> bool Reflection::set(Struct &target, const std::string &name, int value) {
const auto target_type = target.type_of(name);
if(!target_type) return false;
// No need to convert an int or a registered enum.
if(*target_type == typeid(int) || !Reflection::Enum::name(*target_type).empty()) {
target.set(name, &value);
return true;
}
// Promote to an int64_t.
if(*target_type == typeid(int64_t)) {
const auto int64 = int64_t(value);
target.set(name, &int64);
return true;
}
return false;
}
template <> bool Reflection::set(Struct &target, const std::string &name, const std::string &value) {
const auto target_type = target.type_of(name);
if(!target_type) return false;
if(Reflection::Enum::name(*target_type).empty()) {
return false;
}
const int enum_value = Reflection::Enum::from_string(*target_type, value);
if(enum_value < 0) {
return false;
}
target.set(name, &enum_value);
return true;
}
template <> bool Reflection::set(Struct &target, const std::string &name, const char *value) {
const std::string string(value);
return set<const std::string &>(target, name, string);
}
template <> bool Reflection::set(Struct &target, const std::string &name, bool value) {
const auto target_type = target.type_of(name);
if(!target_type) return false;
if(*target_type == typeid(bool)) {
target.set(name, &value);;
}
return false;
}
// MARK: - Fuzzy setter
bool Reflection::fuzzy_set(Struct &target, const std::string &name, const std::string &value) {
const auto target_type = target.type_of(name);
if(!target_type) return false;
// If the target is a registered enum, ttry to convert the value. Failing that,
// try to match without case sensitivity.
if(Reflection::Enum::size(*target_type)) {
const int from_string = Reflection::Enum::from_string(*target_type, value);
if(from_string >= 0) {
target.set(name, &from_string);
return true;
}
const auto all_values = Reflection::Enum::all_values(*target_type);
const auto value_location = std::find_if(all_values.begin(), all_values.end(),
[&value] (const auto &entry) {
if(value.size() != entry.size()) return false;
const char *v = value.c_str();
const char *e = entry.c_str();
while(*v) {
if(tolower(*v) != tolower(*e)) return false;
++v;
++e;
}
return true;
});
if(value_location != all_values.end()) {
const int offset = int(value_location - all_values.begin());
target.set(name, &offset);
return true;
}
return false;
}
return false;
}
// MARK: - Getters
template <typename Type> bool Reflection::get(Struct &target, const std::string &name, Type &value) {
return false;
}
template <> bool Reflection::get(Struct &target, const std::string &name, bool &value) {
const auto target_type = target.type_of(name);
if(!target_type) return false;
if(*target_type == typeid(bool)) {
value = *reinterpret_cast<const bool *>(target.get(name));
return true;
}
return false;
}