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/*
Ousía
Copyright (C) 2014, 2015 Benjamin Paaßen, Andreas Stöckel
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "Exceptions.hpp"
#include "Rtti.hpp"
namespace ousia {
/* Class RttiStore */
std::unordered_map<std::type_index, const RttiType *> &RttiStore::table()
{
static std::unordered_map<std::type_index, const RttiType *> table;
return table;
}
void RttiStore::store(const std::type_info &native, const RttiType *rtti)
{
table().emplace(std::type_index{native}, rtti);
}
const RttiType &RttiStore::lookup(const std::type_info &native)
{
const auto &tbl = table();
auto it = tbl.find(std::type_index{native});
if (it == tbl.end()) {
return RttiTypes::None;
} else {
return *(it->second);
}
}
/* Class RttiBuilder */
RttiBuilder &RttiBuilder::genericMethod(const std::string name,
std::shared_ptr<Function> function)
{
if (!methods.emplace(name, function).second) {
throw OusiaException(std::string("Method with name \"") + name +
std::string("\" for type \"") + currentName +
std::string("\" already registered!"));
}
return *this;
}
RttiBuilder &RttiBuilder::genericProperty(
const std::string name, std::shared_ptr<PropertyDescriptor> property)
{
if (!properties.emplace(name, property).second) {
throw OusiaException(std::string("Property with name \"") + name +
std::string("\" for type \"") + currentName +
std::string("\" already registered!"));
}
return *this;
}
/* Class RttiType */
void RttiType::initialize() const
{
// Only run this function exactly once -- directly set the initialized flag
// to prevent unwanted recursion
if (!initialized) {
initialized = true;
// Register the parent properties and methods
{
for (const RttiType *parent: parents) {
parent->initialize();
methods.insert(parent->methods.begin(), parent->methods.end());
properties.insert(parent->properties.begin(), parent->properties.end());
}
}
// Insert the parent types of the parent types and the composite types
// of the parents
{
std::unordered_set<const RttiType *> origParents = parents;
for (const RttiType *parent : origParents) {
parent->initialize();
parents.insert(parent->parents.begin(), parent->parents.end());
}
for (const RttiType *parent : parents) {
parent->initialize();
compositeTypes.insert(parent->compositeTypes.begin(),
parent->compositeTypes.end());
}
parents.insert(this);
}
// Insert the composite types of the composite types and the parents
// of each composite type
{
std::unordered_set<const RttiType *> origCompositeTypes =
compositeTypes;
for (const RttiType *compositeType : origCompositeTypes) {
compositeType->initialize();
compositeTypes.insert(compositeType->compositeTypes.begin(),
compositeType->compositeTypes.end());
compositeTypes.insert(compositeType->parents.begin(),
compositeType->parents.end());
}
}
}
}
bool RttiType::isa(const RttiType &other) const
{
initialize();
return parents.count(&other) > 0;
}
bool RttiType::composedOf(const RttiType &other) const
{
initialize();
return compositeTypes.count(&other) > 0;
}
const RttiMethodMap &RttiType::getMethods() const {
initialize();
return methods;
}
const RttiPropertyMap &RttiType::getProperties() const {
initialize();
return properties;
}
std::shared_ptr<Function> RttiType::getMethod(const std::string &name) const
{
initialize();
auto it = methods.find(name);
if (it == methods.end()) {
return nullptr;
}
return it->second;
}
std::shared_ptr<PropertyDescriptor> RttiType::getProperty(const std::string &name) const
{
initialize();
auto it = properties.find(name);
if (it == properties.end()) {
return nullptr;
}
return it->second;
}
bool RttiType::hasMethod(const std::string &name) const
{
return methods.count(name) > 0;
}
bool RttiType::hasProperty(const std::string &name) const
{
return properties.count(name) > 0;
}
/* Constant initialization */
namespace RttiTypes {
const RttiType None{"unknown"};
const RttiType Nullptr{"nullptr"};
const RttiType Bool{"bool"};
const RttiType Int{"int"};
const RttiType Double{"double"};
const RttiType String{"string"};
const RttiType Array{"array"};
const RttiType Map{"map"};
const RttiType Function{"function"};
}
}
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