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NE_Value.hpp
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220 lines (174 loc) · 5.27 KB
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#ifndef NE_VALUE_HPP
#define NE_VALUE_HPP
#include "NE_Serializable.hpp"
#include "NE_StringConverter.hpp"
#include <vector>
#include <memory>
#include <string>
#include <functional>
namespace NE
{
class Value;
using ValuePtr = std::shared_ptr<Value>;
using ValueConstPtr = std::shared_ptr<const Value>;
class SingleValue;
using SingleValuePtr = std::shared_ptr<SingleValue>;
using SingleValueConstPtr = std::shared_ptr<const SingleValue>;
class ListValue;
using ListValuePtr = std::shared_ptr<ListValue>;
using ListValueConstPtr = std::shared_ptr<const ListValue>;
class IListValue;
using IListValuePtr = std::shared_ptr<IListValue>;
using IListValueConstPtr = std::shared_ptr<const IListValue>;
class Value : public DynamicSerializable
{
SERIALIZABLE;
public:
Value ();
Value (const Value& src) = delete;
virtual ~Value ();
virtual ValuePtr Clone () const = 0;
virtual std::wstring ToString (const StringConverter& stringConverter) const = 0;
virtual Stream::Status Read (InputStream& inputStream) override;
virtual Stream::Status Write (OutputStream& outputStream) const override;
template <class Type>
static bool IsType (Value* val);
template <class Type>
static bool IsType (const ValuePtr& val);
template <class Type>
static bool IsType (const ValueConstPtr& val);
template <class Type>
static Type* Cast (Value* val);
template <class Type>
static const Type* Cast (const Value* val);
template <class Type>
static std::shared_ptr<Type> Cast (const ValuePtr& val);
template <class Type>
static std::shared_ptr<const Type> Cast (const ValueConstPtr& val);
};
template <class Type>
bool Value::IsType (Value* val)
{
return dynamic_cast<Type*> (val) != nullptr;
}
template <class Type>
bool Value::IsType (const ValuePtr& val)
{
return dynamic_cast<Type*> (val.get ()) != nullptr;
}
template <class Type>
bool Value::IsType (const ValueConstPtr& val)
{
return dynamic_cast<const Type*> (val.get ()) != nullptr;
}
template <class Type>
Type* Value::Cast (Value* val)
{
return dynamic_cast<Type*> (val);
}
template <class Type>
const Type* Value::Cast (const Value* val)
{
return dynamic_cast<const Type*> (val);
}
template <class Type>
std::shared_ptr<Type> Value::Cast (const ValuePtr& val)
{
return std::dynamic_pointer_cast<Type> (val);
}
template <class Type>
std::shared_ptr<const Type> Value::Cast (const ValueConstPtr& val)
{
return std::dynamic_pointer_cast<const Type> (val);
}
class SingleValue : public Value
{
SERIALIZABLE;
public:
SingleValue ();
virtual ~SingleValue ();
virtual Stream::Status Read (InputStream& inputStream) override;
virtual Stream::Status Write (OutputStream& outputStream) const override;
};
class IListValue
{
public:
IListValue ();
virtual ~IListValue ();
virtual size_t GetSize () const = 0;
virtual const ValueConstPtr& GetValue (size_t index) const = 0;
virtual bool Enumerate (const std::function<bool (const ValueConstPtr&)>& processor) const = 0;
};
class ListValue : public Value,
public IListValue
{
DYNAMIC_SERIALIZABLE (ListValue);
public:
ListValue ();
ListValue (const std::vector<ValueConstPtr>& values);
virtual ~ListValue ();
virtual ValuePtr Clone () const override;
virtual std::wstring ToString (const StringConverter& stringConverter) const override;
virtual Stream::Status Read (InputStream& inputStream) override;
virtual Stream::Status Write (OutputStream& outputStream) const override;
virtual size_t GetSize () const override;
virtual const ValueConstPtr& GetValue (size_t index) const override;
virtual bool Enumerate (const std::function<bool (const ValueConstPtr&)>& processor) const override;
void Push (const ValueConstPtr& value);
private:
std::vector<ValueConstPtr> values;
};
class ValueToListValueAdapter : public IListValue
{
public:
ValueToListValueAdapter (const ValueConstPtr& val);
virtual size_t GetSize () const override;
virtual const ValueConstPtr& GetValue (size_t index) const override;
virtual bool Enumerate (const std::function<bool (const ValueConstPtr&)>& processor) const override;
private:
const ValueConstPtr& val;
};
template <class Type>
bool IsSingleType (const ValueConstPtr& val)
{
if (Value::IsType<Type> (val)) {
return true;
}
if (Value::IsType<ListValue> (val)) {
const ListValue* listVal = Value::Cast<ListValue> (val.get ());
if (listVal->GetSize () == 1 && Value::IsType<Type> (listVal->GetValue (0))) {
return true;
}
}
return false;
}
template <class Type>
bool IsComplexType (const ValueConstPtr& val)
{
if (Value::IsType<Type> (val)) {
return true;
}
if (Value::IsType<ListValue> (val)) {
ListValueConstPtr listVal = Value::Cast<ListValue> (val);
if (listVal->GetSize () == 0) {
return false;
}
bool isType = true;
listVal->Enumerate ([&] (const ValueConstPtr& innerVal) {
if (!IsComplexType<Type> (innerVal)) {
isType = false;
}
return isType;
});
return isType;
}
return false;
}
bool IsSingleValue (const ValueConstPtr& value);
bool IsListValue (const ValueConstPtr& value);
ValueConstPtr CreateSingleValue (const ValueConstPtr& value);
IListValueConstPtr CreateListValue (const ValueConstPtr& value);
bool FlatEnumerate (const ValueConstPtr& value, const std::function<bool (const ValueConstPtr&)>& processor);
ValueConstPtr FlattenValue (const ValueConstPtr& value);
}
#endif