RmlUi/Source/Core/DataVariable.cpp

/*
 * This source file is part of RmlUi, the HTML/CSS Interface Middleware
 *
 * For the latest information, see http://github.com/mikke89/RmlUi
 *
 * Copyright (c) 2008-2010 CodePoint Ltd, Shift Technology Ltd
 * Copyright (c) 2019 The RmlUi Team, and contributors
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 *
 */

#include "precompiled.h"
#include "../../Include/RmlUi/Core/DataVariable.h"

namespace Rml {
namespace Core {

bool VariableDefinition::Get(void* ptr, Variant& variant) {
    Log::Message(Log::LT_WARNING, "Values can only be retrieved from scalar data types.");
    return false;
}
bool VariableDefinition::Set(void* ptr, const Variant& variant) {
    Log::Message(Log::LT_WARNING, "Values can only be assigned to scalar data types.");
    return false;
}
int VariableDefinition::Size(void* ptr) {
    Log::Message(Log::LT_WARNING, "Tried to get the size from a non-array data type.");
    return 0;
}
Variable VariableDefinition::GetChild(void* ptr, const AddressEntry& address) {
    Log::Message(Log::LT_WARNING, "Tried to get the child of a scalar type.");
    return Variable();
}



DataTypeRegister::DataTypeRegister()
{
    // Add default transform functions.

	transform_register.Register("to_lower", [](Variant& variant, const VariantList& arguments) -> bool {
		String value;
		if (!variant.GetInto(value))
			return false;
		variant = StringUtilities::ToLower(value);
		return true;
	});

	transform_register.Register("to_upper", [](Variant& variant, const VariantList& arguments) -> bool {
		String value;
		if (!variant.GetInto(value))
			return false;
		variant = StringUtilities::ToUpper(value);
		return true;
	});
}

DataTypeRegister::~DataTypeRegister()
{}


class ArraySizeDefinition final : public VariableDefinition {
public:
    ArraySizeDefinition() : VariableDefinition(VariableType::Scalar) {}

    bool Get(void* ptr, Variant& variant) override
    {
        variant = static_cast<int>(reinterpret_cast<intptr_t>(ptr));
        return true;
    }
};

VariableDefinition* DataTypeRegister::GetArraySizeDefinition()
{
	static ArraySizeDefinition size_definition;
	return &size_definition;
}

}
}