framework/randomshaders/rsgVariable.hpp

#ifndef _RSGVARIABLE_HPP
#define _RSGVARIABLE_HPP
/*-------------------------------------------------------------------------
 * drawElements Quality Program Random Shader Generator
 * ----------------------------------------------------
 *
 * Copyright 2014 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 *//*!
 * \file
 * \brief Variable class.
 *//*--------------------------------------------------------------------*/

#include "rsgDefs.hpp"
#include "rsgVariableType.hpp"
#include "rsgToken.hpp"

#include <string>

namespace rsg
{

class GeneratorState;

class Variable
{
public:
	enum Storage
	{
		STORAGE_LOCAL,
		STORAGE_SHADER_IN,
		STORAGE_SHADER_OUT,
		STORAGE_UNIFORM,
		STORAGE_CONST,
		STORAGE_PARAMETER_IN,
		STORAGE_PARAMETER_OUT,
		STORAGE_PARAMETER_INOUT,

		STORAGE_LAST
	};

								Variable			(const VariableType& type, Storage storage, const char* name);
								~Variable			(void);

	const VariableType&			getType				(void) const { return m_type;					}
	Storage						getStorage			(void) const { return m_storage;				}
	const char*					getName				(void) const { return m_name.c_str();			}
	int							getLayoutLocation	(void) const { return m_layoutLocation;			}
	bool						hasLayoutLocation	(void) const { return m_layoutLocation >= 0;	}

	void						setStorage			(Storage storage)	{ m_storage = storage;			}
	void						setLayoutLocation	(int location)		{ m_layoutLocation = location;	}

	bool						isWritable			(void) const;

	void						tokenizeDeclaration	(GeneratorState& state, TokenStream& str) const;

private:
	VariableType				m_type;
	Storage						m_storage;
	std::string					m_name;
	int							m_layoutLocation;
};

} // rsg

#endif // _RSGVARIABLE_HPP