framework/common/tcuFunctionLibrary.hpp

#ifndef _TCUFUNCTIONLIBRARY_HPP
#define _TCUFUNCTIONLIBRARY_HPP
/*-------------------------------------------------------------------------
 * drawElements Quality Program Tester Core
 * ----------------------------------------
 *
 * 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 Generic interface for library containing functions.
 *//*--------------------------------------------------------------------*/

#include "tcuDefs.hpp"
#include "deDynamicLibrary.hpp"

#include <string>
#include <vector>
#include <map>

namespace tcu
{

// \note Returned function pointers have same lifetime as the library.
class FunctionLibrary
{
protected:
								FunctionLibrary			(void);

public:
	virtual						~FunctionLibrary		(void);
	virtual deFunctionPtr		getFunction				(const char* funcName) const = 0;

private:
								FunctionLibrary			(const FunctionLibrary&);
	FunctionLibrary&			operator=				(const FunctionLibrary&);
};

class StaticFunctionLibrary : public FunctionLibrary
{
public:
	struct Entry
	{
		const char*		name;
		deFunctionPtr	ptr;
	};

								StaticFunctionLibrary	(const Entry* entries, int numEntries);
								~StaticFunctionLibrary	(void);

	deFunctionPtr				getFunction				(const char* funcName) const;

private:

								StaticFunctionLibrary	(const StaticFunctionLibrary&);
	StaticFunctionLibrary&		operator=				(const StaticFunctionLibrary&);

	// \todo [2014-03-11 pyry] This could be implemented with const char* pointers and custom compare.
	std::map<std::string, deFunctionPtr>				m_functions;
};

class DynamicFunctionLibrary : public FunctionLibrary
{
public:
								DynamicFunctionLibrary	(const char* fileName);
								~DynamicFunctionLibrary	(void);

	deFunctionPtr				getFunction				(const char* funcName) const;

private:
								DynamicFunctionLibrary	(const DynamicFunctionLibrary&);
	DynamicFunctionLibrary&		operator=				(const DynamicFunctionLibrary&);

	de::DynamicLibrary			m_dynamicLibrary;
};

class CompositeFunctionLibrary : public FunctionLibrary
{
public:
									CompositeFunctionLibrary	(const FunctionLibrary* libraries, int numLibraries);
									~CompositeFunctionLibrary	(void);

	deFunctionPtr					getFunction					(const char* funcName) const;

private:
	const FunctionLibrary* const	m_libraries;
	const int						m_numLibraries;
};

} // tcu

#endif // _TCUFUNCTIONLIBRARY_HPP