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#pragma once
#include <string>
#include <map>
#include <memory>
#include "CShader.h"
#include "string/string.h"
namespace shaders
{
class ShaderLibrary
{
typedef std::map<std::string, CShaderPtr, string::ILess> ShaderMap;
ShaderMap _shaders;
public:
/* greebo: Trys to lookup the named shader definition and returns
* its reference. Always returns a valid reference.
*/
std::shared_ptr<ShaderTemplate> getTemplate(const std::string& name);
/**
* Returns true if the given shader definition exists.
*/
bool definitionExists(const std::string& name) const;
// Copies the given definition, original name must be present, new name must not conflict
void copyDefinition(const std::string& nameOfOriginal, const std::string& nameOfCopy);
// Renames the definition oldName => newName. oldName must be present, newName must not be present
bool renameDefinition(const std::string& oldName, const std::string& newName);
// Removes the named definition. The name must be present in the library.
void removeDefinition(const std::string& name);
/* greebo: Clears out all internal containers (definitions, tables, shaders)
*/
void clear();
/* greebo: Retrieves the shader with the given name.
*
* @returns: the according CShaderPtr, this may also
* be a pointer to a dummy shader (shader not found)
*/
CShaderPtr findShader(const std::string& name);
void foreachShaderName(const ShaderNameCallback& callback);
// Traverse the library using the given functor
void foreachShader(const std::function<void(const CShaderPtr&)>& func);
};
typedef std::shared_ptr<ShaderLibrary> ShaderLibraryPtr;
} // namespace shaders
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