mirror of
https://github.com/clementine-player/Clementine
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87 lines
2.0 KiB
C++
87 lines
2.0 KiB
C++
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/** ParamUtils.hpp:
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* A collection of utility functions to make using parameter types easier.
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* In reality, this stuff belongs elsewhere, but one step at a time
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*/
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#ifndef _PARAM_UTILS_HPP
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#define _PARAM_UTILS_HPP
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#include "Param.hpp"
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#include <map>
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#include <cassert>
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#include "BuiltinParams.hpp"
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class ParamUtils
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{
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public:
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static bool insert(Param * param, std::map<std::string,Param*> * paramTree)
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{
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assert(param);
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assert(paramTree);
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return ((paramTree->insert(std::make_pair(param->name,param))).second);
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}
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static const int AUTO_CREATE = 1;
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static const int NO_CREATE = 0;
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template <int FLAGS>
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static Param * find(std::string name, std::map<std::string,Param*> * paramTree)
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{
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assert(paramTree);
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Param * param;
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/* First look in the suggested database */
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std::map<std::string,Param*>::iterator pos = paramTree->find(name);
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if ((FLAGS == AUTO_CREATE) && ((pos == paramTree->end())))
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{
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/* Check if string is valid */
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if (!Param::is_valid_param_string(name.c_str()))
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return NULL;
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/* Now, create the user defined parameter given the passed name */
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if ((param = new Param(name)) == NULL)
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return NULL;
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/* Finally, insert the new parameter into this preset's parameter tree */
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std::pair<std::map<std::string,Param*>::iterator, bool> insertRetPair =
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paramTree->insert(std::make_pair(param->name, param));
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assert(insertRetPair.second);
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} else if (pos != paramTree->end())
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param = pos->second;
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else
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param = NULL;
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/* Return the found (or created) parameter. Note that this could be null */
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return param;
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}
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static Param * find(const std::string & name, BuiltinParams * builtinParams, std::map<std::string,Param*> * insertionTree)
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{
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Param * param;
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// Check first db
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if ((param = builtinParams->find_builtin_param(name)) != 0)
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return param;
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// Check second db, create if necessary
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return find<AUTO_CREATE>(name, insertionTree);
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}
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};
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#endif
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