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#pragma once
#include <stdexcept>
#include <functional>
#include "ExecutionFailure.h"
namespace cmd
{
/**
* Exception type thrown when an operation cannot be executed.
* Any function called by the CommandSystem can throw this type,
* it will be caught by the CommandSystem and possibly end up
* displayed in an error popup window.
*/
class ExecutionNotPossible :
public ExecutionFailure
{
public:
ExecutionNotPossible(const std::string& msg) :
ExecutionFailure(msg)
{}
// Converts a function that is throwing an ExecutionNotPossible
// to one that returns false instead (true if no exception is thrown)
static bool ToBool(const std::function<void()>& func)
{
try
{
func();
return true;
}
catch (ExecutionNotPossible&)
{
return false;
}
}
};
}
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