WhileCommand.h

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#pragma once
 
#include <ast/Command.h>
#include <environment/Environment.h>
#include <ast/Statement.h>
#include <common/CastHelper.h>
 
namespace cli {
 
class WhileCommand : public Command {
    std::unique_ptr < Expression > m_condition;
    std::unique_ptr < Command > m_body;
 
public:
    WhileCommand ( std::unique_ptr < Expression > condition, std::unique_ptr < Command > body ) : m_condition ( std::move ( condition ) ), m_body ( std::move ( body ) ) {
    }
 
    CommandResult run ( Environment & environment ) const override {
        CommandResult res = cli::CommandResult::OK;
        while ( res == cli::CommandResult::OK ) {
            std::shared_ptr < abstraction::Value > conditionResult = m_condition->translateAndEval ( environment );
 
            std::shared_ptr < abstraction::Value > castedResult = abstraction::CastHelper::eval ( environment, conditionResult, "bool" );
 
            if ( ! std::static_pointer_cast < abstraction::ValueHolderInterface < bool > > ( castedResult )->getValue ( ) )
                break;
 
            res = m_body->run ( environment );
 
            if ( res == CommandResult::CONTINUE )
                res = CommandResult::OK;
 
            if ( res == CommandResult::BREAK ) {
                res = CommandResult::OK;
                break;
            }
        }
 
        return res;
    }
};
 
} /* namespace cli */