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/**
 *  Eval.cpp
 *
 *  This file holds the implementation for the Php::eval() function
 * 
 *  @author andot <https://github.com/andot>
 */

/**
 *  Dependencies
 */
#include "includes.h"

/**
 *  Open PHP namespace
 */
namespace Php {

/**
 *  Evaluate a PHP string
 *  @param  phpCode     The PHP code to evaluate
 *  @return Value       The result of the evaluation
 */
Value eval(const std::string &phpCode) 
{
    // we have a script for this
    return Script(phpCode).execute();
}

/**
 *  Include a file
 *  @param  filename
 *  @return Value
 */
Value include(const std::string &filename)
{
    // we can simply execute a file
    return File(filename).execute();
}

/**
 *  Include a file only once
 *  @param  filename
 *  @return Value
 */
Value include_once(const std::string &filename)
{
    // we can simply execute a file
    return File(filename).once();
}

/**
 *  Require a file
 *  This causes a fatal error if the file does not exist
 *  @param  filename
 *  @return Value
 */
Value require(const std::string &filename)
{
    // create the file
    File file(filename);
    
    // execute if it exists
    if (file.exists()) return file.execute();
    
    // trigger fatal error
    error << filename << " does not exist" << std::flush;
    
    // unreachable
    return nullptr;
}

/**
 *  Require a file only once
 *  This causes a fatal error if the file does not exist
 *  @param  filename
 *  @return Value
 */
Value require_once(const std::string &filename)
{
    // create the file
    File file(filename);
    
    // execute if it exists
    if (file.exists()) return file.once();
    
    // trigger fatal error
    error << filename << " does not exist" << std::flush;
    
    // unreachable
    return nullptr;
}


/**
 *  End of namespace
 */
}