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File: src/eMacros/Runtime/Logical/LogicalAnd.php

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  Classes of Emmanuel Antico  >  eMacros  >  src/eMacros/Runtime/Logical/LogicalAnd.php  >  Download  
File: src/eMacros/Runtime/Logical/LogicalAnd.php
Role: Class source
Content type: text/plain
Description: Class source
Class: eMacros
PHP LISP language interpreter
Author: By
Last change:
Date: 2014-01-13 05:23
Size: 689 bytes
 

Contents

Class file image Download
<?php
namespace eMacros\Runtime\Logical;

use eMacros\Applicable;
use eMacros\Scope;
use eMacros\GenericList;

class LogicalAnd implements Applicable {
    /**
     * Applies a logical AND to all operands
     * Usage: (and true true) (and true true false)
     * Returns: boolean
     * (non-PHPdoc)
     * @see \eMacros\Applicable::apply()
     */
    public function apply(Scope $scope, GenericList $operands) {
        if (count($operands) == 0) {
            throw new \BadFunctionCallException("And: No parameters found.");
        }
        
        foreach ($operands as $expr) {
            if (!$value = $expr->evaluate($scope)) {
                return $value;
            }
        }

        return $value;
    }
}