diff options
Diffstat (limited to 'src/NXP/Classes/Calculator.php')
-rw-r--r-- | src/NXP/Classes/Calculator.php | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/src/NXP/Classes/Calculator.php b/src/NXP/Classes/Calculator.php index b584d69..bfa7015 100644 --- a/src/NXP/Classes/Calculator.php +++ b/src/NXP/Classes/Calculator.php @@ -13,6 +13,7 @@ namespace NXP\Classes; use NXP\Classes\Token\InterfaceOperator; use NXP\Classes\Token\TokenFunction; use NXP\Classes\Token\TokenNumber; +use NXP\Classes\Token\TokenString; use NXP\Classes\Token\TokenVariable; use NXP\Exception\IncorrectExpressionException; use NXP\Exception\UnknownVariableException; @@ -32,11 +33,14 @@ class Calculator */ public function calculate($tokens, $variables) { - $stack = array(); + $stack = []; foreach ($tokens as $token) { if ($token instanceof TokenNumber) { array_push($stack, $token); } + if ($token instanceof TokenString) { + array_push($stack, $token); + } if ($token instanceof TokenVariable) { $variable = $token->getValue(); if (!array_key_exists($variable, $variables)) { |