Adding varExists method and support for undefined var handler in getVar (#96)V2.1.112.0.4

* Added varExists method

* getVar now respects VarNotFoundHandler setting

* Use local version of PHP-CS-Fixer

Instead of hard coded version from github actions

* Fixing actions

* Fixing actions

* Dropping testing for 7.3, as it is no longer supported

4 files changed, 12 insertions, 15 deletions

diff --git a/src/NXP/Classes/CustomFunction.php b/src/NXP/Classes/CustomFunction.php
index 6e4fdc5..225495f 100644
--- a/src/NXP/Classes/CustomFunction.php
+++ b/src/NXP/Classes/CustomFunction.php
@@ -1,6 +1,5 @@
 <?php
 
-
 namespace NXP\Classes;
 
 use NXP\Exception\IncorrectNumberOfFunctionParametersException;
@@ -49,7 +48,7 @@ class CustomFunction
      *
      * @throws IncorrectNumberOfFunctionParametersException
      */
-    public function execute(array &$stack) : Token
+    public function execute(array &$stack): Token
     {
         if (count($stack) < $this->places) {
             throw new IncorrectNumberOfFunctionParametersException($this->name);
diff --git a/src/NXP/Classes/Operator.php b/src/NXP/Classes/Operator.php
index d9a70d7..1b1acc4 100644
--- a/src/NXP/Classes/Operator.php
+++ b/src/NXP/Classes/Operator.php
@@ -1,6 +1,5 @@
 <?php
 
-
 namespace NXP\Classes;
 
 use NXP\Exception\IncorrectExpressionException;
@@ -55,7 +54,7 @@ class Operator
      *
      * @throws IncorrectExpressionException
      */
-    public function execute(array &$stack) : Token
+    public function execute(array &$stack): Token
     {
         if (count($stack) < $this->places) {
             throw new IncorrectExpressionException();
diff --git a/src/NXP/Classes/Token.php b/src/NXP/Classes/Token.php
index e12315e..924771e 100644
--- a/src/NXP/Classes/Token.php
+++ b/src/NXP/Classes/Token.php
@@ -1,6 +1,5 @@
 <?php
 
-
 namespace NXP\Classes;
 
 class Token
diff --git a/src/NXP/Classes/Tokenizer.php b/src/NXP/Classes/Tokenizer.php
index 77014b8..087a78d 100644
--- a/src/NXP/Classes/Tokenizer.php
+++ b/src/NXP/Classes/Tokenizer.php
@@ -66,7 +66,7 @@ class Tokenizer
         $this->operators = $operators;
     }
 
-    public function tokenize() : self
+    public function tokenize(): self
     {
         foreach (str_split($this->input, 1) as $ch) {
             switch (true) {
@@ -184,17 +184,17 @@ class Tokenizer
         return $this;
     }
 
-    private function isNumber(string $ch) : bool
+    private function isNumber(string $ch): bool
     {
         return $ch >= '0' && $ch <= '9';
     }
 
-    private function isAlpha(string $ch) : bool
+    private function isAlpha(string $ch): bool
     {
         return $ch >= 'a' && $ch <= 'z' || $ch >= 'A' && $ch <= 'Z' || $ch == '_';
     }
 
-    private function emptyNumberBufferAsLiteral() : void
+    private function emptyNumberBufferAsLiteral(): void
     {
         if (strlen($this->numberBuffer)) {
             $this->tokens[] = new Token(Token::Literal, $this->numberBuffer);
@@ -202,22 +202,22 @@ class Tokenizer
         }
     }
 
-    private function isDot(string $ch) : bool
+    private function isDot(string $ch): bool
     {
         return $ch == '.';
     }
 
-    private function isLP(string $ch) : bool
+    private function isLP(string $ch): bool
     {
         return $ch == '(';
     }
 
-    private function isRP(string $ch) : bool
+    private function isRP(string $ch): bool
     {
         return $ch == ')';
     }
 
-    private function emptyStrBufferAsVariable() : void
+    private function emptyStrBufferAsVariable(): void
     {
         if ($this->stringBuffer != '') {
             $this->tokens[] = new Token(Token::Variable, $this->stringBuffer);
@@ -225,7 +225,7 @@ class Tokenizer
         }
     }
 
-    private function isComma(string $ch) : bool
+    private function isComma(string $ch): bool
     {
         return $ch == ',';
     }
@@ -235,7 +235,7 @@ class Tokenizer
      * @throws IncorrectBracketsException
      * @throws UnknownOperatorException
      */
-    public function buildReversePolishNotation() : array
+    public function buildReversePolishNotation(): array
     {
         $tokens = [];
         /** @var SplStack<Token> $stack */