Add void return types

Author: wouterj

ExpressionLanguage.php

@@ -113,6 +113,8 @@ public function lint(Expression|string $expression, ?array $names): void
      * @throws \LogicException when registering a function after calling evaluate(), compile() or parse()
      *
      * @see ExpressionFunction
+     *
+     * @return void
      */
     public function register(string $name, callable $compiler, callable $evaluator)
     {
@@ -123,18 +125,27 @@ public function register(string $name, callable $compiler, callable $evaluator)
         $this->functions[$name] = ['compiler' => $compiler, 'evaluator' => $evaluator];
     }
 
+    /**
+     * @return void
+     */
     public function addFunction(ExpressionFunction $function)
     {
         $this->register($function->getName(), $function->getCompiler(), $function->getEvaluator());
     }
 
+    /**
+     * @return void
+     */
     public function registerProvider(ExpressionFunctionProviderInterface $provider)
     {
         foreach ($provider->getFunctions() as $function) {
             $this->addFunction($function);
         }
     }
 
+    /**
+     * @return void
+     */
     protected function registerFunctions()
     {
         $this->addFunction(ExpressionFunction::fromPhp('constant'));

Node/FunctionNode.php

@@ -28,7 +28,7 @@ public function __construct(string $name, Node $arguments)
         );
     }
 
-    public function compile(Compiler $compiler)
+    public function compile(Compiler $compiler): void
     {
         $arguments = [];
         foreach ($this->nodes['arguments']->nodes as $node) {

Node/Node.php

@@ -57,6 +57,9 @@ public function __toString(): string
         return implode("\n", $repr);
     }
 
+    /**
+     * @return void
+     */
     public function compile(Compiler $compiler)
     {
         foreach ($this->nodes as $node) {

Node/UnaryNode.php

@@ -35,7 +35,7 @@ public function __construct(string $operator, Node $node)
         );
     }
 
-    public function compile(Compiler $compiler)
+    public function compile(Compiler $compiler): void
     {
         $compiler
             ->raw('(')

Parser.php

@@ -208,6 +208,9 @@ protected function parseConditionalExpression(Node\Node $expr)
         return $expr;
     }
 
+    /**
+     * @return Node\Node
+     */
     public function parsePrimaryExpression()
     {
         $token = $this->stream->current;

TokenStream.php

@@ -41,6 +41,8 @@ public function __toString(): string
 
     /**
      * Sets the pointer to the next token and returns the old one.
+     *
+     * @return void
      */
     public function next()
     {
@@ -55,6 +57,8 @@ public function next()
 
     /**
      * @param string|null $message The syntax error message
+     *
+     * @return void
      */
     public function expect(string $type, string $value = null, string $message = null)
     {