Add missing PHPdoc return types

Author: wouterj

Compiler.php

@@ -63,6 +63,9 @@ public function compile(Node\Node $node): static
         return $this;
     }
 
+    /**
+     * @return string
+     */
     public function subcompile(Node\Node $node)
     {
         $current = $this->source;

Node/FunctionNode.php

@@ -50,6 +50,9 @@ public function evaluate(array $functions, array $values)
         return $functions[$this->attributes['name']]['evaluator'](...$arguments);
     }
 
+    /**
+     * @return array
+     */
     public function toArray()
     {
         $array = [];

Node/Node.php

@@ -64,6 +64,9 @@ public function compile(Compiler $compiler)
         }
     }
 
+    /**
+     * @return mixed
+     */
     public function evaluate(array $functions, array $values)
     {
         $results = [];
@@ -79,6 +82,9 @@ public function toArray()
         throw new \BadMethodCallException(sprintf('Dumping a "%s" instance is not supported yet.', static::class));
     }
 
+    /**
+     * @return string
+     */
     public function dump()
     {
         $dump = '';
@@ -90,11 +96,17 @@ public function dump()
         return $dump;
     }
 
+    /**
+     * @return string
+     */
     protected function dumpString(string $value)
     {
         return sprintf('"%s"', addcslashes($value, "\0\t\"\\"));
     }
 
+    /**
+     * @return bool
+     */
     protected function isHash(array $value)
     {
         $expectedKey = 0;

ParsedExpression.php

@@ -29,6 +29,9 @@ public function __construct(string $expression, Node $nodes)
         $this->nodes = $nodes;
     }
 
+    /**
+     * @return Node
+     */
     public function getNodes()
     {
         return $this->nodes;

Parser.php

@@ -174,6 +174,9 @@ protected function getPrimary()
         return $this->parsePrimaryExpression();
     }
 
+    /**
+     * @return Node\Node
+     */
     protected function parseConditionalExpression(Node\Node $expr)
     {
         while ($this->stream->current->test(Token::PUNCTUATION_TYPE, '??')) {
@@ -270,6 +273,9 @@ public function parsePrimaryExpression()
         return $this->parsePostfixExpression($node);
     }
 
+    /**
+     * @return Node\ArrayNode
+     */
     public function parseArrayExpression()
     {
         $this->stream->expect(Token::PUNCTUATION_TYPE, '[', 'An array element was expected');
@@ -294,6 +300,9 @@ public function parseArrayExpression()
         return $node;
     }
 
+    /**
+     * @return Node\ArrayNode
+     */
     public function parseHashExpression()
     {
         $this->stream->expect(Token::PUNCTUATION_TYPE, '{', 'A hash element was expected');
@@ -338,6 +347,9 @@ public function parseHashExpression()
         return $node;
     }
 
+    /**
+     * @return Node\GetAttrNode|Node\Node
+     */
     public function parsePostfixExpression(Node\Node $node)
     {
         $token = $this->stream->current;
@@ -398,6 +410,8 @@ public function parsePostfixExpression(Node\Node $node)
 
     /**
      * Parses arguments.
+     *
+     * @return Node\Node
      */
     public function parseArguments()
     {