Fix ignored parenthesis in expressions

CHANGELOG

@@ -1,5 +1,6 @@
 # 3.15.0 (2024-XX-XX)
 
+ * Fix `power` expressions with a negative number in parenthesis (`(-1) ** 2`)
  * Deprecate instantiating `Node` directly. Use `EmptyNode` or `Nodes` instead.
  * Add support for inline comments
  * Add support for accessing class constants with the dot operator

src/ExpressionParser.php

@@ -172,7 +172,12 @@ class ExpressionParser
             $expr = $this->parseExpression();
             $this->parser->getStream()->expect(Token::PUNCTUATION_TYPE, ')', 'An opened parenthesis is not properly closed');
 
-            return $this->parsePostfixExpression($expr);
+            $expr = $this->parsePostfixExpression($expr);
+            if ($expr instanceof NegUnary) {
+                $expr->wrapInParentheses();
+            }
+
+            return $expr;
         }
 
         return $this->parsePrimaryExpression();

src/Node/Expression/Unary/AbstractUnary.php

@@ -20,14 +20,26 @@ abstract class AbstractUnary extends AbstractExpression
 {
     public function __construct(Node $node, int $lineno)
     {
-        parent::__construct(['node' => $node], [], $lineno);
+        parent::__construct(['node' => $node], ['with_parentheses' => false], $lineno);
+    }
+
+    public function wrapInParentheses(): void
+    {
+        $this->setAttribute('with_parentheses', true);
     }
 
     public function compile(Compiler $compiler): void
     {
-        $compiler->raw(' ');
+        if ($this->getAttribute('with_parentheses')) {
+            $compiler->raw('(');
+        } else {
+            $compiler->raw(' ');
+        }
         $this->operator($compiler);
         $compiler->subcompile($this->getNode('node'));
+        if ($this->getAttribute('with_parentheses')) {
+            $compiler->raw(')');
+        }
     }
 
     abstract public function operator(Compiler $compiler): Compiler;

tests/Fixtures/expressions/power.test

@@ -8,6 +8,10 @@ Twig parses power expressions
 {{ a ** b }}
 {{ b ** a }}
 {{ b ** b }}
+{{ -1**0 }}
+{{ (-1)**0 }}
+{{ -a**0 }}
+{{ (-a)**0 }}
 --DATA--
 return ['a' => 4, 'b' => -2]
 --EXPECT--
@@ -18,3 +22,7 @@ return ['a' => 4, 'b' => -2]
 0.0625
 16
 0.25
+-1
+1
+-1
+1