Latte\Macros\BlockMacros::macroExtends PHP Method

    public function macroExtends(MacroNode $node, PhpWriter $writer)
    {
        $notation = $node->getNotation();
        if ($node->modifiers) {
            throw new CompileException("Modifiers are not allowed in {$notation}");
        } elseif (!$node->args) {
            throw new CompileException("Missing destination in {$notation}");
        } elseif ($node->parentNode) {
            throw new CompileException("{$notation} must be placed outside any macro.");
        } elseif ($this->extends !== NULL) {
            throw new CompileException("Multiple {$notation} declarations are not allowed.");
        } elseif ($node->args === 'none') {
            $this->extends = 'FALSE';
        } else {
            $this->extends = $writer->write('%node.word%node.args');
        }
        if (!$this->getCompiler()->isInHead()) {
            trigger_error("{$notation} must be placed in template head.", E_USER_WARNING);
        }
    }

 /**
  * @param \Latte\MacroNode $node
  * @param \Latte\PhpWriter $writer
  */
 public function macroExtends(MacroNode $node, PhpWriter $writer)
 {
     $node->args = $this->pathResolver->expandPath($node->args, 'Resources/templates');
     $node->tokenizer = new MacroTokens($node->args);
     $writer = new PhpWriter($node->tokenizer);
     return $this->blockMacros->macroExtends($node, $writer);
 }