Matthias Andreas Benkard | 12a5735 | 2021-12-28 18:02:04 +0100 | [diff] [blame^] | 1 | <?php |
| 2 | |
| 3 | /* |
| 4 | * This file is part of Twig. |
| 5 | * |
| 6 | * (c) Fabien Potencier |
| 7 | * |
| 8 | * For the full copyright and license information, please view the LICENSE |
| 9 | * file that was distributed with this source code. |
| 10 | */ |
| 11 | |
| 12 | namespace Twig\Node; |
| 13 | |
| 14 | use Twig\Compiler; |
| 15 | use Twig\Error\SyntaxError; |
| 16 | |
| 17 | /** |
| 18 | * Represents a macro node. |
| 19 | * |
| 20 | * @author Fabien Potencier <fabien@symfony.com> |
| 21 | */ |
| 22 | class MacroNode extends Node |
| 23 | { |
| 24 | public const VARARGS_NAME = 'varargs'; |
| 25 | |
| 26 | public function __construct(string $name, Node $body, Node $arguments, int $lineno, string $tag = null) |
| 27 | { |
| 28 | foreach ($arguments as $argumentName => $argument) { |
| 29 | if (self::VARARGS_NAME === $argumentName) { |
| 30 | throw new SyntaxError(sprintf('The argument "%s" in macro "%s" cannot be defined because the variable "%s" is reserved for arbitrary arguments.', self::VARARGS_NAME, $name, self::VARARGS_NAME), $argument->getTemplateLine(), $argument->getSourceContext()); |
| 31 | } |
| 32 | } |
| 33 | |
| 34 | parent::__construct(['body' => $body, 'arguments' => $arguments], ['name' => $name], $lineno, $tag); |
| 35 | } |
| 36 | |
| 37 | public function compile(Compiler $compiler): void |
| 38 | { |
| 39 | $compiler |
| 40 | ->addDebugInfo($this) |
| 41 | ->write(sprintf('public function macro_%s(', $this->getAttribute('name'))) |
| 42 | ; |
| 43 | |
| 44 | $count = \count($this->getNode('arguments')); |
| 45 | $pos = 0; |
| 46 | foreach ($this->getNode('arguments') as $name => $default) { |
| 47 | $compiler |
| 48 | ->raw('$__'.$name.'__ = ') |
| 49 | ->subcompile($default) |
| 50 | ; |
| 51 | |
| 52 | if (++$pos < $count) { |
| 53 | $compiler->raw(', '); |
| 54 | } |
| 55 | } |
| 56 | |
| 57 | if ($count) { |
| 58 | $compiler->raw(', '); |
| 59 | } |
| 60 | |
| 61 | $compiler |
| 62 | ->raw('...$__varargs__') |
| 63 | ->raw(")\n") |
| 64 | ->write("{\n") |
| 65 | ->indent() |
| 66 | ->write("\$macros = \$this->macros;\n") |
| 67 | ->write("\$context = \$this->env->mergeGlobals([\n") |
| 68 | ->indent() |
| 69 | ; |
| 70 | |
| 71 | foreach ($this->getNode('arguments') as $name => $default) { |
| 72 | $compiler |
| 73 | ->write('') |
| 74 | ->string($name) |
| 75 | ->raw(' => $__'.$name.'__') |
| 76 | ->raw(",\n") |
| 77 | ; |
| 78 | } |
| 79 | |
| 80 | $compiler |
| 81 | ->write('') |
| 82 | ->string(self::VARARGS_NAME) |
| 83 | ->raw(' => ') |
| 84 | ; |
| 85 | |
| 86 | $compiler |
| 87 | ->raw("\$__varargs__,\n") |
| 88 | ->outdent() |
| 89 | ->write("]);\n\n") |
| 90 | ->write("\$blocks = [];\n\n") |
| 91 | ; |
| 92 | if ($compiler->getEnvironment()->isDebug()) { |
| 93 | $compiler->write("ob_start();\n"); |
| 94 | } else { |
| 95 | $compiler->write("ob_start(function () { return ''; });\n"); |
| 96 | } |
| 97 | $compiler |
| 98 | ->write("try {\n") |
| 99 | ->indent() |
| 100 | ->subcompile($this->getNode('body')) |
| 101 | ->raw("\n") |
| 102 | ->write("return ('' === \$tmp = ob_get_contents()) ? '' : new Markup(\$tmp, \$this->env->getCharset());\n") |
| 103 | ->outdent() |
| 104 | ->write("} finally {\n") |
| 105 | ->indent() |
| 106 | ->write("ob_end_clean();\n") |
| 107 | ->outdent() |
| 108 | ->write("}\n") |
| 109 | ->outdent() |
| 110 | ->write("}\n\n") |
| 111 | ; |
| 112 | } |
| 113 | } |