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 | * (c) Armin Ronacher |
| 8 | * |
| 9 | * For the full copyright and license information, please view the LICENSE |
| 10 | * file that was distributed with this source code. |
| 11 | */ |
| 12 | |
| 13 | namespace Twig\Node\Expression; |
| 14 | |
| 15 | use Twig\Compiler; |
| 16 | |
| 17 | class NameExpression extends AbstractExpression |
| 18 | { |
| 19 | private $specialVars = [ |
| 20 | '_self' => '$this->getTemplateName()', |
| 21 | '_context' => '$context', |
| 22 | '_charset' => '$this->env->getCharset()', |
| 23 | ]; |
| 24 | |
| 25 | public function __construct(string $name, int $lineno) |
| 26 | { |
| 27 | parent::__construct([], ['name' => $name, 'is_defined_test' => false, 'ignore_strict_check' => false, 'always_defined' => false], $lineno); |
| 28 | } |
| 29 | |
| 30 | public function compile(Compiler $compiler): void |
| 31 | { |
| 32 | $name = $this->getAttribute('name'); |
| 33 | |
| 34 | $compiler->addDebugInfo($this); |
| 35 | |
| 36 | if ($this->getAttribute('is_defined_test')) { |
| 37 | if ($this->isSpecial()) { |
| 38 | $compiler->repr(true); |
| 39 | } elseif (\PHP_VERSION_ID >= 70400) { |
| 40 | $compiler |
| 41 | ->raw('array_key_exists(') |
| 42 | ->string($name) |
| 43 | ->raw(', $context)') |
| 44 | ; |
| 45 | } else { |
| 46 | $compiler |
| 47 | ->raw('(isset($context[') |
| 48 | ->string($name) |
| 49 | ->raw(']) || array_key_exists(') |
| 50 | ->string($name) |
| 51 | ->raw(', $context))') |
| 52 | ; |
| 53 | } |
| 54 | } elseif ($this->isSpecial()) { |
| 55 | $compiler->raw($this->specialVars[$name]); |
| 56 | } elseif ($this->getAttribute('always_defined')) { |
| 57 | $compiler |
| 58 | ->raw('$context[') |
| 59 | ->string($name) |
| 60 | ->raw(']') |
| 61 | ; |
| 62 | } else { |
| 63 | if ($this->getAttribute('ignore_strict_check') || !$compiler->getEnvironment()->isStrictVariables()) { |
| 64 | $compiler |
| 65 | ->raw('($context[') |
| 66 | ->string($name) |
| 67 | ->raw('] ?? null)') |
| 68 | ; |
| 69 | } else { |
| 70 | $compiler |
| 71 | ->raw('(isset($context[') |
| 72 | ->string($name) |
| 73 | ->raw(']) || array_key_exists(') |
| 74 | ->string($name) |
| 75 | ->raw(', $context) ? $context[') |
| 76 | ->string($name) |
| 77 | ->raw('] : (function () { throw new RuntimeError(\'Variable ') |
| 78 | ->string($name) |
| 79 | ->raw(' does not exist.\', ') |
| 80 | ->repr($this->lineno) |
| 81 | ->raw(', $this->source); })()') |
| 82 | ->raw(')') |
| 83 | ; |
| 84 | } |
| 85 | } |
| 86 | } |
| 87 | |
| 88 | public function isSpecial() |
| 89 | { |
| 90 | return isset($this->specialVars[$this->getAttribute('name')]); |
| 91 | } |
| 92 | |
| 93 | public function isSimple() |
| 94 | { |
| 95 | return !$this->isSpecial() && !$this->getAttribute('is_defined_test'); |
| 96 | } |
| 97 | } |