Move Operators to ExpressionParsers, deprecate ExpressionParser

src/ExpressionParser/Infix/DotExpressionParser.php

@@ -0,0 +1,93 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Twig\ExpressionParser\Infix;
+
+use Twig\Error\SyntaxError;
+use Twig\ExpressionParser\AbstractExpressionParser;
+use Twig\ExpressionParser\InfixAssociativity;
+use Twig\ExpressionParser\InfixExpressionParserInterface;
+use Twig\Lexer;
+use Twig\Node\Expression\AbstractExpression;
+use Twig\Node\Expression\ArrayExpression;
+use Twig\Node\Expression\ConstantExpression;
+use Twig\Node\Expression\GetAttrExpression;
+use Twig\Node\Expression\MacroReferenceExpression;
+use Twig\Node\Expression\NameExpression;
+use Twig\Node\Expression\Variable\TemplateVariable;
+use Twig\Parser;
+use Twig\Template;
+use Twig\Token;
+
+/**
+ * @internal
+ */
+final class DotExpressionParser extends AbstractExpressionParser implements InfixExpressionParserInterface
+{
+    use ArgumentsTrait;
+
+    public function parse(Parser $parser, AbstractExpression $expr, Token $token): AbstractExpression
+    {
+        $stream = $parser->getStream();
+        $token = $stream->getCurrent();
+        $lineno = $token->getLine();
+        $arguments = new ArrayExpression([], $lineno);
+        $type = Template::ANY_CALL;
+
+        if ($stream->nextIf(Token::OPERATOR_TYPE, '(')) {
+            $attribute = $parser->parseExpression();
+            $stream->expect(Token::PUNCTUATION_TYPE, ')');
+        } else {
+            $token = $stream->next();
+            if (
+                $token->test(Token::NAME_TYPE)
+                || $token->test(Token::NUMBER_TYPE)
+                || ($token->test(Token::OPERATOR_TYPE) && preg_match(Lexer::REGEX_NAME, $token->getValue()))
+            ) {
+                $attribute = new ConstantExpression($token->getValue(), $token->getLine());
+            } else {
+                throw new SyntaxError(\sprintf('Expected name or number, got value "%s" of type %s.', $token->getValue(), $token->toEnglish()), $token->getLine(), $stream->getSourceContext());
+            }
+        }
+
+        if ($stream->test(Token::OPERATOR_TYPE, '(')) {
+            $type = Template::METHOD_CALL;
+            $arguments = $this->parseCallableArguments($parser, $token->getLine());
+        }
+
+        if (
+            $expr instanceof NameExpression
+            && (
+                null !== $parser->getImportedSymbol('template', $expr->getAttribute('name'))
+                || '_self' === $expr->getAttribute('name') && $attribute instanceof ConstantExpression
+            )
+        ) {
+            return new MacroReferenceExpression(new TemplateVariable($expr->getAttribute('name'), $expr->getTemplateLine()), 'macro_'.$attribute->getAttribute('value'), $arguments, $expr->getTemplateLine());
+        }
+
+        return new GetAttrExpression($expr, $attribute, $arguments, $type, $lineno);
+    }
+
+    public function getName(): string
+    {
+        return '.';
+    }
+
+    public function getPrecedence(): int
+    {
+        return 300;
+    }
+
+    public function getAssociativity(): InfixAssociativity
+    {
+        return InfixAssociativity::Left;
+    }
+}